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hp LaserJet quick reference service guide, color, volume III

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1. gt ot Ul o o CES g O o o O Figure 1 3 Control panel layout CLJ 4500 4550 1 Control panel display 6 Attention light 2 Ready light 7 MENU button 3 Data light 8 ITEM button 4 Go button 9 VALUE button 5 CANCEL JOB button 10 SELECT button Rocker buttons 4 Chapter 1 Control panel ENWW CLJ 4600 5500 conirol panel layout Figure 1 4 Control panel layout CLJ 4600 5500 1 PAUSE RESUME button 6 Help button 2 CANCEL JOB button 7 Back arrow button 3 Ready light 8 Down arrow button 4 Data light 9 SELECT button 5 Attention light 10 Up arrow button 11 Control panel display ENWW Using the control panel 5 CLJ 8500 8550 conirol panel layout Figure 1 5 Control panel layout CLJ 8500 8550 1 Go button 6 SELECT button 2 MENU button 7 Attention amber light 3 Control panel display 8 Data green light 4 V ALUE button 9 Ready green light 5 CANCEL JOB button 10 TEM button 6 Chapter 1 Control panel ENWW CLJ 9500 conirol panel layout LIL lal Ll PPO wh Figure 1 6 Control panel layout CLJ 9500 1 PAUSE RESUME button 8 DOWN button 2 Graphical display 9 HELP button 3 Back button 10Suppli
2. Figure 3 4 Jam locations CLJ 4600 5500 Table 3 4 Jam locations and error messages CLJ 4500 1 Top cover area 4 Paper input path 2 Duplex Path 3 Paper path 5 Trays 302 Chapter 3 Jams ENWW Table 3 5 Jam locations and error messages CLJ 4600 5500 Message Solution Media is delayed in the feed area of the specified tray 1 Open the covers and the ETB 2 Pull media by both corners to remove it Media is stuck in the feed area of the specified tray 1 Open the covers and the ETB 2 Pull media by both corners to remove it Media is delayed in the paper input path or has not reached the fuser paper sensor in the expected time 1 Open the covers and the ETB 2 Pull media by both corners to remove it Media has crumpled into an accordion fold as it enters the fuser 1 Open the top cover WARNING The fuser is hot wait 10 minutes for it to cool down 2 Firmly lift the two green handles on either side of the fuser to disengage the fuser rollers 3 Open the fuser cover and remove the media 4 Firmly press down on the two green handles on either side of the fuser to re engage the fuser rollers During a duplex print job media was delayed in the output bin before it entered the duplex path 1 Open the top cover WARNING The fuser is hot wait 10 minutes for it to cool down 2 Firmly lift th
3. 54 mm 2 1 inches cassette feed roller registration roller 57 mm 2 2 inches registration sub roller 63 mm 2 5 inches Fuser pressure roller 75 mm 2 9 inches Photosensitive drum or transfer roller center to center distance 94 mm 8 7 inches photosensitive drum 107 mm 4 2 inches Fuser sleeve Repetitive defects troubleshooting 341 Table 4 5 Repetitive defects continued Product 14 mm 0 5 inch Probable cause Toner charging roller Developing cylinder 38 mm 1 5 inches Fuser delivery roller 36 mm 1 4 inches 41 mm 1 6 inches Print cartridge Output bin delivery roller 43 mm 1 7 inches Toner feed roller 44 mm 1 7 inches Transfer media attaching roller 53 mm 2 0 inches Registration roller Sub registration roller 79 mm 3 0 inches Fuser pressure roller 82 mm 3 2 inches Transfer roller 94 mm 3 7 inches 63 mm 2 5 inches Photosensitive drum Cassette feed roller Cassette separation roller 107 mm 4 2 inches Fuser sleeve CLJ 8500 8550 38 mm 1 5 inches Color developer roller 44 mm 1 7 inches Charging roller Black developer roller 56 mm 2 2 inches Cleaning roller 52 mm 1 9 inches 65 mm 2 6 inches Developer DSD wheels 66 mm 2 7 inches Transfer roller 10
4. 9 Ifthe error persists replace the power supply ENWW Troubleshooting by using control panel messages 171 Table 2 14 Numerical error messages continued Message Description Action The printer detected that the 1 Turn the printer off and on CLJ 4500 4550 fan an exhaust fan located to reset the printer in the upper right rear Visually check to see if corner of the printer is not the fan is rotating if you rotating This fan operates cannot see any rotation off 24 Vdc and is controlled place your hand over the by the DC controller PCB outlet vents to feel microprocessor whether exhaust air is moving 2 Remove the left side cover Check to see if anything is preventing the fan from rotating freely 3 Verify that the fan s connector is firmly seated into connector J208 of the developing PCB 4 Ifthe error persists replace the fan 172 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action Fan 2 FM 2 has failed or is CAUTION CLJ 8500 8550 obstructed Turn the printer off and do not operate the printer in this condition to prevent serious damage 1 Turn the printer off and on to reset it 2 Reconnect connectors J703 and J706 on the carousel motor PCA and reconnect connector J220 on the controller board 3 Reconnect connector J701 on the carousel motor PCA connect
5. A Device location 1 DIMM slot 1 2 DIMM slot 2 3 DIMM slot 3 4 DIMM slot 4 ZZ Error number 00 DIMM unsupported 01 DIMM SPD failure unrecognized memory 03 DIMM error 1 Press STOP 2 Check the ZZ error number for the specific DIMM and then reseat the DIMM try the DIMM in another slot except for the firmware DIMM in slot 1 make sure that DIMMs are installed make sure that the DIMMs are supported try the DIMM in another printer 140 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 CLJ 4600 CLJ 5500 CLJ 8500 8550 A memory error has occurred If a DIMM caused the error the DIMM will not be recognized configured X Memory Type 0 ROM CLJ 4500 4550 1 RAM 2 font DIMM CLJ 8550 only Y Device Location 0 onboard CLJ 4500 4550 1 DIMM slot 1 2 DIMM slot 2 3 DIMM slot 3 4 DIMM slot 4 CLJ 4600 CLJ 5500 CLJ 8500 8550 CLJ 9500 5 DIMM slot 5 CLJ 8500 8550 6 DIMM slot 6 CLJ 8500 8550 7 DIMM slot 7 CLJ 8500 8550 8 DIMM slot 8 CLJ 8500 8550 ZZ Error Number 00 unsupported memory 01 unrecognized memory 02 unsupported memory size CLJ 4600 CLJ 5500 CLJ 8500 8550 CLJ 9500 03 failed RAM test 04 exceeded maximum RAM size CLJ 4600 CLJ 5500 CLJ 8500 8550 CLJ 9500 1 Verify th
6. 2 CLJ 4600 CLJ 5500 Note The printer cannot always determine whether the error exists in the cartridge or in the printer reader writer The printer cannot read or write to at least one print cartridge memory tag or at least one memory tag is missing XX Description 00 memory error on supply item 10 memory tag missing YY Description 00 black print cartridge 01 cyan print cartridge 02 magenta print cartridge 03 yellow print cartridge 1 Turn the printer off and then on 2 Exchange the cartridge for the color indicated with a cartridge in another slot to determine whether the error follows the cartridge or stays with the slot If the error follows the cartridge replace that cartridge Otherwise continue with step 3 3 Reseat the connectors between the memory PCB J602 J605 and the antenna PCBs J901A D the memory PCB and the DC controller PCB J1028 4 Ifthe message persists replace the antenna PCB 5 If the message persists replace the memory PCB 6 If the message persists replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Troubleshooting by using control panel messages 111 Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 Note Replacing the image drum might correct the problem temporarily because the drum contains toner for about 50 pages If the
7. 3 Check the image drum high voltage pins on the print engine 4 Check the following connectors Yellow J3040 and J804 on the T driver PCA Magenta J3038 and J804 on the T driver PCA Cyan J3044 and J805 on the T driver PCA Black J3042 and J805 on the T driver PCA ENWW Troubleshooting by using control panel messages 163 Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 continued 5 Replace the indicated image drum see the service manual for details Make sure that the printer is turned off and then turned on again after the image drum is replaced Replace the T driver PCA see the service manual for details Replace the DC controller PCA see the service manual for details 54 27 and 54 00 procedure 1 Remove the ITB and check the belt for correct alignment and movement Replace the ITB and seat it correctly Check connector J3075 and J618 on the P driver PCA Replace the ITB see the service manual for details Replace the P driver PCA see the service manual for details Replace the DC controller PCA see the service manual for details 164 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action bE PE 54 28 procedure CLJ 9500 1 Make sure that the continued density color sensor
8. If the job is multifeed check for supported media and check the pick separation and feed rollers in the source tray If the media is fed from tray 1 check the separation pad Check the registration rollers for correct functionality O N FF Q Remove the media from tray 1 Open the ITB access door and remove the jammed media Check for supported media and correct size specification on the control panel Remove any residual media near T1 and the fuser Check the three sensors for correct movement and functionality Make sure that the fuser ITB and T2 roller are seated correctly 310 Chapter 3 Jams ENWW Table 3 8 CLJ 9500 jam messages Message Solution 1 3 Check for supported media 4 Check the discharge comb area for damage or Remove the ITB and check for residual media Make sure that the ITB is seated correctly and the green lever is moved to the correct position Check the fuser upstream sensor for missing flag or poor movement contamination Check for residual media inside and near the fuser Remove the fuser and check the exit sensor for correct movement and functionality Check the fuser rollers for damage or contamination Check the post fuser paper path for jams Reseat the fuser Remove the duplexer Remove the fuser Check the post secondary transfer area and the fuser inlet area 2 Check for residual media inside and
9. appears on the display c Press SELECT to reformat the printer hard disk alternates with CLJ 4600 5500 The disk file system has reached its capacity 1 Use the HP Web Jetadmin software to delete files from the EIO disk drive and try again 2 To remove this message from the display turn the printer off and then on ENWW Troubleshooting by using control panel messages 73 Table 2 13 Alphabetical printer messages continued Message Description Action alternates with CLJ 4600 5500 or with CLJ 9500 The file system device is protected and no new files can be written to it 1 To enable writing to the disk turn off the write protection by using HP Web Jetadmin 2 To remove this message from the display turn the printer off and then on CLJ 8500 8550 A user has attempted to save to the printer hard disk while the printer hard disk is write protected See the system administrator for access to the printer hard disk A printer door has been opened during a test The test has been aborted Close the door and restart the test CLJ 4500 4550 An error has been detected with a component of the printer drum kit Replace the drum kit CLJ 8500 8550 The printer has detected an error in the imaging drum memory device Printing can continue but will be stopped as soon as the waste toner
10. Action CLJ 9500 is not installed correctly The cleaner is not installed or 1 Make sure that the transfer cleaner is installed correctly and that the cleaning kit is within life specifications Remove and reseat the cleaner and the waste toner collection bottle Open the front doors and lightly tap on the waste toner bottle Close the front doors and check to see if the error goes away Make sure that the front doors are completely closed If the error persists check the sensor flag mechanism in the toner collection bottle to make sure that it moves correctly Replace the cleaning kit 7 Check connectors J1403 J1402 and J1401 on the waste sensor assembly intermediate connector J3081 and connector J821 on the T driver PCA Replace the waste toner sensor assembly ENWW Troubleshooting by using control panel messages 81 Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 8500 8550 CAUTION Press the blue button to rotate the carousel to prevent damage to the printer The print cartridge is not installed not correctly installed in the printer or not being detected by the cartridge sensor lt Color gt Cyan magenta yellow or black 1 Insert the cartridge or make sure that the installed cartridge is correctly seated in the printer Note The color toner carousel will not r
11. CLJ 4500 4550 continued 5 Ifthe shaft rotates both forward and reverse and the 50 7 fuser error appears the cause of the error is related to the motion feedback circuitry 6 Remove the fusing assembly and verify that the sensor flag is in good condition and functional 7 Verify that the connector at sensor PS6 is firmly seated 8 Clean the sensor 9 Ifthe error persists replace sensor PS6 CLJ 4500 Or CLJ 4550 A beam detect error or laser failure has occurred 1 Turn the printer off and on to reset the printer 2 Verify that connectors J1102 on the laser driver PCB and J1008 on the DC controller are seated correctly 3 Verify that connectors J551 on the beam detect PCB and J1006 on the DC controller are seated correctly 4 Ifthe error persists replace the laser scanner unit 132 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action A beam detect error or laser 1 Turn the printer off and on failure has occurred to reset the printer CLJ 8500 8550 2 Reconnect connector J1001 on the laser driver PCA and connector J205 on the controller board 3 Reconnect connector J2 on the beam detect PCA relay connector J40 and connector J211 on the controller board 4 Ifthe error persists replace the laser scanner unit 5 If the error persists replace the
12. Message Description Action Soe PRINTER j The printer detects a motor Note alternates with that fails to turn or fails to If turning the printer off and turn at speed on again does not resolve i a the 59 00 or 59 A0 error CLJ 9500 X description l remove and reinstall the 0 motor error not possible image transfer cleaner for the HP color LaserJet 9500 Print cartridge motor 1 motor startup error errors remove and shake 2 motor rotation error There are no 59 errors 3 fuser motor startup error associated with the print 4 fuser motor rotation cartridge motor errors When error the engine reports a fail to 5 image drum motor rotate for these motors the startup error error 6 image drum motor ppears rotation error 8 developer motor failure 9 ITB motor startup error A ITB motor rotation error D registration motor 1 Remove and check the indicated print cartridge Check the engine for damaged drive linkages starting error 2 Gently shake the print E registration motor cartridge reseat it and rotation error turn the printer on 3 Turn the printer off and then turn the printer on again to clear the error D or E noted i i 1 the log 4 Use the hardware diagnostic tools from the control panel to test each motor for correct where XXis functionality a decimal conversion of the hexadecimal control panel display error Check connector J1 on the low volta
13. an Oo ETB assembly Fuser assembly 368 Chapter 5 Illustrations ENWW 3 Figure 5 23 CLJ 5500 location of switches Reference CLJ 5500 component 1 test print switch SW101 2 paper length detection switch SW1 SW2 SW3 3 paper width detection switch SW4 SW5 SW6 4 power switch 5 door open detection switch SW1 ENWW Major components 369 Figure 5 24 CLJ 5500 location of sensors Reference CLJ 5500 component 1 output bin full sensor PS6 fuser delivery sensor PS7 fuser paper sensor PS8 cartridge home position sensors PS1 PS2 PS3 PS4 developing disengaging sensor PS5 paper stack surface sensor PS902 cassette paper sensor PS901 horizontal registration transparency sensor IS1 O OINI ODO oO amp OJN top of page sensor PS801 oO multi purpose tray paper sensor PS802 k pickup sensor PS9 ak ine ETB speed sensor PS10 wo paper feed sensor PS903 370 Chapter 5 Illustrations ENWW Oy Figure 5 25 CLJ 5500 location of solenoid and clutch Reference CLJ 5500 component 1 multi purpose tray pickup solenoid SL1 2 cassette pickup clutch CL1 ENWW Major components 371 Figure 5 26 CLJ 5500 location of motors and fans FM2 Reference CLJ 5500
14. Product CLJ 8500 CLJ 8550 Instructions Print a configuration page to record the previous printer settings Turn the printer off Hold down Go while turning the printer on Release GO after COLD RESET appears on the printer control panel display F in English appears on the display for one second to verify that the key sequence has been recognized followed by the power on self test message Once the power on self test is finished the message displays in English CLJ 9500 ENWW Turn off the printer and then turn the printer on again 2 Press and hold during the memory count 3 Continue to hold until all three control panel lights illuminate steadily and then release When appears on the control panel press v appears 6 Press while i appears on the control panel The cold reset is complete Hard disk initialization 265 Registration page Product Instructions CLJ 2500 Not applicable CLJ 3500 Not applicable CLJ 3700 CLJ 4500 Note CLJ 4550 You must setthe registration values if both the formatter and DC controller are replaced at the same time or if the formatter was previously installed in another printer If the DC controller is replaced by itself these values are copied from the formatter to the DC controller If a new formatter is replaced or if an NVRAM initialization is performed see page 258 these values are loaded onto the formatter from the DC contr
15. Table 2 14 Numerical error messages continued Message Description Action Developer motor errors alternates with 7 1 Turn the printer off and then turn the printer on again to clear the error CLJ 9500 continued 2 Remove and check the indicated image drum and check the engine for damaged drive linkages 3 Reseat the image drum and turn the printer on 4 Use the hardware diagnostic tools from the control panel to test each motor for correct functionality 5 Replace the image drum and the drive linkages if necessary 6 Check connector J1 on the low voltage power supply J210 and J202 on the high voltage power supply J608 and J612 on the P driver PCA and J806 on the T driver PCA 7 Check FFC connectors J104 and J105 on the DC controller PCA and connectors J601 and J616 on the P driver PCA especially if the printer has been serviced recently 8 Make sure that the FFC is centered and that it is completely inserted into the connector Replace the FFC if it is damaged 200 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 9500 continued 9 Check the color appropriate connectors K J609 on the P driver PCA and J3096 on the motor C J606 on the P driver PCA and J3094 on the motor M J604 on the P driver PCA and J3092 on
16. The printer will initialize NVRAM and then continue its power on sequence 260 Chapter 2 Service and troubleshooting ENWW Hard disk initialization Table 2 54 Hard disk initialization Product Instructions CLJ 2500 series Not applicable CLJ 3500 3700 Not applicable CLJ 4500 Not applicable CLJ 4550 CLJ 4600 Turn the printer on CLJ 5500 As the printer performs its power on sequence press and hold the PAUSE RESUME button until all three lights on the control panel are lit Press ENTER The display should show I Press SELECT The printer will initialize the hard disk and continue its power on sequence From the host computer delete data from the printer hard disk using the printer drivers or a disk management program To clear all data from the printer hard disk reformat the printer hard disk from the printer control panel To reformat the printer hard disk a Press MENU until display b Press ITEM until f display c Press SELECT to reformat the printer hard disk ENWW Hard disk initialization 261 Table 2 54 Hard disk initialization Product Instructions CLJ 9500 Turn the printer off Turn the printer on Press and hold PAUSE RESUME on the control panel during the memory count Hold PAUSE RESUME down until all three error lights illuminate steadily Press until 1 appears on the display panel 6 Press v 7 The printer begins initializing the disk this might ta
17. and check the ITB for damage 5 Check the right door actuated cleaning mechanism for correct functionality 6 Selec and on the control panel to check correct formations of the calibration swatches on the ITB set to 7 000 milliseconds for a CPR pattern check If the swatches are light or missing a color check the T1 components image drum and print cartridge for the missing or light color Also check for malformed or too light swatches stray toner from cleaning failures and ITB damage 7 Check the ITB for smooth belt rotation and belt travel Replace the ITB if movement problems or damage exists 8 Check connector J3073 and J3074 at the CPR sensors intermediate connector J3080 and connector J808 on the T driver PCA 162 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 continued 9 Replace the DC controller PCA see the service manual for details 10 Replace the density color registration sensor assembly see the service manual for details 11 Replace the T driver PCA see the service manual for details 54 21 54 22 54 23 and 54 24 procedure 1 Turn the printer off and then turn the printer on again to clear the error 2 Check the indicated image drum for damaged high voltage contacts and check the contacts for continuity to the high voltage power supply
18. 24 V supply is disabled This safety feature protects the operator from any high voltages when the drum drawer or ITB drawer is open 68 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The printer has recognized the key sequence for selecting the display language Wait for the display language options to appear and then select the appropriate language For more information about selecting the display language see the service manual The printer configuration page is being printed continuously Press CANCEL JOB to terminate continuous configuration page printing and return the printer to the READY state Note The HP LaserJet 4550 Paper Path test runs from the Information Menu A continuous configuration page is printing Press CANCEL JOB to exit the configuration page printout mode If the printer is in the process of printing when CANCEL JOB is pressed the printer finishes printing the buffered pages before returning online ENWW Troubleshooting by using control panel messages 69 Table 2 13 Alphabetical printer messages continued Message Description Action The CPR sensor is not behaving correctly 1 Force a calibration by selecting i from the F t menu See Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only on pa
19. CLJ 5500n C7131A CLJ 5500dn C9657A CLJ 5500dtn C9658A CLJ 5500htn C9659A CLJ 8500 C3983A 60 000 C7096 90986 CLJ 8500n C3984A CLJ 8500dn C3985A ENWW Table 0 1 Supported products continued Supported Model Maximum pages Service manual product number per month printing part number CLJ 8550 C7096A 60 000 C7096 90986 CLJ 8550n C7097A CLJ 8550dn C7098A CLJ 8550gn C7099A CLJ 8550mfp C7834A CLJ 9500n C8546A 60 000 C8546 90956 CLJ 9500hdn C8547A ENWW vi ENWW Contents ENWW 1 Control panel Using the control panel 2 0 0 0 cc eee 2 Control panel layoutS 000 cee eee 2 Setting the control panel display language 8 Upgrading the firmware 0 0000 e eee ee eee 10 Using Internet Explorer for flashable firmware 11 Using HP Web Jetadmin 0000 cee eee 11 Using a manual download for parallel connections 12 Using FIP s cc 2cx 2 cee eae Gk sake de oer ade esalaow dated 13 2 Service and troubleshooting Troubleshooting cece eee eee 17 Pre troubleshooting checklist 2000055 18 Basic troubleshooting 0 00 e eee eee 21 Environmental specifications 00 eee eee 26 Printing information pages 0 eee eee 31 Configuration page 2 0 c eee eee 31 Demonstration page 0 eee ee 33 Menu Map sasssa mE eae a ae ade ea
20. CLJ 8500 8550 374 CLJ 9500 380 imaging drum error messages 74 life out 75 repetitive defects troubleshooting 338 status light 2 status page printing 37 troubleshooting 89 indicator lights See lights ENWW information pages configuration 31 demonstration 33 event log 36 menu map 35 printing 31 troubleshooting 24 initialization hard disk 261 NVRAM 258 instructions work 396 Internet Explorer firmware upgrades 11 INTR initial rotation sequence 393 IP address 397 J jams 2 000 sheet input tray 58 CLJ 2500 clearing 293 CLJ 3500 3700 clearing 296 CLJ 4500 4550 clearing 300 CLJ 4600 5500 clearing 302 CLJ 8500 8550 clearing 305 CLJ 9500 clearing 308 duplexer 56 error messages 64 face down output bin 63 fuser 57 input tray 60 multi bin mailbox 61 persistent troubleshooting 314 transfer wrap CLJ 8500 8550 323 tray 1 65 tray 4 64 troubleshooting checklist 288 Jetadmin firmware upgrades 11 Jetdirect print servers ElO errors K keys See buttons L language control panel 8 languages printer 46 54 48 laser scanner errors 50 115 132 136 LEDs See lights lever toner 95 life expectancies print cartridges 328 Index 403 lights 2 000 sheet input tray CLJ 8500 8550 279 accessory error messages CLJ 2500 47 Attention with Ability to Continue messages CLJ 2500 44 CLJ 2500 locating 2 CLJ 2500 status 39 CLJ 3500 3700 3 CLJ 4500 4550 4 CLJ 4600 5500 5 CLJ 8500 8550 6
21. CLJ 9500 7 service error messages CLJ 2500 50 tray 4 284 troubleshooting 22 locked control panel menus 53 lossy mode 124 LSTR last rotation sequence 394 M Magenta print cartridge light CLU 2500 2 mailboxes bin full error message 77 communication errors 95 communication troubleshooting 208 errors troubleshooting 211 jams 61 manuals ordering iii part numbers iv service notes 397 work instructions 396 margins registration 267 matching color 331 332 media error messages 44 106 size mismatch 104 unexpected size 116 unexpected type 116 media jams See jams memory DIMM errors 48 141 206 insufficient 44 97 206 NVRAM errors 47 212 NVRANM initialization 258 Menu button CLJ 8500 8550 locating 6 menu map 35 menus locked 53 404 Index messages error accessory CLJ 2500 47 alphabetical list 53 Attention with Ability to Continue CLJ 2500 44 CLJ 2500 39 CLJ 8550mfp 218 CLJ 9500 jams 309 numerical list 109 service CLJ 2500 50 mfp error messages 218 models supported iv motors CLJ 2500 illustrations 348 CLJ 3500 3700 355 CLJ 4500 4550 illustrations 362 CLJ 5500 illustrations 372 CLJ 8500 8550 illustrations 378 CLJ 9500 illustrations 382 errors 52 183 multi bin mailboxes bin full error message 77 communication errors 95 communication troubleshooting 208 errors troubleshooting 211 jams 61 networks ElO errors 48 troubleshooting printing 20 non HP supplies 19 37 96 non volatil
22. ENWW Basic troubleshooting 29 Table 2 3 Electrical specifications Product Item 110 volt models 220 volt models CLJ 8500 Power 100 to 127 V 10 220 to 240 V 10 CLJ 8550 requirement 50 60 Hz 2Hz 50 60 Hz 2 Hz circuit capacity for a typical product Power Printing color 375 W Printing color 375 W consumption Printing b w 750 W Printing b w 750 W Standby 190 W Standby 190 W PowerSave lt 45 W PowerSave lt 45 W Off lt 2W Off lt 2 W Minimum 12 Amps at 120 V 6 Amps at 220V recommended CLJ 9500 Power requirement 100 to 127 V 10 50 to 60 Hz 2 Hz 220 to 240 V 10 50 to 60 Hz 2 Hz circuit capacity for a typical product Power Printing 722 W Printing 722 W consumption CLJ 9500n or 741 W CLJ 9500n or 741 W CLJ 9500hdn CLJ 9500hdn Standby 171 W Standby 171 W CLJ 9500n or 173 CLJ 9500n or 173 CLJ 9500hdn CLJ 9500hdn Low PowerSave ENERGY Low PowerSave ENERGY STAR 69 W STAR 69 W High PowerSave Blue High PowerSave Blue Angel 32 W Angel 32 W Off lt 2 Off lt 2 Minimum 15 0 Amps dedicated 10 0 Amps dedicated recommended circuit circuit 30 Chapter 2 Service and troubleshooting ENWW Printing information pages Note You can also gain access to information pages for the CLJ 2500 CLJ 4600 and CLJ 5500 through the embedded Web server For inform
23. F 0 to 35 C 32 to 95 F Allowed 10 to 27 C 50 to 81 F 20 to 40 C 4 to 104 F Humidity Recommended 20 to 60 RH 35 to 85 RH Allowed 10 to 70 RH 10 to 95 or less Altitude Allowed 0 to 2600 m 0 to 8530 ft 0 to 2600 m 0 to 8530 ft CLJ 4500 Temperature CLJ 4550 Recommended 20 to 26 C 68 to 79 0 to 35 C 32 to 95 F Allowed 15 to 30 C 59 to 86 F 20 to 40 C 4 to 104 F Humidity Recommended 20 to 50 RH 35 to 85 RH Allowed 10 to 80 RH 95 or less Altitude Allowed 0 to 3100 m 0 to 10 000 ft O to 3100 m 0 to 10 000 ft 26 Chapter 2 Service and troubleshooting ENWW Table 2 2 Operating environment specifications Product Item Operating Storage CLJ 4600 Temperature Recommended 17 to 25 C 63 to 77 F 0 to 35 C 32 to 95 F Allowed 10 to 30 C 50 to 86 F 20 to 40 C 4 to 104 F Humidity Recommended 30 to 70 RH 35 to 85 RH Allowed 10 to 80 RH 95 or less Altitude Allowed 0 to 2600 m 0 to 8530 ft 0 to 2600 m 0 to 8530 ft CLJ 5500 Temperature Recommended 17 to 25 C 63 to 77 F 0 to 35 C 32 to 95 F Allowed 10 to 30 C 50 to 86 F 20 to 40 C 4 to 104 F Humidity Recommended 30 to 70 RH 35 to 85 RH Allowed 20 to 80 RH 95 or less Altitude Allowed 0 to 2600 m 0 to 8530 ft 0 to 2600 m 0 to 8530 ft CLJ 8500 Temperature CLJ 8550 Re
24. Figure 5 4 CLJ 2500 printed circuit assemblies Reference CLJ 2500 component ak Developing rotary toner level detection PCA Transfer belt home position detection PCA Density detection PCA Waste toner detection PCA Registration detection PCA Dc controller Sub high voltage power supply PCA High voltage power supply PCA O OINIO oa AJOJN Power supply ENWW Major components 349 CLJ 3500 3700 Figure 5 5 CLJ 3500 3700 main components 350 Chapter 5 Illustrations ENWW Reference CLJ 3500 3700 Reference CLJ 3500 3700 component component
25. If the roller is damaged replace the ETB Calibrate the printer after replacing the ETB Paper leading edge sensor is defective Replace the pickup PCB DC controller PCB is defective Replace the DC controller PCB Calibrate the printer after replacing the DC controller CLJ 4600 5500 jams in the top cover Table 3 13 Causes for jams in the top cover CLJ 4600 5500 Issue Solution Fuser paper sensor or sensor lever is defective Make sure the fuser paper sensor lever moves smoothly and is set in place Replace the lever if it is damaged Replace the sensor if it is defective 320 Chapter 3 Jams ENWW Table 3 13 Causes for jams in the top cover CLJ 4600 5500 Issue Solution Fuser sleeve or pressure roller does not rotate smoothly If the fuser drive gears are worn or damaged replace the fuser Fuser inlet guide is dirty or has built up toner Clean the fuser inlet guide Fuser sleeve or pressure roller is dirty worn or damaged Clean the fuser sleeve or pressure roller If it is damaged replace the fuser Fuser delivery sensor or sensor lever is defective Make sure the fuser delivery sensor lever moves smoothly and is set in place Replace the lever if it is damaged Replace the sensor if it is defective Fuser delivery roller is worn Replace the fuser Fuser delivery roller drive gears are worn or damaged Replace
26. One of the following has occurred 1 The communication between the dc controller PCB and the reader controller PCB is faulty This error occurs when the DPPRDY signal is sent for less than 0 25 seconds from the reader controller to the dc controller PCB after power on 2 The communication between the dc controller PCB and the formatter or between the reader controller PCB and the formatter is faulty This error occurs when the signals between the formatter and the dc controller PCB or between the formatter and the reader controller PCB cannot be exchanged for a specific time after power on Table 2 37 Cause and solutions for E240 error CLJ 8550mfp Cause Issue Solution Interface Is the interface cable used to connect No Make the connections cable the copy module and the printer unit secure and turn on the copy connected securely module Video Further are the copy module power Yes Replace the video interface interface cord and the printer unit power cord PCB or the reader controller PCB PCB reader connected securely controller PCB PS PCL Turn the unit off and remove the No Replace the formatter board formatter and turn on the printer unit dc controller and copy module as ong as a Yes Replace the dc controller PCB copier Is E240 indicated PCB E243 CLJ 8550mfp The communication between the control panel CPU PCB and the reader controller PCB is not possible 20 seconds
27. Product CLJ 3500 3700 Instructions Turn the printer on and watch the control panel display When the display begins showing the memory count press and hold DOWN ARROW until all three lights on the control panel are lit Press UP ARROW Press MENU The display should show Press DOWN ARROW until Press SELECT The printer will initialize NVRAM and then continue its power on sequence CLJ 4500 CLJ 4550 Turn on the printer while holding down both the CANCEL JOB and SELECT keys until all the LED lights are on then release the keys Press CANCEL JOB Press SELECT CLJ 4600 CLJ 5500 Turn the printer on and watch the control panel display When the display begins showing the memory count press and hold Down ARROW until all three lights on the control panel are lit 3 Press DOWN ARROW 4 Press PAUSE RESUME The display should show 5 Press DOWN ARROW until iT is highlighted 6 Press DOWN ARROW The printer will initialize NVRAM and then continue its power on sequence CLJ 8500 CLJ 8550 ENWW Not applicable NVRAM Initialization 259 Table 2 53 Performing NVRAM initialization Product Instructions CLJ 9500 Turn the printer on and watch the control panel display When the display begins showing the memory count press and hold W until all three lights on the control panel are lit 3 Press A 4 Press PAUSE RESUME The display should show 5 Press until ris highlighted 6 Press
28. Replace the DC controller PCB 55 5 Do not replace the DC controller PCB or formatter PCB Resend the firmware upgrade before sending any more print jobs CLJ 4500 4550 alternates with Lt 4 I D CLJ 4600 CLJ 5500 The print engine is not communicating with the formatter The communication link between the formatter and DC controller was lost This can occur because of a timing error or intermittent connection between the formatter and DC controller 1 Turn the printer off and on to reset the printer 2 Reseat the connectors between the formatter and DC controller 3 Ifthe problem persists replace the DC controller PCB Calibrate the printer after replacing the DC controller 4 Replace the formatter if necessary Initialize NVRAM 166 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 Indicates a printer command error The commands cannot be exchanged between the printer and its controller 1 Turn the printer off and on to reset the printer 2 Verify that the controller board is fully seated alternates with CLJ 9500 The engine is not communicating with the formatter The communication link between the formatter and the DC controller PCA is lost Turn the printer off and then turn the printer on again to clear the error
29. See Supported media weights and sizes in the appropriate service manual The page might not be printing because the control panel setting for the media type or size does not match the media in the tray See the appropriate service manual for information about configuring the media type and size for each tray The width of the paper guides does not match the size of the media selected for the print job Adjust the paper width guides to the edge of the page Make sure that the media size selected for the print job is the same as the size of media loaded in tray 1 alternates with A print job requested a printer language personality that is not available with this printer The job is not printed and is cleared from memory e If available press HELP for detailed information and then use the UP ARROW and DOWN ARROW to step through the instructions Or e Print the job by using a printer driver for a different printer language or add the requested language to the printer if available 54 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 9500 e The post charger requires cleaning e This warning message is prompted when the replace black cartridge message is cleared and the black cartridge count is reset Printing should continue when this mes
30. ejector rollers on the delivery head assembly 4 If the message persists replace the flat ribbon cable that connects to the delivery head assembly to the controller board PCA 5 If the message persists replace the multi bin mailbox controller board PCA 6 If the message persists replace the delivery head assembly The printer senses a jam in the top face down output bin This message might be caused by the paper not reaching PS11 or by the paper toggling PS11 for an extended period of time 1 Open the left upper door remove the jammed media and close the left upper door 2 Verify that PS30 PS10 PS11 and PS3 sensors and the surrounding area are clean 3 Perform the sensor monitor test in the Service Mode Menu to verify that all paper path sensors are functioning correctly or to locate the jam ENWW Troubleshooting by using control panel messages 63 Table 2 13 Alphabetical printer messages continued Message Description Action The printer senses a jam Because this is a generic jam message the jam might be at any point in the paper path 1 Open and shut the front door of the printer to clear any media from the printer Be sure to check the fuser area because media can get wrapped around the fuser and be difficult to find 2 Check all areas of the printer for jammed media because the printer is unable to determine the location of the jam 3
31. fails to rotate or the ADF motor clock sensor S9 is faulty This error occurs when the number of ADF motor clock pulses within 200 ms is less than a specific value E404 CLJ 8550mfp The error shown on the touch screen display is in the ADF See the CLJ 8550mfp service manual This error indicates that either the delivery motor M5 fails to rotate or the delivery motor clock sensor S13 is faulty This error occurs when the number of ADF motor clock pulses within 200 ms is less than a specific value E411 CLJ 8550mfp The error shown on the touch screen display is in the ADF See the CLJ 8550mfp service manual This error indicates that either the document tray paper sensor S1 or the registration sensor S3 is faulty This error occurs when the sensor output is 2 3 V or more in the absence of paper ENWW Troubleshooting by using control panel messages 239 E545 E546 CLJ 8550mfp The error shown on the touch screen display is in the output device Note Output devices are not supported on the LU8550 MFP This error indicates that the bin flapper 1 for E545 or bin flapper 2 for E546 of the sorter H1 is faulty These errors occur when the bin flapper solenoid sensor PI12 does not detect solenoid operation even when the solenoid SL3 for E545 or SL4 for E546 is driven during initialization or face down delivery This error can also occur when the bin flapper sensor remains on even when the solenoid has stopped operat
32. flashing If the Attention light is still blinking then there is another jam See CLJ 2500 to clear jams from inside the printer on page 294 and CLJ 2500 to clear jams from input areas on page 294 ENWW Jams 295 CLJ 3500 3700 jam locations Figure 3 2 Jam locations CLJ 3500 3700 shown without optional Tray 3 Table 3 1 Jam locations and error messages CLJ CLJ 3500 3700 output bin paper path Tray 1 input trays duplex path oO A ew N path to lower rear door rear output bin CLJ 3500 3700 jam in Tray 1 1 Remove the paper from the tray 2 Grasp the jammed paper by both corners and pull 3 Reinsert the paper in Tray 1 4 Confirm that the paper guides are against the paper without bending it and that the paper does not extend above the fill tabs 5 Press SELECT to resume printing 296 Chapter 3 Jams ENWW CLJ 3500 3700 jam in Tray 2 or Tray 3 1 Ifthe optional Tray 3 is installed pull out Tray 3 and place it on a flat surface If the jammed media is visible remove it from Tray 3 2 If the media is not visible check inside the printer in the top of the tray opening Remove any media 3 Pull out Tray 2 and place it on a flat surface 4 lf the media is visible remove it 5 Ifthe media is not visible check inside the printer in the top of the tray opening Remove any media 6 Replace Tray 2 and optional Tray 3 Note Use Tray 1 and t
33. make sure that all media fragments are removed from the paper path before resuming printing 4 Replace the magenta and yellow print cartridges 5 Close the front door CLJ 3500 3700 jam in the duplexer Note This message appears for HP Color LaserJet 3700dn and 3700dtn printer models only The the message 2 appears on the printer control panel 1 Remove Tray 2 and place it on a flat surface 2 Remove any paper in the top of the tray opening On the left side of the tray opening pull the green lever straight forward until the metal paper access plate duplex pan drops Remove any jammed paper Push the metal paper access plate duplex pan up until it locks in place Replace Tray 2 N Oo oo fF Press SELECT to resume printing ENWW Jams 299 CLJ 4500 4550 jam locations Figure 3 3 Jam locations CLJ 4500 4550 shown with the optional 500 sheet paper feeder and duplex unit installed See the following tables for the associated error messages Table 3 2 Jam locations and error messages CLJ 4500 door duplex cover and rear output door 13 7 Jam in paper feed area Check the entire paper path 1 13 11 Media in the paper path is too 8 13 3 Jam in duplex reverse unit long Check the Tray 1 area Check the Inspect the rear of the duplex unit and entire paper path the duplex tray 2 13 10 Media in the paper path is too 9 13 2 Jam in fusing area Check the short Che
34. on page 330 e Can the customer print from the host system See the appropriate service manual for the product cu See Is the printer ENWW Basic troubleshooting 21 Table 2 1 Basic troubleshooting on successfully When the printer is connected to a grounded power source the control panel lights should be illuminated and the fans should run On the CLJ 2500 the control panel lights should cycle one after another and the cartridge carousel should rotate Verification steps Possible Solutions problems 1 Does the printer turn No power 1 Verify that the printer is plugged into an active electrical outlet of the correct voltage 2 Verify that the power cable is functional 3 Verify that the power switch is on CLJ 2500 that the power on button is pushed in CLJ 4500 that the power switch is switched on CLJ 3500 CLJ 3700 CLJ 4600 CLJ 5500 and CLJ 9500 or that the three power switches are all switched on CLJ 8500 and CLJ 8550 4 CLJ 8500 and CLJ 8550 only Verify that the circuit breaker in the copy module has not been tripped 5 CLJ 9500 only Make sure that the switch is set to low voltage power supply linkage if you suspect a switch problem 22 Chapter 2 Service and troubleshooting ENWW Table 2 1 Basic troubleshooting Verification steps Possible Solutions problems Does the printer turn The control panel is
35. prompted for a password Type put file name RFU Note If the connection timed out message appears type bye and go back to step 7 Various messages appear while the update is in progress 10 Type bye when the FTP prompt returns This could take a few minutes 11 Exit at the regular Command Prompt to return to Windows ENWW Upgrading the firmware 13 14 Chapter 1 Control panel ENWW 2 Service and troubleshooting Contents Troubleshooting co er sadean cee eee 17 Pre troubleshooting checklist nannaa anaana 18 Basic troubleshooting 000 eee eee eee 21 Environmental specifications 2 0 0 0 e eee eee 26 Printing information pageS 00 cece ee 31 Configuration page 2 cee eee 31 Demonstration page 6 eee ee 33 Monu MAP see cared eas Shee ee Wale ee Sale eee eee Bee 35 Event log 2fc0 scene ita Lea ee eee hobs 36 Supplies status page 0 eee 37 Troubleshooting by using control panel messages 39 Control panel lights 0 00 cee 39 Alphabetical printer messages 0 0 0c eee ee eee 53 Numerical error messages anuanua anaana 109 Numbered error codes for the CLJ 8550mfp 218 Service mode functionS 000 0c eee eee 248 To gain access to the service mode 248 Service menu iteMS 2 00 c eee 252 NVRAM Initialization 2 0 eee 258 To perform NVRAM i
36. recommended solutions for jams in each area of the paper path Items are listed in the order in which you should investigate In general items at the beginning of the list are relatively minor repairs Items at the end of the list are more significant repairs CLJ 4500 4550 basic troubleshooting for jams The basic troubleshooting process for jams consists of the following 1 Gather data 2 Identify the cause of the problem 3 Fix the problem CLJ 4500 4550 data collection To troubleshoot jams gather the following information e the exact error code that appears on the control panel e the location of the leading edge of the media in the paper path e whether media is in the paper path when the jam occurs or if media is stuck in the input tray e whether the jam occurs at power up or while paper is moving e whether the media is damaged and if it is where the damage occurs on the media and where in the paper path the media stops e whether the jam occurs when feeding from one particular tray 314 Chapter 3 Jams ENWW e whether the jam occurs only when using duplex printing e whether a particular type of media is jamming e whether any of the supplies are non HP non HP supplies are known to cause jams e whether the customer is storing the media correctly overloading the trays damaging the edge of the media during loading or using media that has already been fed through the printer CLJ 4500 4550 general paper path t
37. shutter is in the open position when the front right door is closed 2 Open and close the front right door to clean the sensor assembly 3 Adjust or replace the sensor cleaning assembly that is actuated by the front right door 4 Replace the density color registration sensor assembly see the service manual for details 54 29 procedure 1 Check the right door actuated cleaning mechanism for correct functionality 2 Adjust or replace the sensor cleaning assembly that is actuated by the front right door 3 Replace the density color registration sensor assembly see the service manual for details ENWW Troubleshooting by using control panel messages 165 Table 2 14 Numerical error messages continued Message Description Action CLJ 3500 3700 alternates with The DC controller is not communicating with the formatter The problem could be caused by a timing error or an intermittent connection Event log only 55 01 00 DC controller memory error 55 5 HP 3700 only A job was sent while Resend Upgrade is on the display 1 Press to continue 2 If the message persists turn the printer off and then on again 3 Reseat or replace the connectors between the DC controller and the formatter 4 lf the problem persists replace the DC controller PCB 5 Replace the formatter For the following specific error perform indicated action 55 01 00
38. troubleshooting 25 CLJ 9500 7 part numbers service manuals iv service error messages CLJ 2500 50 parts 398 recycling 37 Pause Resume button CLJ 4600 5500 5 registration area jams 60 PCAs registration numbers CLJ 4500 4550 267 CLJ 2500 349 registration page printing 266 CLJ 8500 8550 379 repetitive defects troubleshooting 338 PCBs replacing supplies customer responsibilities 17 CLJ 3500 3700 356 reset cold 264 CLJ 4500 4550 363 restoring factory default settings 264 CLJ 4600 367 rollers replacing 17 CLJ 5500 373 Rotate Carousel button 2 41 personalities troubleshooting 46 54 pickup roller replacing 17 S ports troubleshooting 25 45 scan buffer errors 52 207 power secondary error messages CLJ 2500 accessory 47 Attention with Ability to Continue 44 service 50 electrical specifications 28 troubleshooting 22 unplugging printer 18 power on sequences CLJ 2500 386 CLJ 3500 3700 387 CLJ 4600 389 CLJ 5500 390 CLJ 9500 392 pre troubleshooting checklist 18 ENWW Index 405 sensors CLJ 2500 347 CLJ 3500 3700 353 CLJ 4500 4550 359 CLJ 4600 366 CLJ 5500 370 CLJ 8500 8550 376 CPR troubleshooting 70 density troubleshooting 71 149 door tests CLJ 4500 4550 276 OHT troubleshooting 151 temperature humidity 143 testing CLJ 4500 4550 275 tray 4 283 separation roller replacing 17 service error messages CLJ 2500 50 service manuals ordering iii part numbers iv Service menu CLJ 2500 252 CLJ 3500 3700 253 CLJ
39. 1 Face down delivery roller 11 Registration roller 2 Laser scanner assembly 12 Tray 2 separation roller 3 Print cartridge 13 Tray 2 pickup roller 4 Photo sensitive drum 14 Media sensor 5 Primary transfer charging roller 15 Secondary transfer charging roller 6 Toner collection unit 16 ITB cleaning blade 7 Transfer unit 17 Duplex feed roller 8 Registration shutter 18 Fuser 9 Tray 1pickup roller 19 Pressure roller 10 Tray 1 separation roller 20 Fuser sleeve unit ENWW Major components 351 Figure 5 6 CLJ 3500 3700 location of switches Reference CLJ 3500 3700 component swt Door switch SW1001 Test print switch SW3001 Power switch 352 Chapter 5 Illustrations ENWW Figure 5 7 CLJ 3500 3700 location of sensors Reference CLJ 3500 3700 Reference CLJ 3500 3700 component component PS1 Tray 1 paper sensor PS10 Duplexing feed delivery sensor PS2 Cassette paper sensor PS11 Face up tray sensor PS4 Registration paper sensor PS12 Color misregistration sensor PS5 Media sensor PS13 Waste toner level sensor PS6 Fuser front paper sensor PS14 Developing engaging sensor PS7 Fuser delivery paper sensor PS15 Environmental conditions sensor PS8 Face down delivery paper PS16 Secondary transfer roller sensor engaging sensor PS9 Reveresed paper sensor ENWW Major components 353 Figure 5 8 CLJ 3500 3700 location of solenoids and clutc
40. 1 Press SELECT to open the CLJ 3700 2 Press the DOWN ARROW to highlight CLJ 4600 s CLJ 5500 3 Press SELECT to select 4 Press the DOWN ARROW to highlight 5 Press SELECT to select CLJ 4500 1 Press MENU until 2H appears on the CLJ 4550 printer control panel display 2 Press ITEM until 3 appears on the display 3 Press SELECT to print the event log CLJ 8500 Press MENU to cycle through the printer control panel CLJ 8550 menus From the Information Menu select F h Press SELECT to print the event log CLJ 9500 Press SELECT to open the menus NY 0 N Use UP or DOWN to scroll to Diagnostics and then press Select 3 Use UP or DOWN to scroll to Print Event Log and then press Select 36 Chapter 2 Service and troubleshooting ENWW Supplies status page The supplies status page lists the remaining life of HP print cartridges and HP imaging drums It also lists the estimated number of pages that can be printed with the remaining supplies number of pages printed and other supplies information The following information is included on the supply status page of most printers Ordering Information Contains basic information about how to order new HP supplies Print cartridge Contains a section for each of the print cartridges and provides information about HP print cartridges This information includes the part number for each print cartridge the toner level in each print cartridge and the
41. 11 by 17 inch sized media Wrong media size feed jam The controller board detects media size with the registration roller paper sensor PS1 and it stops the engine if the media size differs more than 15 mm between the specified media size and the actual media size On the other hand if the difference is within 7 5 to 15 mm or 3 7 mm or less the media is automatically delivered Door open jam The sensors listed below detect the media when a cover is opened or closed registration paper roller sensor PS1 pick up unit paper sensor PS17 separation sensor PS5 top face down output bin delivery sensor PS11 e fusing delivery sensor PS1903 Initial residual jam The sensors listed below detect the media the specified time after the power switch is turned ON e separation sensor PS5 e fusing delivery sensor PS1903 ENWW Jams 307 CLJ 9500 jam locations O SR42 O Y SR6 Rs SR4 SR3 INO wY OV SR33 Z R30 O 2 3 3 5 gt SR12 SR31 vw O SR11 VW SR14 ee SR13 Figure 3 6 Printer paper path CLJ 9500 308 Chapter 3 Jams ENWW Table 3 7 Paper path jam sensors CLJ 9500 Sensor Sensor name Sensor Sensor name SR3 Registration sensor SR14 Tray 3 sensor B SR4 Transparency motor SR30 Duplexer media re feed sensor SR5 Multifeed sensor SR31 Dup
42. 24 UH and J1301 1 GND PCB on the multi feeder tray PCB change from 0 to 24 V 24 UH Is 24 UH present on the multi feeder No See the CLJ 8550mfp service tray PCB and the holding plate manual solenoid Holding Disconnect connector J1302 of the No Replace the holding plate plate holding plate solenoid from the multi solenoid solenoid _ feeder tray PCB Measure the Yes Replace the dc controller resistance between connectors J1302 PCB 1 MPTSLD and J1302 2 24 UH on the harness side Is it about 160Q 226 Chapter 2 Service and troubleshooting ENWW E054 CLJ 8550mfp Note This error pertains to the duplexing unit which is an accessory The duplexing feeding roller 1 home position sensor PS23 does not detect the home position of the duplexing feeding roller 1 when copy paper is being fed to the duplexing unit Table 2 25 Cause and solutions for E054 error CLJ 8550mfp Cause Issue Solution Duplexing Is the duplexing feeding roller 1 home Yes Replace the lever feeding position sensor level damaged roller 1 home position sensor lever Duplexing Is the drive gear of the duplexing feeding Yes Replace the worn or feeding roller worn or cracked cracking gear roller drive gear Duplexing Are connectors J2003 J2004 and J2007 No Connect the connectors driver on the duplexing driver PCB connected securely PCB securely Duplexing Replace the duplexing feeding roller 1 Yes
43. 267 size mismatch error message 104 tray 1 errors 54 106 181 unexpected size message 116 unexpected type message 116 See also 2 000 sheet input tray ENWW troubleshooting accessory errors CLJ 2500 47 calibration 263 checklist 18 CLJ 8550mfp 218 color 331 332 333 configuration page 18 control panel 18 22 engine test 269 error messages alphabetical list 53 error messages numerical list 109 jams See jams networks 20 paper path 288 289 power 22 repetitive defects 338 service error messages CLJ 2500 50 software 24 supplies 17 80 U unexpected size message 44 116 unexpected type message 116 unlocked toner lever 95 unplugging printer 18 upgrading firmware using FTP 13 using HP Web Jetadmin 11 using Internet Explorer 11 using manual download 12 versions supported 10 USB ports troubleshooting 25 V voltage 19 28 Ww WAIT sequence 393 waste toner errors 108 149 Web Jetadmin firmware upgrades 11 websites firmware upgrades 10 HP Web Jetadmin 11 parts information 398 support 398 work instructions 396 work instructions 396 Y Yellow print cartridge light CLJ 2500 2 ENWW Index 407 408 Index ENWW Supported Products hp color LaserJet 2500 2500L 2500n 2500tn 2500se hp color LaserJet 3500 3500n hp color LaserJet 3700 3700n 3700dn 3700din hp color LaserJet 4500 4500n 4500dn hp color LaserJet 4550 4550n 4550dn 4550hdn hp color LaserJet 4600 4600dn 4600dtn 4600hdn hp color LaserJet 5500 550
44. 3700 series printer is 10370003 1 Press UP ARROW or DOWN ARROW until the first digit of the PIN is displayed 2 Press SELECT to save the digit The display will replace the digit with an asterisk 3 Repeat steps 1 and 2 until all eight digits are entered 4 Press BACK ARROW at any time to move to the previous digit ENWW Service mode functions 249 Table 2 51 Gaining access to the service mode Product Instructions CLJ 4500 Note CLJ 4550 In the CLJ 4500 when the configuration page is printed while the printer is in service mode all event log messages are printed as well The CLJ 4550 event log can be printed from the Information menu If both the formatter and DC controller are replaced at the same time use service mode to execute the color plane registration sequence to ensure optimum print quality 1 Hold down the CANCEL JOB key and SELECT key while turning the printer on until the display is blank and the three LEDs are on 2 Press the right side of the MENU key and then press the SELECT key Service mode appears on the front panel briefly followed by two rows of asterisks The printer completes its normal start up cycle and then appears on the front panel Entering the Service Mode Menu 1 Froma state press MENU until appears 2 Press ITEM the left side of the key and VALUE simultaneously 3 Press the MENU key to access the Service menu CLJ 4600 The
45. CLJ 4600 k black 4 Replace the laser CLJ 5500 c scanner assembly if it is cyan defective Calibrate the M magenta printer after replacing the Y yellow laser scanner 5 Ifthe error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Troubleshooting by using control panel messages 137 Table 2 14 Numerical error messages continued Message Description Action A laser scanner assembly CAUTION alternates with error occurred When servicing the printer a with the top cover off cover X description the top of the printer to CLJ 9500 1 scanner error prevent light leaks that might 2 scanner startup error blind the laser scanner beam 3 scanner rotation error detect sensors 1 The following are color Y description ee specific steps 0 no color K black K laser C cyan Check connector J3012 on M magenta the laser driver PCA Y yellow connector J3056 on the scanner motor connector J3061 on the beam detect PCA connectors J812 and J815 on the T driver PCA and connector J110 on the DC controller PCA C laser Check connector J3011 on the laser driver PCA connector J3059 on the scanner motor connector J3062 on the beam detect PCA connectors J812 and J815 on the T driver PCA and connector J110 on the DC controller PCA M laser Check connector J3010 on the laser driver PCA connector J3053 on the scanner moto
46. Click the product type such as laserjet or laserjet color ON Oa Ff Ww Select the product that you want from the list ENWW Embedded web server 397 Service websites HP Customer Care Online Go to the following Web site for information about software drivers support documentation and frequently asked questions http www hp com go support HP learning center The learning center make Web based training modules available to HP partners To open an account and access the learning center go to the following Web sites e Direction for opening an account htpp vsslfpro zcce compaq plm contact index html e Log in page htto vsslfpro compagq plm Parts Use the following Web site to search for HP product parts by using the HP product name or model number or part number or by selecting an HP product from a list See the hp LaserJet Quick Reference Color Parts Guide 5851 1642 for a complete parts list and printer illustrations http www hp com go partsinfo To order parts go to htto www partsdirect ho com 398 Appendix A Service support ENWW Index Numerics 2 000 sheet input tray DIP switches CLJ 8500 8550 280 jams 58 motor errors 208 sensor test CLJ 4500 4550 278 status light CLJ 8500 8550 279 A access denied control panel menus 53 accessory error messages CLJ 2500 47 alphabetical list error messages 53 Attention light accessory error messages CLJ 2500 47 Attention
47. DOS Editor window Follow the instruction in table 2 52 on page 252 to modify or set service information To gain access to the service mode Table 2 51 Gaining access to the service mode Product Instructions CLJ 2500 The CLJ 2500 does not have a control panel For service mode functions open the embedded Web server by using one of these methods e From the HP Color LaserJet 2500 Series Toolbox click the picture of the printer on the Device tab Windows 98 NT 4 0 Me 2000 and XP only e For network printers only type the IP address for the printer To find the IP address print a configuration page at the printer control panel by pressing GO and CANCEL JOB simultaneously The embedded Web server has three tabs that contain settings and information about the printer See the service manual for more information about each tab Note For more information about the embedded web server see the HP Embedded Web Server for HP LaserJet Printers and MFPs manual 248 Chapter 2 Service and troubleshooting ENWW Table 2 51 Gaining access to the service mode Product Instructions CLJ 3500 3700 The Service menu is PIN protected for added security Only authorized service people have access to the Service menu When you select SERVICE from the list of menus you are prompted to enter your 8 digit PIN number The PIN for the HP Color LaserJet 3500 series printer is 10350003 and for the HP Color LaserJet
48. FM1 or FM6 6 paper path fan FM2 7 fuser fan FM4 9 ozone exhaust fan FM7 1 Turn the printer off and then turn the printer on again to clear the error Check the indicated fan and check for correct movement of the blades and motor Check the connectors that apply to the amp error i J3078 and J820 on the T driver PCA power supply and J102 on the DC controller PCA J3079 and J3087 at the fans intermediate connector J086 and J811 on the T driver PCA amp J818 on the T driver PCA 7 J819 on the T driver PCA J3089 at the fan and J823 on the T driver PCA Check connector J1 on the low voltage power supply J210 and J202 on the high voltage power supply J608 and J612 on the P driver PCA and J806 on the T driver PCA Replace the fan if voltage is supplied to it at power on and it fails see the service manual for details 180 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 continued 6 Replace the T driver PCA see the service manual for details 7 Replace the DC controller PCA if 3 FM5 see the service manual for details CLJ 8500 8550 The paper diverter inside position causing an error in feeding from tray 1 the upper right door is out of 1 Open the upper right door and check for a jam or misfed media 2 Turn the
49. Note the connection on the ITB assembly located on the front lower left hand corner of the assembly When the drawer is closed the connector mates with a receptacle connector on the drawer Verify that the connector and wiring are in good condition Make sure that there is no paper in the connector at the base of the drawer 6 Verify that the drum motor M4 is rotating the imaging drum and the ITB Run the drum test from diagnostic mode to verify drive spindle movement for both the imaging drum and ITB 7 Verify that the imaging drum connector is seated into the connector J204 of the developing PCB ENWW Troubleshooting by using control panel messages 101 Table 2 13 Alphabetical printer messages continued Message Description Action The top output bin holds 250 sheets of paper Sensor PS9 along with its sensor flag detects the height of the output paper stack Perform the action items if this message appears when no paper is in the output bin 1 Verify that the PS9 sensor flag and arm move freely 2 Verify PS9 is free of dust and debris top assembly cover must be removed to access sensor 3 Verify all connectors are firmly seated Refer to the wiring diagram Note PS9 a three wire sensor plugs into a through wall connector on the printer s chassis and then into a 14 pin wire harness which plugs into J206 on the developing PCB All signals from the develop
50. OO oa FPF OON a After setting the density for each color press PAUSE RESUME The default values is 0 for each color a greater negative number might result in lighter or less dense mid tones for a particular color plane and a greater positive number might result in darker or more dense mid tones for a particular color plane Image quality 337 Repetitive defects troubleshooting Repetitive defects are defects that occur on the page Most repetitive defects are caused by problems with one of the following parts e Developer roller e Fuser e Charge roller e Imaging drum e Cleaning roller e Transfer belt or transfer drum e Transfer roller See the service manual for the specific product model for the appropriate repetitive defect ruler The first occurrence of a repetitive print defect is the defect closes to the leading edge of the media Measure from the first occurrence of the print defect to the first repetition of the defect and compare this measurement to the repetitive defect table in this section CAUTION Do not expose the imaging drum to light and be careful not to scratch or get fingerprints on the drum surface during cleaning Do not blow on the imaging drum 338 Chapter 4 Print quality ENWW Imaging drum defects The following are some causes of imaging drum defects e Damage such as scratches or dents on the imaging drum These usually appear as black or white marks on the page e Paper dust adhering
51. Replace the sensor feeding home position sensor Is the problem roller 1 corrected home position sensor PS23 Duplexing Disconnect connector J2003 of the No Replace the duplexing feeding duplexing feeding clutch and measure feeding clutch clutch the resistance between connectors CL5 J2003 1 and J2003 2 on the harness side Is it about 1409 ENWW Troubleshooting by using control panel messages 227 Table 2 25 Cause and solutions for E054 error CLJ 8550mfp Duplexing motor M8 Duplexing driver PCB Replace the duplexing motor Is the problem corrected Yes Replace the duplexing motor M8 No Replace the duplexing driver PCB E055 CLJ 8550mfp The duplexing driver PCB has detected that the horizontal registration guide has moved in excess of the maximum distance from when the home position was detected Table 2 26 Cause and solutions for E055 error CLJ 8550mfp Cause Issue Solution Horizontal Is the horizontal registration guide No Mount the guide correctly registration mounted correctly guide Horizontal Is the horizontal registration guide Yes Replace the lever registration home position sensor lever damaged guide home position sensor PS25 lever Horizontal Is the horizontal registration guide drive Yes Replace the worn or cracked registration gear worn or cracked gear guide drive gear Duplexing Are connectors J2
52. The cleaning process takes a few minutes 326 Chapter 4 Print quality ENWW Table 4 1 Printer cleaning page continued Product Instructions The CLJ 4500 4550 do not include this feature The CLJ 4600 5500 do not include this feature The CLJ 8500 8550 do not include this feature Find F in the Print Quality menu under the Configure Device menu ENWW Printer cleaning page 327 Life expectancies of print cartridges Table 4 2 Life expectancies of print cartridges Product Description Estimated life at 5 coverage CLJ 2500 Black print cartridge 5 000 pages Cyan print cartridge 4 000 pages Yellow print cartridge 4 000 pages Magenta print cartridge 4 000 pages CLJ 3500 Black print cartridge 6 000 pages Color print cartridges 4 000 pages CLJ 3700 Print cartridges 6 000 pages CLJ 4500 Black print cartridge 9 000 pages CLJ 4550 Cyan print cartridge 6 000 pages Yellow print cartridge 6 000 pages Magenta print cartridge 6 000 pages CLJ 4600 Black print cartridge 9 000 pages Cyan print cartridge 8 000 pages Yellow print cartridge 8 000 pages Magenta print cartridge 8 000 pages CLJ 5500 Black print cartridge 13 000 pages Cyan print cartridge 12 000 pages Yellow print cartridge 12 000 pages Magenta print cartridge 12 000 pages CLJ 8500 Black print cartridge 17 000 pages CLJ 8550 Cyan print cartridge 8 500 pages Yellow print cart
53. The printer expected a page to come through the fuser but the paper has not toggled PS1903 or PS1903 has been toggled an extended period of time WARNING Do not touch the fuser it could be very hot and could cause burns _ Open the left lower cover remove the jammed media and close the left lower cover 2 On the left side of the fuser check the fuser exit flag and the reflective absorptive sticker that the sensor PS1903 uses 3 Perform the sensor monitor test in the Service Mode Menu Toggle PS1903 and check to make sure that sensor 2 on the printer control panel indicates 1 on when toggled ENWW Troubleshooting by using control panel messages 57 Table 2 13 Alphabetical printer messages continued Message Description Action Check the event log message These instructions are for event log message There is a jam in the 2 000 sheet input tray Event log message 13 11 1 lt x gt lt x gt Description 1 Timeout at the paper entry sensor PS31 B Timeout at the paper exit sensor PS32 1 Open the vertical transfer unit VTU and remove any media 2 Verify that the paper entry sensor PS31 moves freely 3 Verify that the feed separation and pickup rollers are correctly seated 4 Ifthe problem persists open the VTU and override the VTU closed sensor PS35 Perform a paper path test from the 2 000 sheet input unit and v
54. a 110 V fuser ina 220 V printer or vice versa 6 fuser heater cutoff 7 fuser motor malfunction see recommended action for 50 7 Fuser error Note Closely inspect the mechanical linkage The gears along the gear drive path can bind the gears which will prevent M1 from rotating ENWW Troubleshooting by using control panel messages 125 Table 2 14 Numerical error messages continued Message Description Action CLJ 4600 CLJ 5500 A fuser error has occurred X Description 1 low fuser temperature 2 fuser warmup service 3 high fuser temperature 4 faulty fuser 5 inconsistent fuser 6 open fuser heating circuit between the fuser and low voltage power supply 8 low fuser temperature subthermistor 9 high fuser temperature subthermistor 1 Turn the printer off and allow it to cool down 2 Reinstall the fuser and check the connector J4034 that connects the fuser and the printer Replace the connector if it is damaged 3 Turn the printer off and remove the fuser Measure the resistance between the connector pins on the fuser If resistance does not meet the following guidelines replace the fuser J4034 5 to J4034 6 300 to 500 K ohms J4034 1 to J4034 2 less than 1 K ohm 4 Check for continuity between connector pins J4034 4 and J4034 2 If no continuity exists replace the fuser 5 If the error persists replace the fuser power supp
55. aligns the firmware with the formatter Not performing NVRAM initialization could result in lower print quality Before initializing NVRAM be sure to gather and write down the following information if possible e Total page count and color page count e Percentage of life remaining for both the transfer kit and the fuser kit e Serial number Note This information is available on the configuration page or through the service mode After replacing the firmware or the formatter board the following settings are changed or lost If you do not want to accept the new values use the service mode to enter the previous settings that you wrote down before initializing e Total page count and total color page count e Transfer kit percentage of life remaining e Fuser kit percentage of life remaining e Printer serial number To perform NVRAM initialization Table 2 53 Performing NVRAM initialization Product Instructions Turn the printer off Press and hold the Go button Turn the printer on and continue to hold the GO button After the Go Ready and Attention LEDs turn on continue holding for at least 20 seconds During this process the Attention Ready and Go LEDs will each turn off Release the GO button The device LEDs begin cycling from front to back The NVRAM init process runs until the printer is in the Ready state 258 Chapter 2 Service and troubleshooting ENWW Table 2 53 Performing NVRAM initialization
56. bushing 7 Ifthe error persists replace the paper deck drive assembly 8 If the error persists replace the paper tray tray 4 for the 2 000 sheet input unit 208 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action A 2 000 sheet input unit 1 Verify that the C link and feed motor error exists power cables are connected G 2 Turn the printer off and on CLJ 8500 8550 to reset the printer 3 Verify that there are no objects in the left side of the tray 4 Verify that the paper tray raised sensor PS34 is working correctly perform a sensor test 5 Check for correct installation of the pick up roller 6 Check the pick up assembly and the paper deck drive assembly cabling 7 Ifthe error persists replace the pick up assembly 8 If the error persists replace the paper deck drive assembly ENWW Troubleshooting by using control panel messages 209 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 A 2 000 sheet input unit lifting motor and feed motor error exists 1 Verify that the C link and power cables are connected 2 Turn the printer off and on to reset the printer 3 Verify that no objects are in the left side of the tray 4 Verify that you can move the lifting plate freely by hand 5 Verify that the pa
57. but do not advance the paper replace the feed and separation rollers by using the maintenance kit 6 Ifthe rollers do not rotate or do not drop down replace the pickup assembly 7 Ifthe problem persists replace the VTU which includes PS31 ENWW Troubleshooting by using control panel messages 59 Table 2 13 Alphabetical printer messages continued Message Description Action Check the event log message These instructions are for event log message There is a jam in the 2 000 sheet input tray Event log message 13 11 3 lt x gt X description 1 At power on the paper entry sensor PS31 in the VTU is active B At power on the paper exit sensor PS32 in the VTU is active 1 Open the vertical transfer unit VTU and remove any media 2 Verify that PS31 and PS32 in the VTU move freely 3 If either PS31 or PS32 is damaged replace the VTU The printer senses a jam in the transfer or registration area in an input tray or in the duplexer 1 Open the front door press the white button on the lower green lever and swing the lever to the right Open the right upper door remove the transfer drum and remove the jammed media from under the metal paper guide Reinstall the transfer drum and close the right upper door Swing the lower green lever to the left and close the front door 2 Open each input tray remove any jammed media a
58. connectors J1801 and J1802 for OHT sensors 1 and 2 connector J214 on the controller board and relay connector J17 5 If the error persists replace OHT sensors 1 and 2 6 If the error persists replace the controller board ENWW Troubleshooting by using control panel messages 117 Table 2 14 Numerical error messages continued Message Description Action alternates with ie CLJ 9500 Tray is loaded with media that is not of the same type configured for the tray Note The printer only detects media or OHTs 1 Check the media type definition for the specified tray If necessary reconfigure the media type for the tray If the error does not clear turn the printer off and then turn the printer on again If the error persists check the transparency sensor for correct functionality Check connector J3032 on the transparency sensor intermediate connector J3027 and connector J121 on the DC controller PCA alternates with CLJ 4600 CLJ 5500 A printer error has occurred X Description 1 unknown misprint error 2 beam detect misprint error 3 media feed error size 4 no VSYNC error 5 media feed error type 6 ETB detection error 7 feed delay error 9 noise VSREQ Press SELECT to continue or press HELP for more information If the message persists turn the printer off and then on 118 Chapter 2 Service and troub
59. controller PCB connector J1008 4 Defective media sensor Replace the media sensor 5 Defective DC controller PCB Replace the DC controller PCB ENWW Troubleshooting by using control panel messages 157 Table 2 14 Numerical error messages continued Message CLJ 3500 3700 continued Description 54 32 error The image density adjustment value color misregistration adjustment value and PWM adjustment value see note are stored in the EEPROM NVRAM of the formatter Whenever a formatter or laser scanner unit is replaced you must calibrate the printer to update the values a Image density adjustment on formatter replacement b Color misregistration adjustment on formatter replacement c PWM adjustment on both formatter and laser scanner unit replacement Note The PWM adjustment value enables reproduction of an image in the best tone The formatter determines the value based on the amount of lase Action 54 32 Electrical Adjustment When the media sensor is replaced the light intensity of the sensor must be adjusted Follow the procedure below to adjust the light intensity 1 Turn the printer off 2 Open the front door 3 While pressing down the engine test print switch turn the printer on 4 Close the front door 5 Load paper into Tray 1 use plain white paper for test printing 6 As the printer goes into READY period press the
60. damaged replace the feed roller Drive gears are damaged Check the drive gears in the paper pickup unit Replace the pickup drive assembly if the gears are damaged Connector to the printer has poor contact Reconnect all connectors to the printer Replace any damaged connectors Paper feeder pickup solenoid is damaged 1 Disconnect the connector J4006 for the paper feeder solenoid from the paper feeder PCB 2 Measure the resistance between the cable side connectors J4006 2 and J4006 1 3 Ifthe measured resistance is NOT about 160 ohms replace the paper feeder pickup solenoid Pickup motor is defective Replace the paper pickup drive assembly Paper feeder PCB is defective Replace the paper feeder PCB Paper pickup assembly is defective Replace the paper pickup assembly DC controller PCB is defective Replace the DC controller PCB Calibrate the printer after replacing the DC controller CLJ 4600 5500 jams in the paper path Table 3 12 Causes for jams in the paper path CLJ 4600 5500 Issue Solution Registration shutter is defective This applies to jams that occur before the registration roller Make sure that the shutter is clean that it moves smoothly and that the spring is in place If the shutter is damaged replace the paper pickup assembly ENWW Persistent jam troubleshooting 319 Table 3 12 Causes for jams in the pa
61. delay jam 1 The page has not reached the pick up unit paper sensor PS17 within about e 1 2 seconds after leaving tray 2 e 1 3 seconds after leaving tray 3 ENWW Jams 305 Table 3 6 Jam detection CLJ 8500 8550 continued Issue Cause Pick up delay jam 2 The media does not reach the registration roller paper sensor PS1 within about e 1 9 seconds after leaving tray 2 e 2 0 seconds after leaving tray 3 e 1 8 seconds after leaving tray 1 Transfer jam The separation sensor PS5 does not detect the media for the specified time or longer within 1 5 to 2 2 seconds after the top of paper signal e about 0 1 seconds normal mode e about 0 4 seconds overhead transparency mode e about 0 3 seconds high gloss mode Fusing delivery paper delay jam The media has not reached the fusing delivery sensor PS1903 since the top of paper signal within about e 3 2 seconds normal mode e 12 8 seconds overhead transparency mode e 9 6 seconds high gloss mode Fusing delivery stationary jam The media has not passed through the fusing delivery sensor PS1903 after PS1903 detects the leading edge of the media within approximately e 2 4 seconds normal mode letter sized media landscape e 9 6 seconds overhead transparency mode letter sized media landscape e 7 2 seconds high gloss mode letter sized media landscape e 4 2 seconds normal mode 11 by 17 inch sized media e 17 0
62. firmly seated to connector J1003 of the DC controller PCB 4 If the message persists use an ohmmeter to verify functionality of SW1 SW2 indicates whether the printer s toner access cover is closed When the toner access cover is closed a lever is pushed down This in turn rotates a pivot forward opening the top cover switch SW2 1 Close the top cover 2 If the message persists remove the printer s top assembly cover and check all mechanical linkages associated with swe 3 Verify that the connector on J1003 of the DC controller PCB is firmly seated 66 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action Switch SW5 monitors the closing of the printer s upper rear door this door provides access to the fusing assembly When the fusing door is closed a tab on the rear door pushes a door switch actuator that runs along the left side of the printer and closes SW5 1 Close the upper rear drawer 2 If the message persists remove the printer s left side cover and inspect the mechanical linkage of SW5 and the lever 3 Refer to the wiring diagram and verify that all connections J103 of the DC controller PCB and to SWS5 are firmly seated 4 Verify that both the drum drawer and the ITB drawer are firmly closed Closing these drawers also closes SW4 Note The ITB drawe
63. functioning correctly 1 Identify the back cover opposite from the tray door Remove the four screws in the back cover and then remove the back cover 2 Open tray 4 3 Set the DIP switches on the controller PCA to motor test mode 4 Pull out on the blue handle to turn the power supply switch to diagnostic mode ifthe motors are working correctly you hear them as they rotate continuously ifthe motors do not rotate replace the corresponding FRU either the paper pickup assembly or the paper deck drive assembly 5 To stop the test set the power switch to the operational mode push in and 282 Chapter 2 Service and troubleshooting ENWW reset the DIP switches on the controller PCA to the OFF position Tray 4 standalone running test This test verifies that tray 4 is functioning correctly For this test use the LED that is located on the controller PCA on tray 4 Note If tray 4is mounted underneath the printer jams might occur because the printer will not pick up the media To prevent excessive jams during this test feed only six to eight pages 1 Make sure that media is loaded in tray 4 2 Set the DIP switches on the tray 4 controller PCA for standalone running mode 3 Pull the blue power supply switch outward to set the power supply switch to the diagnostic mode The motors start and media should lift from the tray if the unit does not work correctly the lower service LED on the controller PCA flash
64. gear trains for damage Replace them if necessary ENWW Troubleshooting by using control panel messages 215 Table 2 14 Numerical error messages continued Message Description Action CLJ 3700 A critical hardware error has occurred 1 Turn the printer off and then on again 2 Reseat the firmware DIMM 3 Reseat the formatter PCB 4 Replace the firmware DIMM 5 Replace the formatter PCB CLJ 4500 4550 CLJ 4600 CLJ 5500 A hardware error has occurred X Description 01XX IO ASIC register error 02XX video ASIC register error 03XX IDE ASIC register error CLJ 4500 4550 1 Turn the printer off and then on 2 Ifthe problem persists reseat the firmware DIMM 3 Reseat the formatter 4 lf the problem persists replace the firmware DIMM 5 If the problem persists replace the formatter and then calibrate the printer CLJ 8500 8550 A hardware error has occurred X Description 01XX IO ASIC register error 02XX video ASIC register error 03XX IDE ASIC register error 1 Turn the printer off Disconnect all communication cables and EIO cards Turn the printer on N Run extended formatter diagnostics from the Service Mode Menu to troubleshoot the failure 3 If the problem persists without the communications connected replace the formatter board 216 Chapter 2 Service and troubleshooting ENWW Tabl
65. ideas 387 CLJ 4500 4550 ce eget ace ae nde dee had wae ee tes 389 CLIN 4600 tics he Se i Dee kd be ed 2 be eee 389 GE eei aries eae a EEE LEE EEE E E E E 390 GEJ 8500 B50 rae ree a a aoe ae 391 GLJOSOO rrer e A EE ERE E ERR 392 ENWW 345 Major components CLJ 2500 major components Figure 5 1 CLJ 2500 assembly locations without optional trays gt z o gt l gt 2 2 52 2 E S g EIS 92i 25 ole eisg ol EII Le S O 8 Pe CN ee OS 3 5 8 8 4 is is OJ EIE ZJE 5 ta i g ioon o gt 2 gt ala o FE 2 5 2 amp El alaia g 0 8 a 8 o Elos ol gl olElo O GLISE 0 2 Bi s N s 5 3 3 2 2 38 8 DIZ g Ojas ne s2i a 5 c i a Xie alom ENWW 346 Chapter 5 Illustrations Figure 5 2 CLJ 2500 photosensors and switches Reference CLJ 2500 component 1 Tray 1 sensor Roller engaging sensor Developing rotary engaging sensor Fuser delivery sensor Front fuser detection sensor Door open detection switch NIOJ ou amp wo Pp Power switch ENWW Major components 347 Figure 5 3 CLJ 2500 motors and fans Reference CLJ 2500 component Reference CLJ 2500 component 1 Engaging motor 4 Fuser motor Developing rotary motor 5 Main motor Toner cartridge motor 6 Cooling fan 348 Chapter 5 Illustrations ENWW
66. initialized This will render the disk non functional but the configuration page will show that the disk is installed This is a request to confirm initialization of the printer hard disk see PRESS SELECT TO INITIALIZE DISK above Initialization will perform a high level check of the disk Ss If you want to proceed with initialization press SELECT 2 If you do not want to initialize the printer hard disk wait until the message clears 10 seconds or press GO and the disk will not be initialized This will render the disk non functional but the configuration page will show that the disk is installed alternates with or with The RAM disk had a critical failure and can no longer be used For CLJ 3700 printers printing can continue for jobs that do not require the RAM disk To remove the message from the display press For other printers turn the printer off and then turn the printer on again to clear the error 98 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action alternates with or with The requested operation could not be performed You might have attempted an illegal operation such as trying to download a file to a nonexistent directory 1 Try again with a different file or directory 2 Check the driver settings to see if any job retention fea
67. is firmly seated into both the sensor assembly and connector J206 of the developing PCB 144 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 5 Verify that PS11 is CLJ 4500 4550 connected and continued functioning correctly 6 Verify that all connectors to the developing PCB and the DC controller PCB are firmly seated 7 Verify that the rotary drive assembly is working Replace it on older units that have more than 50K of life The following URL provides help with cartridge installation and removal http www hp com go lisupplies ENWW Troubleshooting by using control panel messages 145 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 The print cartridge carousel is not working correctly This could be caused by an obstruction in the carousel path such as a loose shutter or disengaged print cartridge In very rare circumstances this error can be caused by a broken gear on the rear of the carousel assembly or a broken position flag on the carousel gear 1 Turn the printer off and on to reset the printer Open the carousel door and waste toner tray Look for an obstruction such as a print cartridge shutter catching on the waste toner tray Verify that the toner lock lever is fully locked If the message does no
68. motor C J607 and J614 on the P driver PCA J701C for the encoder and J3095 on the motor M J605 and J615 on the P driver PCA J701M for the encoder and J3093 on the motor Y J603 and J617 on the P driver PCA J701Y for the encoder and J3091 on the motor 198 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 53 08 PRINTER 10 Check the process alternates with cartridge drive assembly E encoders and motors for i correct functionality CLJ 9500 Replace the encoders continued and motors if necessary 11 Replace the process cartridge drive assembly see the service manual for details 12 Replace the DC controller PCA see the service manual for details Registration motor errors 1 Turn the printer off and then turn the printer on again to clear the error 2 Use the hardware diagnostic tools from the control panel to test the registration motor for correct functionality 3 Check the registration motor drive linkages for correct functionality Replace the linkages if necessary 4 Check connector J3036 at the registration motor and connector J117 on the DC controller PCA 5 Replace the registration motor see the service manual for details 6 Replace the DC controller PCA see the service manual for details ENWW Troubleshooting by using control panel messages 199
69. motor M5 Toner cartridge motor M2 Pick up motor FM1 Large fan M3 Carousel motor FM2 Small fan M4 Drum motor FM3 Front fan 362 Chapter 5 Illustrations ENWW Figure 5 16 CLJ 4500 4550 PCB locations Table 5 2 PCB assembly Reference CLJ 4500 4550 component 1 Developing PCB DC controller PCB Interconnect PCB Paper size sensor PCB Paper feed PCB assembly Formatter PCB Firmware DIMM I O card ONO a amp OJN ENWW Major components 363 CLJ 4600 major components lll o RA L WY N Figure 5 17 CLJ 4600 assembly location diagram Reference CLJ 4600 Component Reference CLJ 4600 Component 1 Fuser drive assembly 9 Paper pickup assembly Drum drive assy blk 10 ETB assembly Drum drive assy c m 11 Fuser assembly Drum drive assy y Drum drive assy c m Disengaging drive assy Paper pickup drive assy ooN IoIAIA OJIN Cassette 364 Chapter 5 Illustrations ENWW Figure 5 18 CLJ 4600 location of switches Reference CLJ 4600 Component swt cassette paper size detection switch SW2 cassette paper size detection switch SW3 cassette paper size detection switch SW4 door switch shown in the photo below SW5 on off switch SW1001 test print switch ENWW Major components 365 Figure 5 19 CLJ 4600 location of sensors sL2 sN a Figure 5 20 C
70. near the fuser Check for supported media and media type settings on the control panel Remove the fuser and check the exit sensor for correct movement and functionality Check the fuser rollers for damage and contamination Check the post fuser paper path for any obstruction Reseat the fuser Check the seating of the duplexer fuser and fuser access door Check the face down and duplexer diverters for correct functionality Check the fuser and duplexer area feed roller driver trains ENWW Jams 311 Table 3 8 CLJ 9500 jam messages Message Solution Remove the duplexer and check for residual media Check the seating of the duplexer fuser and fuser access door Check the face down and duplexer diverters for correct functionality Check the fuser and duplexer area feed roller driver trains Remove the duplexer Check the inside of the duplexer and the duplexer cavity for residual media Check the duplex delivery sensor for correct movement and functionality Check the registration guides for correct movement Check the feed rollers and drive gear trains for damage N oa A o Remove the duplexer Check the inside of the duplexer and the duplexer cavity for residual media Check the duplex delivery sensor for correct movement and functionality Check the registration guides for correct movement Check the feed rollers and drive gear trains for
71. on If the voltage is not 24 V replace the main relay PCA 6 If the error persists replace the controller board ENWW Troubleshooting by using control panel messages 175 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 continued 7 Measure the voltage across connector J641 1 24 VB and J641 4 GND on the main relay PCA after the printer is turned on If the voltage is not 24 V replace the main relay PCA 8 Check the ac power supply 9 Ifthe problem is not corrected after the printer is turned off and on again find the cause of activation of the overcurrent overvoltage detection circuit in the power supply Wait more than two minutes before turning the printer on again CLJ 3500 3700 A printer fan error has occurred as a result of a faulty fan connection fan or DC controller 1 Turn the printer off and then on again 2 Reseat the DC controller PCB connector J1024 3 Replace the fan 4 Replace the DC controller PCB 176 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action A printer fan error has Turn the printer off and then occurred on 57 3 Cartridge fan F2 X Description Reconnect the connector CLJ 4600 ee fan vertical fan J1004 on the DC 4 formatter fan horizontal controler PGB fan F
72. output bin by lifting and pulling the right side of the door while pressing the tab with the ridges on the left side of the door 6 Place your thumbs on the blue ridges near the warning label and using your fingers pull up on the blue latches 7 Pull the fuser out of the printer 8 On the fuser squeeze and lift the black tabs to open the shutter door CAUTION Do not open the shutter door while the fuser is in the printer 9 Remove any jammed media 10 Hold the fuser with your thumbs on the blue ridges and your fingers on the blue latches Push both sides of the fuser into the printer 11 Press the black ridges on the front of the fuser until the fuser clicks into place 12To reattach the lower rear door rear output bin hold the door at a 45 angle and fit the peg into the round hole on the right side 13Press the ridges on the tab on the left side of the door and fit the peg into the round hole 14Close the lower rear door rear output bin Turn the printer on 298 Chapter 3 Jams ENWW CLJ 3500 3700 jam inside the lower rear door rear output bin 1 Open the front door CAUTION Do not place anything on the transfer unit Do not touch the top of the transfer unit or the contacts on the left side of the transfer unit 2 Remove the magenta and yellow print cartridges If necessary turn the green roller wheel toward the rear of the printer to advance the media Remove any media Note If the media tears
73. perform an NVRAM initialization CLJ 3500 CLJ 3700 CLJ 9500 5 For 68 1 errors use the HP Web Jetadmin software to delete files from the disk drive 6 If a68 1 error persists reinitialize the hard disk 214 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 3500 3700 One or more printer settings saved in the nonvolatile storage device are invalid and has been reset to its factory default Press to clear the message Printing can continue but there could be unexpected behavior X Description 0 for onboard NVRAM 1 for removable flash disk 1 1 Press to continue 2 Turn the printer off and then on again 3 Check the printer settings to determine which settings have been changed CLJ 9500 A temporary printer error occurred 00 duplex D roller is not detected at the home position 01 duplex slide adjustment failure h Turn the printer off reseat the duplexer and then turn the printer on again to clear the error 2 Remove the duplexer and check for correct seating residual media or obstructions 3 Check the inside of the duplexer and the duplex capacity for residual media or obstructions 4 Check the duplexer side registration guides for correct functionality Replace the duplexer if necessary 5 Check the feed rollers and drive
74. point to Accessories and then click Command Prompt Change the drive and the directory to indicate where the firmware file is located Use one of the following procedures Fora parallel connected printer Type copy b filename port name where filename is the firmware file name and port name is the name of the port such as LPT1 For a shared printer Type copy b filename port name computername sharename where filename is the firmware file name and port name is the name of the port such as LPT1 The message appears on the control panel 12 Chapter 1 Control panel ENWW Using FTP 1 2 Connect the printer to the network Verify that the product is configured with an IP address you might need to configure the I O device TCP IP DHCP Print a configuration page The EIO HP Jetdirect page contains the IP Address and the Host Name Open up a Command Prompt MS DOS prompt window by using one of the following procedures Click Start point to Programs and then click Command Prompt Click Start point to Programs point to Accessories and then click Command Prompt In the command prompt window change to the drive by typing C 6 Type the directory in which the RFU file resides cd c folder name in which the rfu resides 7 At the C gt type the FTP IP address for example C gt ftp 12 34 56 78 8 Press ENTER if prompted for a user name and then press ENTER again if 9
75. possible settings consist of 6 through 6 7 Determine the color adjustment numbers for each color in the color ramps 8 Examine the color adjust page from a distance of 6 feet approximately 2 m Find the circle of each color that most closely matches the background color It might be necessary to squint slightly to match the colors Record the number in the circle ENWW Image quality 335 Table 4 4 Adjusting color calibration continued Product CLJ 8500 CLJ 8550 continued Instructions 9 Press GO and VALUE at the same time appears on the display 10 Press ITEM until the option you want appears on the display 11 Press VALUE until the number recorded earlier appears on the display 12 Press SELECT to enter the number into the product memory An asterisk appears to the right of the selection 13 Repeat steps above to adjust the color screens as necessary Reprint the color adjust page 14 Examine the new color adjust test page and verify that the color adjustment is correct e Verify that each of the color ramps black cyan magenta and yellow matches the background for each color and has a red arrow next to the circle If another circle matches the background more closely return to step 4 to reset the values at the control panel to the number shown in that circle e Verify that the circles in the neutral axis areas of the color adjust test page are neutral gray gray without a color tin
76. product CLJ 4600 Table 5 4 Basic operation sequence CLJ 4600 Period Purpose Remark WAIT From the time the To clear a potential on During this period the printer wait power switch is the drum surface and to checks the toner level and period turned on until the j clean the ETB detects whether the cartridges ETB cleaning is are present completed The printer also executes the pulse width modulation adjustment color registration adjustment and image density calibration control as required STBY From the end of the To keep the printer When the formatter sends a standby WAIT or LSTR ready to print sleep command the printer period period or last enters PowerSave mode rotation until the formatter inputs a print command or until the power is turned off INTR From immediately To stabilize the initial after the formatter photosensitive drum s rotations inputs a print sensitivity in period command until the preparation for a print TOP signal is sent to operation the formatter PRINT From the end of the To form an image on After the power is turned on print INTR period until the the photosensitive drum the cartridge is cleaned every period leading edge according to the video 35 pages and the ETB is detection sensor signal input from the cleaned every 100 pages detects paper and formatter and to then turns off the transfer the toner image transfer positive to the pape
77. signal is triggered Printing behavior is determined by the TONER LOW control panel setting See the service manual for information about the TONER LOW setting _ Turn the printer off and on to reset the printer 2 Reconnect connector J209 and reconnect relay connectors J47 and J48 on the controller board 3 Replace the drum kit 74 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 4500 0 r CLJ 4550 Approximately 80 percent of the drum life has been consumed Continue printing and order the drum kit Drum replacement will be required in the near future CLJ 8500 8550 The imaging drum is almost past its specified life Printing can continue however print quality might be degraded Although printing can continue the drum kit should be replaced for optimum printer operation CLJ 4500 4550 The imaging drum has reached the end of its expected life Replace the drum kit CLJ 8500 8550 ENWW The imaging drum is past its specified life or the waste toner container in the imaging drum is full Printing cannot continue until the drum kit has been replaced ak Replace the drum kit 2 Remove the drum cartridge from the printer and clean the waste toner sensor window with a dry cloth Reconnect connector J221 on the
78. sure that tray 4 is listed in the paper handling options section e run apaper path test from tray 4 if the test is successful the paper size detection switches might have failed or an incorrect size might be specified in the software program e make sure that the custom size switch setting is correct ENWW Troubleshooting tray 4 CLJ 9500 285 286 Chapter 2 Service and troubleshooting ENWW 3 Jams Contents General paper path checklist n anana 0000 cece eee 288 Paper path troubleshooting 0000 cee eee eee aes 289 Paper palhtest eer garanie keh eS dana coe ee Pes 289 Jam Siiran ea isang ged Ae eo noel Ag AR estoy Be bane teas ad 293 CLI 2500 AMS ss cet naate eee ated ee tee ne aT neds tes 293 CLJ 3500 3700 jam locations 2 2 00 0 cee eee 296 CLJ 4500 4550 jam locations 0000 0c eee 300 CLJ 4600 5500 jam locations 0 0 0 cee eee 302 CLJ 8500 8550 jam locations 0000 0c eee eee 305 Persistent jam troubleshooting 0 00 eee eee ee eee 314 CLI 25002 EEE E TE S EEE ee 314 CLJ S500700 raan bea w awe ane A AEA 314 CLUJ 4500 4550 erara eee teens 314 CLJ 4600 5500 nnana eee 314 CLJ8500 8550 os aie fi ee ea va Bi ee Dine 323 ENWW 287 General paper path checklist Verify that media is correctly loaded in the input trays and that all length and width guides are set correctly Clean the printer Debris in the paper path such as toner and paper du
79. than the other ovals the color density does not need to be adjusted If an oval left of center or right of center matches the background more than the center oval proceed to step 2 Press ITEM until rY appears Press the right side of the VALUE key to increase the value or press the left side to decrease it until the number corresponding to the oval that most closely matches the background pattern appears Press SELECT to save the value An asterisk appears next to the selected setting 4 Repeat step 1 Adjust gray balance 1 Adjusting densities using the gray balance pattern allows you to fine tune color balance This process affects all four color bars Examine the gray balance circles in the box at the bottom of the color balance calibration page If the circle in the center most closely matches the background pattern then the gray balance does not need to be adjusted If the circle does not match proceed to step 2 Locate the gray circle that most closely matches the background The magenta M and yellow Y numbers associated with this circle indicate the optimum gray balance settings for these colors Adjust the magenta and yellow settings yellow is horizontal and magenta is vertical until the gray circle is in the middle Use the values from the bars above to select the value to be entered After making adjustments to the magenta and yellow settings press GO to return the product to the state
80. the printer off and then on 3 If the message persists or with remove and reinstall the flash DIMM 4 If the message persists replace the flash DIMM The requested operation 1 Printing can continue could not be performed You might have attempted an 2 Turn the printer off and then on alternates with illegal operation such as trying to download a file toa 3 If the message nonexistent directory reappears a problem might exist with the software program or with The flash disk or file system 1 Use HP Web Jetadmin has reached maximum software to delete files capacity from the flash memory alternates with and try again 2 Use HP Web Jetadmin to download or delete files i and fonts see the or with download utility help for more information 3 Using the control panel or with delete stored jobs that are i not needed 4 To remove this message from the display turn the printer off and then on 78 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action alternates with or with or with The file system device is protected and no new files can be written to it 1 To enable writing to the flash memory turn off the write protection by using HP Web Jetadmin 2 To remove this message from the display turn the printer off and then on
81. the formatter Print a configuration page to make sure that the formatter has the latest firmware image If it does not perform a flash upgrade Check the connectors on the FFC between the formatter cage and the DC controller PCA Replace the DC controller PCA see the service manual for details Replace the formatter see the service manual for details 168 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 The printer detected that the fan an exhaust fan located in the upper left rear corner of the printer is not rotating This fan operates off 24 Vdc and is controlled by the DC controller PCB microprocessor 1 Turn the printer off and on to reset the printer Visually check to see if the fan is rotating if you cannot see any rotation place your hand over the outlet vents to feel whether exhaust air is moving 2 Remove the printer s left side cover Check to see if anything is preventing the fan from rotating freely 3 Verify that the fan s connector is firmly seated into connector J208 of the developing PCB 4 Ifthe error persists replace the fan ENWW Troubleshooting by using control panel messages 169 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 Fan 1 FM1 has f
82. the fuser Face down delivery roller is defective Replace the fuser DC controller PCB is defective Replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Persistent jam troubleshooting 321 CLJ 4600 5500 jams in the duplex path Table 3 14 Causes for jams in the duplex path CLJ 4600 5500 Issue Solution Oblique rollers are worn or Replace the oblique rollers damaged Oblique roller drive gears are worn Replace the ETB unit Calibrate the printer after or damaged replacing the ETB Duplex feed guide is damaged Replace the ETB unit Calibrate the printer after replacing the ETB 322 Chapter 3 Jams ENWW CLJ 8500 8550 Use this checklist to identify and resolve transfer wrap Jams TWJ Make sure to educate the customer about why such jams occur and how to prevent them in the future You cannot resolve transfer wrap jams by replacing any hardware on the printer Extensive testing and analysis has pointed out these observations e Transfer wrap jams occur when the leading edge of the paper does not properly fall away from the Intermediate Transfer Drum ITD Paper with high moisture content will jam in some printers Paper with a rough edge is more susceptible to this type of jam e The number one cause of TW is print media with moisture content beyond appropriate specification 4 to 6 by weight If the media has too much
83. the motor Y J602 on the P driver PCA and J3090 on the motor 10 Check the process cartridge drive assembly encoders and motors for correct functionality 11 Replace the process cartridge drive assembly see the service manual for details 12 Replace the DC controller PCA see the service manual for details Registration motor error 1 Turn the printer off and then turn the printer on again to clear the error 2 Check the registration assembly for damage or jammed media 3 Check the gear train on the registration drive assembly for correct functionality ENWW Troubleshooting by using control panel messages 201 Table 2 14 Numerical error messages continued Message Description Action Sa a PR IMT 4 Use the hardware alternates with diagnostic tools from the control panel to test each motor for correct CLJ 9500 functionality continued 5 Check connector J3036 on the registration motor and connector J117 on the DC controller PCA 6 Use the hardware diagnostic tools from the control panel to test each motor for correct functionality 7 Check connector J3036 on the registration motor and connector J117 on the DC controller PCA 8 Replace the registration motor see the service manual for details 9 Replace the DC controller PCA see the service manual for details ITB motor error 1 Turn the printer off and then turn the printer on again to clear t
84. the printer off and on to reset the printer 3 If the error persists replace the C link cables 4 Ifthe error persists replace the multi bin mailbox controller board PCA ENWW Troubleshooting by using control panel messages 211 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 Indicates that an electronic controller error exists X Description 1 controller board error 2 controller board IC malfunction 3 internal communication malfunction 1 Turn the printer off and on to reset the printer 2 Ifthe error persists replace the controller board CLJ 4500 4550 One or more settings saved in the nonvolatile storage device are invalid Some settings might have been reset to factory defaults l Check the printer settings to determine which values have been changed 2 Clear the message by pressing Go CLJ 8500 8550 One or more settings saved in the nonvolatile storage device are invalid Some settings might have been reset to factory defaults 1 Check the printer control panel settings One or more fields have been reset to their factory defaults during the error recovery 2 Perform a factory defaults reset see the service manual 3 Perform a cold reset see the service manual CLJ 4500 4550 A nonvolatile storage device is full Some settings might have been reset to factory defaul
85. toner sensor unit at the printer side by using a dry cloth Check the light guide and clean it if necessary Replace the light guide if the ends are scarred Reconnect the waste toner sensor unit connector and the DC controller PCB connector J1009 correctly If the error persists replace the waste toner sensor PS13 150 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 54 6 PRINTER E The OHT sensor has 1 Remove the ITB and CLJ 4500 4550 reported an error condition verify that the OHT sensor This can be caused by prism is in place contamination in the Lift the registration flap connectors a blocked and verify that the OHT sensor or a defective sensor is not blocked sensor 3 Remove the ITB drawer and inspect the drawer connectors for contamination such as a piece of media 4 Ifthe error persists verify that all connectors are firmly seated 5 If the error persists replace the sensor 6 Ifthe error persists replace the ITB drawer ENWW Troubleshooting by using control panel messages 151 Table 2 14 Numerical error messages continued Message Description Action CLJ 4600 CLJ 5500 X Description 1 temperature 2 carousel rotation error 3 Admix density sensor 5 CPR sensor 6 OHT sensor 7 yellow drum phase sensor 8 magenta drum phase sensor
86. with Ability to Continue messages CLJ 2500 44 CLJ 2500 locating 2 CLJ 2500 messages 40 CLJ 2500 status 39 CLJ 3500 3700 locating 3 CLJ 4500 4550 locating 4 CLJ 4600 5500 locating 5 CLJ 8500 8550 locating 6 CLJ 9500 locating 7 service error messages CLJ 2500 50 B Bad Transmission error 45 beam detect errors 50 115 132 belt transfer 101 bins errors 168 full 77 106 jams 63 top sensor errors 102 Black print cartridge light CLJ 2500 2 buffer errors 45 52 207 buttons CLJ 2500 2 CLJ 3500 3700 3 CLJ 4500 4550 4 CLJ 4600 5500 5 CLJ 8500 8550 6 CLJ 9500 7 engine test 269 ENWW C cables troubleshooting 25 45 calibration CLJ 4600 5500 263 color 333 Cancel Job button CLJ 2500 locating 2 CLJ 2500 using 40 CLJ 4500 4550 locating 4 CLJ 4600 5500 locating 5 CLJ 8500 8550 locating 6 CLJ 9500 locating 7 carousel developer test CLJ 4500 4550 274 errors 144 146 Rotate button CLJ 2500 2 41 cartridges carousel errors 144 146 developer test CLJ 4500 4550 274 error messages 110 111 life expectancies 328 lock toner lever message 95 non HP 96 replacing customer responsibilities 17 status lights CLJ 2500 2 status page printing 37 toner out message 105 troubleshooting 82 checklist pre troubleshooting 18 checks See tests circuit capacity specifications 28 cleaning page printing 326 Index 399 CLJ 2500 accessory error messages 47 assemblies illustrations 346 Attention
87. with Ability to Continue messages 44 control panel lights and buttons 2 jams clearing 293 language selection not supported 8 lights status 39 motors and fans 348 paper path test 289 PCAs 349 power on sequences 386 sensors and switches 347 service error messages 50 Service menu 252 service mode accessing 248 CLJ 3500 3700 assemblies illustrations 350 clutches 354 color calibration 333 fans 355 jams clearing 296 language setting 8 motors 355 PCBs 356 power on sequences 387 sensors 353 Service menu 253 service mode accessing 249 solenoids 354 switches 352 CLJ 4500 4550 assemblies illustrations 357 clutches 361 color calibration 333 control panel lights and buttons 3 4 diagnostics mode 270 drum test 330 jams clearing 300 language setting 8 motors and fans 362 paper path test 290 PCBs 363 registration setting 267 sensors 359 Service menu 254 service mode accessing 250 solenoids 361 400 Index CLJ 4600 assemblies illustrations 364 calibration 263 color calibration 335 control panel lights and buttons 5 jams clearing 302 jams troubleshooting persistent 314 language setting 9 paper path test 290 PCBs 367 power on sequences 389 sensors 366 Service menu 255 service mode accessing 250 solenoids 366 switches 365 CLJ 5500 assemblies illustrations 368 calibration 263 clutches 371 color calibration 335 control panel lights and buttons 5 jams clea
88. 006 and J2005 of the No Connect the connectors driver PCB duplexing driver PCB connected securely securely Horizontal Replace the horizontal registration Yes Replace the sensor registration guide home position sensor PS25 Is guide the problem corrected home position sensor PS25 228 Chapter 2 Service and troubleshooting ENWW Table 2 26 Cause and solutions for E055 error CLJ 8550mfp Horizontal motor M7 Duplexing driver PCB Replace the horizontal registration motor Is the problem corrected Yes Replace the horizontal registration motor M7 No Replace the duplexing driver PCB E066 CLJ 8550mfp During image stabilization control the dc controller PCB cannot detect the temperature sensor signal TMPSNS or the humidity sensor signal HUMSNS Table 2 27 Cause and solutions for E066 error CLJ 8550mfp Cause Issue Solution Connector Are connectors J801 on the No Connect the connectors temperature temperature and humidity sensor and securely and humidity Connector J206 on the de controller sensor PCB connected securely temperature Replace the temperature and humidity Yes End and humidity sensor Is the problem corrected No Replace the dc controller sensor PCB E100 CLJ 8550mfp The laser of the scanner unit is faulty This error occurs when the dc controller PCB detects DBERR for 2 5 seconds or longer after the scanner mo
89. 0n 5500dn 5500dtn 5500htn hp color LaserJet 8500 8500n 8500dn hp color LaserJet 8550 8550n 8550dn 8550gn 8550mfp hp color LaserJet 9500n 9500hdn 2004 Hewlett Packard Development Company L P www hp com 5851 1893
90. 1 2 Immediately after starting the print operation measure the voltage between pins 1 and 3 on the J1004 connector If the voltage changes from 0 V to12 V or 24 V replace the cartridge fan 3 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller 57 4 Formatter fan F1 1 Reconnect the connector J1003 on the DC controller PCB 2 Immediately after turning the printer on measure the voltage between pins 1 and 3 on the J1004 connector If the voltage changes from 0 V to 24 V replace the formatter fan 3 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Troubleshooting by using control panel messages 177 Table 2 14 Numerical error messages continued Message Description Action CLJ 5500 X Description 3 cartridge fan vertical fan FM3 4 formatter fan horizontal fan FM2 7 power supply fan FM1 Turn the printer off and then on 57 3 Cartridge fan FM3 1 Reconnect the connectors J10 for the cartridge fan and J1102 on the DC controller PCB 2 Immediately after starting the print operation measure the voltage between pins 1 and 3 on the J10 connector If the voltage changes from 0 V to 12 V or 24 V replace the cartridge fan 3 Ifthe error persists replace the DC controller PCB Calibrate the printer after replacing the
91. 1 Press the ITEM key until you see control panel display T on the 2 Pross the SELECT key to activate the test While the test is running you see E 4 on the control panel display The test takes approximately 15 seconds to run The following components function during the paper path test the fusing motor M1 paper path motor M2 and associated gears and assemblies The paper pick roller for tray 2 can be activated by manually activating the paper pick solenoid SL2 This test will not pick paper and move it through the paper path To test this function simply run a Configuration page For multiple pages select Continuous Configuration page on the control panel display The paper path test allows the service technician to verify the operation of components within the paper path When the test is initiated both the M1 and M2 are activated You will see the ITB lift cams rotate once and the ITB drive gear turn briefly The remaining portion of the test simply allows both the M1and M2 to run and to move the gears and rollers that are associated with them Note If an error occurs during the paper path test the message F ED appears CLJ 4600 5500 paper path test This diagnostic test generates one or more test pages that you can use to isolate the cause of jams To isolate a problem you can specify which input tray to use specify whether to use the duplex path and specify the number of copies to print Multiple co
92. 1 Remove any HP Jetdirect or on successfully blank other EIO cards and then try to continued turn the printer on again 2 Check the fuse s in the power supply and replace the power supply if necessary 3 Verify that the DC controller is functioning and replace if necessary CLJ 2500 only Verify that the control panel cable is Control panel lights seated in both the control panel and do not cycle the formatter If the cable is connected correctly replace the control panel Verify that the DIMMs are seated correctly in the DIMM slots CLJ 4500 only The 1 Verify that the ribbon cable is front panel display is seated in both the formatter and dark and an error the DC controller Message or eats te Replace the interconnect PCB CLJ 9500 only Fan The fan operation is important operation is incor because all of the fans are con rect trolled by the DC controller PCA Fans 1 through 6 operate at full speed for 30 seconds during the WAIT period Fans 1 through 5 slow to half speed and fan 6 stops dur ing the STBY period and when the printer is in PowerSave mode Make sure that the printer is not in Power Save mode ENWW Basic troubleshooting 23 Table 2 1 Basic troubleshooting Verification steps Possible Solutions problems 2 Is the printer ready Control panel lights Consult the lists of control panel The printer should other than the Ready light messages to identify and function with
93. 13 Alphabetical printer messages continued Message Description Action CLJ 8500 8550 An EIO card error exists but printing can continue The configuration page will indicate that EIO lt n gt is not supported lt n gt EIO slot number 1 Bottom EIO slot 2 Top EIO slot 1 Turn the printer off and on to reset the printer 2 Replace the offending EIO accessory alternates with The EIO device in slot X is initializing The YYY value increments every 10 seconds during this process No action is required CLJ 4500 4550 The EIO slot specified does not have a card installed or is not functional No action is required The printer is running an internal test to verify operation When the printer is finished the printer returns to the ready state but remains offline Press Go to bring the printer online The top output bin on the multi bin mailbox is full 1 Remove all media from the top output bin in the multi bin mailbox to continue printing 2 Check the functionality of the Bin Full flag ENWW Troubleshooting by using control panel messages 77 Table 2 13 Alphabetical printer messages continued Message Description Action A device failure has occurred 1 Printing can continue for on the specified drive jobs that do not require the flash DIMM alternates with 2 To remove this message from the display turn
94. 2 64 Tray 4 light pattern interpretation Long Short Error number Recommended action 1 sec 0 03 sec meaning 3 1 66 11 01 Lift the tray by hand to make sure that it Lifter malfunction lifts freely Make sure that the paper size plates are installed correctly in the same corresponding slots and are not bent If neither of these is the problem replace tray 4 2 1 13 11 11 The media does not reach the sensor Registration sensor Open the door and remove the media delay jam Replace the paper pickup assembly 2 2 13 11 3B Open the door and remove the media Registration sensor Check the sensors and replace the station jam initial jam corresponding FRU 2 3 13 11 31 The media did not reach the sensor Jam sensor delay Open the door and remove the media jam Replace the paper pickup assembly 2 4 13 11 21 Open the door and remove the media 13 11 2B Jam sensor stationary jam initial jam 1 1 Paper path door is Close the door open 1 2 Media tray is open Close the tray Wrong size media is Load the correct size of media or check loaded the sensors 1 3 No media in the tray Load media or check the sensors Note If the LED does not come on replace the paper deck PCA or the universal power supply assembly 284 Chapter 2 Service and troubleshooting ENWW Tray 4 does not print media e make sure that power is supplied to tray 4 e print a configuration page and make
95. 2 Turn the printer off and reseat the formatter Print a configuration page to make sure that the formatter has the latest firmware image If it does not perform a flash upgrade Check the connectors on the FFC between the formatter cage and the DC controller PCA Replace the DC controller PCA see the service manual for details Replace the formatter see the service manual for details CLJ 8500 8550 An input feed error such as requesting to feed transparencies through the duplexer has occurred or the input tray is not installed N If the input tray you are trying to print from is not installed install the input tray Turn the printer off and on to reset the printer ENWW Troubleshooting by using control panel messages 167 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 An illegal output error has occurred For example the multi bin mailbox is not installed and it was selected as the output destination or transparencies are present in the duplexer 1 Open the printer and remove media from the paper path 2 Verify that the media type is set in the printer control panel Turn the printer off and on to reset the printer A temporary printer error occurred Turn the printer off and then turn the printer on again to clear the error Turn the printer off and reseat
96. 3001 and connector J120 on the DC controller PCA 5 Check the media detection flag for damage or obstructed movement 6 Adjust or replace the paper pickup unit if necessary 7 Replace the DC controller PCA see the service manual for details CLJ 3500 3700 The specified tray is open or is empty If the tray is not open and is not empty then the tray sensor sensor connections or the DC controller PCB might require replacement 1 See the service manual for specific troubleshooting and replacement information The waste toner full sensor PS13 detects a waste toner full condition A light receiver and light pipe arrangement along with a window in the drum assembly look for a waste fill condition Verify that the sensors and light pipes are not blocked 1 Replace the drum kit 2 Check the sensor and replace it if it is defective 108 Chapter 2 Service and troubleshooting ENWW Numerical error messages The following table contains the numerical error messages for all of the printer models that are covered in this guide Because different models require different procedures make sure that you find the exact combination of numbers and words that appears in the error message on the control panel display Note For error messages pertaining to the CLJ 8500mfp see Numbered error codes for the CLJ 8550mfp on page 218 ENWW Troubleshooting by using control pane
97. 334 Chapter 4 Print quality ENWW Table 4 4 Adjusting color calibration continued Product Instructions CLJ 4600 1 Press SELECT to enter the CLJ 5500 2 Press Down ARROW to highlight 3 Press SELECT to select 4 Press DOWN ARROW to highlight 5 Press SELECT to selec 6 Press DOWN ARROW or UP ARROW to highlight 7 Press DOWN ARROW or UP ARROW to highlight the desired color 8 Press DOWN ARROW or UP ARROW to highlight the correct density setting 9 Press SELECT to select the density setting 10 Press RIGHT or LEFT ARROW to set the density for the next color 11 After setting the density for each color press PAUSE RESUME CLJ 8500 Do not perform the color balance adjustment procedure until all of the CLJ 8550 _ following troubleshooting methods have been completed e Experiment with the printer driver and software settings to adjust the color output e Clean the density sensor e Complete the troubleshooting solutions listed in the service manual Print the color adjust page 1 Press GO and VALUE at the same time appears on the product control panel display 2 Press ITEM until FF appears on the display 3 Press SELECT to print the color adjust page 4 Press GO to exit the Color Adjust Menu 5 Note the numbers beside the red arrows for later reference 6 The color adjust page indicates the last set of saved color settings with a red arrow next to the saved setting The default for each color is 0 other
98. 3500 3700 A printer motor error has occurred X and Y are detailed below X Description 5 Primary transfer roller engaging motor M5 startup error 6 Primary transfer roller engaging motor M5 rotation error 7 Developer motor M4 startup error 8 Developer motor M4 rotation error 9 Drum motor M3 startup error 9 when Y is also 9 Secondary transfer engaging mechanism error A Drum motor M3 rotation error C Delivery motor M2 rotation error Y Description 0 No color K Black C Cyan M Magenta Y Yellow Turn the printer off and then on again For the following errors perform the indicated action 59 7Y and 59 8Y Error on control panel Error occurred when the developing motor started or while the developing motor was rotating For all the following errors perform the actions listed below 59 5Y and 59 6Y Error on control panel 59 05 00 and 59 06 00 Error on Event log only An error occurred when the primary transfer roller engaging motor started or while the motor is rotating 1 The connectors in the primary transfer roller engaging motor drive signal line are not connected correctly Reseat the motor connector J5005 and the DC controller PCB connector J1014 2 Faulty primary transfer roller engaging motor Replace the motor 3 Faulty DC controller PCB Replace the DC controller PCB ENWW Troubleshooting by using control
99. 4 messages CLJ 3700 FE 2 messages indicate errors similar to the Flash device errors can be either To remove the message from the display press This genuine HP supply was not designed for this printer and is not supported Print quality might be affected Replace this supply with a genuine HP supply designed for the printer in use ENWW The printer has detected that an incompatible fuser possibly the wrong voltage of fuser for the printer has been installed 1 Remove the fuser and install the fuser specified for use with this printer Printing cannot continue until the correct fuser is installed in the printer 2 Reconnect connector J222 on the controller board and connector J26 on the fuser 3 Replace the controller board Troubleshooting by using control panel messages 79 Table 2 13 Alphabetical printer messages continued Message Description Action At least one supply item is incorrectly positioned in the printer and another supply item is missing incorrectly placed out or low 1 Press SELECT and then press HELP for help 2 Follow the instructions on the display to locate and replace the incorrect supply 3 Press the UP ARROW and DowN ARROW to step through the instructions 80 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description
100. 4500 4550 254 CLJ 4600 5500 255 CLJ 8500 8550 256 CLJ 9500 257 service mode accessing 248 service notes 397 settings restoring factory default 264 size mismatch paper 104 software troubleshooting 24 solenoids CLJ 3500 3700 354 CLJ 4500 4550 361 CLJ 4600 366 CLJ 5500 371 CLJ 9500 383 specifications electrical 28 operating environment 26 status lights See lights status page supplies 37 STBY standby sequence 393 storage environment specifications 26 supplies error messages 80 imaging drum errors 74 life expectancies 328 non HP 19 replacing customer responsibilities 17 status page printing 37 support websites 398 406 Index switches CLJ 2500 347 CLJ 3500 3700 352 CLJ 4600 365 CLJ 5500 369 CLJ 9500 383 tray 4 282 T technical support 398 temperature humidity sensor errors 143 tests density 331 developer 274 diagnostics mode CLJ 4500 4550 270 door sensors CLJ 4500 4550 276 drum 275 330 engine 269 paper path 289 path sensors CLJ 4500 4550 275 toner cartridges See print cartridges toner lever unlocked error message 95 toner out message 105 top output bin full 106 sensor errors 102 transfer belt 101 transfer drum 92 transfer jams 60 64 transfer roller replacing 17 transfer unit troubleshooting 94 transfer wrap jams CLJ 8500 8550 323 tray 4 lights interpreting 284 sensors testing 283 trays CLJ 2500 error messages 42 feed errors 167 jams 60 jams tray 1 65 jams tray 4 64 registration 266
101. 5 5 mm 6 0 inches Fuser 195 mm 7 8 inches Image drum 222 mm 8 9 inches 342 Chapter 4 Print quality Transfer belt ENWW Table 4 5 Repetitive defects continued Product CLJ 9500 ENWW 71 mm 2 8 inches T2 roller 27 mm 1 06 inches K developer x1 30 mm 1 18 inches CMY developer x3 45 mm 1 77 inches Charger roller x4 52 mm 2 04 inches T1 backing roller x4 on ITB 73 mm 2 87 inches T2 backing roller on ITB 98 mm 8 86 inches OPC x4 100 mm 3 93 inches ITB driver roller 100 mm 3 93 inches Cleaning backing roller Space between T1s Fuser bottom 100 mm 3 93 inches 140 mm 5 51 inches 148 mm 5 83 inches Fuser top Repetitive defects troubleshooting 343 344 Chapter 4 Print quality ENWW 5 Illustrations Contents Major components 000 346 CLJ 2500 major components 0000 cee eeeee 346 CLJ 3003 100 dois ate Ee Veen ane oe ee a BS 350 CLJ 4500 4550 major components 0 0005 357 CLJ 4600 major components 02000e eee eee 364 CLJ 5500 major components 0000 00 e eee 368 CLJ 8500 8550 major components 0 0005 374 CLJ 9500 major components 0000 0c eee eee 380 Power On Sequences 1 eee 386 GLJ 2500 crisis sas auth Oe Rtas aod aw pe aap EASE EAEE CERF 386 ClLI3500 3700 ohne miad maw eid ey
102. 5 Cause and solutions for E217 error CLJ 8550mfp Cause Issue Solution Lamp heater Replace the lamp heater Is the Yes End reader problem corrected No Replace the reader controller controller PCB PCB 234 Chapter 2 Service and troubleshooting ENWW E218 CLJ 8550mfp The scanning lamp fluorescent lamp is absent or the inverter PCB copy module is faulty This error occurs when activation is attempted and the scanning lamp is not mounted or the lamp filament is broken Table 2 36 Cause and solutions for E218 error CLJ 8550mfp Cause Issue Solution Scanning Is the scanning lamp mounted No Mount the lamp correctly lamp correctly See note below Replace the scanning lamp Is the Yes Replace the lamp problem corrected Inverter PCB Are connectors J1002 and J1003 on No Connect the connectors the inverter PCB and connector J1602 securely on the reader controller PCB Yes Replace the inverter PCB connected securely Note If you have removed and then remounted the scanning lamp be sure to execute intensity adjustment in service mode FUNCTION gt Misc R gt USE LAMP If you have mounted a new scanning lamp be sure to execute intensity adjustment and CCD adjustment in service mode FUNCTION gt Misc R gt LAMP ADJ and FUNCTION gt CCD gt CCD ADuy respectively ENWW Troubleshooting by using control panel messages 235 E240 CLJ 8550mfp
103. 500 3700 Use a small pointed object to depress the test page switch located on the left side of the printer CLJ 4500 The engine test button is accessed through a small hole on the CLJ 4550 side of the printer Note The engine test does not print from tray 1 For the printer to perform an engine test tray 2 or tray 3 must be installed and loaded with paper and the print cartridge must be installed in the printer CLJ 4600 The engine test button is accessed through a small hole on the CLJ 5500 side of the printer CLJ 8500 8550 The CLJ 8500 8550 do not support this function CLJ 9500 The engine test button is located on the DC controller PCA You can reach it through a hole at the right rear of the printer by using a small non metallic screwdriver or long thin object ENWW Engine test 269 Diagnostics mode CLJ 4500 4550 This section provides an overview of the diagnostic tools incorporated into the HP Color LaserJet 4500 series and 4550 series printers CAUTION Use caution when performing printer diagnostics to avoid risk of injury Only trained service personnel should access the diagnostic mode with the skins removed There are two diagnostic sections built into the firmware one for the formatter and the other for the engine Each section contains different tests that allow the service technician to verify printer functionality While in diagnostic mode there are no error messages associated with these tes
104. 500 8550 major assembly locations 1 of 2 374 Chapter 5 Illustrations ENWW Drum cartridge drive assembly Solenoid assembly Delivery frame assembly Fuser assembly Black toner cartridge Imaging drum Color toner cartridge Figure 5 29 CLJ 8500 8550 major assembly locations 2 of 2 Major components 375 ENWW Figure 5 30 CLJ 8500 8550 printer sensors paper full sensor Reference CLJ 8500 855 Reference CLJ 8500 8550 component component PS1 Registration roller paper PS1206 Tray 2 paper level sensor 1 sensor PS3 Carousel position sensor PS1207 Tray 3 paper out sensor PS5 Separation sensor PS1208 Tray 2 paper out sensor PS10 Top face down output bin PS1301 Tray 1 paper sensor 376 Chapter 5 Illustrations ENWW Reference CLJ 8500 855 Reference CLJ 8500 8550 component component PS11 Top face down output bin PS1302 Lifting plate position sensor delivery sensor PS17 Pick up unit paper sensor PS1801 OHT sensor 1 PS18 Pick up unit cover sensor PS1802 OHT sensor 2 PS19 Tray 1 last page sensor PS1901C Color toner cartridge sensor PS29 Tray 2 last page sensor PS1902 Color toner lever sensor PS30 Left cover sensor PS1903 Fusing delivery sensor PS1201 Tray 3 sensor THU Upper thermistor PS1202 Tray 2 sensor THL Lower thermistor PS1203 Tray 3 paper level sensor 2 TPU Upper thermo switch
105. 7 CLJ 4600 364 CLJ 5500 368 CLJ 8500 8550 374 CLJ 9500 380 configuration page information included on 31 not printing troubleshooting 18 24 printing 32 consumables See supplies control panel access denied 53 accessory error messages CLJ 2500 47 Attention with Ability to Continue messages ENWW CLJ 2500 44 CLJ 2500 lights and buttons 2 CLJ 3500 3700 lights and buttons 3 CLJ 4500 4550 lights and buttons 4 CLJ 4600 5500 lights and buttons 5 CLJ 8500 8550 lights and buttons 6 CLJ 9500 lights and buttons 7 error messages alphabetical list 53 error messages CLJ 2500 39 error messages numerical list 109 language setting 8 menu map 35 service error messages CLJ 2500 50 Service menu 252 253 257 service mode 248 troubleshooting 18 22 copy module error messages CLJ 8550mfp 218 CPR sensor 70 customer support 398 Cyan print cartridge light CLU 2500 2 D Data light CLJ 3500 3700 locating 3 CLJ 4500 4550 locating 4 CLJ 4600 5500 locating 5 CLJ 8500 8550 locating 6 CLJ 9500 locating 7 DC controller errors 166 default settings restoring 264 demonstration page printing 34 troubleshooting 24 using 33 density sensor 71 149 density test 331 developer test 274 diagnostics density test 331 developer test 274 door sensors CLJ 4500 4550 276 drum test 275 330 engine test 269 mode CLJ 4500 4550 270 paper path test 289 path sensors CLJ 4500 4550 275 DIMMs DRAM controller errors 207 errors 141 206 flash trouble
106. 8500 8550 do not support a supplies status page For information about the percentage of consumables remaining print a configuration page 1 Press SELECT to open the menus 2 Use UP or DOWN to scroll to Information Menu and then press SELECT Use UP or DOWN to scroll to Print Supplies Status and then press SELECT Press PAUSE RESUME to close the menus 38 Chapter 2 Service and troubleshooting ENWW Troubleshooting by using control panel messages This section provides a list of control panel messages for the CLJ 2500 Alphabetical error messages are listed first on page 53 followed by numerical messages on page 109 Control panel messages that are self explanatory are not included See the service manual for more detailed information CLJ 2500 control panel light messages The following section describes the meaning of the light patterns in the Printer Status area Information about the printer status also appears in the Printer Status and Alerts software and the embedded Web server Several errors have secondary light patterns which provide more information about the specific type of error that occurred The following errors types have secondary light patterns e Attention with Ability to Continue errors see page 44 e Accessory errors see page 47 e Service errors see page 50 Control panel lights Use the following legend to read the light messages in Table 2 10 Printer Status light messages f
107. 9 cyan drum phase sensor 10 black drum phase sensor 11 yellow density sensor 12 magenta density sensor 13 cyan density sensor 14 black density sensor 15 yellow CPR sensor 16 magenta CPR sensor 17 cyan CPR sensor 18 black CPR sensor 19 ETB speed control sensor 20 CPR sensor 21 yellow toner remaining sensor 22 magenta toner remaining sensor 23 cyan toner remaining sensor 24 black toner remaining sensor 25 top sensor Turn the printer off and then on and then check items in the order listed Check the indicated sensor 54 1 error Check the fuser See 50 X Fuser error 54 3 error Check the connections Replace the color registration detection assembly if necessary 54 5 error Check the connections Replace the color registration detection assembly if necessary 54 6 error Check the connections Replace the color registration detection assembly if necessary 54 7 54 8 54 9 or 54 10 error Check the connections Replace the drum phase sensor for the indicated color if necessary 54 11 54 12 54 13 or 54 14 error Check the connections Check the cartridge and replace it if necessary Replace the color registration detection assembly if necessary 54 19 error Check the ETB connection Replace the ETB if necessary Replace the DC controller if necessary 152 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Descr
108. B Replace the DC controller PCB ENWW Troubleshooting by using control panel messages 155 Table 2 14 Numerical error messages continued 54 30 XX event log only HP3700 only Halftone calibration error XX Description 06 magenta data out of range 07 yellow data out of range 08 black data out of range 09 cyan data out of range Message Description Action 54 21 CLJ 3500 3700 54 22 continued 54 23 54 24 Toner Y M C k level sensor abnormality 1 The connectors in the toner level sensor control line are not connected correctly Reseat the memory controller PCB connector J201 and the DC controller PCB connector J1025 2 Faulty memory controller PCB Replace the memory controller PCB 3 Faulty DC controller PCB Replace the DC controller PCB 54 30 XX Perform a CALIBRATE NOW in the CONFIGURE DEVICE PRINT QUALITY menu on the printer control panel 156 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 54 31 Media Sensor CLJ 3500 3700 Abnormality After continued adjustment Value Out of Spec 1 Try to calibrate the media sensor again 2 Dirty media sensor Clean the media sensor 3 The connectors in the media detection signal line are not correctly connected Reseat the media sensor connector J601 relay connector J5026 and DC
109. CL4 cleaning roller press cam and solenoid SL1 fuser transfer belt and output feed roller can be tested during the paper path test For safety reasons the fuser high voltage supplies and scanner are all turned off during testing 1 From the Service Mode menu press MENU until 2 Press ITEM unti appears 3 Press VALUE to specify the number of repetitions 1 to 10 and then press SELECT 4 Press ITEM until the input source that you want to test appears you can select more than one input source for the test 5 Press VALUE until GH or GFF appears on the display and then press SELECT 6 Press ITEM until 7 Press VALUE until T display appears on the 8 Press SELECT to select the output destination 9 Press ITEM until T appears on the display and then press SELECT to perform the paper path test Note To stop the paper path test press CANCEL JOB The transfer drum can be removed by opening the right upper door open and overriding the right cover interlock However media might not feed past the transfer area unless 11 x 17 inch or A3 sized media is used ENWW Paper path troubleshooting 291 CLJ 9500 paper path test and automatic sensors test The paper path test can be used to make sure that various paper paths are working correctly or to troubleshoot problems with tray configuration It also allows you to print a page or pages with complete control over source duplex and dest
110. DC controller See Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only on page 263 57 4 Formatter fan FM2 1 Reconnect the connectors J11 for the formatter fan and J1102 on the DC controller PCB 2 Immediately after turning the printer on measure the voltage between pins 4 and 6 on the J1102 connector If the voltage changes from 0 V to 12 V or 24 V replace the formatter fan 178 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 57 7 Power supply fan FM2 1 Reconnect the iH connectors J1104 and CLJ 5500 J1133 on the DC continued controller PCB 2 Disconnect the connector J1133 3 Immediately after turning the printer on measure the voltage between pins 1 and 3 on the J1133 connector If the voltage changes from 0 V to 12 V or 24 V replace the power supply fan 4 Ifthe error persists replace the low voltage power supply 5 Ifthe error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Troubleshooting by using control panel messages 179 Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 The printer detects that a fan motor has failed X description 1 cartridge fan FM 3 3 low voltage power supply fan FM5 5 face up delivery paper path fans
111. DC controller PCB Replace any damaged parts 2 If the error persists replace the fuser drive assembly 3 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller See Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only on page 263 Print cartridge motor error 1 Reconnect the print cartridge connector on the DC controller PCB J1124 for cyan J1126 for magenta J1125 for yellow and J1127 for black ENWW Troubleshooting by using control panel messages 193 Table 2 14 Numerical error messages continued Message Description Action 2 Ifthe error persists replace the drum drive assembly for the indicated print cartridge alternates with 3 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller See Calibrate i M Now CLJ 3500 3700 z CLJ 4600 and CLJ 5500 say CLJ 8500 only on page 263 continued Developing disengaging motor error 1 Reconnect the connectors J16 for the developing disengaging motor and J1100 for the DC controller PCB 2 If the error persists replace the developing disengaging drive assembly 3 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller 194 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued
112. LJ 4600 location of solenoids Reference CLJ 4600 Component SL1 cassette pickup solenoid paper pickup drive assembly SL2 multi purpose tray pickup solenoid paper pickup drive assembly 366 Chapter 5 Illustrations ENWW Figure 5 21 CLJ 4600 PCB locations Reference CLJ 4600 Component 1 I O daughter card 2 Firmware DIMM 3 Formatter simplex Formatter duplex DC controller PCB Memory controller PCB Memory tag antenna PCBs Low voltage power supply PCB Pickup PCB O OMDINIDO a fs Toner sensor PCB 10 High voltage power supply PCB 11 Fuser power supply PCB The formatter is available with either simplex or duplex capability Be sure to use the correct formatter for the model of printer you are servicing The HP Color LaserJet 4600 and 4600n printers do not have duplex capability ENWW Major components 367 CLJ 5500 major components gt C Gy Ga 11 ss Q a A SEY A Figure 5 22 CLJ 5500 assembly location diagram Reference CLJ 5500 component Fuser drive assembly Drum drive assembly black Drum drive assembly cyan magenta Drum drive assembly yellow z h lt paces oll eee Drum drive assembly cyan magenta Disengaging drive assembly Paper pickup drive assembly Cassette O OMDINI DO oO AJOJN Paper pickup assembly
113. Message Description Action A new cartridge or other supply has been installed that is not made by HP This message continues to appear until an HP cartridge is installed or CANCEL JOB is pressed If you believe that the supply is an HP supply call the HP fraud hotline at 1 877 219 3183 Any printer repair required as a result of using non HP supplies is not covered under HP warranty To continue printing press CANCEL JOB The first pending job will be cancelled 1 Remove and replace the indicated supply and make sure that genuine HP supplies are installed If the supplies are not HP supplies replace them with genuine HP supplies 2 Press CANCEL JOB to continue printing Note Moving a print cartridge that is reporting a low or out condition to another printer might cause the print cartridge to report as a non HP supply Additional procedures for CLJ 9500 3 Check connectors J16 J17 J18 and J19 on the print cartridge antenna units and connectors J1006 J1007 J1008 and J1009 on the T driver PCA 96 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action continued 4 Check the e label on the print cartridge and check the antenna unit Replace the print cartridge if you suspect a faulty e label 5 Replace the T driver PCA see the service manual for details 6 Re
114. Oo removing any unnecessary fonts macros or any data currently in printer memory If you continue to lose data you might need to add more printer memory For a temporary solution simplify the image 41 3 Unexpected Size error or 41 x Printer error Ao OK 1 Load the correct size of media If the correct size is loaded press GO 2 If printing does not resume open the top cover remove the imaging drum and check for a jam inside the printer 44 Chapter 2 Service and troubleshooting ENWW Table 2 11 Attention secondary messages CLJ 2500 continued 40 Bad Transmission error 1 Press GO to try to print a portion of the job 2 If the printer is connected to the network make sure that Oe the cable is securely 3 connected between the HP Jetdirect print server card and the network port 3 If the printer is directly connected to a computer the cable between the printer and computer has a bad connection or the cable is of poor quality Disconnect the cable and reconnect it Make sure that you are using a high quality USB or IEEE 1284 compliant size B parallel cable 4 Ifthe error persists replace the appropriate cable 22 Buffer Overflow error 1 Press GO to try to print a portion of the job 2 The connection between the printer and the computer Oe might be loose Turn the printer off and check the cable connection to make sure that it is secure 3 Th
115. P LaserJet Printers and MFPs manual CLJ 3500 1 Press MENU to enter the CLJ 3700 2 Press the DOWN ARROW to highlight 3 Press SELECT to select 4 Press the DOWN ARROW to highlight 5 Press SELECT to select CLJ 4500 1 Press MENU until appears on the CLJ 4550 printer control panel display Press ITEM until appears on the display Press SELECT to print the menu map Press SELECT to enter the MEHUS CLJ 4600 CLJ 5500 Press the DOWN ARROW to highlight Press the DOWN ARROW to highlight F Press SELECT to select CLJ 8500 Press MENU to cycle through the printer control panel CLJ 8550 menus From the Information Menu select FF A O N 0 N Press SELECT to print the menu map CLJ 9500 Press SELECT to open the menus N 0o N Use UP or DOWN to scroll to Information Menu and then press SELECT 3 Use UP or DOWN to scroll to Print Menu Map and then press SELECT 4 Press PAUSE RESUME to close the menus ENWW Printing information pages 35 Event log The event log lists the printer events including printer jams service errors and other printer conditions To print an event log Table 2 7 Printing an event log Product Instructions CLJ 2500 The last three events appear on the configuration page For a full list of events see the HP Color LaserJet 2500 Toolbox click the Device tab and then click Information CLJ 3500
116. PCA see the service manual for details e Inthe instance of a 10 90 YY error the image drum is reporting toner concentration to carrier is very low This error might occur when non HP supplies are used Make sure that the toner delivery system and shutters are functioning correctly ENWW Troubleshooting by using control panel messages 113 Table 2 14 Numerical error messages continued Message Description Action CLJ 3500 3700 Cartridges are not engaged poor primary transfer bias contacts exist the high voltage supply is defective or control signal errors exist 1 Open and close the front door to re engage the cartridges If the error persists reseat the cartridges 3 Check the printer primary transfer bias contacts to the transfer unit and then clean them if they are dirty If the contacts cannot be cleaned or if they are damaged then replace the transfer unit 4 Ifthe message persists replace the high voltage power supply PCB 5 If the message persists replace the DC controller PCB For more information about jam error messages see Jams on page 293 114 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 4500 CLJ 4550 CLJ 8500 8550 CLJ 9500 CLJ 4600 CLJ 5500 A connection wi
117. PCB E010 E011 CLJ 8550mfp E010 The main motor start up is faulty This error occurs when the revolution of the main motor fails to reach a specific value E011 The main motor rotation is faulty This error occurs when the revolution of the main motor fails to reach a specific value Table 2 19 Cause and solutions for E010 E011 errors CLJ 8550mfp to 0 V between connector J219 4 MON on the dc controller PCB and connector J219 5 GND when the power is turned on Cause Issue Solution Connector Are connector J219 on the dc No Connect the connectors controller PCB and the relay securely connector J1 connected securely Main motor Does the voltage change from about 5 Yes Replace the main motor No Replace the dc controller PCB E013 CLJ 8550mfp A specific number of copies have been made after the waste toner case full warning has been issued DISPLAY gt SENSOR gt W TONER Table 2 20 Cause and solutions for E013 error Cause Issue Solution Waste toner case Is the photosensitive drum cartridge full of waste toner Yes Replace the photosensitive drum cartridge No Replace the dc controller PCB 222 Chapter 2 Service and troubleshooting ENWW E019 CLJ 8550mfp At the time of power on or while the drum motor is rotating during printer operation the light receiving cell of the waste toner sensor does not detect light f
118. PJL SET SERIALNUMBER XXXXXXXX PJL SET FORMATTERNUMBER XXXX PJL SET PAGES PJL SET COLORPAGES PJL SET SERVICEMODE EXIT ESC 12345X Use the MS DOS command prompt to open the MS DOS editor window 1 Go to the Windows Start menu click Programs and then click Accessories 2 Select Command Prompt from the menu list 3 The command prompt window appears Type in EDIT no quotation marks and then press the Gum key 4 The MS DOS editor widow appears The CLJ 2500 does not have a control panel For service mode functions see the HP Embedded Web Server for HP LaserJet Printers and MFPs manual 252 Chapter 2 Service and troubleshooting ENWW Table 2 52 Service menu items continued Product Service menu items CLJ 2500 Create the escape sequence ESC in the MS DOS continued editor window 1 Press and hold down the CTRL key Press the P key and then release both keys 2 Press the Esc key The editor will insert a left pointing arrow symbol 3 Type the PUL command line next to the arrow Send the PUL command to the printer 1 Open the File menu and select Save As to save and name the PUL command file 2 Open the File menu and select Exit to return to the MS DOS prompt window 3 Type in C Copy_filename txt LPT1 no quotation marks and press the ENTER key 4 The PuL file containing the PUL command is sent to the printer CLJ 3500 3700 Clear event log Total mono pages T
119. PS1204 Tray 3 paper level sensor 1 TPL Lower thermo switch PS1205 Tray 2 paper level sensor 2 ENWW Major components 377 Figure 5 31 CLJ 8500 8550 printer motors and heaters Reference CLJ 8500 855 Reference CLJ 8500 855 component component M1 Carousel motor FM1 Fan 1 motor M2 Drum motor FM2 Fan 2 motor M3 Cartridge motor FM3 Fan 3 motor M4 Main motor HU Upper fuser heater M5 Pick up motor HL Lower fuser heater 378 Chapter 5 Illustrations ENWW Figure 5 32 CLJ 8500 8550 PCA assemblies Reference CLJ 8500 855 component 1 PCA cassette size sensing 2 PCA main relay 3 PCA controller board PCA controller board for HP CLJ 8550 MFP 4 PCA carousel motor M1 5 PCA subrelay 6 PCA tray 1 7 PCA ECO 2 assembly HP CLJ 8550 MPF Interface PCB assembly HP CLJ 8550 MPF Interface cable HP CLJ 8550 MPF IOT cable HP CLJ 8550 MPF ECO 2 cable HP CLJ 8550 MPF ENWW Major components 379 CLJ 9500 major components Figure 5 33 CLJ 9500 major components 380 Chapter 5 Illustrations ENWW Reference CLJ 9500 components 1 Face down tray delivery sensor flag 2 Face down tray paper full sensor flag 3 T cartridges T CRG print cartridges 4 Laser scanner assemblies 5 P cartridges P CRG
120. Perform the sensor monitor test in the Service Mode Menu to verify that all paper path sensors are functioning correctly or to locate the jam The printer senses a jam in the transfer drum area when media has not reached PS5 In some cases the media might wrap around the transfer drum and become lodged near the imaging drum Open the right upper door remove the transfer drum remove the jammed media reinstall the transfer drum and close the right upper door The printer senses a jam in tray 4 Open tray 4 and the vertical transfer unit VTU remove the jammed media and close the tray and the VTU Note Most transfer jams for the CLJ 8500 8550 are related to media or environment 64 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The printer senses a jam in tray 1 or the media is longer than what was expected lt type gt Media type specified in the printer driver or program lt size gt Media size specified in the printer driver or program The lt type gt and lt size gt can be the default media type and size if an automatic paper override has occurred or if GO was pressed during a mount request 1 Open the right upper door and remove the jammed media 2 Load the media type and size indicated on the printer control panel The printer is attempting to
121. Service menu is PIN protected for added CLJ 5500 security When you select from the list of menus you are prompted to enter your 8 digit PIN number The PIN for this printer is 04550002 1 Press UP ARROW or DOWN ARROW until the first digit of the PIN is displayed 2 Press SELECT to save the digit The display replaces the digit with an asterisk 3 Repeat steps 1 and 2 until all eight digits are entered 4 Press RIGHT or LEFT ARROW at any time to move to the previous digit 250 Chapter 2 Service and troubleshooting ENWW Table 2 51 Gaining access to the service mode Product Instructions CLJ 8500 1 From y state press MENU until CLJ 8550 appears 2 Press TEM the left side of the key and VALUE simultaneously CLJ 9500 1 Fromat or tH state press A or V to cycle through the control panel menus until appears on the display 2 Press v ENWW Service mode functions 251 Service menu items Table 2 52 Service menu items Product Service menu items CLJ 2500 The CLJ 2500 does not have a control panel display Use PJL commands to set or modify service mode information The X and entries in the PUL command list below are placeholders Replace them with the correct serial and formatter information and page counts Page count information is found on the printer configuration page ESC 12345X PJL SET SERVICEMODE HPBOISEID
122. abel indicator for damage Replace the print cartridge or the image drum if necessary 5 For print cartridges check the following connectors connectors J16 J17 J18 and J19 on the antenna PCAs connectors J1001 J1006 J1007 J1008 and J1009 on the memory controller PCA connector J802 on the T driver PCA 112 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 continued If multiple supplies have this error a iy error is displayed for the first supply detected with the error When the error corresponding to the first FEA is resolved another error is displayed for the next supply This continues for all of the supplies errors Note The consumables gauge and supplies status menu are always updated to indicate all supplies with a supplies memory error even though the message refers to a single supply Note 00 memory data error might be caused when using non HP supplies 6 For image drums check the following connectors connectors J12 J13 J14 and J15 on the antenna PCAs connectors J1001 J1002 J1003 J1004 and J1005 on the memory controller PCA connector J802 on the T driver PCA 7 Replace the antenna PCA for the indicated cartridge or drum 8 Replace the T driver PCA see the service manual for details 9 Replace the DC controller
123. ach element in a document For more information see the printer driver online Help Note Automatic is the default setting and is recommended for printing all color documents Use the Manual color adjustment option to adjust the neutral gray color treatment halftones and edge enhancements for text graphics and photographs To use the Manual color options on the select f i and then CLJ 4500 CLJ 4550 ENWW Print a calibration page 1 Press MENU until 2 Press ITEM until i appears appears 3 Press SELECT to print the color balance calibration page The page consists of four color bars cyan magenta yellow and black and a box containing gray balance circles The factory default setting for each color is zero The range of settings is 5 to 5 Note Adjusting densities using the four color bars provides coarse color balance adjustments After making these adjustments you can fine tune color densities by adjusting the gray balance See step 4 for instructions Image quality 333 Table 4 4 Adjusting color calibration continued Product CLJ 4500 CLJ 4550 continued Instructions Adjust color density 1 Examine the cyan density bar C the magenta density bar M the yellow density bar Y and the black density bar K on the color balance calibration page from a distance of 2 meters 6 feet If the center oval for each bar matches the background pattern more
124. age persists replace the firmware DIMM CLJ 3700 CLJ 4600 CLJ 5500 CLJ 9500 5 If the message persists replace the formatter CLJ 8500 8550 Indicates a DRAM controller error _ Turn the printer off and on to reset the printer 2 Perform DRAM DIMM test from the formatter diagnostics on the Service Menu 3 If the problem persists replace the bad DIMM ENWW Troubleshooting by using control panel messages 207 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 A communication error exists between the 2 000 sheet input unit or the multi bin mailbox and the printer X device number in the link YY error code from the optional device 1 Verify that the C link and power cables are connected N Turn the printer off and on to reset the printer 3 If the message persists see the appropriate service manual CLJ 8500 8550 A 2 000 sheet input unit lifting motor error exists 1 Verify that the C link and power cables are connected 2 Turn the printer off and on to reset the printer 3 Verify that no objects or paper are stored in the left side of the tray 4 Verify that you can move the lifting plate freely by hand 5 Verify that the paper size plates are installed correctly and that they are not bent 6 If the error persists replace the paper deck drive assembly
125. ailed or is obstructed CAUTION Turn the printer off and do not operate the printer in this condition to prevent serious damage 1 Turn the printer off and on to reset it 2 Reconnect connectors J702 and J706 on the carousel motor PCA and connector J220 on the controller board 3 Reconnect connector J701 on the carousel motor PCA connectors J648 and J641 on the main relay PCA and connector J102 on the DC power supply 4 Measure the voltage across J702 3 FAN1ON and J701 2 GND on the carousel motor PCA after the printer is turned on If the voltage changes from 0 V to 24 V replace fan 1 5 Measure the voltage across connector J701 1 24 VB and J701 2 GND on the carousel motor PCA after the printer is turned on If the voltage is about 24 V replace the carousel motor 170 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action i 6 Measure the voltage CLJ 8500 8550 across connector J641 1 continued 24 VB and J641 4 GND on the main relay PCA after the printer is turned on If the voltage is not 24 V replace the main relay PCA 7 Check the ac power supply 8 If the problem is not corrected after the printer is turned off and on again find the cause of activation of the overcurrent overvoltage detection circuit in the power supply Wait more than two minutes before turning the power on again
126. al E355 CLJ 8550mfp E355 is indicated in response to a mismatch of the serial numbers of the copy module the reader controller PCB and the EEPROM while the reader controller PCB is being replaced as when the wrong serial number is entered If this code appears enter the correct serial number of the copy module using Option gt User gt Serial in service mode 238 Chapter 2 Service and troubleshooting ENWW E401 CLJ 8550mfp The error shown on the touch screen display is in the ADF See the CLJ 8550mfp service manual This error indicates that either the pick up motor M1 fails to rotate or the pick up roller sensor S5 is faulty In normal operation a flag is attached to the spindle of the pick up motor M1 and the rotation of the motor is checked in reference to the flag blocking the pick up roller sensor S5 The E401 error is indicated when the sensor does not turn on and off two times or more within one second E402 CLJ 8550mfp The error shown on the touch screen display is in the ADF See the CLJ 8550mfp service manual This error indicates that either the belt motor M3 fails to rotate or the belt motor clock S10 is faulty This error occurs when the number of belt motor clock pulses within 200 ms is less than a specific value E403 CLJ 8550mfp The error shown on the touch screen display is in the ADF See the CLJ 8550mfp service manual This error indicates that either the ADF motor M2
127. all the installed correctly installed or an error printer software Make sure that you occurred during use the correct installation software installation procedure and the correct port setting 24 Chapter 2 Service and troubleshooting ENWW Table 2 1 Basic troubleshooting Verification steps Possible Solutions problems 5 Does the printer print A USB cable anda When both cables are connected from the computer parallel cable are the USB automatically disables Connect the parallel oth connected to _ itself Disconnect both cables and cable or USB cable to the printer then reinstall the one you want to the printer and to the usg computer Use a The cable is not Reconnect the cable word processing connected correctly program to send a An incorrect printer Reset the printer driver Make sure an job to the driver is selected _ that port setting is correct printer Other devices are Disconnect the other devices and connected to the try to print again parallel port ENWW Basic troubleshooting 25 Environmental specifications Table 2 2 Operating environment specifications Product Item Operating Storage CLJ 2500 Temperature 15 to 32 5 C 20 to 40 C printer and print 59 to 90 5 F 4 to 104 F cartridge Relative humidity 10 to 80 95 or less RH CLJ 3500 Temperature CLJ 3700 Recommended 17 to 25 C 63 to 77
128. an no longer be used _ Turn off the printer 2 Remove and reinstall EIO hard disk 3 Turn the printer on again 4 Ifthe error persists replace the EIO hard disk CLJ 8500 8550 The printer hard disk internal self test routine has been invoked to read minimum and maximum logical block addresses with no retries and has detected a failure If access to the printer hard disk is not required printer operation can continue Replace the printer hard disk alternates with CLJ 4600 5500 The printer received an illogical PIL command such as a download toa nonexistent directory _ Printing can continue N Turn the printer off and then on 3 If the message persists a problem might exist with the software program CLJ 8500 8550 9500 The printer received an illogical PIL command such as a download toa nonexistent directory No action is required 72 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The printer hard disk is full 1 At the host computer delete data from the printer hard disk by using the printer drivers or a disk management program 2 To clear all data from the printer hard disk reformat the printer hard disk at the printer control panel a Press MENU until i appears on the display b Press ITEM until
129. and replace the jam corresponding field replaceable unit 2 3 Jam sensor delay The media did not reach the sensor Open jam the VTU door and remove the media Replace the paper feed VTU assembly or the paper pick up assembly 2 4 Jam sensor Open the VTU door and remove the media stationary jam initial jam 1 1 VTU door is open Close the door 1 2 Tray 4 is open Close the tray Wrong paper size Load the correct size of paper or check loaded sensors 1 3 No paper in tray 4 Load paper or check sensors ENWW Troubleshooting printer accessories CLJ 8500 8550 281 Troubleshooting tray 4 CLJ 9500 Tray 4 troubleshooting tools Tray 4 can run standalone diagnostics to test the device motors functionality and sensors You need one power cord one 2 Phillips screwdriver and a small flat blade screwdriver for the DIP switches Tray 4 diagnostics label The tray 4 diagnostics label is located on the inside of the tray 4 back cover Table 2 63 DIP switch settings DIP switch Normal Motor test Standalone Sensor test running test 1 Off On On Off 2 Off On Off Off 3 Off Off Off On 4 Off On On On Note Make sure that you turn the power supply off and set all of the DIP switches to the OFF position normal settings when you finish the diagnostics or the unit will not work correctly Then replace the back cover Tray 4 motor test This test verifies that the three motors on tray 4 are
130. and the DC controller PCB 188 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 6 The connectors in the delivery motor drive signal alternates with line are not connected correctly Reseat the H connectors J5004 and CLJ 3500 3700 J1016 between the continued delivery motor and the DC controller PCB 7 Faulty developing engaging clutch Replace the developing engaging clutch 8 Faulty delivery motor Replace the delivery motor 9 Faulty DC controller PCB Replace the DC controller PCB ENWW Troubleshooting by using control panel messages 189 Table 2 14 Numerical error messages continued Message Description Action CLJ 4600 CLJ 8500 8550 A printer motor error has occurred X Description 0 motor error 1 motor startup error 2 motor rotation error 3 fuser motor startup error 4 fuser motor rotation error 5 print cartridge motor startup error 6 print cartridge motor rotation error 9 ETB motor startup error A ETB motor rotation error B developing disengaging motor startup error C developing disengaging motor rotation error Y Description 0 no color K black C cyan M magenta Y yellow 1 Turn the printer off and then on 2 This message might also appear if the transfer unit is missing or incorrectly installed Ensure that the transfer unit
131. at the DIMM is installed correctly 2 Turn the printer off and then on to reset the printer 3 Remove and replace the DIMM that caused the error ENWW Troubleshooting by using control panel messages 141 Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 CLJ 4600 CLJ 5500 CLJ 8500 8550 continued 05 invalid DIMM speed CLJ 4600 CLJ 5500 CLJ 9500 05 exceeded maximum ROM size CLJ 8500 8550 06 invalid DIMM speed check DRAM CLJ 8500 8550 07 DIMM is reporting incorrect checksum CLJ 8500 8550 10 DIMM address CLJ 8500 8550 11 PDC XROM out of bounds CLJ 8500 8550 12 could not make temporary mapping CLJ 8500 8550 13 invalid RAM type CLJ 8500 8550 14 DIMM not paired correctly CLJ 8500 8550 15 bad firmware upgrade DIMM checksum CLJ 8500 8550 16 more than one set of firmware upgrade DIMMs CLJ 8500 8550 17 not enough DRAM to run CLJ 8500 8550 N ElO slot number CLJ 8500 8550 1 bottom EIO slot 2 top EIO slot CLJ 4600 CLJ 5500 CLJ 9500 A DIMM is installed in both 168 pin DIMM Slot 4 and 100 pin DIMM Slot 5 This is an invalid configuration DIMMs cannot be installed in both of these slots at the same time Remove one of the DIMMs or move one of the DIMMs to a different slot 142 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerica
132. ated into the ITB up position 1 Press the ITEM key until displays 2 Frogs the SELECT key to run the test The front panel displays E while the test is running Watch to see if the ITB lift cams turn and if both the drum drive gear and the ITB drive gear is rotating Path sensors CLJ 4500 4550 The path sensors test allows the paper path sensors and switches to be tested for correct operation The table below shows the correlation between the identifier on the front panel and the sensor or switch it represents Table 2 58 Paper path sensors and switches CLJ 4500 4550 Name Description PS8 Tray 2 paper detect sensor PS3 Tray 1 last piece of media pulled sensor PS4 Tray 1 paper detect sensor SW801 Tray 2 paper size switch 2 SW802 Tray 2 paper size switch 1 SW803 _ Tray 2 paper size switch 0 PS83001 Optional Tray 3 paper detect sensor SW3001 Optional Tray 3 paper size switch 2 SW3002 Optional Tray 3 paper size switch 1 SW3003 Optional Tray 3 paper size switch 0 PS10 Carousel position sensor PS11 N A N A 500 sheet feeder 1 installed O uninstalled PS9 Top output tray full sensor ENWW Diagnostics mode CLJ 4500 4550 275 is displayed on the front panel 2 Press the SELECT key to activate the test The front panel will display A through N with a binary value below it When running this test make sure the ITB drawe
133. ation about using the embedded Web server see the HP Embedded Web Server for HP LaserJet Printers and MFPs manual Configuration page Use the configuration page to view current printer settings and properties to help troubleshoot printer problems or to verify installation of optional accessories such as memory DIMMs paper trays and printer languages The following sections are included on the configuration page of most printers e Printer Information Contains basic information about the printer such as the product name printer name and page count e Configuration menu Lists the current settings of the configuration menu items e Event Log Contains information about printer errors e Usage information Contains the number and types of pages printed e Installed personalities and options This section contains information about optional items that might be installed such as DIMMs or an HP Jetdirect print server card e Memory Lists memory related information such as the total memory installed e Security Contains information about security features such as whether the printer control panel password is enabled or disabled e Paper Tray Information Contains information about the trays such as whether optional trays are installed and the type and size of paper that might be set for each tray e I O menu Lists the current settings of the I O menu items e Calibration density settings CLJ 4500 and CLJ 4550 only Conta
134. bleshooting 0 0 eee 338 Imaging drum defects 0 00 e eee ee 339 viii Contents ENWW ENWW 5 illustrations Major components 0 00 eect eee ee 346 CLJ 2500 major components 00000 eee eee 346 CLJ 3500 3700 1 ees 350 CLJ 4500 4550 major components 5 357 CLJ 4600 major components 20000 eee 364 CLJ 5500 major components 20000 eee eee 368 CLJ 8500 8550 major components 5 374 CLJ 9500 major components 00000 eee 380 Power On SEQUENCES 1 ee eae 386 CLI2500 irekien el Wada a dali dae aa RAA 386 CLUJ 3500 3700 1 ees 387 CLJ 4500 4550 eae cca deeb wiadaddbeasiwadabedoeda a 389 CLU 4600 eee eens 389 GLISS ecg Jia ad bee wee ae bk heed ah hae 390 CLUJ 8500 8550 1 eee 391 GLOSO as esas oad hae eed a RAT A eee oe 392 A Service support Obtaining work instructions 0000 cece eee eee 396 To gain access to work instructions 04 396 Embedded web server 00000 eee eee eee eee 397 Obtaining service notes 0 ees 397 To gain access to service notes 2200 397 Service websites 0 00 0 cece ee teen eee 398 HP Customer Care Online 0 00 c eee 398 HP learning center 00 cee ee 398 Pats 6 ecb ia soars ae Soka Fale Pad dae eee Gace s Ses a 398 Index Contents ix x Contents ENWW T Control panel Con
135. bpl90005 HP Color LaserJet 4500 and 4550 series Printers Error 54 2 bpl90006 HP Color LaserJet 4500 and 4550 series Printers Printing Blank Pages bpl90008 HP Color LaserJet 4500 and 4550 series Printers 13 0 Paper Jam HP Color LaserJet 4500 13 1 HP Color LaserJet 4550 bpl90043 HP Color LaserJet 4500 and 4550 series Printers Five Types of Ghosting bpl90129 HP Color LaserJet 4500 and 4550 series Printers Middle Front Drawer Will Not Open or Close bpl90333 HP Color LaserJet 4600 series Printers Multi feeds from Tray 2 or Tray 3 396 Appendix A Service support ENWW Embedded web server Use the HP Embedded Web Server to view information pages for the CLJ 2500 CLJ 4600 and CLJ 5500 Here is how to gain access to the embedded Web server 1 Open a Web browser 2 Inthe Address or Go to field type the IP address assigned to the product for example http 192 168 1 1 or the host name for example http myproduct If you do not know the IP address for the product it is listed on the Configuration page Obtaining service notes To gain access to service notes 1 Open a Web browser such as Internet Explorer or Netscape Navigator N Type http partner americas hp com in the Address or Go box and then press Enter Under enter site click hp partner web Type your user name and password Click support Under technical support information click technical support website
136. ce the cassette Pickup roller is worn or damaged Replace the pickup roller Feed roller is dirty worn or damaged Clean the feed roller If it is still dirty after cleaning or if it is worn or damaged replace the feed roller Drive gears are damaged Check the drive gears in the paper pickup unit Replace the pickup drive assembly if the gears are damaged Cassette pickup solenoid is damaged 1 Disconnect the connector for the cassette pickup solenoid from the DC controller PCB 2 Measure the resistance between the cable side connectors J1020 13 and J1020 12 3 Ifthe measured resistance is NOT about 160 ohms replace the cassette pickup solenoid Pickup motor is defective Replace the paper pickup drive assembly Paper pickup assembly is defective Replace the paper pickup assembly DC controller PCB is defective Replace the DC controller PCB Calibrate the printer after replacing the DC controller 318 Chapter 3 Jams ENWW CLJ 4600 5500 jams in tray 3 Table 3 11 Causes for jams in tray 3 CLJ 4600 5500 Issue Solution Separation tabs in the paper cassette are deformed Straighten the tabs on the front corners of the tray or replace the cassette Pickup roller is worn or damaged Replace the pickup roller Feed roller is dirty worn or damaged Clean the feed roller If it is still dirty after cleaning or if it is worn or
137. ck the Tray 1 area Check the fuser assembly output assembly and entire paper path duplex unit 3 13 9 Irregular media jam inthe paper 10 13 1 Jam in fusing area Check the path Check the Tray 1 area Check the fuser assembly output assembly and entire paper path duplex unit 4 13 8 Door open jam Check the rear 11 113 1 Jam alternates with H F Check the middle front drawer Check and pull out the fuser 300 Chapter 3 Jams ENWW Table 3 2 Jam locations and error messages CLJ 4500 of the duplex unit and the duplex tray 5 13 6 Jam in duplex paper feed area 12 13 1 Jam Check in rear of drawer Inspect the rear of the duplex unit and Check the rear of the middle front the duplex tray drawer Reseat the transfer roller 6 13 5 Jam in duplex paper feed area 13 113 0 Jam in input feed area Check the Inspect the rear of the duplex unit and input trays and duplex unit the duplex tray 7 113 4 Jam in duplex unit Inspect the rear 14 13 12 Media did not clear the input sensor in time Table 3 3 Jam locations and associated error messages CLJ 4550 rear of the duplex unit and the duplex tray 1 13 25 Media in the paper path is too 8 13 10 Jam in duplex reverse unit long Check the Tray 1 area Check the Inspect the rear of the duplex unit and entire paper path the duplex tray 2 13 24 Media in the paper path is too 9 113 6 Jam
138. commended 20 to 26 C 68 to 79 F 0 to 35 C 32 to 95 F Allowed 15 to 30 C 59 to 86 F 20 to 60 C 4 to 140 F Humidity Recommended 20 to 50 RH 35 to 85 RH Allowed 10 to 80 RH 10 to 95 RH Altitude Allowed 0 to 3 048 m 0 to 10 000 ft 0 to 3 048 m 0 to 10 000 ft CLJ 9500 Temperature Recommended 20 to 26 C 68 to 79 F 20 to 26 C 68 to 79 F Allowed 10 to 30 C 50 to 86 F 15 to 30 C 59 to 86 F Humidity Recommended 20 to 50 5 to 95 Allowed 10 to 80 5 to 95 ENWW Basic troubleshooting 27 Table 2 3 Electrical specifications Product Item 110 volt models 220 volt models CLJ 2500 Power 115 to 127 V 10 220 to 240 V 10 requirement 60 Hz 2Hz 50 Hz 2 Hz Power Printing color 400 W Printing color 403 W consumption Printing mono 224 W Printing mono 217 W Standby 30 W Standby 31 W Off 0 W Off 0 W Minimum 12 Amps 6 Amps recommended circuit capacity for a typical product CLJ 3500 Power 100 to 127 V 10 220 to 240 V 10 requirement 50 to 60 Hz 2 Hz 50 to 60 Hz 2 Hz Power Printing 400 W Printing 400 W consumption Standby 25 W 26 W for Standby 25 W 26 W for CLJ 3500n printers CLJ 3500n printers Off 0 25 W Off 0 25 W Minimum 5 3 Amps 3 Amps recommended circuit capacity for a typical product CLJ 3700 Power 100 to 127 V 10 220 to 240 V 10 re
139. communication start Y Residual paper door open Failure check period Toner cartridge presence level life check check period Y Image cartridge presence life waste toner full check 7 Laser scanner motor initial drive Laser scanner motor initial drive check f Maximum image density control D max i Halftone calibration detection control D half Image stabilization ee eae h A Y_ calibration control Standby 386 Chapter 5 Illustrations ENWW CLJ 3500 3700 Table 5 3 Basic operation sequence CLJ 3500 3700 Period Purpose Remark WAIT From the time the power Clear the charge Detect the presence of the wait switch is turned on until from the drum cartridge and the period the ITB cleaning is surface and clean environmental conditions completed the ITB Control the color misregistration and the image stability as required STBY From the end of the To keep the printer Go into sleep when a sleep standby WAIT or ready to print command is sent from the period LSTR period until either formatter a print Adjust the color command is sent from misregistration and controls the the image stability according formatter or the power to the executable command switch is turned off INTR From the time the Stabilize the initial formatter sensitivity of rotations sends a print command the photo
140. component Reference CLJ 5500 component M1 cyan drum motor M6 ETB motor M2 yellow drum motor PM1 developing disengaging motor M3 magenta drum motor PM2 pickup motor M4 black drum motor PM3 lifter motor M5 fuser motor FM1 power supply fan FM2 formatter fan FM3 cartridge fan 372 Chapter 5 Illustrations ENWW 4 Y Figure 5 27 CLJ 5500 PCB locations Reference CLJ 5500 component 1 I O daughter card 2 Firmware DIMM 3 Static discharge PCB assembly 4 Formatter simplex Formatter duplex DC controller PCB E label memory controller PCB Cassette sensor PCB Multi purpose tray sensor PCB O MDINI OO oO Toner sensor PCB 10 High voltage power supply PCB 11 Fuser power supply PCB The formatter is available with either simplex or duplex capability Be sure to use the correct formatter for the model of printer you are servicing The HP Color LaserJet 5500 and 5500n printers do not have duplex capability ENWW Major components 373 CLJ 8500 8550 major components Delivery assembly Black cartridge cam assembly Black cartridge guide assembly Delivery drive assembly Paper pickup Left cover assembly feeder assembly Transfer belt assembly Registration roller assembly Tray 1 pickup fee assembly Tray 1 assembly Registration frame assembly Figure 5 28 CLJ 8
141. controller board _ A printer error has occurred Press SELECT to continue X Description 2 Turn the printer off and 1 beam detect error inen on 2 laser error 3 Reseat the connectors between the laser Y Description scanner and DC controller E 0 no color PCB a K black CLJ 3500 3700 CLJ 4600 C cyan ee CLJ 5500 Mimadenia scanner assembly if it is age defective Calibrate the Y yellow printer after replacing the laser scanner 5 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Troubleshooting by using control panel messages 133 Table 2 14 Numerical error messages continued Message Description Action A laser scanner assembly CAUTION laser error occurred When servicing the printer alternates with with the top cover off cover X description the top of the printer to 1 beam detect error prevent light leaks that might 2 laser error blind the laser scanner beam detect sensors Y description 4 Check the FFCs for 0 no color damage and make sure K black that they are correctly C cyan f M magent centered and seated in g the connectors Replace Y yellow the FFCs if necessary 2 The following are color specific steps K laser Check connector J3012 on the laser driver PCA connector J3056 on the scanner motor connector J3061 on the beam detect PCA connectors J812 and J815 o
142. controller board and connectors J631 to J633 and relay connector J71 on the waste toner sensor Reconnect connector J209 and relay connectors J47 and J48 on the controller board Replace the drum cartridge Replace the waste toner sensor Troubleshooting by using control panel messages 75 Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 4500 4550 An error has occurred in the duplexer 1 Verify that the duplexer is correctly installed 2 Verify that the small power cord from the duplexer is plugged into the printer and the power cord from the ac outlet is plugged into the duplexer CLJ 8500 8550 The printer has detected an error in the duplexer 1 Open the left lower cover press the green tab on the right side of the duplexer and pull the duplexer out of the printer Check for and remove any jammed media from the duplexer Reinstall the duplexer 2 Turn the printer off and on to reset the printer 3 If the message persists replace the duplexer CLJ 4600 5500 9 The EIO disk in slot X is not working correctly Remove the EIO disk from the slot indicated and replace it with a new EIO disk drive An EIO accessory is initializing lt n gt EIO slot number 1 Bottom EIO slot 2 Top EIO slot No action is required 76 Chapter 2 Service and troubleshooting ENWW Table 2
143. controller PCB PCB 232 Chapter 2 Service and troubleshooting ENWW E211 E215 CLJ 8550mfp E211 The scanning lamp fluorescent lamp thermistor has an open circuit This error occurs when the temperature does not reach 10 C 50 F after supplying the scanning lamp heater with power for two minutes starting at 0 C 32 F or less It can also occur when the temperature drops to 0 C 32 F or less during temperature control E215 The scanning lamp fluorescent lamp thermistor has a short circuit This error occurs when the scanning lamp thermistor detects 170 C 338 F or more when the fluorescent lamp ON signal FLON is off including power on Table 2 33 Cause and solutions for E211 E215 errors CLJ 8550mfp Cause Issue Solution Step 1 Disconnect connector J1610 of the reader controller PCB and measure the resistance between connectors J1610 5 GND and J1610 6 FL_TH on the harness side Is it 100 Q or less or 100 KQ or more No The reader controller PCB is faulty Go to step 4 Yes Go to step 2 Lamp heater Step 2 Disconnect connector J2039 of the lamp heater and measure the resistance between connectors J2039 2 GND and J2039 3 FL_TH Is it 100 Q or less or 100 K Q or more Yes Replace the lamp heater Flat cable Step 3 Are connector J1610 No Connect the connectors between connectors J2037 and J2015 of the flat securely J2037 a
144. controller is not available for the LU8550 MFP ENWW Troubleshooting by using control panel messages 241 E805 CLJ 8550mfp The heat discharge fan 1 FM used for the fusing assembly and area near the feeding assembly is faulty This error occurs when the motor lock signal FAN1LK goes to one 1 for 1 5 seconds or more while the fan is rotating Table 2 42 Cause and solutions for E805 error CLJ 8550mfp rotary motor PCB between connectors J701 1 24 VB and J701 2 GND on the developing rotary motor PCB immediately after the copier is turned on Cause Issue Solution Connectors Are connectors J702 and J706 on the No Connect the connectors heat developing rotary motor PCB and securely discharge connector J220 on the dc controller fan 1 drive PCB connected securely assembly Connectors Are connector J701 on the developing No Connect the connectors 24 V for rotary motor PCB connectors J648 securely heat and J641 on the main relay PCB and discharge J102 on the dc power supply fan 1 drive connected securely Heat Does the voltage change to about 24 V Yes Replace the heat discharge between connectors J702 3 FAN1ON discharge fan 1 fan 1 on the developing rotary motor PCB and J702 1 GND Developing Does the voltage change to about 24 V Yes Replace the developing rotary motor PCB Main relay Does the voltage between connectors Yes Replace the main relay PCB J641 1 24 VB an
145. ctly 3 If the error does not clear turn the printer off and then turn the printer on again 4 Ifthe error persists check the tray size sensor mechanisms the registration sensor for correct functionality and the supporting connectors to the DC controller PCA alternates with CLJ 4500 4550 A tray is configured for a specific media type but the printer detects that a different media type is loaded The most common cause for this error is a jam at the registration plate under the ITB where the customer does not remove the media The engine tries to check the OHT sensor and receives an error message 1 Verify that the correct media type is loaded in the input tray and the printer control panel is configured correctly 2 Clean the detection windows for OHT sensors 1 and 2 116 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 The printer was expecting one type of media to be fed from an input tray anda different type was fed For example the printer was expecting transparencies and plain paper was fed 1 Open and close the front door to remove the page from the printer 2 Verify that the correct media is loaded in the input tray and the printer control panel is configured correctly 3 Clean the detection windows for OHT sensors 1 and 2 4 Reconnect
146. d PCA If the message persists replace the delivery head assembly ENWW Troubleshooting by using control panel messages 61 Table 2 13 Alphabetical printer messages continued Message Description Action Check the event log message These instructions are for event log message The printer senses a jam in the multi bin mailbox Event log message 13 22 04 1 Check for a jam in the delivery head assembly 2 Ensure free movement in the sensor flags PSExit1 on the delivery head assembly 3 Verify that the delivery roller fingers are over the ejector rollers on the delivery head assembly 4 If the message persists replace the flat ribbon cable that connects to the delivery head assembly to the controller board PCA 5 If the message persists replace the multi bin mailbox controller board PCA 6 If the message persists replace the delivery head assembly 62 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action Check the event log message These instructions are for event log message The printer senses a jam in the multi bin mailbox Event log message 13 22 05 1 Check for a jam in the delivery head assembly 2 Ensure free movement in the sensor flags PSExit2 on the delivery head assembly 3 Verify that the delivery roller fingers are over the
147. d J641 4 GND on PCB the main relay PCB change to 24 V immediately after the copier is turned on The dc Is the dc power present No See the CLJ 8550mfp power service manual Yes Replace the dc controller PCB 242 Chapter 2 Service and troubleshooting ENWW E806 CLJ 8550mfp The heat discharge fan 2 FM2 used for the area around the intermediate transfer drum is faulty This error occurs when the fan motor lock signal FAN2Lk goes to one 1 for 1 5 seconds or more while the fan is rotating Table 2 43 Cause and solutions for E806 error CLJ 8550mfp rotary motor PCB V between connectors J701 1 24 VB and J701 2 GND on the developing rotary motor PCB immediately after the copier is turned on Cause Issue Solution Connectors Are connectors J603 and J706 on the No Connect the connectors heat developing rotary motor PCB and securely discharge connector J220 on the dc controller fan 2 drive PCB connected assembly Connectors Is connector J701 on the developing No Connect the connectors 24 V for rotary motor PCB connectors J648 securely heat and J641 on the main relay PCB and discharge connector J102 on the dc power fan 2 drive supply connected securely Heat Does the voltage change to about 24 Yes Replace the heat discharge discharge V between connector J703 3 fan 2 fan 2 FAN2ON and J703 1 GND on the developing rotary motor PCB immediately after the copier i
148. damage N oa A Remove the duplexer Check the inside of the duplexer and the duplexer cavity for residual media Check the duplex delivery sensor for correct movement and functionality 3 Check for deformed or misaligned delivery rollers 4 Check the delivery feed assembly drive gear train 5 Make sure that the upper and lower left doors are Check the face down output sensor for correct movement and functionality Check the face down and duplex diverters for correct functionality completely closed 312 Chapter 3 Jams ENWW Table 3 8 CLJ 9500 jam messages Message Solution 1 Check for residual media near the face down output sensor 2 Check for obstructions in the paper path 3 Check the feed rollers and drive gear trains for damage 1 Check for residual media near the face down output sensor 2 Check for obstructions in the paper path 3 Check the feed rollers and drive gear trains for damage ENWW Jams 313 Persistent jam troubleshooting CLJ 2500 See the service notes and work instructions for this product CLJ 3500 3700 See the service notes and work instructions for this product CLJ 4500 4550 See the service notes and work instructions for these products CLJ 4600 5500 If jams occur repeatedly use the information in this section to diagnose the root cause of the problem The tables in this section list possible causes and
149. der controller PCB to home the scanner is at PS101 PS101 if normal replace position PS101 sensor PS101 Wiring Is there any fault in the wiring or Yes Connect the wiring connectors from J1605 on the reader correctly controller PCB to J303 and J302 on the scanner motor driver PCB Scanner Replace the scanner motor driver PCB Yes End motor driver Is the problem corrected PCB Scanner Replace the scanner motor PM1 Is Yes End No Replace the reader controller PCB ENWW Troubleshooting by using control panel messages 231 E203 CLJ 8550mfp The scanner motor driver PCB or the scanner motor is faulty This error occurs when the scanner home position is detected during back scanning not requiring return to the scanner home position sensor It can also occur if a deviation occurs during back scanning returning to the scanner home position sensor Table 2 32 Cause and solutions for E203 error CLJ 8550mfp Cause Issue Solution Does the scanner move until E203 No See the CLJ 8550mfp service is indicated manual Scanner Does the voltage between Yes Replace the scanner motor motor driver connectors J303 B1 RST on the driver PCB If the problem cannot PCB scanner motor driver PCB and J303 be corrected replace the scanner Scanner B4 GND and between connectors _ motor motor J303 B2 MOVE and J303 B4 GND change from 5 to OV Reader No Replace the reader controller
150. e CLJ 2500 to clear jams from inside the printer on page 294 and CLJ 2500 to clear jams from output areas on page 295 CLJ 2500 to clear jams from output areas CAUTION Jams in these areas might result in loose toner on the page If you get toner on your clothes or hands wash them in cold water Hot water will set the toner into the fabric 1 Complete one of these steps If the paper is not almost completely visible from the top output bin proceed to step 2 If the paper is almost completely visible pull it carefully out of the printer and proceed to the step 9 2 Open the rear output door 3 If the leading edge of the paper is visible from the rear opening carefully pull the paper out 4 lf the jam is too far into the printer to remove turn off the printer and disconnect the power cable CAUTION Always turn off the printer and disconnect the power cable before you remove the fuser 5 Rotate the locks on the fuser to the unlocked position 6 Grasp the fuser handles and pull to remove the fuser from the printer WARNING The parts on the internal surface of the fuser are very hot To avoid burning yourself do not touch those parts 7 Using both hands slowly and steadily remove any paper from inside the printer Then carefully reinsert the fuser and secure the locks 8 Reconnect the power cable and turn on the printer 9 Open the top cover close it again and then press Go if the Go light is
151. e clean CLJ 8500 8550 Media was stacked in tray 1 for continuous manual feed printing and the job has been completed However the input tray contains media The printer considers the input tray not to be configured Configure the media type for tray 1 or remove the remaining media CLJ 8500 8550 A user has requested a media size that is not currently installed in tray 1 lt type gt Last media type configured for the input tray lt size gt Last media size configured for the input tray Load the media type and size specified on the printer control panel display After tray 1 is loaded the printer automatically brings itself online If the correct media type and size are loaded in tray 1 and the media does not feed into the printer verify that the printer control panel settings for tray 1 Cassette mode match the media type and size requested 106 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 8500 8550 This message appears when media is placed in tray 1 and the tray is configured for Cassette Mode lt size gt Last media size configured for the input tray 1 Press VALUE to view the selections 2 Press SELECT when the media size and type you want appears 3 Press GO to bring the printer online If no key is pressed for 30 sec
152. e 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 CLJ 3700 CLJ 4600 CLJ 5500 CLJ 8500 8550 A critical ElO failure has occurred X indicates the slot number of the device YYYY YYY in the case of the CLJ 8500 8550 indicates the error type 1 Turn the printer off and on to reset the printer 2 Ifthe error persists reseat the EIO card 3 Ifthe error persists try the EIO card in a different EIO slot if available 4 Ifthe error persists replace the EIO card CLJ 3500 3700 Event log only Remote firmware update RFU failed Resend the update ENWW Troubleshooting by using control panel messages 217 Numbered error codes for the CLJ 8550mfp These error messages appear on the copy module LCD at the time they occur A history of errors can be reviewed through the copy module service mode COPIER gt DISPLAY gt ERR See Service mode functions on page 248 Note Errors described as printer or printer unit will also appear as error messages on the printer LCD E000 E003 CLJ 8550mfp E000 The fusing assembly warm up is faulty This error occurs when it takes longer than the reference time for the assembly to reach the standby temperature after the fusing heater has been turned on E003 The fusing temperature is abnormally low This error occurs when the fusing assembly temperatur
153. e 2 14 Numerical error messages continued Message Description Action alternates with CLJ 4600 CLJ 8500 8550 continued Developing disengaging motor error 1 Reconnect the connectors J4024 and J1019 between the developing disengaging motor and the DC controller PCB 2 If the error persists replace the developing disengaging drive assembly 3 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller CLJ 5500 1 Turn the printer off and then on 2 This message might also appear if the transfer unit is missing or incorrectly installed Ensure that the transfer unit is correctly installed ETB motor error 1 Clean the ETB unit intermediate connector J36 If the connector is damaged replace it 2 Reconnect the connectors J38 for the ETB motor and J1111 on the DC controller PCB 192 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 3 If the error persists replace the ETB motor 4 Ifthe error persists replace the DC controller alternates with PCB Calibrate the printer after replacing the DC controller See Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only on page 263 CLJ 4600 CLJ 8500 Fuser motor error 8550 1 Reconnect the continued connectors J18 for the fuser motor and J1101 on the
154. e ITEM key until F displayed 2 Press the SELECT key 3 Measure from the left side of the paper to the lines and find the line that is 13 mm 0 5 inch from the edge of the paper lf the number for the line is different then the current number 1 Press the ITEM key until 7 is displayed 2 Press the VALUE key to change the number to the number required 3 Press the SELECT key 268 Chapter 2 Service and troubleshooting ENWW Engine test The test patterns either contain vertical lines or horizontal lines depending on the product When an image defect appears a test print can be made to identify the problem The test print can be made by pressing the test print switch located on the right side of the printer see figure below The engine test does the following e Verifies that the print engine is functioning correctly the formatter PCB is completely bypassed during an engine test e Isolates printer problems e Checks and adjusts registration e Can be activated with the formatter PCB removed Table 2 55 Engine test button Product Location of engine test button The engine test switch is inside tray 1 on the left side just below the front cover To print an engine test turn the product off and then on again open tray 1 and then press the engine test switch Note The formatter must be connected to the ECU to perform an engine test Otherwise the printer does not print the engine test CLJ 3
155. e cable is malfunctioning Try using a different high quality USB or IEEE 1284 compliant size B parallel cable 4 lf the error persists reduce the complexity of the print job and try again to print ENWW Troubleshooting by using control panel messages 45 Table 2 11 Attention secondary messages CLJ 2500 continued Ow Aie uma vis Chosen Personality Not Available error The current job was canceled because the printer language personality is not supported 1 Press GO to clear the message 2 If you printed the job using one of the PCL drivers try printing using the PS driver or vice versa 3 Turn off the printer and remove or replace the language font DIMM CAUTION You must turn off the printer before inserting or removing DIMMs Ac Oo Data Received error The printer received data and is waiting for a form feed Press GO to print the last page Sending another print job can also cause the page to print o Aw sop Bake General Attention with Ability to Continue error Press GO to try to continue printing If the error persists switch printer drivers and try again to print 46 Chapter 2 Service and troubleshooting ENWW Table 2 11 Attention secondary messages CLJ 2500 continued 68 x Permanent Storage error Press GO to clear the message Check the printer settings The nonvolatile memory NVRAM Remove the Jetdirect card i
156. e de doe 35 EVOM O ictscex state oheiieeei EPI iad Oh DETE is 36 Supplies status page eens 37 Troubleshooting by using control panel messages 39 CLJ 2500 control panel light messages 39 Alphabetical printer messages 2000000e 53 Numerical error messages 0c eee eee 109 Numbered error codes for the CLJ 8550mfp 218 Service mode functions 0000 c eee eee 248 To gain access to the service mode 248 Service menu iteMS 000 ce ee 252 NVRAM Initialization 00 0002 cee ee 258 To perform NVRAM initialization 4 258 Hard disk initialization 00000 ee eee 261 Calibration bypass CLJ 3500 3700 4600 5500 only 263 Calibrate Now CLJ 3500 3700 4600 5500 only 263 Cold Reset i aaa dese eek bad se bbe alee ee eas aa eds 264 Registration page 6 eee ee ee 266 Setting registration numbers CLJ 4500 and CLJ 4550 only 267 vii Engine t6St iii vce dete ee cee ne eae tee eee ee ee eaawead od 269 Diagnostics mode CLJ 4500 4550 2 20 0c ee eee 270 Gaining access to the diagnostics mode 271 Engine diagnostics CLJ 4500 4550 00 273 Troubleshooting printer accessories CLJ 8500 8550 279 Service LED descriptions 00 0c eee eeee 280 Troubleshooting tray 4 CLJ 9500 0 cee eee 282 Tra
157. e drops below 120 C 248 F after it has reached the target value 218 Chapter 2 Service and troubleshooting ENWW Table 2 15 Cause and solutions for E000 E003 errors CLJ 8550mfp Cause Issue Solution Upper Remove the fusing assembly and No Check the wiring from thermistor measure the resistance between connector J222 on the dc open connectors J26F A4 FXTHU and controller PCB to the upper circuit J26F A3 GND on the fusing thermistor if it is normal replace assembly side Is it between 250 KQ the fuser assembly and 600 KQ normal temperature Lower Measure the resistance between No Check the wiring from thermistor connectors J26F A2 FXTHL and connector J222 on the dc open J26F A1 GND on the fusing controller PCB to the lower circuit assembly side Is it between 250 KQ thermistor if it is normal replace and 600 KQ normal temperature the fuser assembly Upper With the fusing assembly removed is No Check the upper fusing heater fusing there electrical continuity between and thermal switch Replace the heater connectors J27F 3 HTUH and J27F fuser assembly if any problems upper 4 HTUC on the fusing assembly are found thermal side switch open circuit Lower Is there electrical continuity between No Check the lower fusing heater fusing connectors J26F 3 HTLH and J26F and the lower thermal switch heater 4 HTLC on the fusing assembly Replace the fuser assembly
158. e information that the service engineer needs for onsite repair of HP LaserJet color products it is not intended to replace the service manual for any product For detailed information about the HP color LaserJet products described in this guide see the user guide or service manual for that product Service manuals for HP LaserJet products are available from Hewlett Packard This is the phone number for the Service Parts Order Desk 800 227 8164 U S only If you are located outside of the U S contact your local HP Sales and Service Office see Service support on page 395 ENWW iii Supported products Note This guide will be updated as the service needs change as new products are introduced or as information becomes available Table 0 1 Supported products Supported Model Maximum pages Service manual product number per month printing part number CLJ 2500 C9706A 30 000 C9706 90926 CLJ 2500L C9705A CLJ 2500n C9707A CLJ 2500tn C9708A CLJ 2500se C9694A CLJ 3500 Q1319A 30 000 Q1321 90930 CLJ 3500n Q1320A CLJ 3700 Q1321A 30 000 Q1321 90930 CLJ 3700n Q1322A CLJ 3700dn Q1323A CLJ 3700dtn Q1324A CLJ 4500 C4084A 35 000 C7085 90921 CLJ 4500N C4089A CLJ 4500dn C4094A CLJ 4550 C7085A 35 000 C7085 90921 CLJ 4550n C7086A CLJ 4550dn C7087A CLJ 4550hdn C7088A CLJ 4600n C9660A 85 000 C9660 90901 CLJ 4600dn C9661A CLJ 4600dtn C9662A CLJ 4600hdn C9663A CLJ 5500 C9656A 120 000 C9656 90930
159. e memory diagnostics CLJ 4500 4550 272 errors 47 212 initialization 258 numerical list error messages 109 NVRAM diagnostics CLJ 4500 4550 272 errors 47 212 initialization 258 O OHT sensor 151 operating environment specifications 26 troubleshooting 19 ordering parts 398 service manuals iii ENWW output bins print cartridges errors 168 carousel errors 144 146 full 77 106 developer test CLJ 4500 4550 274 jams 63 error messages 110 111 top sensor errors 102 life expectancies 328 lock toner lever message 95 P non HP 96 replacing customer responsibilities 17 status lights CLJ 2500 2 status page printing 37 toner out message 105 troubleshooting 82 PRINT sequence 394 printer languages troubleshooting 46 54 products supported iv pages per month iv paper error messages 44 106 size mismatch 104 unexpected size 116 unexpected type 116 paper jams See jams paper path CLJ 2500 jams clearing 293 CLJ 3500 3700 jams clearing 296 R CLJ 4500 4550 jams clearing 300 Ready light CLJ 4600 jams clearing 302 accessory error messages CLJ 2500 47 CLJ 8500 8550 jams clearing 305 CLJ 2500 locating 2 CLJ 9500 jams clearing 308 CLJ 2500 messages 40 jams persistent 314 CLJ 2500 status 39 test 289 CLJ 3500 3700 locating 3 transfer wrap jams CLJ 8500 8550 323 CLJ 4500 4550 locating 4 troubleshooting 288 CLJ 4600 5500 locating 5 paper pickup roller replacing 17 CLJ 8500 8550 locating 6 parallel ports
160. e print job CLJ 4500 4550 decompression of the strip buffers when the end of the strip marker is missing This is triggered by one of the following 1 The marker is corrupt 2 The strip buffer size given to HiLite is too small 3 The strip buffer size given to HiLite is too large This error is primarily associated with the firmware and should not require a new formatter ENWW Troubleshooting by using control panel messages 123 Table 2 14 Numerical error messages continued Message Description Action A large print job 800 to CLJ 4500 4550 1 200 pages or complex graphics can cause the printer to stop printing 1 Determine the page that is causing the failure If the page contains an image try to move the image down on a portrait page or to the left ona landscape page to move the image out of the strip that is failing The movements have to be very small so that the next strip will not fail 2 Put the printer in lossy mode with a sequence of PJL commands ESC 12345X PuJL PJL Default Service mode HPBOISEID PJL Default Diagnostics ON PJL Enter Language PCL ESC 12345X PuJL Esc z9999P Esc z50P Esc z201X To turn off lossy mode use the following commands ESC 12345X PuJL PJL Default Diagnostics OFF PJL Default Service Mode EXIT PJL EOJ ESC 12345X PJL Using the printer in lossy mode might affect performance and print quality 7 An issue re
161. e two green handles on either side of the fuser to disengage the fuser rollers 3 Pull media by both corners to remove it 4 Firmly press down on the two green handles on either side of the fuser to re engage the fuser rollers ENWW Jams 303 Table 3 5 Jam locations and error messages CLJ 4600 5500 Message Solution During a duplex print job media was removed from the output bin before it entered the duplex path or media has entered the duplex path but it is stuck 1 Open the top cover and the front cover Do not open the ETB 2 Pull media by both corners to remove it One of the covers is not completely closed Ensure both covers are closed before printing 1 Open the covers and the ETB 2 Pull media by both corners to remove it 304 Chapter 3 Jams ENWW CLJ 8500 8550 jam locations Top face down output bin Top face down delivery rule output bin PS11 V Face down delivery roller PS5 Fusing delivery sensor PS1903 Left f Upper eft face up By bin fusing roller o up delivery roller Registration roller paper sensor PS1 Tray 1 pick up roller Registration Feed roller 2 Lower Transfer roller V PS17 fusing roller belt Pick up unit aper sensor Pick up roller Q 2 PAR Tray 2 wee Pick up roller O A Tray 3 a Figure 3 5 Printer paper path CLJ 8500 8550 Table 3 6 Jam detection CLJ 8500 8550 Issue Cause Pick up
162. een connector J222 on the dc controller short connectors J26F A4 FXTHU and PCB to the upper thermistor if it is circuit J26F A3 GND on the fusing normal replace the fuser assembly assembly side Is it 2 KQ or less Lower Measure the resistance between Yes Check the wiring from thermistor connectors J26F A2 FXTHL and connector J222 on the dc controller short J26F A1 GND on the fusing PCB to the lower thermistor if it is circuit assembly side Is it 2KQ or less normal replace the fuser assembly Power Replace the power supply of the Yes End supply printer unit Is the problem No Replace the dc controller PCB printer corrected unit CAUTION If E001 or E003 is indicated be sure to discharge the error memory capacitor C259 on the dc controller PCB after troubleshooting the problem as it can contain error memory Short out JP201 on the dc controller PCB to discharge C259 see the Printer Unit Service Manual 220 Chapter 2 Service and troubleshooting ENWW E004 CLJ 8550mfp The upper and lower fusing heaters have an open circuit This error occurs when no ac current is found in the fusing heater at the start of temperature control Table 2 17 Cause and solutions for E004 error CLJ 8550mfp printer unit Cause Issue Solution Upper With the fusing assembly removed is No Check the upper fusing fusing electrical continuity present between heater and the upper therma
163. engine test print switch and test print One sheet of paper will be fed into the printer from Tray 1 and will be delivered to the face down delivery tray 54 33 1 Defective laser scanner Replace the laser scanner unit 2 Defective DC controller PCB Replace the DC controller PCB 158 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action Shee PRIH f Note 54 01 procedure CLJ 9500 The printer 54 errors 1 Check that all of the indicate sensor abnormalities Sensor abnormalities are caused by failed or blocked sensors or sensors reporting results outside an expected range Some 54 errors do not stop the printing process and are only noted in the event log but not on the control panel description 00 ITB misalignment check the event log for a 4 27 error and cycle power to recover 01 environmental temperature sensor output is abnormal appears only in the event log 05 OHT sensor failure appears only in the event log 06 density sensor failure environmental requirements are met Turn the printer off and then turn the printer on again Check connector K3013 on the temperature humidity sensor intermediate connector J3085 and connector J807 on the T driver PCA Replace the temperature humidity sensor see the service manual for details Replace the T driver PCA
164. er Do not remove the firmware DIMM in slot J1 8 Remove all ElO devices from the printer 9 Turn the printer on 120 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 10 If the error no longer exists install each DIMM and EIO device one ata i time making sure to turn CLJ 3500 3700 CLJ 4600 the printer off and then on CLJ 5500 as you install each device 11 Replace a DIMM or EIO device if you determine that it causes the error 12 Reconnect all cables that CLJ 8500 8550 connect the printer to the network or computer continued 13 If the error persists replace the firmware DIMM 14 If the error persists replace the formatter and calibrate the printer ENWW Troubleshooting by using control panel messages 121 Table 2 14 Numerical error messages continued Message Description Action LAS f A critical formatter firmware CLJ 9500 error occurred that caused the processor on the formatter to cease operation Note Unique subcodes are constructed by creating a unique error of an 8 bit component ID XX and an 8 bit component specific error YY The component ID and component specific error are useful in determining which part of the firmware failed Note The printer 49 errors are usually not fixed by replacing the formatter 1 Turn the printer off and the
165. er is necessary 2 Defeat the front door interlocks and check the secondary transfer roller for correct up and down movement 3 Check for continuity from the secondary transfer assembly high voltage contacts to the high voltage power supply 4 Check connector J3036 on the registration motor M11 and connector J117 on the DC controller 5 Check the four lift arms on the secondary transfer assembly for bonds or damage that might inhibit correct movement up Repair or replace the lift arms if necessary 6 Check the secondary transfer clutch CL3 for correct functionality and check connectors J3030 J3026 and J121 on the DC controller 7 Replace the secondary transfer assembly ENWW Troubleshooting by using control panel messages 93 Table 2 13 Alphabetical printer messages continued Message Description Action alternates with The transfer unit is either not installed or not correctly installed in the printer 1 Insert the transfer unit or make sure the installed transfer unit is fully seated 2 Press HELP for detailed information 3 Press UP ARROW and Down ARROW to step through the instructions 4 lf the error persists verify that the ETB connectors J36 and J38 on the ETB and J1111 on the DC controller PCB are good Replace connectors as necessary 5 Replace the ETB 6 Replace the DC controller PCB Calibrate the printer after replacing the DC control
166. erify that the feed rollers are advancing the paper If the rollers do not rotate check the connections at the pickup assembly and the controller PCA in the 2 000 sheet input unit 5 lf the rollers rotate and drop down but do not advance the paper replace the feed and separation rollers by using the maintenance kit 6 If the rollers do not rotate or do not drop down replace the pickup assembly 7 Ifthe problem persists replace the VTU which includes PS31 58 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action There is a jam inthe 2 000 1 Open the VTU and i i sheet input tray remove any media Check the event log n 2 Verify that the paper entry message These ree ps message sensor PS31 moves instructions are for ene freely event logimessage X description 3 Verify that the feed 1 Page stays too long at the separation and pickup paper entry sensor PS31 rollers are correctly B Page stays too long at the seated paper exit sensor PS32 4 If the problem persists open the VTU and override the VTU closed sensor PS35 Perform a paper path test from the 2 000 sheet input unit and verify that the feed rollers are advancing the paper If the rollers do not rotate check the connections at the pickup assembly and the controller PCA in the 2 000 sheet input unit 5 Ifthe rollers rotate and drop down
167. erting or removing DIMMs to avoid damaging them Remove the DIMM and reinstall it to make sure that it is correctly installed Make sure that a supported DIMM is installed 3 Move the DIMM to a different DIMM slot If the DIMM works in a different slot then DIMM slot 1 is malfunctioning Many of the first printers of this model were shipped with an 8 MB flash DIMM in DIMM slot 1 If the printer has an 8 MB flash DIMM in DIMM slot 1 then replace the DIMM The 8 MB flash DIMM will not work in any DIMM slot other than DIMM slot 1 To continue printing remove the DIMM from DIMM slot 1 48 Chapter 2 Service and troubleshooting ENWW Table 1 Accessory error secondary messages CLJ 2500 continued 53 x2 zz Printer DIMM Slot 2 1 Remove the DIMM and error reinstall it to make sure that it A problem exists with the DIMM in is correctly installed on DIMM slot 2 2 Make sure that a supported Oe DIMM is installed oO CAUTION l 3 Move the DIMM to a different You must turn off the printer DIMM slot If the DIMM before inserting of sea works in a different slot then DIMMs to avoid damaging them DIMM slot 2 is malfunctioning 4 To continue printing remove the DIMM from DIMM slot 2 53 x3 zz Printer DIMM Slot 3 1 Remove the DIMM and error reinstall it to make sure that it A problem exists with the DIMM in is correctly installed Ae DIMM slot 3 2 Make sure that a supported Oo DIMM is
168. es in a pattern that indicates the problem see Table 2 64 for an interpretation of the LED patterns 4 To stop the test set the power supply switch to the operational mode and set the DIP switches on the controller PCA to the OFF position see Table 2 63 Open tray 4 and remove any media from the paper path Tray 4 sensor test This test manually activates the sensors on tray 4 to test if they are working correctly 1 Set the DIP switches on the controller PCA for sensor test mode 2 For each paper sensor open tray 4 remove the metal spring that holds the sensor unit in place secured by 1 screw pull out the sensor unit 3 To set the power supply switch to the diagnostic mode pull the blue power supply switch outward 4 To manually activate each sensor press it in with your finger When you activate the sensor the bottom service LED on the controller PCA illuminates When you release the sensor the LED goes dark If the LED does not illuminate a problem exists with the sensor Replace the corresponding FRU 5 To stop the test set the power supply switch to the operational mode and set ENWW Troubleshooting tray 4 CLJ 9500 283 the DIP switches on the controller PCA to the OFF position see Table 2 63 Tray 4 light pattern interpretation If tray 4 is working correctly it picks up media from the tray and feeds it to the printer and the bottom service light flashes regularly every 0 5 second Table
169. es interface configuration information Press MENU until printer control panel display Press ITEM until display 3 Press SELECT to print the configuration page Note If the printer is configured with EIO cards for example an HP JetDirect Print Server an additional configuration page will print that provides interface configuration information 32 Chapter 2 Service and troubleshooting ENWW Table 2 4 Printing a configuration page Product Instructions CLJ 8500 Press MENU until appears on the CLJ 8550 printer control panel display Press ITEM until appears on the display 3 Press SELECT to print the page To print a continuous configuration page 1 Press MENU until printer control panel display Press ITEM until appears on the display 3 Press SELECT to print the page Note Press CANCEL JOB to stop printing The printer will print all of the pages in the buffer before stopping CLJ 9500 1 Press SELECT to open the menus Use UP or DOWN to scroll to Information Menu and then press SELECT Use UP or DOWN to scroll to Print Configuration and then press SELECT The configuration page prints The HP Jetdirect network configuration page also prints 4 Press PAUSE RESUME to close the menus Shortcut method Press 2 and then press 2 again on the printer control panel Demonstration page Use this page to simulate printing a color image If the image print quality is poor pr
170. es staus indicators 4 UP button 11 Attention light red 5 SELECT button 12 Data light green 6 Numeric keypad 13 Ready light green 7 CLEAR button 14Cancel job button ENWW Using the control panel 7 Setting the control panel display language Note This section only applies to products that have a control panel display Product CLJ 2500 Procedure This product does not have a control panel display CLJ 3500 CLJ 3700 1 2 Press MENU Press the DOWN ARROW to highlight and then press SELECT Press the DOWN ARROW to highlight and then press SELECT Press the DOWN ARROW to highlight i and then press SELECT Press the UP ARROW or DOWN ARROW to select the appropriate language and then press SELECT to set the selection Press MENU CLJ 4500 CLJ 4550 Press and hold SELECT at the printer control panel while turning the printer on Continue holding SELECT until Ge in English appears on the control panel display and then release the SELECT button When appears on the control panel display press VALUE repeatedly until the appropriate language appears Press SELECT to save the language selection An asterisk appears next to the selected language Press GO After the printer warms up REE appears on the control panel display in the selected language Note If the message does not appear in the language that you selected press the printer standby button power switch and repeat
171. essages continued Message Description Action CLJ 4500 4550 The fusing motor M1 drives the fusing assembly the paper transport web assembly the ITB lift mechanism the transfer roller the transfer roller lift mechanism and the face down output delivery drive assembly A 50 7 fuser error appears when PS6 detects no motion within the fuser Photosensor PS6 is the fusing unit pressure switch 1 Turn the printer off and on to reset the printer N Remove the left side cover of the printer Verify that the fusing motor M1 connector is seated firmly into J102 of the feed PCB Ensure that the connector at J110 of the feed PCB is firmly seated this connector contains the wiring for PS6 which provides fuser motion feedback o Note Closely inspect the mechanical linkage The gears along the gear drive path can bind the gears which will prevent M1 from rotating 4 Ifthe error persists observe the drive shaft of M1 while turning on the printer If this shaft does not rotate the failure is related to the motor drive circuitry Refer to the printer wiring diagram to verify that connectors J102 and J106 of the feed PCB are firmly seated If the error persists replace the fusing motor and the feed PCB in sequence ENWW Troubleshooting by using control panel messages 131 Table 2 14 Numerical error messages continued Message Description Action
172. ets to zero when the fuser is replaced and the user selects the choice to reset the fuser count Allows you to update the serial number if you replace the formatter If you replace the formatter this item allows you to set the date to the date the printer was first used rather than the date the new formatter was installed If the customer uses default paper size of A4 used in Europe this item allows you to reset the default if you replace the formatter ENWW Service mode functions 255 Table 2 52 Service menu items continued Product Service menu items CLJ 8500 e menu is provided to replace CLJ 8550 values that might be lost when a formatter board or control board is replaced in the field Serial number Formatter number Total page count Color page count Duplex count Transfer life left Fuser life left Engine setting 1 registration values are located on a sticker inside of the front of the printer Engine setting 2 same as above CR paper size cold reset Clear event log F menu is provided for mendecaiind and field service personnel to perform specific diagnostic tests on the formatter board and its related components Execute tests Fault setting determines how the printer will perform when an error is encountered ROM CRC memory test DRAMM DIM memory test IDE ASIC formatter IDE ASIC test Disk hard disk test VX ASIC formatter VX ASIC
173. f it Aw is temporarily full is installed and then perform a Oo cold reset see page 264 Perform a NVRAM init see page 258 Accessory error secondary messages CLJ 2500 EIF 2 E 14 Orme iv SOR TTA If the printer has an Accessory error the Attention light Ready light and Go light are blinking press and hold GO and CANCEL JOB simultaneously to see the secondary error message You can also view the embedded Web server which provides a text message that corresponds to the error and its secondary light pattern ENWW Troubleshooting by using control panel messages 47 Table 1 Accessory error secondary messages CLJ 2500 Message Description Solution 8x yyyy EIO error 1 Remove the print server card A problem exists with the print and reinstall it to make sure server card that it is correctly installed 2 Make sure that a supported Oo CAUTION print server card is installed D You must turn off the printer 3 To continue printing remove before inserting or removing the print server card to avoid damaging the print server card the print server card from the EIO port and connect a parallel or USB cable You must change the port or reinstall the software If the print server card still is not working replace the print server 53 x1 zz Printer DIMM Slot 1 error A problem exists with the DIMM in DIMM slot 1 CAUTION You must turn off the printer before ins
174. fusing No Connect the connector fusing assembly connected securely securely assembly Connector Is connector J222 on the dc No Connect the connector de controller controller PCB connected securely Yes Replace the dc controller PCB PCB E814 CLJ 8550mfp A specific number of copies have been counted after the photosensitive drum end of life warning has been issued Table 2 50 Cause and solutions for E814 error CLJ 8550mfp Cause Checks Action Drum Replace the drum cartridge Is the Yes End cartridge problem corrected No Replace the dc controller PCB E903 CLJ 8550mfp The error shown on the touch screen display is in the side HCI See the CLJ 8550mfp service manual This error indicates one of three problems 1 An error has been detected in the paper deck lifter motor 2 The lifter upward movement takes longer than the specified time 3 The paper level change time is in excess of a specific value while the lifter is moving up E999 CLJ 8550mfp A timing problem has occurred with the copy module Power cycle the unit to alleviate the problem ENWW Troubleshooting by using control panel messages 247 Service mode functions In service mode you can modify page counts and certain registration values for the printer Note The CLJ 2500 does not have a control panel display Set or modify service mode information by using the following PUL commands from the MS
175. g for the pages to be reloaded so it can print the second side _ Reload the pages 2 If the printer does not begin printing after the pages have been reloaded press GO Someone is trying to print by Source tray and there is no paper in the selected tray e Add paper to the selected tray to print from it e Press GO to try to print from another tray The print image is larger than the size of media in the tray Load the correct size media and press Go The printer has an Attention with Ability to Continue error 1 Press GO for the printer to attempt to recover from the error and print whatever data it can If successful the printer completes the job while the Ready light blinks 2 If unsuccessful the Attention with Ability to Continue message continues to appear Perform one of these steps Press and hold GO and CANCEL JOB simultaneously to see a secondary light pattern See Attention with Ability to Continue secondary messages CLJ 2500 on page 44 Press CANCEL JOB to cancel the print job If the problem has been resolved the printer returns to the Ready state Ready light on 42 Chapter 2 Service and troubleshooting ENWW Table 2 10 Printer Status light messages CLJ 2500 continued printing and pressing any button has no effect whe Message Description Solution Accessory error An Press and hold GO and CANCEL JOB error has occurred with
176. ge Description Action The printer has detected that the transfer drum is not installed All doors must be closed for the printer to detect the transfer drum If the right upper cover interlock is defeated this error will occur unless the density sensor is covered with paper 1 Install the transfer drum before attempting to print 2 Take the transfer drum out and reinstall it 3 Make sure that the transfer drum is installed Ifthe transfer drum is not already installed install the transfer drum Ifthe transfer drum is already installed turn the printer off verify that the transfer drum is in the correct position and turn the printer on again 4 Reconnect connector J1101 on the density sensor PCA intermediate connectors J75 and J46 and connector J206 on the controller board 5 Measure the voltage across connector J704 1 24 VAR and GND on the density sensor PCA after the printer is turned on If the voltage is not about 24 V replace the density sensor PCA 6 Replace the controller board 92 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 9500 The second transfer roller is not installed or a problem occurs when it is lifted into position 1 Make sure that the secondary transfer roller is installed correctly Reseat the secondary transfer roll
177. ge 263 2 If the message persists verify that the cables are seated correctly and the connectors J32 on the color registration detection unit and J1119 on the DC controller are making good contact 3 If alaser scanner unit has recently been replaced make sure it has been installed correctly If it is installed correctly replace it with a new one 4 Replace the color registration detection unit 5 If the message persists replace the DC controller PCB Calibrate the printer after replacing the DC controller alternates with CLJ 3500 3700 The printer received data and is waiting for a form feed When the printer receives another file the message should disappear Press to continue CLJ 4500 4550 The printer has received and processed data and is waiting for a form feed Press CANCEL JOB and resend the last page of the job making sure that a form feed is sent with it or press Go to feed a new sheet of media through the printer 70 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 4600 5550 The printer has received and processed data The printer is waiting for a form feed Press Go D CLJ 8500 8550 The printer received data and is waiting for a form feed When the printer receives another file the message should disappear P
178. ge change to about 24 V Yes Replace the heat discharge between connectors J645 3 FAN3ON discharge fan 3 fan 2 on the main relay PCB and J645 1 GND immediately after the copier is turned on Main relay Does the voltage change to 24V Yes Replace the main relay PCB between connectors J641 1 24 VB PCB and J641 4 GND on the main relay PCB immediately after the copier is turned on The dc Is the dc power present in the printer No See the CLJ 8550mfp power unit service manual printer unit Yes Replace the dc controller PCB 244 Chapter 2 Service and troubleshooting ENWW E808 CLJ 8550mfp The fusing drive circuit power unit is faulty This error occurs when the fusing heater safety circuit has detected a fault in the upper and lower fusing heaters Table 2 45 Cause and solutions for E808 error CLJ 8550mfp printer unit printer side Is the problem corrected The fusing heater drive circuit or the fusing heater safety circuit is faulty Cause Issue Solution Fusing Replace the fusing assembly Is the Yes End assembly problem corrected Powersupply Replace the power supply on the Yes End No Replace the dc controller PCB E809 CLJ 8550mfp The power supply cooling fan FM4 used for the area around the copy module main power supply is faulty This error occurs when the fan error signal FANERR goes to zero 0 for 1 5 seconds or more while the fan is ro
179. ge power supply J210 and J202 on the high voltage power supply J608 and J612 on the P driver PCA and J806 on the T driver PCA ENWW Troubleshooting by using control panel messages 195 Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 9500 continued 6 Replace the print cartridge and the drive linkages if necessary Note Make sure that the print cartridges when stored were not exposed to high temperatures 7 Check connector 814 on the T driver PCA 8 Check the color appropriate connectors K J3046 near the motor C J3047 near the motor M J3048 near the motor Y J3049 near the motor 9 Replace the T driver PCA see the service manual for details 10 Replace the DC controller PCA see the service manual for details Fuser motor errors 1 Turn the printer off and then turn the printer on again to clear the error 2 Remove and check the fuser for jammed media and damaged drive gears 3 Perform a motor diagnostics test 196 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 4 Check connector J3035 at the fuser motor and connector J116 on the DC controller PCA alternates with CLJ 9500 5 Check the fuser drive train continued for correct movement Replace the fuser drive train
180. ge switching guide _ Yes Replace the drum cartridge defective cartridge switching guide Connector Are connector J209 on the dc controller No Connect the connectors memory PCB and relay connectors J47 and J48 securely inside the connected securely drum cartridge Memory Replace the drum cartridge Is the Yes End inside the problem corrected No Replace the dc controller drum PCB cartridge E812 CLJ 8550mfp This error occurs when the intermediate transfer drum ITD home position is not detected within a specific time about 10 seconds Table 2 48 Cause and solutions for E812 error Cause Issue Solution Intermediate ls the intermediate transfer drum ITD No Set the drum correctly and transfer drum set in the printer correctly turn the power off and then on ITD Yes See E020 CLJ 8550mfp Density on page 223 sensor 246 Chapter 2 Service and troubleshooting ENWW E813 CLJ 8550mfp This error occurs when both the upper fusing roller temperature detection signal FXTHU and the lower fusing roller temperature detection signal FXTHL indicate 10 C 14 F or less Table 2 49 Cause and solutions for E813 error CLJ 8550mfp Cause Checks Action Fusing Is the fusing assembly set in the No Set the fusing assembly assembly printer correctly correctly and turn the power off and then on Connector Is connector J26 of the
181. he density calibration to fail Check the right door actuated cleaning mechanism for correct functionality Selec and TEST on the control panel to check correct formations of the calibration swatches on the ITB If the swatches are light or missing a color check the T1 components image drum and print cartridge for the missing or light color Also check for malformed or too light swatches stray toner from cleaning failures and ITB damage Check connector J3014 at the density sensor intermediate connector J3072 and J3080 and connector J808 on the T driver PCA Replace the density color registration sensor assembly see the service manual for details ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 continued 17 cyan CPR sensor the engine cannot detect the cyan CPR pattern on the ITB 18 black CPR sensor the engine cannot detect the black CPR pattern on the ITB 20 CPR sensor output is abnormal or the engine cannot detect any of the CPR patterns on the ITB Note Errors 21 through 24 indicate a toner concentration sensor failure 21 yellow image drum t d ratio sensor 22 magenta image drum t d ratio sensor 23 cyan image drum t d ratio sensor 24 black image drum t d ratio sensor 27 ITB misalignment sensor Note 27 ITB misalignment sensor appears in the event log but it might ap
182. he environment sensor 3 The DC controller PCB is defective Replace the DC controller PCB 54 05 Media sensor error 1 Perform the steps for error 54 32 below 2 Replace the media sensor 3 Replace the DC controller 154 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action p Control panel and event log 54 06 CLJ 3500 3700 message 54 11 continued 21 yellow toner remaining 54 12 sensor error 54 13 22 magenta toner 54 14 remaining sensor error 23 cyan toner remaining sensor error 24 black toner remaining 2 The DC controller is Perform a Calibrate Now procedure sensor error defective Replace the DC 31 media sensor controller PCB calibration failure 54 15 Event log only message 54 16 32 media sensor is not 54 17 calibrated event log only 54 18 54 20 Color misregistration sensor 33 0X Scanner Beam abnorm aie Detect adjustment abnormality warning X is the h The connectors between scanner number the color misregistration 1 yellow magenta scanner sensor CPR and the DC 2 cyan black scanner controller PCB are not connected correctly Reseat the color misregistration sensor CPR connectors J505A J505B and the DC controller PCB connector J1012 2 Faulty color misregistration sensor CPR Replace the color misregistration sensor CPR 3 Faulty DC controller PC
183. he SELECT key to enter the value Setting margin numbers CLJ 4500 4550 only The top margin number is not tray dependent like the left side margin You can print the registration page from whichever tray has paper Using a ruler measure from the top edge of the paper to the series of lines Find the line that is 13 mm 0 5 inch away from the edge of the paper Setting the top margin registration value 1 Press the ITEM key to scroll through the Service menu until top margin is displayed 2 Press the MENU key until the number to be entered is displayed 3 Press the SELECT key to enter the number Print another registration page and the number just entered will align with the arrow and be bold The left side margin setting is tray dependent Tray 1 has its own number while Trays 2 and 3 are combined The procedure is the same as the top margin with one exception The page must be printed from the tray that will be adjusted ENWW Hard disk initialization 267 Printing from Tray 1 1 Press the ITEM key until F displayed i default is 2 Press the SELECT key 3 Measure from the left side of the paper to the lines and find the line that is 13 mm 0 5 inch from the edge of the paper lf the number for the line is different then the current number 1 Press the ITEM key until 7 2 Press the VALUE key to change the number to the number required 3 Press the SELECT key Printing from Tray 2 and 3 1 Press th
184. he error Partially remove the ITB 3 Turn the fly wheel on the right side to check the ITB for damage and correct movement Check the drive linkages from the ITB motor for damage Replace any damaged hardware 202 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action 4 Reseat the ITB and raise the green lever alternates with 5 Use the hardware diagnostic tools from the CLJ 9500 control panel to test the continued ITB motor for correct functionality 6 Remove and reseat the secondary transfer roller and the cleaning blade toner collection bottle 7 Check connector J1 on the low voltage power supply J210 and J202 on the high voltage power supply J608 and J612 on the P driver PCA and J806 on the T driver PCA 8 PCA malfunction especially if the printer was recently serviced 9 Make sure that the FFC is centered and that it is completely inserted into the connector Replace the FFC if it is damaged 10 Check connector J3098 at the motor and connector J611 on the P driver PCA 11 Check FFC connector J104 on the DC controller PCA and FFC connector J601 on the P driver ENWW Troubleshooting by using control panel messages 203 Table 2 14 Numerical error messages continued Message Description Action So PRINT T2 clutch error alternates with 1 Turn the printe
185. he lower rear door rear output bin when printing on heavier media 7 Press SELECT to resume printing CLJ 3500 3700 jam inside the upper rear door Note The message i Can appear on the printer control panel if the upper rear door is open Make sure the upper rear door is closed when printing Remove any media that is visible in the top output bin Open the upper rear door Remove any media Close the upper rear door If no media is visible open the lower rear door rear output bin oor WN Press down on the green levers and remove the media Return the green levers to the up position after removing the page 7 Close the lower rear door rear output bin foe If printing does not resume press SELECT ENWW Jams 297 CLJ 3500 3700 jam inside the fuser area 1 Open the lower rear door rear output bin Note Make sure the green pressure levers are not in the down position If the green pressure levers are down they can cause a jam message to appear on the printer control panel 2 Ifthe media is visible press down on the green levers and remove the media Return the green levers to the up position after removing the media and close the lower rear door rear output bin 3 If the paper is not visible turn the printer off WARNING The fuser will be hot Wait 10 minutes before proceeding 4 Slide out the lower rear door rear output bin tray extender 5 Remove the lower rear door rear
186. hes Reference CLJ 3500 3700 component SL1 Tray 1 pickup solenoid SL2 Tray 2 pickup solenoid pickup and feed assembly SL4 Secondary transfer roller engaging solenoid SL5 Duplex feed solenoid CLI Registration clutch CL2 K development clutch image drive unit CL3 Developing engaging clutch developing engaging drive unit 354 Chapter 5 Illustrations ENWW Figure 5 9 CLJ 3500 3700 location of motors and fans Reference CLJ 3500 3700 component M1 Feed motor M2 Delivery motor M3 Drum motor M4 Developing motor M5 Primary transfer roller engaging motor FAN1 Exhaust fan ENWW Major components 355 Figure 5 10 CLJ 3500 3700 location of PCBs Reference CLJ 3500 3700 component 1 DC controller PCB Memory controller PCB High voltage power supply PCBs Low voltage power supply PCB Formatter PCB OJJ AJOJN Control panel PCB 356 Chapter 5 Illustrations ENWW CLJ 4500 4550 major components O Ex eS NO lt LEP Figure 5 11 CLJ 4500 4550 assembly location diagram 1 of 2 ENWW Major components 357 Figure 5 12 CLJ 4500 4550 assembly location diagram 2 of 2 ENWW 358 Chapter 5 Illustrations D PS3104 amp PS3105 PS3001 A Figure 5 13 CLJ 4500 4550 sensor locations ENWW Major components 359 This table corresponds
187. hp LaserJet quick reference service guide color service volume IlI hp color LaserJet quick reference service guide volume III March 2004 edition 2004 Copyright Hewlett Packard Development Company LP Reproduction adaptation or translation without prior written permission is prohibited except as allowed under copyright laws The information contained herein is subject to change without notice The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be constructed as constituting an additional warranty HP shall not be liable for the technical or editorial errors or omissions contained herein Part number 5851 1893 Edition 2 3 2004 Trademark credits Adobe and PostScript are registered trademarks of Adobe Systems Inc which may be registered in certain jurisdictions Microsoft Windows and Windows NT are U S registered trademarks of Microsoft Corporation UNIX is a registered trademark in the United States and other countries licensed exclusively through X Open Company Limited PANTONEG is a registered trademark of Pantone incorporated Ordering other manuals This HP Color LaserJet Family Quick Reference Service Guide has been created to help the HP LaserJet service engineer quickly troubleshoot common printer problems Although this reference is intended to provid
188. ia ccm printer is out of media Attention error The 1 Clear the jam see pages See CLJ printer has a jam 2500 jams on page 293 lt b 2 If the location of the jam is not apparent check the embedded Web server to find the jam location If the jam was under the imaging drum toggle the registration sensor to check its movement and replace the registration sensor if it does not move freely If the jam was in the fuser area toggle the fuser exit sensor to check its movement and replace the fuser exit sensor if it does not move freely e Thetopcoverhas Pressing GO returns the printer to the been opened and Ready state If you do not press Go then closed the printer automatically returns to the Ao e You pressed Ready state after approximately 10 Oo ROTATE seconds Fer CAROUSEL e Pressing ROTATE CAROUSEL brings URE another print cartridge to the top position ENWW Troubleshooting by using control panel messages 41 Table 2 10 Printer Status light messages CLJ 2500 continued Message Description Solution A manual feed job was 1 Load media into tray 1 aad 1S eles is 2 Ifthe printer does not begin printing Vere iha prn T a ngaio after the pages have been reloaded AND epee mega press GO Or just press GO to try to Oo print from another tray if another tray is installed The printer has finished printing the first side of a manual duplex job and the printer is waitin
189. if any lower side problems are found thermal switch open circuit Upper or Is the upper or lower thermistor in No Mount the thermistor correctly lower even contact with the upper lower thermistor fusing roller Upper or Is the upper or lower thermistor Yes Clean the area of contact with lower soiled the upper or lower fusing roller thermistor Connector Are connector J222 on the dc No Connect the connectors controller PCB and connector J26 of securely the fusing assembly connected securely ENWW Troubleshooting by using control panel messages 219 Table 2 15 Cause and solutions for E000 E003 errors CLJ 8550mfp Power Replace the power supply of the Yes End supply printer unit Is the problem corrected No Replace the dc controller printer PCB unit CAUTION If E001 or E003 is indicated be sure to discharge the error memory capacitor C259 on the dc controller PCB after troubleshooting the problem as it can contain error memory Short out JP201 on the dc controller PCB to discharge C259 see the Printer Unit Service Manual E001 CLJ 8550mfp The fusing assembly has overheated This error occurs when the fusing temperature during standby or copying exceeds 230 C 446 F Table 2 16 Cause and solutions for E001 error CLJ 8550mfp Cause Issue Solution Upper With the fusing assembly removed Yes Check the wiring from thermistor measure the resistance betw
190. if necessary 6 Replace the fuser motor see the service manual for details 7 Replace the DC controller PCA see the service manual for details Image drum motor errors 1 Gently shake the print cartridge reseat it and turn the printer on 2 Turn the printer off and then turn the printer on again to clear the error 3 Remove and check the indicated image drum and check the engine for damaged drive linkages 4 Reseat the image drum 5 Replace the image drum and the drive linkages if necessary 6 Check connector J1 on the low voltage power supply J210 and J202 on the high voltage power supply J608 and J612 on the P driver PCA and J806 on the T driver PCA ENWW Troubleshooting by using control panel messages 197 Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 9500 continued Note Make sure that the print cartridges when stored were not exposed to high temperatures 7 Check FFC connectors J104 and J105 on the DC controller PCA and connectors J601 and J616 on the P driver PCA especially if the printer has been serviced recently 8 Make sure that the FFC is centered and that it is completely inserted into the connector Replace the FFC if it is damaged 9 Check the color appropriate connectors K J610 and J613 on the P driver PCA J701K for the encoder and J3097 on the
191. image drums 6 Intermediate transfer belt ITB assembly T Secondary transfer assembly 8 Tray 1 pickup roller 9 Separation pad 10 Pre registration roller 11 Feed roller 12 Separation roller 13 Pickup roller 14 Registration paper sensor flag 15 Registration roller 16 Secondary transfer roller T2 17 Fusing front paper sensor flag 18 Fusing roller 19 Pressure roller 20 Fusing delivery roller 21 Duplex deflector 22 Face up deflector 23 Primary transfer roller T1 24 Photosensitive drum 25 Developing cylinder 26 Primary charging roller ENWW Major components 381 Figure 5 34 CLJ 9500 location of motors and fans 382 Chapter 5 Illustrations Reference CLJ 9500 component Reference CLJ 9500 component 1 Delivery fan 9 ITB motor 2 Fuser motor 10 Drum motor 3 Fuser fan 11 Developing motor 4 Upper right fan 12 Pickup roller up down motor 5 Ozone fan 13 Lifter motor 6 Registration motor 14 Front face up delivery fan 7 Pickup motor 15 Rear face up delivery fan 8 Print cartridge motors ENWW 11 10 Figure 5 35 CLJ 9500 location of switches solenoids and clutches Reference CLJ 9500 component Reference CLJ 9500 component 1 Secondary transfer clutch 7 Tray 1 pickup solenoid 2 Registration clutch 8 Tray 3 paper length detection switch 3 Pre registration clutch 9 Left door switch 4 Right door switch 10 Tray 2 pa
192. in fusing area Check the short Check the Tray 1 area Check the fuser assembly output assembly and entire paper path duplex unit 3 13 23 Irregular media jam in the paper 10 13 5 Jam in fusing area Check the path Check the Tray 1 area Check the fuser assembly output assembly and entire paper path duplex unit 4 13 21 Door open jam Check the rear 11 13 5 Jam door duplex cover and rear output alternates with CHECHE TH door a Check the middle 13 20 Jam in paper feed area Check front drawer Check and pull out the the entire paper path fuser 5 13 13 Jam in duplex paper feed area 12 13 5 Jam Check in rear of drawer Inspect the rear of the duplex unit and Check the rear of the middle front the duplex tray drawer Reseat the transfer roller 6 13 12 Jam in duplex paper feed area 13 13 1 Jam in input feed area Check the Inspect the rear of the duplex unit and input trays and duplex unit the duplex tray 7 13 11 Jam in duplex unit Inspect the 14 13 2 Media did not clear the input sensor in time ENWW Jams 301 CLJ 4600 5500 jam locations Jams occur in the areas shown in Figure 3 4 Jam messages correlate with these areas For instructions to clear jams see the following pages
193. in the printer 2 MaKe sure ne users correctly seated in its slot 3 Reseat the fuser Check the connector J5013 between the fuser and the printer Replace it if damaged 4 Turn the printer off and remove the fuser Measure the resistance between the fuser connectors J5013LA 2 MAINTH and J5013LA 1 GND If it is not within the range of 330k to 50k ohms at ambient temperature replace the fuser 5 Measure the resistance between the fuser connectors J5013L 2 FSRH and J5013L 1 FSRN with the fuser removed If it is not within the range of 12 to 52 ohms at ambient temperature replace the fuser 6 Replace the DC controller PCB ENWW Troubleshooting by using control panel messages 87 Table 2 13 Alphabetical printer messages continued Message Description Action The printer has detected that the fuser is not installed 1 Install the fuser and verify that it is working correctly 2 Reconnect connector J26 on the fuser 3 Reconnect connector J222 on the controller board 4 If the message persists replace the controller board 88 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The printer has detected that the imaging drum is not installed All doors must be closed for the printer to detect the imaging drum 1 Install the imagi
194. ination If the sensors option is ON you can see the paper path sensor status when the page is printing The media jam sensor status is reported if is selected If it is not selected the normal error message appears and all errors are entered into the event log 1 Press v to open the menus 2 Use A or YW to scroll to 3 Use A or V to scroll to 4 Use A or to select the input tray that you want to test the output bin the duplexer if available and the number of copies Press w after you set the value for each location and then press v and then press v Note If is selected the printer enters a special diagnostic mode If you are in the diagnostic mode the sensor status appears and the message will not appear as an option 5 Ifthe option is selected the letters through appear on the control panel The values are explained in the following list f Tray 2 feed A amp Pre fuser amp Tray 2 feed B H Fuser outlet Tray 3 feed A I Duplex reverse Tray 3 feed B J Fuser feed E Preregistration Face down output e F Pre T2 6 After selecting the last option use A or W to scroll to and then press v Perform the following steps to exit the test if is selected 1 Press the CanceL Jos button 5 and then press v 3 The printer will reboot 292 Chapter 3 Jams ENWW Jams CLJ 2500 jams Occasionally paper or other pr
195. ing PCB are routed to J201 on the developing PCB to J1017 on the DC controller PCB CLJ 3500 3700 CLJ 8500 8550 The printer is resetting the printer s factory defaults The printer is in the process of completing a cold reset When the reset is completed the printer returns to the ready state but remains offline For CLJ 3500 3700 printers no action is necessary For CLJ 8500 8550 printers reset the ElO type and configure the printer before bringing the printer online For more information about factory defaults and configuring the printer control panel see the service manual alternates with CLJ 9500 The ROM disk had a critical failure and cannot be used Turn the printer off and then turn the printer on again to clear the error 102 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The requested operation No action is necessary i could not be performed You alternates with might have attempted an illegal operation such as CLJ 9500 trying to download a file to a non existent directory The ROM disk reached its Delete files and then try Li maximum capacity again or turn the printer off alternates with and then turn the printer on P again to delete all of the files on the device Delete files COE e500 by using HP Web Jetadmin another software utility or
196. ins on the bottom row of text four separate blocks of numbers The first block is for cyan second for magenta third for yellow and the last is for black If the numbers are near zero no calibration was done e Consumables of Life Remaining CLJ 8500 and CLJ 8550 only Lists the percentage of the maximum rated life remaining for the transfer kit fuser kit and drum kit ENWW Printing information pages 31 e Color Adjust CLJ 8500 and CLJ 8550 only Lists the number of pages that have been printed since the last manual color adjustment To print a configuration page Table 2 4 Printing a configuration page Product Instructions Press GO and CANCEL JOB simultaneously The supplies status page also prints If you have an HP Jetdirect print server card installed the HP Jetdirect page also prints Note You can also print a configuration page in the embedded Web server or from the HP Color LaserJet 2500 Series Toolbox Press SELECT to open the Press the DOWN ARROW to highlight Press SELECT to select t Press the DOWN ARROW to highlight 5 Press SELECT to select The message appears on the display until the printer finishes printing the configuration page The printer returns to the F state after printing the configuration page Note If the printer is configured with EIO cards for example an HP Jetdirect Print Server or an optional hard disk drive an additional configuration page will print that provid
197. installed oe eee 3 Move the DIMM to a different eo must turn Oi tno printer DIMM slot If the DIMM ele inserting or removing works in a different slot then DIMMs to avoid damaging them DIMM slot 3 is malfunctioning 4 To continue printing remove the DIMM from DIMM slot 3 ENWW Troubleshooting by using control panel messages 49 Service error secondary messages CLJ 2500 A2 Oe If the printer has a service error Attention light Ready light and Go light are on press and hold Go and CANCEL JOB simultaneously to see the secondary error message You can also view the embedded Web server which provides a text message that corresponds to the error and its secondary light pattern Table 2 12 Service error secondary messages CLJ 2500 Message Description Solution 51 x Bad beam detect error 1 Press GO The page that contains the error will automatically be reprinted 2 Turn the printer off and then Oe on 3 Replace the laser scanner 52 x Scanner error 1 Press Go The page that contains the error will automatically be reprinted 2 Turn the printer off and then Oe on 3 Turn the printer off and then reseat the laser scanner cable o Replace the laser scanner 50 Chapter 2 Service and troubleshooting ENWW Table 2 12 Service error secondary messages CLJ 2500 continued 55 x Engine communication 1 error Turn the printer off and then on Check the co
198. int a demonstration page to make sure that the problem is not related to software communications or file quality ENWW Printing information pages 33 To print a demonstration page Table 2 5 Printing a demonstration page Product Instructions Press GO when the printer is Ready Ready light on and is not printing You can also view this page from the HP Color LaserJet 2500 Series Toolbox 1 Press SELECT to enter the Press the DOWN ARROW to highlight Press SELECT to select Press the DOWN ARROW to highlight Press SELECT to select F Press MENU until 1 appears on the printer control panel display Press ITEM until F 2 appears on the display Press SELECT to print the demonstration page Press MENU until 1 J appears on the printer control panel display Press ITEM until F appears on the display Press SELECT to print the page Press SELECT to open the menus Use UP or DOWN to scroll to Information Menu and then press SELECT Use UP or DOWN to scroll to Print Demo and then press Select Press PAUSE RESUME to close the menus 34 Chapter 2 Service and troubleshooting ENWW Menu map Use the menu map to navigate through control panel menus To print a menu map Table 2 6 Printing a menu map Product Instructions CLJ 2500 The CLJ 2500 does not have a control panel display Note For information about menu items in the embedded Web server see the HP Embedded Web Server for H
199. int cartridge a few times reseat the print cartridge turn the printer off and then turn the printer on again Replace the print cartridge or the drive linkages if necessary Note Make sure that the print cartridges when stored were not exposed to high temperatures 2 Check connector 814 on the T driver PCA 3 Check color appropriate connections near the motor K J3046 C J3047 M J3048 Y J3049 Replace the T driver PCA see the service manual for details oN Oo RA 9 Replace the DC controller PCA see the service manual for details 100 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action This message occurs if you do not have the intermediate transfer belt installed in the printer or if sensor PS5 does not detect the home position marks on the ITB The ITB must be rotating before PS5 is able to detect its home positioning marks Both the ITB and the imaging drum are driven by the drum motor M4 1 Check SW1 to make sure it is operating correctly and make sure the cables are connected 2 Verify that the ITB is installed in the printer 3 If the ITB is installed and seated correctly verify that PS5 is not damaged PS5 is located on the ITB assembly If the sensor appears to be damaged replace the ITB assembly 4 Clean PS5 5 Check all wiring within the ITB drawer
200. int media can become jammed during a print job Causes include the following Input trays are loaded improperly or are overfilled Optional tray 2 or optional tray 3 is removed during a print job The top cover is opened during a print job Too many sheets have accumulated in an output area or blocked an output area The media being used does not meet HP specifications See the user guide for information about print media specifications The environment in which the paper was stored is too humid or too dry See the user guide for information about print media storage specifications Non HP supplies are installed in the printer Jams can occur in these locations Inside the printer In input areas In output areas Find and remove the jam by using the instructions on the following pages If the location of the jam is not obvious look first inside the printer Loose toner might remain in the printer after a jam This problem should resolve itself after a few sheets have been printed ENWW Jams 293 CLJ 2500 to clear jams from inside the printer CAUTION Jams in this area might result in loose toner on the page If you get toner on your clothes or hands wash them in cold water Hot water will set the toner into the fabric 1 Open the top cover 2 Remove the imaging drum by pushing it away from you and lifting it out of the printer Note You cannot reach jams by removing the print cartridges 3 Complete one of these
201. ion E677 E678 E679 CLJ 8550mfp E677 indicates that an error has occurred during the initial communication between the ACC controller PCB and an accessory The error occurs when the ACC controller PCB and the accessory are not ready for communication within four seconds possibly due to a problem in the power supply or when an initial communication error with each accessory has occurred E678 indicates that the communication between the ACC controller PCB and an accessory has been interrupted The error occurs when the accessory is turned off in the middle of communication or when the cable of the accessory has been disconnected in the middle of communication E679 indicates that an error has occurred in the protocol used for communication between the ACC controller PCB and an accessory This error occurs when the read write parity check of data is faulty and communication does not end within a specific time Table 2 40 Cause and solutions for E677 E678 E679 errors Cause Issue Solution Accessories Are the power cables of the No Turn the power off make power accessories and the communication sure that the cables are accessories Cable to the printer unit connected secures and then turn the securely power on Yes Replace the ACC controller PCB 240 Chapter 2 Service and troubleshooting ENWW E710 E711 CLJ 8550mfp These are IPC initialization errors E710 occurs when the IPC sync register f
202. ion about the formatter ENWW Troubleshooting by using control panel messages 119 Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 3500 3700 CLJ 4600 CLJ 5500 CLJ 8500 8550 A critical firmware error has occurred that caused the processor on the formatter to abort operation This type of error can be caused by invalid print commands corrupt data or invalid operations In some cases electrical noise in the cable can corrupt data during transmission to the printer Other causes include poor quality parallel cables poor connections defective EIO devices or home grown programs On rare occasions when the formatter is at fault the error is usually indicated by a 79 Service Error 1 Press CANCEL JOB to clear the print job from the printer memory 2 Turn the printer off and then on 3 Try printing a job froma different software program If the job prints go back to the first program and try printing a different file If the message appears only with a certain software program or print job contact the software vendor for assistance 4 Try a different driver 5 If the message persists with different software programs and print jobs disconnect all the printer cables that connect it to the network or computer 6 Turn the printer off 7 Remove all memory DIMMs or third party DIMMs from the print
203. iption Action CLJ 4600 CLJ 5500 continued 54 20 error Check the connection Replace the color registration detection assembly 54 21 54 22 54 23 or 54 24 error Check the connections Replace the toner level sensing PCB if necessary Replace the DC controller if necessary ENWW Troubleshooting by using control panel messages 153 Table 2 14 Numerical error messages continued Message Description Action CLJ 3500 3700 A printer command error has occurred Note Some messages appear in the event log and some appear on both the control panel and inthe eventlog as identified in the followin list XX Description Event log only messages 01 humidity environmental sensor error 05 media sensor error 06 Dmax density sensor out of range 11 yellow density sensor error 12 magenta density sensor error 13 cyan density sensor error 14 black density sensor error 15 yellow CPR sensor error 16 magenta CPR sensor error 17 cyan CPR sensor error 18 black CPR sensor error 20 CPR sensor error 1 Turn the printer off and then on again 2 For the specific error messages perform the indicated action 54 01 Environment Sensor Abnormality 1 The connector in the environment detection signal line is not correctly connected Reseat the DC controller PCB connector J1015 2 The environment sensor is defective Replace t
204. irmware errors 206 firmware upgrades NVRAM initialization 258 using FTP 13 using HP Web Jetadmin 11 using Internet Explorer 11 using manual download 12 versions supported 10 flash DIMMs error messages 78 formatter DC controller errors 166 diagnostics CLJ 4500 4550 272 errors 119 NVRANM initialization 258 troubleshooting 24 fraud hotline 37 96 FTP firmware upgrades 11 13 fuser errors 51 125 incompatible 79 jams 57 not installed 88 replacing 17 G Go light button accessory error messages CLJ 2500 47 Attention with Ability to Continue messages ENWW CLJ 2500 44 CLJ 2500 locating 2 CLJ 2500 messages 40 CLJ 2500 status 39 CLJ 4500 4550 locating 4 CLJ 8500 8550 locating 6 service error messages CLJ 2500 50 H hard disk failure errors 72 full errors 73 initialization 98 261 multiple not supported 105 write protected 74 heaters CLJ 8500 8550 378 HP color LaserJet 2500 See CLJ 2500 HP color LaserJet 3500 3700 See CLJ 3500 3700 HP color LaserJet 4500 4550 See CLJ 4500 4550 HP color LaserJet 4600 See CLJ 4600 HP color LaserJet 5500 See CLJ 5500 HP color LaserJet 8500 8550 See CLJ 8500 8550 HP color LaserJet 9500 See CLJ 9500 HP Customer Care 398 HP Embedded Web Server 397 HP Jetdirect print servers ElO errors 48 HP Technical Training 398 HP Web Jetadmin firmware upgrades 11 l illustrations components CLJ 2500 346 CLJ 3500 3700 350 CLJ 4500 4550 357 CLJ 4600 364 CLJ 5500 368
205. is correctly installed CLJ 4600 ETB motor error 1 Clean the ETB unit intermediate connector J4017 If the connector is damaged replace it 2 Reconnect the connectors J4022 for the ETB motor J4017 between the ETB and the printer and J4014 on the DC controller PCB 3 If the error persists replace the ETB motor 4 Ifthe error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller 190 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 4600 CLJ 8500 8550 continued Fuser motor error 1 Reconnect the connectors J4030 for the fuser motor and J1002 on the DC controller PCB Replace any damaged parts If the error persists replace the fuser drive assembly If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller Print cartridge motor error 1 Reconnect the print cartridge connector on the DC controller PCB J1013 for cyan J1031 for magenta J1032 for yellow and J1033 for black If the error persists replace the drum drive assembly for the indicated print cartridge If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Troubleshooting by using control panel messages 191 Tabl
206. isplay 3 Press VALUE until appears on the display 4 Press SELECT to initiate the drum test 330 Chapter 4 Print quality ENWW Print density test and color checks Use the configuration page to check the print density of the black primary and process color levels Solid black and color filled areas on the configuration page demonstrate the ability to print at full density In addition to the items listed above the configuration page provides the following information e It helps isolate the problem to the software or the product e It shows that all colors print The following media related items are responsible for many image formation and print quality defects e rough paper e heavy paper e transparencies out of the specified thickness range e paper that has absorbed too much moisture from the atmosphere e the effect of the room environment humidity too high or low Understanding color variations The printed output might not match the computer screen and the colors printed on successive pages might not match While color variations are inherent in this printing method they can indicate changes in the printing environment print media or product components ENWW Image quality 331 Common causes of color variation The following list outlines the major causes of color variations between computers applications and output devices e Halftone patterns produced on monitors and the types of patterns u
207. ke a moment The control panel shows the HP event logo and eventually READY APPEARS 262 Chapter 2 Service and troubleshooting ENWW Calibration bypass CLJ 3500 3700 CLJ 4600 and CLJ 5500 only During certain diagnostic procedures bypass the automatic calibration that is performed whenever the printer is turned on To bypass calibration 1 Turn the printer on and watch the control panel display 2 When the display begins showing the memory count press and hold DOWN ARROW until all three lights on the control panel are lit 3 Press UP ARROW 4 Press MENU CLJ 3500 3700 or PAUSE RESUME CLJ 4600 and 5500 The display should show 5 Press UP ARROW until iis highlighted 6 Press SELECT The printer will skip calibration and then continue its power on sequence Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only Use the following procedure to calibrate the printer whenever you replace the DC controller the ETB the drum drive motors the drum drive gears or a laser scanner Press SELECT to enter the Press DOWN ARROW to highlight Press SELECT to select Press DOWN ARROW to highlight Press SELECT to select F Press DOWN ARROW to highlight Press SELECT to select ON Oo FF QOQON Wait for the printer to calibrate ENWW Hard disk initialization 263 Cold Reset Cold reset clears all data from the print buffer and returns the printing menu and the configuration menu
208. ks with Internet Explorer 5 x and later 1 Before you can use Internet Explorer as an FTP client you need to change a browse setting a In Internet Explorer on the Tool menu click Internet Options b On the Advanced tab select the Enable folder view for FTP sites check box and then click OK Download the firmware image file from the HP website www hp com The firmware image file is located on the Driver Download page for each specific printer model Locate the downloaded file on your computer and run the EXE file to extract the downloaded files The following example uses the HP LaserJet 9000 printer as an example Two files are created in a folder named Ij9000 rfu which is the new firmware file and a README file which explains how to download it to the printer The following instructions are taken from this readme file Open a Windows Explorer window and browse to the folder that contains the RFU file In the URL address text box type the letters FTP type the IP address of the printer and then press ENTER on the keyboard For example type FTP 192 168 0 1 A folder named Port 1 appears in the browser window Drag the RFU file from the Windows Explorer window to the window in Internet Explorer The printer should now indicate that it is performing the upgrade Using HP Web Jetadmin 1 2 Print a configuration page to determine the printer s IP address Go to the main page for HP Web Je
209. l heater connectors J27F 3 HTUH and J27F switch Replace the fuser if upper 4 HTUC on the fusing assembly problems are found thermal side switch open circuit Lower Is there electrical continuity present No Check the lower fusing fusing between connectors J27F 3 HTLH heater and the lower thermal heater and J26F 4 HTLC on the fusing switch Replace the fuser lower assembly side assembly if problem parts are thermal found switch open circuit Connectors Are connector J222 on the dc No Connect the connectors controller PCB connector J26 of the securely fusing assembly and connector J101 of the printer unit power supply connected securely Power Replace the power supply of the Yes End supply printer unit Is the problem corrected No Replace the dc controller PCB E009 CLJ 8550mfp Table 2 18 Cause and solutions for E009 error Cause Issue Solution Fusing Does the rated voltage of the fusing No Check the product number of assembly assembly match the printer s voltage the fuser assembly if necessary replace the fusing assembly or the printer unit power supply ENWW Troubleshooting by using control panel messages 221 Table 2 18 Cause and solutions for E009 error continued Connectors Are connector J222 on the dc controller PCB and connector J26 of the fusing assembly connected securely No Connect the connectors Yes Replace the dc controller
210. l error messages continued Message Description Action CLJ 4500 4550 An internal power failure has occurred 1 Turn the printer off and then turn it on 2 If the error persists replace the high voltage power supply 3 Check the fuser to make sure that no jams are present CAUTION 54 1 errors can be caused by damaging the thermistor while clearing fuser jams 4 Make sure that no fluctuation in the power supply to the printer is occurring Check that the electrical specifications are met 5 If the error persists replace the low voltage power supply CLJ 8500 8550 The temperature humidity sensor in the printer has malfunctioned The temperature humidity sensor is located below tray 2 1 Reconnect connector J801 and relay connector J55 on the temperature humidity sensor and connector J206 on the controller board 2 If the error persists replace the cassette cross member assembly which includes the temperature humidity sensor 3 If the error persists replace the controller board ENWW Troubleshooting by using control panel messages 143 Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 A problem exists with the carousel assembly Either the carousel is not rotating or the sensor has failed Drive motor M3 provides drive for the print cartridge carousel If motio
211. l messages 109 Table 2 14 Numerical error messages Message Description Action CLJ 3500 3700 Note The printer cannot always determine whether the error exists in the cartridge or in the printer reader writer The printer cannot read or write to at least one print cartridge memory tag or at least one memory tag is missing XX Description 00 memory error on supply 10 missing memory on supply YY Description 00 black print cartridge 01 cyan print cartridge 02 magenta print cartridge 03 yellow print cartridge 1 Open and close the front door to re engage the cartridges N If the error persists reseat the cartridges 3 Exchange the cartridge for the indicated color with a cartridge in another slot to determine whether the error follows the cartridge or stays with the slot If the error follows the cartridge replace that cartridge Otherwise continue with step 4 4 Check the memory controller PCB contacts to the memory tag and clean them if they are dirty 5 Reseat the memory controller PCB connector J201 and DC controller PCB connector J1025 If the message persists replace the antenna PCB 6 If the message persists replace the memory controller PCB 7 Ifthe message persists replace the DC controller PCB 110 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action
212. lace the cartridge 5 Verify that the connectors between the memory tag antenna memory controller board and the DC controller are seated correctly 6 Replace the antenna PCB for the indicated color 7 Replace the memory controller PCB 8 Replace the DC controller PCB Calibrate the printer after replacing the DC controller See Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only on page 263 ENWW Troubleshooting by using control panel messages 85 Table 2 13 Alphabetical printer messages continued Message Description Action The fuser is either not installed or not correctly installed in the printer 1 Insert the fuser or make sure that the installed fuser is fully seated Press HELP for detailed information and then Press UP ARROW and DOWN ARROW to step through the instructions If the error persists verify that the connectors J18 on the fuser and J1101 on the DC controller are good replace them if necessary Replace the fuser assembly Replace the DC controller PCB Calibrate the printer after replacing the DC controller See Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only on page 263 86 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The fuser is either not 1 Press for help installed or not correctly installed
213. ler See Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only on page 263 alternates with CLJ 3500 3700 The transfer unit is either not installed or not correctly installed in the printer is defective the high voltage power supply connection to the transfer unit is defective or the DC controller PCB is defective _ Press for help 2 Ensure the transfer unit is fully seated that the contracts are not damaged 3 Replace the transfer unit 4 Replace the high voltage power supply PCB 5 Replace the DC controller PCB 94 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The blue lever inside the clear 1 Open the front door of the door is not locked printer open the clear door and swing the blue toner lock lever on the carousel to the right 2 Remove the print cartridge and then reinstall it making sure the cartridge is all the way in the printer 3 Swing the blue toner lock lever on the carousel to the left until it clicks and then close the clear and front doors Communication with the 1 Verify that all cables are multi bin mailbox has been connected correctly Ist 2 Turn the printer off and on to reset the printer ENWW Troubleshooting by using control panel messages 95 Table 2 13 Alphabetical printer messages continued
214. leshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 A firmware error occurred that caused the processor on the formatter to abort operation This type of error can be caused by invalid print commands corrupt data or invalid operations In some cases electrical noise in the cable can corrupt data during transmission to the printer Other causes include poor quality parallel cables poor connections or home grown programs On rare occasions when the formatter is at fault the error is usually indicated by a 79 Service Error 1 Turn the printer off and on to reset the printer 2 Verify that all cables are connected 3 Cancel all print jobs and then resend Try to isolate any offending print job 4 Delete the print job from the Windows spooler or from the print server 5 If the formatter pan assembly or DC controller was removed make sure that the ribbon cable between the DC controller and the interconnect PCB is connected Note The message appears on the printer control panel and the display is dark if the ribbon cable is not connected CLJ 4500 4550 To verify that the formatter is functioning correctly run the formatter tests that are available in the diagnostics mode If the formatter passes the formatter is not defective Do not replace the formatter See the note in the Description column for informat
215. lexer media path sensor SR6 Fuser input sensor SR33 Duplexer reverse sensor SR11 Tray 2 sensor A SR42 T2 input sensor SR12 Tray 2 sensor B PS901 Face down output sensor SR13 Tray 3 sensor A PS1501 Fuser output sensor Note Action for all media jams includes removing the media checking the flags testing the sensor with diagnostics and checking the connectors from the sensor to the DC controller by using the wiring diagram Table 3 8 CLJ 9500 jam messages Message Solution Close all of the doors Clear the jam Check the front door interlock switches and all of the connections Open tray 4 and the right side door to check for jammed media Check the paper path between tray 4 and the printer Check the tray size guides Replace the pickup separation or feed rollers Check the indicated tray Check the tray size guides Open the lower right door and remove the jammed media ENWW Jams 309 Table 3 8 CLJ 9500 jam messages Message Solution bk OND Check the indicated tray or open the lower right door Remove the jammed or loose media Check the tray size guides Replace the pick separation or feed rollers 2 Make sure that the tray 1 door is completely closed 3 Check the paper path and tray 1 for damage 4 Check for media in the lower right door area Open the tray 1 door ITB access and remove the jammed media Check the registration area for jammed media
216. lies with genuine HP supplies to see if the problem goes away e f necessary instruct the customer on proper media storage correct loading technique and printer operation Make sure the customer knows not to grab paper in the output bin during duplex printing ENWW Persistent jam troubleshooting 315 CLJ 4500 4550 paper path checklist Verify that media is correctly loaded in the input trays and that all length and width guides are set correctly Clean the printer Toner and paper dust in the paper path can inhibit free movement of media through the printer and can block the sensors Use the paper path test in the Diagnostic menu to vary the input selections of the printer to determine if the problem is associated with a particular area of the printer Worn rollers or separation pads can cause multifeeds Check the condition of the pickup rollers and separation pads Bent separation tabs on the front corners of the input trays can cause misfeeds and multifeeds Replace the tray if necessary Defective paper tray switches can cause jams by communicating the wrong paper size to the formatter Defective paper sensors along the paper path might signal a false jam Scraps of media left in the paper path can cause intermittent jams Always check that the paper path is clear when cleaning the printer and when clearing jams Also remove the fuser and carefully check it for debris 316 Chapter 3 Jams ENWW CLJ 4600 5500 jams in t
217. life remaining for each print cartridge Recycling Information Contains information about the Web site that you can visit for information about recycling Imaging drum area Contains the same information for the imaging drum that the print cartridge area provides for the print cartridges Warranty Note Contains information about how the printer warranty is affected when you use non HP supplies It also requests that you call the HP fraud hotline if a supply that is being detected as a non HP supply was sold as a genuine HP supply To print a supplies status page Table 2 8 Printing a supplies status page Product Instructions CLJ 2500 Press GO and CANCEL JOB simultaneously The configuration page also prints If you have an HP Jetdirect print server card installed the HP Jetdirect page also prints Note You can also print a configuration page in the embedded Web CLJ 3500 1 Press SELECT to enter the DLA ATON 2 Press the Down ARROW to highlight CLJ 4600 5 i CLJ 5500 3 Press SELECT to select 1 4 Press the DOWN ARROW to highlight 5 Press SELECT to select server or from the HP Color LaserJet 2500 Series Toolbox ENWW Printing information pages 37 Table 2 8 Printing a supplies status page continued Product Instructions 1 Press MENU until I J appears on the printer control panel display 2 Press ITEM until S appears on the display 3 Press SELECT to print the event log The CLJ
218. ly PCB 6 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller 126 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 A fuser error occurred Power cycle the printer to continue X description 1 low fuser temperature 2 fuser detected not coming to operating temperature after a jam or open door 3 high fuser temperature 6 open fuser heating circuit between the fuser and low voltage power supply 7 fuser pressure release mechanism failure 1 Remove the fuser and check it for damage or jammed media 2 Make sure that the printer is plugged into appropriate ac voltage 3 Turn the printer off let it cool for 10 minutes and then turn the printer on again to possibly clear the error 4 Replace the fuser 5 Check the fuser print engine electrical connectors J3019 for damage 6 Check connector J1501 on the fusing sensor PCA and connector J115 on the DC controller PCA 7 Check for a fuser drive or fuser motor failure Replace if necessary see the service manual for details 8 Replace the power supply unit see the service manual for details 9 Replace the DC controller PCA see the service manual for details ENWW Troubleshooting by using control panel messages 127 Table 2 14 Numerical error mes
219. matter 390 Chapter 5 Illustrations ENWW Table 5 5 Basic operation sequence CLJ 5500 continued Period Purpose Remark PRINT From the end of the To form an image on After the power is print period INTR period until the the photosensitive turned on the cartridge leading edge drum according to is cleaned every 35 detection sensor the video signal input pages and the ETB is detects paper and from the formatter cleaned every 100 then turns off the and to transfer the _ pages transfer positive bias toner image to the paper LSTR From the end of the To deliver the paper The last rotations last rotations PRINT period until out of the printer and period lasts until the period the ETB motor stops ito clean the ETB instant the formatter sends a print command Then the initial rotations period starts again CLJ 8500 8550 This information is not available for this product ENWW Power on sequences 391 CLJ 9500 a Initialization Standby iti Last rotation Jam Power OFF 392 Chapter 5 Illustrations ENWW Table 5 6 Normal sequence of operation CLJ 9500 State Period Operation WAIT From the time the power is turned on or a door is closed until the secondary transfer roller cleaning is complete power on main CPU sub CPU and ASIC initialize power supply fan rotates memory tags are checked formatter interface communication
220. meter is clean perform the toner density sensor cleaning procedure in chapter 7 of the online user guide 2 Inspect the density sensor wiring harness for damage The harness runs from the density sensor through the left side upper control arm of the imaging drum drawer to J1010 of the DC controller PCB Verify that the cable is firmly seated into the J1010 of the DC controller PCB 3 If the error persists replace the density sensor assembly CLJ 8500 8550 The process marks in the density sensing pattern are corrupted _ Press Go N Print a configuration page and troubleshoot the error as an image quality problem 3 Check the transfer guide for cracks and replace the transfer guide as needed CLJ 4500 4550 The optional equipment is not recognized Turn the printer off and then on to reset the printer CLJ 8500 8550 The waste toner sensor has failed Printing cannot continue 1 Replace the waste toner sensor assembly 2 Replace the imaging drum ENWW Troubleshooting by using control panel messages 149 Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 A waste toner sensor has malfunctioned 1 Turn the printer off and then on to reset the printer Remove the drum cartridge and clean the waste toner detection window by using a dry cloth Clean the waste
221. moisture the stiffness decreases dramatically and causes the paper not to fall away from the ITD properly e The CLJ 8500 8550 is the only LaserJet product with an Intermediate Transfer Drum The curvature of the drum and the natural curl of some paper can lead to TWJ Heavier media 24 Ib and greater falls away from the ITD more easily because of its weight and stiffness e Paper is hygroscopic it gives up or absorbs moisture depending on the environment Paper left overnight in a tray may absorb enough moisture to cause problems the following day Likewise paper left unwrapped might also absorb enough moisture to cause problems e Paper that is stored outside an office environment might require as many as 2 weeks of storage near the printer before it returns to a moisture content within specifications fm is reported as 13 00 10 in the event log For a printer with a a High Capacity Output HCI tray 13 x1 31 and 13 x1 3B are usually present because pages are being fed through the Vertical Transfer Unit VTU when the jam occurs in the printer If the customer fails to clear these pages the jams are reported when the customer attempts to restart the printer e Duplexing can lead to TWJ because of the fusing of the first side The temperature of the fuser causes some moisture to vaporize out of the media the pressure of the rollers may induce curl in the paper On the second pass TWJ might occur depending the orientation of
222. motor 3 Faulty DC controller PCB Replace the DC controller PCB 59 99 00 event log only An error occurred in the secondary transfer engaging mechanism 1 Replace the secondary transfer engagement sensor 2 Faulty secondary transfer engaging solenoid Replace the secondary transfer engaging solenoid 3 Replace the feed motor 4 Replace the DC controller PCB ENWW Troubleshooting by using control panel messages 187 Table 2 14 Numerical error messages continued Message Description Action 59 C0 Error on control panel alternates with 59 12 00 event log only An error occurred in the developing engaging CLJ 3500 3700 mechanism continued 1 The movement of the developing engaging lever is not smooth Make the movement of the lever smooth Replace the gear for the lever if damaged 2 Check each drive gear between the delivery motor and the developing engaging clutch Replace any if damaged 3 Faulty developing engaging sensor lever Reseat the developing engaging sensor lever to the correct position if its movement is not smooth or it is out of position Replace the lever if it is damaged or deformed 4 Faulty developing engaging sensor Replace the developing engaging sensor 5 The connectors in the developing engaging clutch drive signal line are not connected correctly Reseat the connectors J5014 and J1019 between the developing engaging clutch
223. n is not detected a 54 2 error appears M3 is a 6 phase stepping motor and receives its drive signal from J203 of the developing PCB Photosensor PS10 monitors movement and the position of the print cartridge carousel Different width tabs four tabs one for each cartridge on the left end of the carousel housing pass through PS10 to provide positioning information The black print cartridge tab is the home position Print cartridge position within the carousel is monitored by PS11 If PS11 fails or is incorrectly connected a 54 2 error appears Another indicator of this is that the carousel starts to rotate then stops immediately A 54 2 error message can also occur if the sensor is installed backwards 1 Turn the printer off and then on to reset the printer 2 Open the color print cartridge door and look for an obstruction If necessary remove the print cartridges individually by manually releasing the carousel brake and rotating the carousel around to each cartridge position and removing the cartridges Turn the printer off and on to reset the printer Note The printer cannotoperate with the top cover removed unless the carousel brake has been released or removed 3 Verify that the carousel drive motor wiring harness is firmly seated into connector J203 of the developing PCB 4 Verify that PS10 is working correctly and not excessively dirty clean if necessary and that the wiring harness
224. n is not detected by the DC controller s microprocessor if the drawer is closed and the printer is not in PowerSave mode 1 Turn the printer off and then on to reset the printer Because the fan is difficult to see listen to hear if the fan is rotating 2 Verify that FM3 connector 27 is not damaged or broken Verify that the fan connector is firmly seated into connector J1022 of the DC controller PCB 3 Verify that the fan connector is firmly seated into connector J1022 of the DC controller PCB 4 Ifthe error persists replace the fan 174 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action Fan 3 FM 3 has failed or is CAUTION CLJ 8500 8550 obstructed Turn the printer off and do not operate the printer in this condition to prevent serious damage 1 Turn the printer off and on to reset it 2 Reconnect connectors J645 and J647 on the main relay PCA J18 and J74 relay connectors and connector J227 on the controller board 3 Reconnect connector J641 on the main relay PCA and connector J102 on the power supply 4 Measure the voltage across J645 3 FAN3ON and J645 1 GND on the main relay PCA after the printer is turned on If the voltage changes from 0 V to 24 V replace fan 3 5 Measure the voltage across connector J641 1 24 VB and J641 4 GND on the main relay PCA after the printer is turned
225. n removed from the printer CAUTION Hewlett Packard recommends the use of HP products in this printer Use of non HP products can cause problems that require service not covered by the Hewlett Packard warranty or service agreements ENWW Troubleshooting 19 Hardware e Are the ITB or ETB unit and fusing unit seated correctly e Are all doors drawers and covers closed e For the CLJ 4500 Is the duplex unit power cord plugged into the printer and is the power supply plug connected to the duplexer Configuration e Has the printer hardware or software configuration changed e Could the problem be associated with any specific software e Could the problem be related to network configuration changes Remove the printer from the network and make sure that the failure is associated with the printer before beginning troubleshooting 20 Chapter 2 Service and troubleshooting ENWW Basic troubleshooting e Does the printer perform the initialization and power on steps See Does the printer turn on successfully on page 22 e Does the control panel show HE ready on page 24 e Does the event log show repeating errors See Troubleshooting by using control panel messages on page 39 e Does media jam in the printer See Jams on page 293 e Will the printer print information pages See Printing information pages on page 31 e Does the print quality meet the customer s expectations See Image quality
226. n the T driver PCA and connector J110 on the DC controller PCA C laser Check connector J3011 on the laser driver PCA connector J3059 on the scanner motor connector J3062 on the beam detect PCA connectors J812 and J815 on the T driver PCA and connector J110 on the DC controller PCA 134 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action M laser Check connector J3010 on alternates with the laser driver PCA connector J3053 on the scanner motor connector J3063 on the beam detect continued PCA connectors J812 and J815 on the T driver PCA and connector J110 on the DC controller PCA Y laser Check connector J3009 on the laser driver PCA connector J3050 on the scanner motor connector J3064 on the beam detect PCA connectors J812 and J817 on the T driver PCA and connector J108 on the DC controller PCA 3 Check FFC connectors J103 and J106 on the DC controller PCA J9002 on the formatter cage and J801 on the T driver PCA 4 Replace the necessary laser scanner unit see the service manual for details 5 Replace the T driver PCA see the service manual for details 6 Replace the DC controller PCA see the service manual for details ENWW Troubleshooting by using control panel messages 135 Table 2 14 Numerical error messages continued Message Description Action A scan
227. n turn the printer on again to clear the error N Make sure that the customer is using a known good software program good driver good cabling and good connections 3 Print a configuration page to make sure that the printer has the most recent release of formatter firmware If necessary flash the printer with new firmware 4 Check all of the accessory hardware such as memory DIMMs and EIO devices on the formatter by removing them Removing the hardware eliminates them as possible causes of the error 5 If the error persists the formatter might need to be replaced see the service manual for details The printer is printing a No action required CLJ 4500 4550 PostScript file in Windows 3 1 or 9x a An NEC firmware ROM CLJ 4500 4550 error has occurred Replace the firmware 122 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action Unsupported EDO memory Remove unsupported CLJ 4500 4550 has been installed memory Indicates a media timing Print one transparency or CLJ 4500 4550 issue This occurs when heavy or glossy sheet at a printing multiple copies of time transparencies or heavy or glossy media with either the PCL or PostScript driver The message also can indicate a timing mismatch between the engine and formatter E Occurs during Resend th
228. nd _ cable and connector J2039 of the Yes Replace the flat cable Or J2015 and lamp heater connected securely check each of the connectors connectors Reader Step 4 Is the voltage 38 V between No See the CLJ 8550mfp controller connectors J1611 1 GNDU and service manual PCB J1611 2 38V on the harness side of Yes Replace the reader the reader controller PCB controller PCB ENWW Troubleshooting by using control panel messages 233 E216 E219 CLJ 8550mfp E216 The scanning lamp fluorescent lamp fails to turn on when the power has been turned off and then on This error occurs when the intensity sensor does not detect light from the scanning lamp in 15 seconds E219 The scanning lamp fluorescent lamp has reached the end of its life This error occurs when the thermistor of the scanning lamp detects a temperature of 150 C 302 F or more while the scanning lamp is on Table 2 34 Cause and solutions for E216 E219 errors CLJ 8550mfp Cause Issue Solution Fluorescent Replace the fluorescent lamp Is the Yes End lamp problem corrected Inverter PCB Replace the inverter PCB Is the Yes End Reader problem corrected No Replace the reader controller controller PCB PCB E217 CLJ 8550mfp The temperature does not exceed the setting when the lamp heater is powered for three minutes or more while the scanning lamp heater is going through constant temperature control Table 2 3
229. nd close the input tray 3 Open the left lower cover remove the duplexer remove the jammed media reinstall the duplexer and close the left lower cover 4 Check the entire paper path for media 60 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action Check the event log message These instructions are for event log messages ii and The printer senses a jam in the multi bin mailbox Event log message 13 22 01 13 22 02 1 Open the jam access door and remove any media Verify that the left face up output bin full sensor PSFaceFull flag moves freely Verify that the flipper shaft is in place If the message persists replace the flipper assembly If the message persists replace the multi bin mailbox controller board PCA Check the event log message These instructions are for event log message The printer senses a jam in the multi bin mailbox Event log message 13 22 03 Check for a jam at the double belt system and delivery head assembly Ensure free movement of the double belt both belts Ensure parallel position of the double belt system Verify that the metallic tape is in place and in good condition If the message persists replace the transport belt motor M5 If the message persists replace the multi bin mailbox controller boar
230. ner error has 1 Turn the printer off and on CLJ 4550 occurred to reset the printer 2 Verify connectors J551 on Or the beam detect PCB J1103 on the scanner motor and J1006 on the CLJ 4550 DC controller are fully seated and connected correctly 3 If the error persists replace the laser scanner unit A scanner error has 1 Turn the printer off and on occurred to reset the printer CLJ 8500 8550 2 Reconnect connector J901 on the scanner motor PCA relay connector J40 and connector J211 on the controller board 3 Measure the voltage across connector J647 B11 24UH and J647 4 GND on the main relay PCA after the printer is turned on If the voltage is not 24 V replace the power supply 4 Measure the voltage across connector J211 7 SCND and J211 6 GND on the controller board after the printer is turned on If the voltage changes from 0 V to 17 V or more replace the laser scanner unit 5 If the error persists replace the controller board 136 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action A printer error has occurred 1 Press SELECT to continue X Description 2 Turn the printer off and 1 scanner error tnenon 2 scanner startup error 3 Reseat the connectors 3 scanner rotation error between the laser scanner and DC controller Y Description PCB iH 0 no color CLJ 3500 3700
231. ng drum before attempting to print If the condition persists take the imaging drum out and reinstall it Note The imaging drum must be installed and the upper lever must be to the left in order for the carousel to rotate 2 Turn the printer off and on to reset the printer 3 Replace the drum cartridge 4 Replace the drum cartridge if the drum cartridge on off switch guide is deformed 5 Make sure that the drum cartridge is installed Install the drum cartridge if it is not installed Ifthe drum cartridge is already installed turn the printer off reinstall the drum cartridge and turn the printer on ENWW Troubleshooting by using control panel messages 89 Table 2 13 Alphabetical printer messages continued Message Description Action continued 6 Reconnect connectors J641 to J643 and J647 on the main relay PCA connectors J671 and J673 on the subrelay PCA connector J102 on the power supply and connector J227 on the controller board 7 Check electrical continuity between connector J641 1 24 VB and J642 3 PMP on the main relay PCA when the door switch SW641 is turned on If there is no electrical continuity replace the right cover switch on the main relay PCA 8 Check electrical continuity between connector J671 2 PMP and J671 2 PFUPR on the subrelay PCA when the door switch SW671 is turned on If no electrical continuity exists re
232. nitialization 000000 258 Hard disk initialization 2 2 eee 261 Calibration bypass CLJ 3500 3700 CLJ 4600 and CLJ 5500 only 263 Calibrate Now CLJ 3500 3700 CLJ 4600 and CLJ 5500 only 263 Cold Reset err vd ai vee bowed ee eel aie Deana aes 264 ENWW 15 276 Registration page wc0csiets tae etedieddwwiart ated bbe 266 Setting registration numbers CLJ 4500 and CLJ 4550 only 267 Setting the registration number CLJ 4500 4550 only 267 Setting margin numbers CLJ 4500 4550 only 267 Enginetest i4 0 te tae MA ka Ae aed EE Rate fe 269 Diagnostics mode CLJ 4500 4550 1 2 kee 270 Gaining access to the diagnostics mode 271 Engine diagnostics CLJ 4500 4550 2 000000 273 Developer test CLJ 4500 4550 2 eee 274 Drum test CLJ 4500 4550 2 0 0 eee 275 Path sensors CLJ 4500 4550 2 2000 0c e eee 275 Path sensors CLJ 2500 3500 3700 4600 5500 8500 8550 9500 Door sensor test CLJ 4500 4550 00 0005 276 Door sensor test CLJ 8500 8550 2 000 sheet input unit 278 Troubleshooting printer accessories CLJ 8500 8550 279 Service LED descriptions 0020 cece eeeeeee 280 Service LED interpretation CLJ 8500 8550 281 16 Chapter 2 Service and troubleshooting ENWW Troubleshooting When the printer malfunctions or encounters an unexpected situation information
233. nnections to the formatter and the dc controller 3 Replace the formatter 4 Replace the dc controller 5 Replace the laser scanner Avi O gt y UE 49 xxxxx Formatter engine 1 error The control panel lights are blinking or the magenta print cartridge yellow print cartridge and imaging drum lights are on Turn the printer off and then on Replace the formatter Ac 50 X Fuser error 1 Turn the printer off for approximately 20 to 30 minutes and then turn the printer on If the error persists replace the fuser ENWW Troubleshooting by using control panel messages 51 Table 2 12 Service error secondary messages CLJ 2500 continued 57 x Fan motor error 1 Turn the printer off and then A 2 Turn the printer off and then LP reseat the cable that connects Oo the fan and the formatter 3 Replace the fan 4 Replace the dc controller 64 Scan buffer error 1 Turn the printer off and then 2 Replace the formatter 52 Chapter 2 Service and troubleshooting ENWW Alphabetical printer messages The following table contains the alphabetical error messages for all of the printer models that are covered in this guide Because different models require different procedures make sure that you find the exact wording of the error message on the control panel display Model numbers are not specified for every message in the table Note Self explanatory messages a
234. nter CLJ 8500 8550 2 Reconnect connector X Description 0 general error 1 startup error 2 rotation error 3 Replace the main motor M4 4 Reconnect connectors J641 to J643 and J647 on the main relay PCA connectors J671 and J673 on the subrelay PCA connector J102 on the power supply and connector J227 on the controller board J219 and relay connector J1 on the controller board 5 Check electrical continuity between connector J641 1 24 VB and J642 3 PMP on the main relay PCA when the door switch SW641 is turned on If no electrical continuity exists replace the main relay PCA ENWW Troubleshooting by using control panel messages 183 Table 2 14 Numerical error messages continued Message Description Action 6 Check electrical continuity between connector J671 CLJ 8500 8550 2 PMP and J671 2 continued PFUPR on the subrelay PCA when the door switch SW671 is turned on If no electrical continuity exists replace the subrelay PCA 7 Measure the voltage across connector J647 B11 24 UH and J647 4 GND on the main relay PCA after the printer is turned on If the voltage is not 24 V replace the main relay PCA 8 If the error persists replace the controller board 184 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ
235. o to step 6 rotary and turn the power off and then on Is No Go to step 3 motor drive the developing rotary stopper arm still assembly holding the developing rotary assembly in place Connector Step 3 Are connectors J704 and J706 No Connect the connectors developing jon the developing rotary motor PCB and securely rotary drive connector J220 on the de controller PCB assembly connected securely 5 V supply Step 4 Are connector J43 of the No Connect the connectors line developing rotary position sensor relay securely developing connector J42 and connector J207 on rotary the dc controller PCB connected position securely sensor 224 Chapter 2 Service and troubleshooting ENWW Table 2 23 Cause and solutions for E021 error CLJ 8550mfp Developing Step 5 Replace the developing rotary Yes End rotary position sensor Is the problem position corrected sensor Developing Step 6 Is the operation of the No Replace the developing rotary developing rotary stopper arm normal rotary stopper solenoid stopper Disconnect connector J705 of the developing rotary stop solenoid SL5 then measure the resistance between connectors J605 10 and J605 12 on the harness side and between J705 11 and J705 12 Is it about 30Q to 609 Developing Step 7 Does the voltage between Yes Replace the developing rotary connectors J220 A6 RLSROT and rotary motor PCB motor PCB J220 B5 GND on the de controlle
236. of the specified toner and cannot continue lt color gt Cyan magenta yellow or black 1 Replace the print cartridge specified 2 If the message persists reconnect connector J226 on the controller board and connector J5001 on high voltage converter 1 PCA 3 Check the contact on the black print cartridge and the contact on the printer for damage Replace defective parts Replace the black print cartridge if it is defective Check the contacts If they are disconnected return them to their correct positions 4 lf the message persists replace the high voltage converter 1 PCA 5 If the message persists replace the controller board The printer can support only one physical printer hard disk and two have been detected Printing will not be possible until one of the hard disks has been removed Turn the printer off and remove the extra printer hard disk Note The 8500 8550 DN model comes with a factory installed internal hard disk on the formatter board ENWW Troubleshooting by using control panel messages 105 Table 2 13 Alphabetical printer messages continued Message Description The top face down output bin of the printer is full Action 1 Remove all media from the top face down output bin on the printer to continue printing 2 If the message persists verify that the PS30 PS10 PS11 and PS3 sensors and the surrounding area ar
237. oller Printing a registration page 1 Scroll through the Service menu until appears Select the paper tray to pull paper from only when setting left side margins will the tray actually matter Press SELECT to print the eel page CLJ 4600 Press SELECT to enter the CLJ 5500 2 Press Down ARROW to highlight t Press SELECT to select amp Press DOWN ARROW to highlight F Press SELECT to print the pages CLJ 8500 Not applicable CLJ 8550 Not applicable CLJ 9500 Not applicable 266 Chapter 2 Service and troubleshooting ENWW Setting registration numbers CLJ 4500 and CLJ 4550 only On each of the color bars in the process section are bold numbers that indicate the current number set on the control panel These bold numbers are always in the middle of the bars To set the correct value for each of the colors look at the lines within the bar and find the grouping that has the color line directly on top of the black line it will have more white space Print at least five registration pages to see if the new settings are correct Note Using a magnifying glass to look at the lines will help in selecting the best number Seiting the registration number CLJ 4500 4550 only 1 Use the ITEM key to select the appropriate color cyan magenta or yellow in order to view or change its registration number 2 Press the VALUE key to change the registration number to the one identified 3 Press t
238. omponents have a finite life span and as these components reach the end of their useful life their ability to produce consistent print quality diminishes e Paper roughness can cause colors to look different Use standard paper Color selection process The user selects the color in the software program but the operating system might convert or modify some characteristics of the color before sending the information to the printer driver The printer driver might also modify color characteristics depending upon the selected output mode Any color characteristics not addressed by the printer driver or software programs are set to the product default The default color might not match the color the user selected 332 Chapter 4 Print quality ENWW Adjusting color balance These products feature automatic color calibration to provide high quality color output In situations that require critical color control you can manually adjust the density balance of the product s four toner colors CAUTION Performing this procedure changes the color balance of the product by altering halftones and affects all print jobs Note Whenever you experience color related issues calibrate the product before trying any other steps Table 4 4 Adjusting color calibration Product CLJ 3500 CLJ 3700 Instructions The Automatic color adjustment option optimizes the neutral gray color treatment halftones and edge enhancements used for e
239. on is made by using this procedure Press Go Turn the printer off and back on CLJ 9500 ENWW Press to open the menus Use A or toscroll to E and then press v Use A or to scroll to 5 and then press v Use A or to scroll to i and then press v Use A or to scroll to the appropriate language and then press y Press PAUSE RESUME to close the menus Using the control panel 9 Upgrading the firmware You can use several methods to upgrade the product firmware The following table shows whether or not your product has firmware available at www hp com Product Firmware available Location on HP website 3 002 00 Not available at the Web site Yes Not available at the Web site Yes Not available at the Web site Yes http www hp com go clj4600_ firmware Yes http www hp com go clj5500_ firmware Yes Not available at the Web site Yes http www hp com go clj9500_ firmware The following is a list of procedures available for upgrading firmware Using Internet Explorer for flashable firmware on page 11 Using HP Web Jetadmin on page 11 Using a manual download for parallel connections on page 12 Using FTP on page 13 10 Chapter 1 Control panel ENWW Using Internet Explorer for flashable firmware This procedure describes how to upgrade a single printer by using a Web browser and file transfer protocol FTP This method wor
240. on the printer control panel messages or illuminated LEDs alert you to the situation This section contains a pre troubleshooting checklist that helps eliminate many possible causes of the problem The remainder of the chapter provides steps for correcting the problems that have been identified Before beginning any trouble shooting procedure check the following e Are supply items for example the print cartridges fuser and rollers within their rated life e Does the configuration page reveal any configuration problems See Configuration page on page 31 Note The customer is responsible for checking and maintaining supplies and for using supplies that are in good condition The customer is responsible for media and print cartridge supplies The customer is also responsible for replacing the fuser transfer roller and all paper pickup feed and separation rollers that are at or near the end of their rated life ENWW Troubleshooting 17 Pre troubleshooting checklist WARNING Always turn off and then unplug the printer before servicing Current is present in the dc power supply whenever the printer is plugged in Before troubleshooting any specific printer problem evaluate the following printer conditions Note This is a generalized troubleshooting list Not all checklist items will apply to all of the printers in this guide e Is the printer on and does a readable message appear on the control panel display f
241. onds after the media is detected in the input tray the displayed size is automatically selected the message is cleared and printing begins CLJ 8500 8550 An input tray not currently selected has run out of media lt X gt Input tray number 2 3 or 4 lt type gt Last media type configured for the input tray lt size gt Last media size configured for the input tray 1 Load the media type and size specified on the printer control panel display 2 Replace the upper lower cassette lifter remaining paper sensor lever if it is damaged Also if the lifter is out of position set it in its correct position 3 If the message persists reconnect connector J1201 on the pick up PCA and connector J210 on the controller board 4 Ifthe message persists replace the tray 2 and tray 3 remaining paper sensors 1 and 2 5 If the message persists replace the pick up PCA 6 If the message persists replace the controller board ENWW Troubleshooting by using control panel messages 107 Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 9500 Tray is detected as empty 1 Load media into tray 2 Reseat the media in tray 3 Check the lifter gear of the paper pickup unit for damage Replace the lifter gear or paper pickup unit if necessary 4 Check connector J11 and J13 on the lifter motor intermediate connector J
242. or J648 on the main relay PCA and connector J102 on the DC power supply 4 Measure the voltage across connector J703 3 FAN2ON and J703 1 GND on the carousel motor PCA after the printer is turned on If the voltage changes from 0 V to 24 V replace fan 2 5 Measure the voltage across connector J701 1 24 VB and J701 2 GND on the carousel motor PCA after the printer is turned on If the voltage is about 24 V replace the carousel motor ENWW Troubleshooting by using control panel messages 173 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 continued 6 Measure the voltage across connector J641 1 24 VB and J641 4 GND on the main relay PCA after the printer is turned on If the voltage is 24 V replace the main relay PCA 7 Check the ac power supply 8 Ifthe problem is not corrected after the printer is turned off and on again find the cause of activation of the overcurrent overvoltage detection circuit in the power supply Wait more than two minutes before turning the printer on again 9 Ifthe error persists replace the power supply alternates with CLJ 4500 4550 The intake fan is located in the front center of the drum drawer The drum drawer is referred to as the upper front drawer for end users Fan rotation stops when the drawer is opened A fan error message appears when fan motio
243. or the copy module and the copy module related accessories fail to go to one 1 within three seconds E711 occurs when data has been written 10 times or more to the error register within 1 5 seconds during the communication between the copy module and copy module related accessories Table 2 41 Cause and solutions for E710 E711 errors CLJ 8550mfp Cause Issue Solution Copy module Turn the copy module rear power Yes End switch off and then on then turn on the control panel power soft switch Is the problem corrected Reader Replace the reader controller PCB Is Yes End controller the problem corrected No See the Service Manual for PCB the reader unit accessory in accessories question connected to the copy module E712 CLJ 8550mfp The error shown on the touch screen display is in the ADF See the CLJ 8550mfp service manual This error indicates that the IC for communication on the ADF side is faulty This error occurs when the communication with the copy module has been interrupted for five seconds or more E717 CLJ 8550mfp This error occurs when the copy module is started after disconnecting the copy data control without canceling the open circuit detection mechanism of the copy module If this error has occurred execute error clear and set COPIER gt OPTION gt IN FACE gt B CLR in service mode to 0 and then disconnect the copy data controller Note The copy data
244. or CLJ 2500 Table 2 9 Conitrol panel lights CLJ 2500 Light Description CD Light is off SS Attention light amber is on is ae Attention light amber is blinking V SUD an Ready light green is on Go light green is on V4 Ready light green is blinking TUD Go light green is blinking ENWW Troubleshooting by using control panel messages 39 Table 2 10 Printer Status light messages CLJ 2500 Message Description Solution Allcontrol panel The printer is in Startup Pressing buttons has no effect until the lights cycle one state printer is in the Ready state after another The printer is in Ready No action is needed state Pressing GO prints a Demo page e Pressing GO and CANCEL JOB Ao simultaneously prints a configuration e page and a supplies status page as well as an HP Jetdirect page if an HP Jetdirect print server card is installed The printer is receiving Pressing CANCEL JOB cancels the or processing data current job One or two pages might print as the printer clears the print job The D printer returns to the Ready state Ready O light on after the job has been canceled 40 Chapter 2 Service and troubleshooting ENWW Table 2 10 Printer Status light messages CLJ 2500 continued Message Description Solution Attention error The top Close the top cover cover is open Awe Attention error The Load med
245. or a specific time even when the waste toner case is not full Table 2 21 Cause and solutions for E019 error CLJ 8550mfp Cause Issues Solution Waste toner detection window Is the waste toner detection window of the photosensitive drum soiled Yes Wipe the waste toner detection window with a dry cloth Connectors Are connector J21 on the dc controller PCB connectors J631 and J633 of the waste toner sensor and the relay connector J71 connected securely No Connect the connectors securely Waste toner detecting block light emitting receiving section printer unit Is the light emitting receiving section of the waste toner detection block of the printer unit soiled Yes Dry wipe the light emitting receiving section of the waste toner detection block with a dry cloth Waste toner detection block printer unit Replace the waste toner detection block of the printer unit Is the problem corrected Yes End No Replace the photosensitive drum unit If the problem cannot be corrected replace the dc controller PCB E020 CLJ 8550mfp During image stabilization correction control the LED intensity signal LEDCNT is weak or is not generated at all Table 2 22 Cause and solutions for E020 error Cause Issue Solution Density Is the density sensor soiled Yes Clean the density sensor sensor with the special brush located light nea
246. or more after power on Table 2 38 Cause and solutions for E243 error CLJ 8550mfp Cause Issue Solution Connectors Are connector J901 on the control No Connect the connectors panel CPU PCB and connector securely J1608 on the reader controller PCB connected securely 236 Chapter 2 Service and troubleshooting ENWW ENWW Table 2 38 Cause and solutions for E243 error CLJ 8550mfp Control Replace the control panel CPU PCB Yes End panel CPU Is the problem corrected No Replace the reader controller PCB reader PCB controller PCB Troubleshooting by using control panel messages 237 E351 CLJ 8550mfp Table 2 39 Cause and solutions for E351 error CLJ 8550mfp Cause Issue Solution Power supply Are the PCBs and connectors No Make the connections connected securely If the power secure and turn the copier off supply is cut abnormally the copier and then on can indicate E351 when it warms up If this occurs turn the copier off and then on to reset ECO PCB Are the CO PCB and AP IP PCB No Connect the PCBs securely AP IP PCB connected securely Yes Replace the parts in the order indicated ECO PCB AP IP PCB E353 CLJ 8550mfp E353 is indicated in response to a mismatch of the serial number of the reader controller PCB and that of the EEPROM while the reader controller PCB is being replaced See the CLJ 8550mfp service manu
247. or persists replace the bad DIMM 4 Ifthe error persists replace the formatter board CLJ 8500 8550 A problem exists with the internal memory X Description 0 internal memory 1 DIMM slot 1 2 DIMM slot 2 3 DIMM slot 3 4 DIMM slot 4 5 DIMM slot 5 6 DIMM slot 6 7 DIMM slot 7 8 DIMM slot 8 1 Turn the printer off and on to reset the printer 2 Perform DRAM DIMM test from the formatter diagnostics in the Service Menu 3 If the problem persists replace the bad DIMM CLJ 4500 4550 The firmware ran out of memory trying to build the static entity directory 1 Check printer settings to determine which values have been changed 2 Clear the message by pressing Go 206 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 The internal RAM memory test failed 1 Turn the printer off and on to reset the printer 2 Perform DRAM DIMM test from the formatter diagnostics in the Service Menu 3 If the problem persists replace the bad DIMM alternates with CLJ 3500 3700 CLJ 4600 CLJ 5500 or alternates with CLJ 9500 Scan buffer error 1 Turn the printer off and then on 2 Perform a cold reset 3 Turn the printer off remove all of the extra memory and EIO devices and turn the printer on again CLJ 9500 4 Ifthe mess
248. or the CLJ 2500 is the Ready LED illuminated Yes Proceed with troubleshooting No Make sure that the printer is plugged in and turned on Verify that the fan s or motor s briefly run If the printer has a control panel but no messages appear on the display verify that the control panel display wire harness is connected at both ends Verify that the firmware DIMM s are seated and operating correctly Remove any HP Jetdirect or other EIO cards and then try to turn the printer on again Check the fuse on the power supply to make surethat it is not open e Does an error message appear on the control panel display or do the control panel LEDs indicate a service error Yes Use the error message or control panel lights CLJ 2500 section of this chapter to understand the message or LED pattern Print an event log and look for reoccurring errors No Proceed with troubleshooting e Can you print a configuration page Yes Proceed with troubleshooting No If an error message or service LED pattern appears on the control panel when you attempt to print a configuration page use the error message or control panel lights CLJ 2500 section of this chapter to understand the message or LED pattern e Does the print quality meet the customer s requirements Yes Proceed with troubleshooting No Verify that the correct media is being used and that it has been correctly stored Compare the images with the print defect samples
249. otal color pages Refurbish page count Transfer kit count Fuser kit count Serial number Service ID Cold reset paper ENWW Service mode functions 253 Table 2 52 Service menu items continued Product Service menu items CLJ 4500 The Service menu provides the following options CLJ 4550 Press the ITEM key to scroll through the Service menu Serial number Transfer maintenance count Fuser maintenance count Color page count Total page count Registration page see page 266 Diagnostics mode see page 270 Paper path test see page 274 Developer test see page 274 Drum test see page 275 Door sensor test see page 276 Formatter diagnostics see page 272 Engine test see page 269 254 Chapter 2 Service and troubleshooting ENWW Table 2 52 Service menu items continued Product Service menu items CLJ 4600 i CLJ 5500 Allows you to clear the printer s internal event log Allows you to reset the page count after replacing the formatter The page count should reflect the number of pages printed on the print engine rather than the formatter Allows you to reset the page count of the current transfer unit if the value is lost This item automatically resets to zero when the transfer unit is replaced and the user selects the choice to reset the transfer count Allows you to reset the page count of the current fuser if the value is lost This item automatically res
250. otate unless the following conditions are met The blue toner lever is locked The clear door is closed The imaging drum is installed The black print cartridge is installed completely including removing the orange seal from the black print cartridge and swinging the upper blue lever to the left The right upper door is closed 2 Turn the printer off and on to reset the printer 3 If the cartridge is installed correctly check that the sensor PS1901C is functioning correctly If necessary replace the sensor 4 Clean the sensor with a toner wipe 82 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action x 5 Reconnect connector CLJ 8500 8550 J221 on the controller continued board and reconnect connector J621 and relay connector J70 on the remaining color toner sensor 6 Make sure that the black print cartridge is installed If cartridge is installed turn the printer off reinstall the cartridge and then turn the printer on 7 Reconnect connectors J641 and J644 on the main relay PCA and connector J102 on the power supply 8 Reconnect connector J227 on the controller board and connector J647 on the main relay PCA 9 Check electrical continuity between connector J644 1 PBK and J644 2 PMP when the door switch SW644 is turned on If no electrical continuity exists replace
251. otor motor controller PCB and J211 6 GND No Replace the dc controller change from 0 to 17 V or more when PCB the copier is turned on E196 E197 E198 CLJ 8550mfp E196 The EEPROM IC212 on the dc controller has an error E197 A machine internal communication error occurs more than once Or the reception interruption on the dc controller side does not occur for a specific time for internal communication E198 The IC on the dc controller has an error Table 2 30 Cause and solutions for E196 E197 E198 errors Cause Issue Solution de controller Turn the copier off and then Yes End PCB on Is the problem corrected No Replace the dc controller PCB 230 Chapter 2 Service and troubleshooting ENWW E202 CLJ 8550mfp The scanner home position is not detected This error occurs when the scanner does not return to the home position when it has been started In response to this code the control panel keys will lock and the Wait message will appear This code is indicated only on the Error History screen in service mode Table 2 31 Cause and solutions for E202 error CLJ 8550mfp motor PM1 the problem corrected Cause Issue Solution Is the scanner at home position when No See the CLJ 8550mfp E202 is indicated service manual Original Does J1609A 2 on the reader No Check the wiring from the scanner controller PCB generate 5 vdc when rea
252. ottom service LED on the controller PCA comes on When you release the sensor the LED goes off Ifthe LED does not come on there is a problem with the sensor Replace the corresponding field replaceable unit 6 To stop the test turn the power supply switch back to operational mode and set the DIP switches on the controller PCA to the off position 278 Chapter 2 Service and troubleshooting ENWW Troubleshooting printer accessories CLJ 8500 8550 Status LED descriptions CLJ 8500 8550 The status light on the front of the CLJ 8500 8550 provides status information Table 2 61 Status LED on the 2 000 sheet input unit CLJ 8500 8550 State Description Resolution Solid green The unit is on and ready None required Solid amber The unit is experiencing a Isolate the problem using one of hardware malfunction the other procedures described in this section Flashing The unit has a jam or a page needs Clear the jam or remove the page amber to be removed from the 2 000 sheet input unit even if the page is not jammed The VTU might be open Close the door Off The printer might be in Power Save Press GO mode The unit is not receiving power Check the power supply and the power cables ENWW Troubleshooting printer accessories CLJ 8500 8550 279 Service LED descriptions es wem er Figure 2 1 Rear view of 2 000 sheet input unit CLJ 8500 8550 1 Service LEDs 2 DIP switches 3 Power supply Note Be
253. out error light are on or correct the error indicator light blinking messages appearing on the control panel or CLJ 2500 only error messages appearing on the Printer Status and Alerts screen CLJ 2500 only An See the appropriate service manual error message appears in the Printer Status and Alerts screen A problem exists but See the appropriate service manual no control panel lights are on or blinking and no messages appear on the Printer Status and Alerts screen 3 Do engine tests and Note information pages The formatter mustbe connected to a power source print to perform an engine test Print an engine test 7 see page 269 For the The engine test is See the appropriate service manual CLJ 2500 turn the not successful printer off and then on again before printing an engine test The engine test should An error indicator Consult the lists of control panel light message light messages to identify and appears on the correct the error control panel print without paper feed problems or CLJ 2500 only See Troubleshooting by using print quality problems Printer Status and control panel messages on Also print a Demo page Alerts software page 39 or a configuration page generates an error see page 31 message Poor print quality See Image quality on page 330 4 ls the software The software is not Uninstall and then reinst
254. owing procedure must be performed from the HP Color LaserJet 2500 Series Toolbox which is supported for Windows 98 NT 4 0 Me 2000 and XP To clean the engine when the computer is running a different supported operating system see the Readme on the software CD ROM or visit http Awww hp com support clj2500 1 Make sure that the product is turned on and in the Ready state 2 Open the HP Color LaserJet 2500 Series Toolbox 3 On the Troubleshooting tab click Cleaning Page and then click Print A page with a pattern prints from the product 4 Atthe product remove any media from tray 1 multipurpose tray 5 Remove the page that printed and load it face down into tray 1 6 At the computer click Clean For even better results repeat this procedure several times CLJ 3500 1 Press MENU to enter the menus CLJ 3700 2 Press the DOWN ARROW button to highlight and then press the SELECT button Press the DOWN ARROW button to highlight F then press the SELECT button Press the DOWN ARROW button to highlight E and then press the SELECT button A page with a pattern prints from the printer Remove all media from Tray 1 Remove the cleaning page and load it face down in Tray 1 Note if you are not still in the menus navigate to Trby using these instructions At the printer control panel press the DOWN ARROW button to highlight and then press the SELECT button The message TH appears on the control panel display
255. panel messages 185 Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 3500 3700 continued 59 7Y Control panel message 59 07 00 HP 3700 only event log only 59 07 ZZ HP 3500 only event log only ZZ is color 00 Black 01 Cyan 02 Magenta 03 Yellow 59 8Y Control panel message 59 08 00 HP 3700 only event log ly 59 08 ZZ HP 3500 only event log only ZZ is color 00 Black 01 Cyan 02 Magenta 03 Yellow 1 The connectors in the developing motor drive signal line are not connected correctly Reseat the developing motor connector J5006 and the DC controller PCB connector J1019 2 Faulty developing motor Replace the developing motor 3 Faulty DC controller PCB Replace the DC controller PCB 186 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 3500 3700 continued 59 90 and 59 A0 Errors on control panel 59 09 00 event log only 59 10 00 event log only An error occurred when the drum motor started or while the drum motor was rotating 1 The connectors in the drum motor drive signal line are not connected correctly Reseat the drum motor connector J5002 and the DC controller PCB connector J1019 2 Faulty drum motor Replace the drum
256. pear as a 54 00 error on the control panel 6 Replace the T driver PCA see the service manual for details 7 Replace the DC controller PCA see the service manual for details 54 05 procedure h Clean the OHT sensor 2 Check the transparency sensor for correct functionality 3 Check connectors J3032 on the transparency sensor intermediate connector J3027 and connector J121 on the DC controller PCA 54 15 54 16 54 17 54 18 and 54 20 procedure 1 Check the color and the tray 1 dependent items for the specified color 2 Defeat the right side upper door ITB access interlocks and check during a calibration that the density patches are formed correctly on the ITB 3 Print a laser alignment page to check for adjustable CPR problems ENWW Troubleshooting by using control panel messages 161 Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 continued 28 clean density CPR sensor warning only appears in the event log Note For error 28 the density sensor is dirty or g CPR sensoris dirty appears on the event log 29 clean density CPR sensor failed only appears in the event log and i appears on the control panel 30 halftone calibration error 4 Check the cleaning blade and ITB for e evidence of a cleaning blade failure which might cause the density calibration to fail
257. per length detection switch 5 Trat 2 paper width detection 11 Face up deflector solenoid switch 6 Tray 3 paper width detection switch ENWW Major components 383 Figure 5 36 CLJ 9500 location of sensors ENWW 384 Chapter 5 Illustrations Reference CLJ 9500 components 1 Print cartridge motor rotation sensors 2 ITB rotation sensor 3 Transparency sensor 4 Last paper sensor 5 Tray 1 paper sensor 6 Temperature humidity sensor Density sensor 8 Color registration sensor 9 Front fusing paper sensor 10 ITB sensor 11 ITB temperature sensor 12 Waste tone full notice sensor 13 Waste tone full warning sensor 14 Pressure disengaging sensor 15 Fusing delivery paper sensor 16 Upper left door sensor 17 Multifeed sensor 18 Registration paper sensor 19 Front secondary transfer paper sensor 20 Face down tray paper full sensor 21 Face down tray delivery sensor ENWW Major components 385 Power on sequences CLJ 2500 y CPU initialization ASIC initialization Formatter communication ready l Formatter communication start 4 Printer ID check Motor initial drive Main motor Toner cartridge motor Developing rotary motor Fuser motor Engaging motor Memory tag for toner cartridges imaging drum
258. per path CLJ 4600 5500 Issue Solution Drive gears are damaged This applies to jams that occur before the registration roller Check the drive gears in the paper pickup unit Replace the pickup drive assembly if the gears are damaged Registration roller and registration sub roller are dirty worn or damaged This applies to jams that occur before the registration roller Clean the registration roller or registration sub roller if it is dirty If it is still dirty after cleaning or if it is worn or damaged replace the paper pickup assembly Attaching roller is damaged This applies to jams in which paper is crumpled into an accordion as it enters the ETB Check if the attaching roller is damaged If it is damaged replace the ETB Calibrate the printer after replacing the ETB Cartridge shutter open close mechanism is damaged This applies to jams in which paper is crumpled into an accordion fold somewhere on the ETB belt The shutters in each print cartridge should open as you close the ETB If a shutter does not open replace that print cartridge Also check for a damaged shutter mechanism in the printer Cartridge drive motor assembly is damaged Inspect the cartridge drive assembly in each print cartridge If any are damaged replace the assembly for that print cartridge Attaching roller is defective Make sure the attaching roller is clean and the spring is in place
259. per size plates are installed correctly and that they are not bent 6 Ifthe error persists replace the paper deck drive assembly bushing 7 Ifthe error persists replace the paper deck drive assembly 8 Check that the paper tray raised sensor PS34 is working correctly perform a sensor test 9 Check for correct installation of the pickup roller 10 Check the pickup assembly cabling 11 If the error persists replace the pickup assembly 210 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 A multi bin mailbox flipper motor error exists l Verify that the C link and power cables are connected 2 Turn the printer off and on to reset the printer 3 Check for jams in the flipper assembly area 4 Ifthe error persists replace the flipper assembly 5 If the error persists replace the multi bin mailbox controller board PCA CLJ 8500 8550 A multi bin mailbox external memory error exists l Verify that the C link and power cables are connected 2 Turn the printer off and on to reset the printer 3 If the error persists replace the multi bin mailbox controller board PCA CLJ 8500 8550 A multi bin mailbox error exists XX error code from the optional device ok Verify that the C link and power cables are connected 2 Turn
260. pies can be printed to help isolate intermittent problems The following options become available after you enter the diagnostic mode e Print test page Run the paper path test from the default settings Tray 2 no duplex and one copy To specify other settings scroll down the menu and select the setting then scroll back up and select F to start the test e Source Select Tray 1 Tray 2 or Tray 3 if the optional 500 sheet paper feeder is installed e Duplex Enable or disable 2 sided printing e Copies Set the numbers of copies to be printed the choices are 1 10 50 100 and 500 290 Chapter 3 Jams ENWW CLJ 8500 8550 paper path test The paper path test simulates a page moving through the paper path from input trays 1 2 and 3 to the output bins Removing some engine parts Such as the transfer drum prevents paper from feeding completely It is possible to select the input and output trays for the test by indicating in the H menu the input tray and output bins to use by selecting ON or OFF Multiple input trays can be selected but only a single output can be selected A page is fed from each input tray to the selected output If a jam occurs during the test the test should continue with the next input tray in the list CAUTION Because jam detection is OFF in this mode an unattended test might result in damage to the printer The pickup rollers feed rollers registration roller transfer belt press clutch
261. place the DC controller PCA see the service manual for details alternates with The printer has detected that a non HP supply is currently installed If you believe that the supply is an HP supply call the HP fraud hotline at 1 877 219 3183 Any printer repair required as a result of using non HP supplies is not covered under HP warranty The printer personality for the current job could not be run in the available memory The job was canceled and no pages were printed Reprint the job If the message persists turn the printer off and on to reset the printer before sending the print job again 2 Install more printer memory For more information on printer memory options see the service manual The resource save area for the printer personality is full Fonts downloaded to the printer RAM might have been deleted Turn the printer off and on to clear the printer RAM ENWW Troubleshooting by using control panel messages 97 Table 2 13 Alphabetical printer messages continued Message Description Action The printer hard disk is new or has been formatted for another file system 1 Press SELECT to reformat the printer hard disk All data that is currently on the printer hard disk will be lost 2 If you do not want to initialize the printer hard disk wait until the message Clears 10 seconds or press GO and the disk will not be
262. place the delivery cover front cover switches on the subrelay PCA 9 Measure the voltage across connector J641 1 24 VB and J641 A1 GND on the main relay PCA after the printer is turned on If the voltage is not 24 V replace the power supply 90 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action continued 10 Measure the voltage across connector J647 B11 24UH and J647 4 GND on the main relay PCA after the printer is turned on If the voltage is not 24 V replace the main relay PCA 11 Check the drum cartridge on off switch lever on the printer Set the lever at the correct position if it is disconnected Replace the lever if it is cracked 12 Reconnect connector J209 and reconnect relay connectors J47 and J48 on the controller board 13 Replace the controller board CLJ 9500 T The ITB is not installed or cannot be detected 1 Open the front doors lower the green lever and then remove and reseat the ITB 2 Check the connector on the right side of the ITB for damage Replace the ITB if necessary 3 Check the harness and the connectors that support the ITB fan and the thermistor J3022 and check connector J131 on the DC controller ENWW Troubleshooting by using control panel messages 91 Table 2 13 Alphabetical printer messages continued Messa
263. ported by the life CLJ 4500 4550 test when replacing the fuser This error might also occur during the boot cycle Replace the formatter 124 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 When this error message appears you can scroll through the printer control panel to obtain all of the error information No action required CLJ 4500 4550 A request is not understood This error message is generated when the I O card does not support a command that was sent to it Check the command being sent the I O card might not support a particular feature CLJ 4500 4550 This error message is generated when the I O card receives a control panel menu action that it does not recognize Verify the action being sent CLJ 3500 3700 A fuser error has occurred X Description 1 low temperature error 2 fuser warm up service 3 high fuser temperature 4 faulty fuser 8 low fuser temperature subthermistor 9 high fuser temperature subthermistor See the service manual for specific instructions for troubleshooting and fuser replacement CLJ 4500 4550 A fuser error has occurred X Description 1 low temperature error 2 fuser warm up service 3 high fuser temperature 4 faulty fuser 5 fuser voltage mismatch verify that you have not installed
264. print cartridge cover switch in the subrelay PCA ENWW Troubleshooting by using control panel messages 147 Table 2 14 Numerical error messages continued Message Description Action 11 Check electrical continuity between CLJ 8500 8550 connector J642 1 continued PYMC and J648 1 l 24 VAR on the main relay PCA when the door switch SW642 is turned on If no electrical continuity exists replace the main relay PCA 12 Measure the voltage across connector J648 1 24 VAR and J648 3 GND on the main relay PCA after the printer is turned on If the voltage is not 24 V replace the main relay PCA 13 Reconnect connectors J704 and J706 on the carousel motor PCA and connector J220 on the controller board 14 Reconnect connector J43 on the carousel position sensor and reconnect relay connector J42 and connector J207 on the controller board 15 Measure the voltage across connector J220 A6 RLSROT and J220 B5 GND on the controller board after the printer is turned on If the voltage changes to about 3 5 V from 0 V replace the carousel motor PCA 148 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 The printer is not receiving data back from the density sensor PS14 located in the bottom of the imaging drum drawer 1 Verify that the densito
265. printer off and on to reset the printer alternates with CLJ 4600 CLJ 5500 A memory tag error was detected X Description 3 CPU 4 power supply 1 Turn the printer off and then on 2 If the error persists replace the memory PCB 3 If the error persists replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Troubleshooting by using control panel messages 181 Table 2 14 Numerical error messages continued Description Action alternates with A printer error occurred where a memory tag CPU error was detected Cycle power to continue X description 1 N A 2 air temperature sensor 3 CPU 4 power supply 1 Turn the printer off and then turn the printer on again to clear the error 2 Ifthe error persists reseat the print cartridges and the image drums 3 Check the memory tag on the consumables for damage Replace the consumable if it is damaged 4 Check the antenna assemblies for each consumable and the connections to the memory board 5 Replace the memory board 6 Replace the DC controller PCA see the service manual for details 182 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action The main motor M4 is not 1 Turn the printer off and on working correctly to reset the pri
266. problem reoccurs after the image drum is replaced check the print cartridge or the toner delivery system The printer cannot read or write to at least one print cartridge or image drum memory tag or at least one memory tag is missing XX description 00 e label memory data error 10 e label memory is missing 20 refilled non HP supply only appears in the event log 30 cloned cartridge supply only appears in the event log 90 toner replenishment malfunction reported by the image drum YY description 00 black print cartridge 01 cyan print cartridge 02 magenta print cartridge 03 yellow print cartridge 05 black image drum 06 cyan image drum 07 magenta image drum 08 yellow image drum xor 1 38 y error occurs a question mark is placed on the gauge for the supply or supplies that are generating the error These errors are noted in the event log and When a Fh appears on the control panel 1 Inthe instance of 10 00 10 20 and 10 30 errors check to see if refilled cartridges or drums are used Replace them with HP consumables Note If a drum or cartridge reached a low or out condition and was moved to a different printer it might be reported as a N Turn the printer off and then turn the printer on again to possibly clear the error 3 Replace the indicated supply 4 Check the print cartridge or image drum e l
267. quirement 50 to 60 Hz 2 Hz 50 to 60 Hz 2 Hz Power Printing 400 W Printing 400 W consumption Standby 26 W Standby 26 W Off 0 25 W Off 0 25 W Minimum 5 3 Amps 3 Amps recommended circuit capacity for a typical product 28 Chapter 2 Service and troubleshooting ENWW Table 2 3 Electrical specifications Product Item 110 volt models 220 volt models CLJ 4500 Power 100 to 127 V 10 220 to 240 V 10 CLJ 4550 requirement 50 60 Hz 2Hz 50 60 Hz 2 Hz Power Printing 470 W Printing 480 W consumption Standby 80 W Standby 90 W PowerSave lt 45 W PowerSave lt 45 W Minimum 16 0 Amps at 120 V 7 1 Amps at 220 V recommended circuit capacity for a typical product CLJ 4600 Power 100 to 127 V 10 220 to 240 V 10 requirement 50 60 Hz 2Hz 50 60 Hz 2 Hz Power Printing 426 W Printing 430 W consumption Standby 34 W Standby 36 W PowerSave 30 W PowerSave 32 W Off 0 W Off 0 W Minimum 6 Amps 3 Amps recommended circuit capacity for a typical product CLJ 5500 Power 100 to 127 V 10 220 to 240 V 10 requirement 50 60 Hz 2Hz 50 60 Hz 2 Hz Power Printing 592 W Printing 562 W consumption Standby 54 W Standby 51 W PowerSave 48 W PowerSave 44 W Off 0 W Off 0 W Minimum 6 Amps 3 Amps recommended circuit capacity for a typical product
268. r bias ENWW Power on sequences 389 Table 5 4 Basic operation sequence CLJ 4600 Period Purpose Remark LSTR From the end of the To deliver the paper out The last rotations period lasts last PRINT period until of the printer and to until the instant the formatter rotations the ETB motor clean the ETB sends a print command Then period stops the initial rotations period starts again CLJ 5500 Table 5 5 Basic operation sequence CLJ 5500 Period Purpose Remark WAIT From the time the To clear a potential During this period the wait period power switch is on the drum surface printer checks the toner turned on until the _ and to clean the level and detects ETB cleaning is ETB whether the cartridges completed are present The printer also executes the pulse width modulation adjustment color registration adjustment and image density calibration control as required STBY From the end of the To keep the printer When the formatter standby period WAIT or LSTR ready to print sends a sleep period or last command the printer rotation until the enters PowerSave formatter inputs a mode print command or until the power is turned off INTR From immediately To stabilize the initial rotations after the formatter photosensitive period inputs a print drum s sensitivity in command until the preparation for a TOP signal is sent to print operation the for
269. r PCB change from about 0 to about 3 5 V immediately after the copier is turned on Fuse Step 8 Is the fuse FU701 FU702 on Yes Replace the fuse developing the developing rotary motor PCB blown No Replace the developing rotary rotary motor If the problem motor PCB cannot be corrected replace the dc controller PCB E032 CLJ 8550mfp The counter for the copy data fails to operate This error occurs when the illegal prevention bit of the control device goes to zero 0 when the open circuit detection mechanism is not disabled ENWW Troubleshooting by using control panel messages 225 E040 CLJ 8550mfp The holding plat lifter multi feeder is faulty This error occurs during multi feeder pick up when the holding plate position sensor PS1302 does not detect the holding plate even when the dc controller PCB has generated the holding plate solenoid SL4 ON signal Table 2 24 Cause and solutions for E040 error CLJ 8550mfp Cause Issue Solution Connectors Are connector J213 on the dc No Connect the connectors controller PCB connectors J641 securely J642 J643 and J647 on the printer side main relay PCB connectors J671 and J672 on the sub relay PCB connector J1302 of the holding plate solenoid and connector J102 of the power supply connected securely Multi feeder Does the voltage between connectors Yes Replace the multi feeder tray tray PCF J1301 2
270. r connector J3063 on the beam detect PCA connectors J812 and J815 on the T driver PCA and connector J110 on the DC controller PCA 138 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action a Y laser alternates with Check connector J3009 on the laser driver PCA connector J3050 on the CLJ 9500 scanner motor connector continued J3064 on the beam detect PCA connectors J812 and J817 on the T driver PCA and connector J108 on the DC controller PCA 2 Check FFC connectors J103 and J106 on the DC controller PCA J9002 on the formatter cage and J801 on the T driver PCA 3 Check the FFCs for damage and make sure that they are correctly centered and seated in the connectors Replace the FFCs if necessary 4 Replace the necessary laser scanner unit see the service manual for details 5 Replace the T driver PCA see the service manual for details 6 Replace the DC controller PCA see the service manual for details _ An error has occurred in the onboard RAM Press SELECT to continue 2 Turn the printer off and then on CLJ 4600 CLJ 5500 ENWW Troubleshooting by using control panel messages 139 Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 3500 3700 An error occurred in printer memory
271. r J3001 and connector J120 on the DC controller PCA 4 Check the connectors for the media size detection switches J52 J54 J3076 and J3077 5 Replace the paper pickup assembly see the service manual for details 6 Replace the DC controller PCA see the service manual for details CLJ 3500 3700 No system was found 1 Turn the printer off and then on again 2 HP 3700 only reseat the firmware DIMM Make sure it is in slot 1 the bottom slot 3 Download new firmware HP 3700 try downloading through the parallel port 4 Replace the firmware DIMM ENWW Troubleshooting by using control panel messages 205 Table 2 14 Numerical error messages continued Message Description Action CLJ 4500 4550 CLJ 4600 CLJ 5500 A printer firmware problem exists Either no firmware DIMM is installed or the DIMM has failed If the formatter was just replaced make sure that all of the DIMMs have been moved from the old formatter to the new one 1 Turn the printer off and on to reset the printer N Reseat the firmware DIMM making sure itis in the slot surrounded by a white line with the text ROM ONLY IN THIS SLOT CLJ 4500 4550 A problem exists with the internal memory X Description 0 internal memory 1 DIMM slot 1 2 DIMM slot 2 3 DIMM slot 3 1 Turn the printer off and on to reset the printer 2 Reseat the DIMM If the err
272. r is installed with Tray 2 and Tray 3 if installed removed In this state the default value on the front panel should be 0X111111110010 where the x can be either 0 or 1 If there is any other value then there is a possible problem Identify the sensor or switch in the table above and test to see if the value changes Cassette paper size settings for each tray are described in the table below Table 2 59 Paper size settings CLJ 4500 4550 Paper Size Tray 2 switches Tray 3 switches DEF HIJ A4 000 000 B5 001 001 Custom A5 010 011 Custom B5 ISO 011 011 Letter 100 100 Executive 101 101 Legal 110 110 No tray installed 111 111 Path sensors CLJ 2500 3500 3700 4600 5500 8500 8550 9500 See chapter 5 for locations of path sensors Door sensor test CLJ 4500 4550 The door sensor test allows service personnel to open and close doors on the printer while watching the sensor status on the front panel Switches 4 and 5 are in series with each other which causes the value to toggle under identifier A 276 Chapter 2 Service and troubleshooting ENWW Once the door sensor test is initiated the front panel displays the status for each sensor listed in the table below As a door is opened and closed the state of the sensor changes the indicator values on the front panel Table 2 60 Sensor status CLJ 4500 4550 Name Description SW4 and Fron
273. r is referred to as the middle front drawer for end users Closing the rear door the drum drawer and the ITB drawer closes SW4 and SW5 When either of these switches is open the 24 V supply is disabled This safety feature protects the operator from any high voltages ENWW Troubleshooting by using control panel messages 67 Table 2 13 Alphabetical printer messages continued Message Description Action The drawer that holds the imaging drum the drum drawer is open Switch SW3 indicates that the drawer is open When the drawer is closed a plastic protrusion on the lower left corner of the drawer pivots an arm that allows SW3 to toggle to the open position 1 Open the drawer and then firmly push it closed using one hand in the middle of the drawer 2 If the message persists remove the printer s left side cover and inspect the mechanical linkage that closes SWS 3 Refer to the wiring diagram and verify the wiring The two wire connector should be firmly seated to SW3 and the wiring harness should be firmly seated to connector J1003 of the DC controller PCB 4 Ifthe message persists use an ohmmeter to verify functionality of SW3 5 Verify that FM3 in the front of the imaging drum drawer is functioning correctly The fan connects through J77 to J1022 on the DC controller Note Closing the drawer also closes SW4 the drum drawer switch When SW4 is open the
274. r off and then turn the printer on again to clear the error CLJ 9500 continued 2 Use the hardware diagnostic tools from the control panel to test each motor for correct functionality 3 Remove and reseat the secondary transfer roller and the cleaning blade toner collection bottle 4 Check the secondary transfer assembly for damage or jammed media 5 Check connector J3030 on the secondary transfer assembly intermediate connector J3026 and connector J121 on the DC controller PCA 6 Replace the secondary transfer assembly see the service manual for details 7 Replace the DC controller PCA see the service manual for details 204 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 9500 The tray number specified by is lifting media to the top of the tray for correct feeding but an obstruction is preventing the tray from lifting correctly X description 2 tray 2 cassette lifter 3 tray 3 cassette lifter 4 tray 4 cassette tray 8 tray 2 pickup roller lifter 9 tray 3 pickup roller lifter 1 Check the indicated media tray for correct functionality of all of the parts Replace the media tray if necessary 2 Check connector J11 near the pickup motor connector J12 near the pickup roller up down motor and connector J13 near the lifter motor 3 Check intermediate connecto
275. r the sensor emitting receiving section ENWW Troubleshooting by using control panel messages 223 Table 2 22 Cause and solutions for E020 error continued Connector Are connector J1101 on the density No Connect the connectors density detection PCB relay connectors J75 securely detection and J46 and connector J206 on the dc PCB controller PCB connected securely Density Is the voltage 24 V between connectors No Replace the density detection J206 5 24 UH on the density detection PCB PCB detection PCB and GND when the Yes Replace the dc controller copier is turned on PCB E021 CLJ 8550mfp This error occurs when the developing rotary position sensor PS3 does not detect the rotation position flag even when the developing rotary motor has rotated for a specific time This error can also occur when the PS3 detects a faulty or incorrect rotation flag width Note On rare occasions a broken carousel gear or broken position flag on the carousel gear can cause this error The CLJ 8500 8550 8550mfp carousel assembly cannot be replaced Table 2 23 Cause and solutions for E021 error CLJ 8550mfp Cause Issue Solution Print Step 1 Is the shutter of each print No Replace the print cartridge cartridge cartridge open correctly when in its whose shutter is not open correct position in the printer Developing Step 2 Close the print cartridge cover Yes G
276. ray 1 Table 3 9 Causes for jams in tray 1 CLJ 4600 5500 Issue Solution Pickup roller is dirty worn or damaged Clean the pickup roller If it is still dirty after cleaning or if it is worn or damaged replace the pickup roller Separation pad is defective Clean the separation pad If it is still dirty after cleaning or if it is worn or damaged replace the separation pad Drive gears are damaged Check the drive gears in the paper pickup unit Replace the pickup drive assembly if the gears are damaged Multipurpose tray pickup solenoid is defective 1 Disconnect the connector J1020 for the multi purpose tray pickup solenoid from the DC controller PCB 2 Measure the resistance between the cable side connectors J1020 11 and J1020 10 3 Ifthe measured resistance is NOT about 160 ohms replace the multipurpose tray pickup solenoid Pickup motor is defective Replace the paper pickup drive assembly Paper pickup assembly is defective Replace the paper pickup assembly DC controller PCB is defective Replace the DC controller PCB Calibrate the printer after replacing the DC controller ENWW Persistent jam troubleshooting 317 CLJ 4600 5500 jams in tray 2 Table 3 10 Causes for jams in tray 2 CLJ 4600 5500 Issue Solution Separation tabs in the paper cassette are deformed Straighten the tabs on the front corners of the tray or repla
277. re being lost In almost all cases this test should never be run In the 4550 series only CANCEL JOB will abort the test Do not turn off the printer or corruption of the NVRAM could result if the NVRAM test must be aborted use the CANCEL JOB key EXECUTE Runs the selected tests TESTS 272 Chapter 2 Service and troubleshooting ENWW Engine diagnostics CLJ 4500 4550 A good understanding of how the printer operates is required to use the engine diagnostics successfully To have a better view of the areas being exercised remove the left side cover and the ITB drawer Defeat the two ITB drawer switches located on the left side of the drawer cavity Listed below are the diagnostics available and a brief description of what the diagnostic will do Table 2 57 Engine diagnostics CLJ 4500 4550 Menu item Description Continuous Selected test will run once Selected test will run in a continuous loop In the 4550 series only CANCEL JOB will abort the test Turns on the motors that control the paper path section of the printer In the 4550 series only CANCEL JOB will abort the test Paper Path Rotates the carousel and the developers In the 4550 series only Test CANCEL JOB will abort the test Developer _ Turns on the drum drive motor that drives the drum and ITB In the 4550 Test series only CANCEL JOB will abort the test Drum Test Displays the state for each of the paper path senso
278. re not included Table 2 13 Alphabetical printer messages Message Description Action A user has attempted to Contact the printer select a menu value while the administrator to gain access printer control panel is locked to the control panel The duplexer is not correctly 1 Turn the printer off and installed remove the duplexer 2 Make sure that the duplexer is the correct duplexer for the printer 3 Turn the printer on and check for other error messages 4 Check the electrical contacts on the duplexer and on the printer for damage or obstructions 5 Turn the printer off 6 Reinstall the duplexer and then turn the printer on again 7 Ifthe error persists check the connections to the DC controller PCA low voltage power supply and high voltage power supply as appropriate 8 Replace the duplexer ENWW Troubleshooting by using control panel messages 53 Table 2 13 Alphabetical printer messages continued Message Description Action The printer cannot duplex because the rear output bin is open 1 Close the rear output bin door 2 Ifthe error message persists turn the printer off and then on alternates with The printer cannot duplex because the rear output bin is open or the duplexer _ Close the rear output bin N If the error message persists turn the printer off and then on Verify that the duplexer supports the media
279. remove unusable media such as a misfed page or jam No action is required The printer senses that one of the doors is not closed correctly _ Close the door indicated in the message 2 Check the function of the door interlocks see the service manual for interlock locations The covers need to be closed 1 Press HELP for more information 2 Close the front covers Note This message might also appear if the fuser is missing or incorrectly installed Ensure that the fuser is correctly installed The duplex drawer is not completely closed Close the duplex drawer ENWW Troubleshooting by using control panel messages 65 Table 2 13 Alphabetical printer messages continued Message Description Action The drawer that holds the intermediate transfer belt is open Note This drawer is called the ITB drawer but is referred to as the middle front drawer for end users Switch SW1 indicates the drawer is open When the drawer is closed a plastic protrusion on the lower left corner of the drawer pivots an arm that allows SW1 to toggle to the open position 1 Close the ITB drawer 2 If the message persists remove the printer s left side cover and inspect the mechanical linkage that closes SW1 3 Refer to the wiring diagram to verify the wiring the two wire connector should be firmly seated to SW1 and the wiring harness should be
280. ress SELECT to continue alternates with A density sensor out of range error was detected during a color calibration The density sensor might be dirty Inspect and clean the sensor Note The density sensor on the CLJ 8500 8550 is cleaned whenever the top right door is opened and closed A piece of foam attached to the transfer drum wipes the density sensor lens This error is more often related to a printer failure that causes the density pattern not to be written to the ITD Defeat the right upper door interlocks and examine the ITD during calibration to see if the patterns are written correctly alternates with A tray has been loaded with paper that is a standard size and the switch in the tray is set to custom 1 Move the switch to the standard position N Make sure that the media guides are against the media If available press HELP for detailed information and then use the UP ARROW and DOWN ARROW buttons to step through instructions ENWW Troubleshooting by using control panel messages 71 Table 2 13 Alphabetical printer messages continued Message Description Action The extended diagnostics power up key sequence has been entered See the diagnostics procedures in the service manual No action is required alternates with CLJ 4600 5500 or with CLJ 9500 The EIO hard disk had a critical failure and c
281. rform an NVRAM initialization ENWW Troubleshooting by using control panel messages 213 Table 2 14 Numerical error messages continued Message Description Action alternates with CLJ 3500 3700 CLJ 4600 CLJ 5500 CLJ 9500 i A nonvolatile storage device is full Pressing the SELECT button should clear the message Printing can continue but you might experience unexpected behavior X Description 0 onboard NVRAM 1 removable disk flash or hard 1 Press SELECT to continue 2 Perform a cold reset CLJ 9500 3 For 68 0 errors remove all extra memory and EIO devices and then turn the printer off and then on again 4 Ifa 68 0 error persists perform an NVRAM initialization CLJ 3500 CLJ 3700 CLJ 9500 5 For 68 1 errors use the HP Web Jetadmin software to delete files from the disk drive 6 If a68 1 error persists reinitialize the hard disk CLJ 3500 3700 CLJ 4600 CLJ 5500 CLJ 9500 7 A nonvolatile storage device is failing to write Pressing the SELECT button should clear the message Printing can continue but you might experience unexpected behavior X Description 0 onboard NVRAM 1 removable disk flash or hard 1 Press SELECT to continue 2 Perform a cold reset CLJ 9500 3 For 68 0 errors remove all extra memory and EIO devices and then turn the printer off and then on again 4 Ifa 68 0 error persists
282. ridge 8 500 pages Magenta print cartridge 8 500 pages 328 Chapter 4 Print quality ENWW Table 4 2 Life expectancies of print cartridges Product Description Estimated life at 5 coverage CLJ 9500 Black print cartridge 25 000 Cyan print cartridge 25 000 Yellow print cartridge 25 000 Magenta print cartridge 25 000 The estimated toner cartridge life is based on letter or A4 sized paper with an average of 5 toner coverage and a medium density setting In some HP color LaserJet products print cartridge life can be extended further by using the draft mode settings which conserves toner ENWW Life expectancies of print cartridges 329 Image quality For information and examples of image defects see your product service manual Note Whenever you experience color related issues calibrate the product before trying any other steps Drum functional test Note The CLJ 2500 CLJ 3500 CLJ 3700 CLJ 4600 CLJ 5500 and CLJ 9500 do not support the drum functional test Table 4 3 Drum functional test Product Instructions 1 Press the ITEM key until T appears 2 Press the SELECT key to run the test The front panel will show E while the test is running Watch to see if the ITB lift cams turn and if both the drum drive gear and the ITB drive gear are rotating 1 Press the left side of the ITEM button and the VALUE button at the same time 2 Press ITEM until appears on the d
283. ring 302 jams troubleshooting persistent 314 language setting 9 motors and fans 372 paper path test 290 PCBs 373 power on sequences 390 sensors 370 Service menu 255 service mode accessing 250 solenoids 371 switches 369 CLJ 8500 8550 2 000 sheet input tray status light 279 assemblies illustrations 374 color calibration 335 control panel lights and buttons 6 drum test 330 heaters 378 jams clearing 305 language setting 9 motors 378 paper path test 291 PCAs 379 sensors 376 Service menu 256 service mode accessing 251 transfer wrap jams 323 CLJ 8550mfp error messages 218 ENWW CLJ 9500 assemblies illustrations 380 clutches 383 color calibration 337 control panel lights and buttons 7 fans 382 jams clearing 308 jams frequent 324 language setting 9 motors 382 power on sequences 392 Service menu 257 service mode accessing 251 switches and solenoids 383 tray 4 troubleshooting 282 close door error messages 65 clutches CLJ 3500 3700 354 CLJ 4500 4550 361 CLJ 5500 371 CLJ 9500 383 cold reset 264 color calibration 333 matching troubleshooting 331 332 color LaserJet 2500 See CLJ 2500 color LaserJet 3500 3700 See CLJ 3500 3700 color LaserJet 4500 4550 See CLJ 4500 4550 color LaserJet 4600 See CLJ 4600 color LaserJet 5500 See CLJ 5500 color LaserJet 8500 8550 See CLJ 8500 8550 color LaserJet 9500 See CLJ 9500 components illustrations CLJ 2500 346 CLJ 3500 3700 350 CLJ 4500 4550 35
284. roubleshooting Use the following suggestions to isolate the cause of the problem After you have identified the cause use the tables that follow to find a recommended solution Note Use the paper path test in the Diagnostics menu to print pages while troubleshooting For more information see CLJ 4600 5500 paper path test on page 290 e View or print the event log and determine if a particular jam error occurs more often than others Try to identify a pattern e From the event log determine the frequency of a particular jam If a jam occurs repeatedly around the same page count consider this a single jam that the customer tried to clear e Try printing from all available input trays to identify whether the problem is isolated to one tray e Print the job in both simplex and duplex modes to identify if the problem occurs only in one mode or the other e Try printing on paper from an unopened ream that has been stored correctly If the jam does not occur with this media then the customer s media might be causing the problem e Ifthe jam occurs from when the printer is turned on check the paper path for small torn pieces of paper Also check for broken sensors or flags and check for loose or defective connections e Ifthe paper is torn folded or wrinkled typically along the leading edge inspect the paper path for items that could be causing the damage e Ifthe customer is using non HP supplies try replacing those supp
285. rs and switches In the 4550 series only this test will continue running until the CANCEL JOB key is pressed Path Displays the state for each of the door and drawer switches In the 4550 Sensors series only this test will continue running until the CANCEL JOB key is pressed Door Selected test will run once Sensors Selected test will run in a continuous loop In the 4550 series only CANCEL JOB will abort the test ENWW Diagnostics mode CLJ 4500 4550 273 Developer test CLJ 4500 4550 The developer test rotates the carousel stopping at each print cartridge and rotating the developer sleeve For the best view of the carousel and the print cartridge sleeves remove the drum cartridge The drum drawer must be closed before the test can run T is displayed 1 Press the ITEM key until 2 Prap the SELECT key to run the test The front panel displays E 5 while the test is running Watch the carousel and make sure that the print cartridge developer sleeve rotates The sequence is black followed by a pause then magenta cyan and finally yellow The test takes approximately 35 seconds While the developer test is running you will see the drum turn if it is installed as well as the drive gear for the ITB 274 Chapter 2 Service and troubleshooting ENWW Drum test CLJ 4500 4550 The drum test exercises the drum drive mechanism In addition the fuser motor is turned on to allow the lift cams for the ITB to be rot
286. s turned on Does the voltage change to about 24 V for connector J702 1 GND Developing Does the voltage change to about 24 Yes Replace the developing rotary motor PCB printer unit Main relay Does the voltage change to 24V Yes Replace the main relay PCB PCB between connectors J641 1 24 VB and J641 4 GND on the main relay PCB immediately after the copier is turned on The dc Is the dc power present in the printer No See the CLJ 8550mfp service power unit manual Yes Replace the dc controller PCB ENWW Troubleshooting by using control panel messages 243 E807 CLJ 8550mfp The heat discharge fan FM3 used for the area around the scanner is faulty This error occurs when the fan motor lock signal FAN3LK goes to one 1 for 1 5 seconds or more while the fan is rotating Table 2 44 Cause and solutions for E807 error CLJ 8550mfp Cause Issue Solution Connectors Are connectors J681 and J682 on the No Connect the connectors heat pre exposure LED relay PCB and relay securely discharge connectors J18 and J17 connectors fan 3 drive J645 and J647 on the main relay PCB assembl and connector J227 on the dc y controller PCB connected securely Connectors Are connectors J641 on the main relay No Connect the connectors 24 V for PCB and J102 on the dc power supply securely heat connected securely discharge fan 3 drive Heat Does the volta
287. sage appears e When the user opens the upper right door or cycles power when this message appears the control panel should pop to the menu item charger cleaneD in the resets submenu 1 Clean the post charger see the service manual for instructions 2 Select 5 when prompted about having cleaned the post charger ENWW Troubleshooting by using control panel messages 55 Table 2 13 Alphabetical printer messages continued Message Description Action The printer senses a jam in the duplexer 1 Open the left lower cover remove the duplexer remove the jammed media reinstall the duplexer and close the left lower cover The fusing assembly and diverter assemblies can also cause duplex printing problems Verify that they are operating correctly Open the left lower cover and defeat the delivery cover interlock Toggle the sensors at the paper exit and entrance While running the sensor monitor test from the Service Mode Menu verify that sensors 8 and 9 on the printer control panel indicate 1 on when toggled Note This procedure will not work if the left lower cover interlock is not defeated If the error message persists replace the duplexer 56 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The printer senses a jam in the fuser area
288. sages continued Message Description Action CLJ 8500 8550 A low temperature error has occurred in the fuser 1 Verify that the fuser is completely seated inside the printer Turn the printer off and on to reset the printer If the error persists turn the printer off and remove the fuser Measure the resistance across fuser connectors J26F A4 FXTHU and J26F A3 GND If it is not in the range of 250 k ohms to 600 k ohms room temperature check the wiring from the connector J222 on the controller board up to the upper thermistor If the wiring is normal replace the fuser kit If the error persists reconnect connector J222 on the controller board and connector J26 on the fuser If the error persists replace the fuser kit If the error persists replace the power supply CLJ 8500 8550 A warm up error has occurred in the fuser Turn the printer off and on to reset the printer Verify that the fuser is completely seated inside the printer Check for jams in the fuser If the error persists replace the fuser kit 128 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 A high temperature error has occurred in the fuser The controller board saves this error through an electrical charge in capacitor C259 1 Turn the printer off and
289. seconds overhead transparency mode 1 1 by 17 inch sized media e 12 7 seconds high gloss mode 11 by 17 inch sized media Fusing unit paper coil jam The fusing delivery sensor PS1903 does not detect the media for the specified time or longer within 0 2 to 1 2 seconds after PS1903 detects the leading edge of the media within approximately e 0 8 seconds normal mode e 3 2 seconds overhead transparency mode e 2 4 seconds high gloss mode 306 Chapter 3 Jams ENWW Table 3 6 Jam detection CLJ 8500 8550 continued Issue Cause Top face down output bin The media has not reached the top face down output bin delivery delay media jam delivery sensor PS11 within the specified time after the fusing delivery sensor PS1903 detects the media e about 4 0 seconds normal mode e about 16 0 seconds overhead transparency mode e about 12 0 seconds high gloss mode Top face down tray delivery The media has not passed through the top face down stationary jam output bin delivery sensor PS11 after PS11 detects the media within approximately e 2 4 seconds normal mode letter sized media landscape e 9 6 seconds overhead transparency mode letter sized media landscape e 7 2 seconds high gloss mode letter sized media landscape e 4 2 seconds normal mode 11 by 17 inch sized media e 17 0 seconds overhead transparency mode 1 1 by 17 inch sized media e 12 7 seconds high gloss mode
290. sed in the print jobs are different and might cause variations in the printed output e The printed output differs from the image on the monitor because the monitor and the print media have different reference values of black and white The monitor screen has charcoal gray for the black level and the white on the monitor screen is actually blue Black on the print media is limited only by the fill capability of the product and most good quality paper has a very high white level In addition phosphor used in color monitors and toner have entirely different spectra characteristics and different color rendering capabilities Differences between output are common Blues generally match better than reds e The color of the ambient light changes the perception of color Fluorescent light lacks many colors present in incandescent light and the color range of natural light is broader than any artificial light When comparing color choose a standard light source for reference and understand that the perceived color will change as the light changes e Long term color variations occur as paper ages Use high quality paper and protect the paper from sunlight to help minimize discoloration e Environmental changes can cause color variation The development process places a high potential across an air gap to attract toner to the imaging drum Changes in relative humidity vary the point at which the toner travels to the imaging drum e All consumable c
291. see the service manual for details Replace the DC controller PCA see the service manual for details ENWW Troubleshooting by using control panel messages 159 Table 2 14 Numerical error messages continued Message Description Action Note 54 06 54 11 54 12 54 13 CLJ 9500 continued For errors 11 through 14 the density is set to the highest or lowest possible value This usually occurs because the calibration patches are noton the ITB correctly These errors appear only in the event log 11 yellow density sensor the engine detects abnormality in the yellow density control and the engine default is used 12 magenta density sensor the engine detects abnormality in the magenta density control and the engine default is used 13 cyan density sensor the engine detects abnormality in the cyan density control and the engine default is used 14 black density sensor the engine detects abnormality in the black density control and the engine default is used Note Errors 15 through 18 only appear in the event log and printing continues 15 yellow CPR sensor the engine cannot detect the yellow CPR pattern on the ITB 16 magenta CPR sensor the engine cannot detect the magenta CPR 160 Chapter 2 Service anBH6tbEshediR 54 14 and 54 30 procedure 1 Check the cleaning blade and ITB for evidence of a cleaning blade failure which might cause t
292. sensitive period until drum to the registration paper be ready for printing sensor detects the end of the paper PRINT From the time the INTR Form the image on Carry out the image print period the stabilization control every period jis completed andthe photosensitive drum specified number of print or TOP according to the time after the power is signal is sent to the VIDEO turned on formatter signal sent from the until the fuser delivery formatter and paper transfer the sensor detects the toner image to the paper paper via the ITB LSTR From the end of PRINT Deliver the paper out Return to the INTR period as last until the delivery motor of the soon as another print rotations stops printer command is sent from the period formatter ENWW Power on sequences 387 CPU initialization ASIC initialization Video interface communication ready Video interface communication start Printer ID check Initial drive Feed motor drive Drum motor drive Delivery motor drive Developing motor drive Developing engaging disengaging control Note 1 Secondary transfer roller Engaging engaging check Disengaging Secondary transfer roller disengaging Note 2 it e Environment detection y Check residual paper in the printer Cartridge presence toner level check Note 6 Standby 388 Chapter 5 Illustrations ENWW CLJ 4500 4550 This information is not available for this
293. shooting 78 troubleshooting 48 Index 401 DIP switches 2 000 sheet input tray for CLJ 8500 8550 280 tray 4 for CLJ 9500 282 disk failure errors 72 full errors 73 initialization 98 261 multiple not supported 105 write protected 74 documentation ordering iii part numbers iv service notes 397 work instructions 396 door sensor test CLJ 4500 4550 276 doors error messages 65 downloading firmware manually 12 using FTP 13 using Internet Explorer 11 websites 10 DRAM controller errors 207 drum test 275 330 drum imaging error messages 74 life out 75 repetitive defects troubleshooting 338 status light 2 status page printing 37 troubleshooting 89 drum transfer 92 duplexer errors 76 jams 56 60 troubleshooting 53 duty cycles iv E ElO errors 48 76 115 217 electrical specifications 28 Embedded Web Server 397 engine test performing 269 troubleshooting 24 environment printer specifications 26 troubleshooting 19 402 Index error messages accessory CLJ 2500 47 alphabetical list 53 Attention with Ability to Continue CLJ2500 44 CLJ 2500 39 CLJ 8550mfp 218 CLJ 9500 jams 309 numerical list 109 service CLJ 2500 50 event log 36 F face down output bin jams 63 face up output bin full 77 factory default settings restoring 264 fans CLJ 2500 illustrations 348 CLJ 3500 3700 355 CLJ 4500 4550 illustrations 362 CLJ 5500 illustrations 372 CLJ 9500 illustrations 382 errors 52 169 feed roller replacing 17 f
294. simultaneously to see a secondary light either the EIO port ora_ pattern See Accessory error secondary Aw DIMM slot messages CLJ 2500 on page 47 O The printer stops Service error The printer stops printing and pressing any button has no effect SOE Oe 1 If the printer is connected to a power strip or surge protector disconnect it and connect the power cable directly to a working wall outlet 2 Turn the printer off and then on If the problem persists leave the printer off for 15 minutes to reset the printer 3 Ifthe problem continues press and hold GO and CANCEL JOB simultaneously to see a secondary light pattern See Service error secondary messages CLJ 2500 on page 50 ENWW Troubleshooting by using control panel messages 43 Attention with Ability to Continue secondary messages CLJ 2500 Avie Oo If the printer has an Attention with Ability to Continue error the Attention light is blinking and the Go light is on press and hold Go and CANCEL JOB simultaneously to see the secondary error message You can also view the embedded Web server which provides a text message that corresponds to the error and its secondary light pattern Table 2 11 Attention secondary messages CLJ 2500 Message Description Solution 20 Insufficient Memory error The printer memory is full Press GO to resume printing If you lose some data try to free some printer memory by
295. sion roller 148 3 mm 5 84 inches Cartridge drum 26 mm 1 00 inch Primary charging roller 28 mm 1 10 inches Face down delivery sub roller 38 mm 1 50 inches Developing cylinder 41 mm 1 60 inches Tray 2 feed sub roller Registration sub roller Preasure roller Face down delivery roller 1 65 inches 1 73 inches 1 80 inches 42 mm Tray 2 feed roller 44 mm Registration roller 46 mm Fuser delivery roller 75 mm 2 95 inches 77 mm 3 00 inches Photosensitive drum Fuser sleeve Mark appears at the leading Cassesette pickup roller edge of the image with no or repatition Multipurpose tray pickup roller 340 Chapter 4 Print quality ENWW Table 4 5 Repetitive defects continued CLJ 4500 4550 40 mm 1 6 inches Probable cause Charge roller 152 mm 6 0 inches Imaging drum 37 mm 1 5 inches Black developer sleeve 30 mm 1 2 inches Color developer sleeve 131 mm 5 2 inches Fuser 40 mm 1 6 inches ITB ICL roller 53 mm 2 1 inches Transfer roller 14 mm 0 5 inch Toner charging roller 33 mm Developing cylinder 1 3 inches 38 mm 1 5 inches Primary charging roller media attaching roller fuser delivery roller 39 mm 1 5 inches Toner feed roller 44 mm 1 7 inches cassette feed sub roller 49 mm 1 9 inches face down delivery roller
296. st inhibits free movement of media through the printer and blocks the sensors Change the printer input and output selections to determine if the problem is associated with a particular area of the printer Check the condition of the pickup rollers and feed rollers Worn separation pads on the multipurpose tray can cause media to multifeed Bent separation tabs can cause media misfeeds and multifeeds Replace the tray if necessary Defective paper tray switches can cause jams by indicating the wrong paper size to the formatter Scraps of media that remain in the paper path can cause intermittent jams Always check that the paper path is clear when you clean the printer and when you clear jams Also remove the fuser and carefully check it for jammed media 288 Chapter 3 Jams ENWW Paper path troubleshooting Paper path test CLJ 2500 paper path test If media is not being picked up or is not moving through the paper path you might want to observe all of the paper motion activities Override the door interlock SW301 to observe the followin functions e motor rotation e solenoid action e pickup roller motion e drive roller transfer roller fuser roller and gear and delivery roller motion Push a piece of heavy paper into the slot in the top cover callout 1 to engage SW301 this overrides the door interlock Figure 3 1 CLJ 2500 door interlock ENWW Paper path troubleshooting 289 CLJ 4500 4550 paper path test
297. starts high voltage control sequence values are set and the secondary transfer roller is cleaned e adjustment is made to reach the standby temperature e calibrations are performed D max D half CPR e jam door open failure emergency stop check is performed STBY From the end of the print start check is performed search for print standby WAIT or LSTR command Le Oncor dig automatic delivery request check is denen he performed the formatter commands the feed formatter or the rollers to eject residual pages in the paper power is turned off path and the ITB fuser registration and pickup rollers turn on e calibrations are performed door open failure check is performed INTR From the input ofa je motor rotates initial print reservation e fan motors rotate at full speed rotation command from the t tat formatter until start laser scanner motor rotates up of the primary e automatic power control APC is adjusted transfer bias e initial rotation final check is performed OPC pre ghost sequence occurs e jam door open failure sleep check is performed ENWW Power on sequences 393 Table 5 6 Normal sequence of operation CLJ 9500 continued State Period Operation PRINT From the end of the e fuser temperature control occurs INTR ieee ye the e TOP signal turns on engine to formatter secondary transier ignal bias is turned off CuI signal e image control occ
298. steps If the leading edge or the trailing edge of the paper is visible carefully pull the paper out of the printer If the paper is too difficult to remove remove the jam as described in CLJ 2500 to clear jams from output areas on page 295 4 After the jam has been removed replace the imaging drum and close the top cover 5 Press Go if the Go light is blinking If the Attention light is still blinking then another jam is present See CLJ 2500 to clear jams from input areas on page 294 and CLJ 2500 to clear jams from output areas on page 295 CLJ 2500 to clear jams from input areas 1 Open optional tray 2 or optional tray 3 to expose the jam 2 Complete one of these steps If the jam has already partially entered the printer see CLJ 2500 to clear jams from inside the printer on page 294 If the jam is only in the input tray remove the jam by pulling it out by the visible edge Realign all of the paper in the tray and proceed to step 4 3 If you could not remove the jam from inside the printer or by pulling it out of the tray grasp the jam from the outside of the printer and carefully pull it free 4 Push the paper down to lock the metal lift plate into place tray 2 only and slide the tray back into the printer 294 Chapter 3 Jams ENWW 5 Open the top cover close it again and then press Go if the Go light is blinking If the Attention light is still blinking then another jam is present Se
299. sure to turn the power supply off and set all DIP switches to the off position when you finish the test or the unit will not work The DIP switch is ON if it is to the right The DIP switch is OFF if it is to the left Note To go from one test to another or to change the DIP switch settings turn the power supply on the 2 000 sheet input unit to operational mode Reset the DIP switches on the controller PCA and then switch the power supply back to diagnostic mode to enable the new diagnostic test 280 Chapter 2 Service and troubleshooting ENWW Service LED interpretation CLJ 8500 8550 If the CLJ 8500 8550 2 000 sheet input unit is working correctly it will pick up paper from tray 4 and expel it the bottom service LED will flash regularly every 0 5 seconds Table 2 62 Patterns of LED flashing CLJ 8500 8550 Long Short Description Recommended action 1 sec 0 3 sec 3 1 Lifter malfunction Verify that the tray lifts freely by lifting it by hand Verify that the paper size plates are installed correctly in the same corresponding slots and are not bent If neither of these is the problem replace tray 4 2 1 Registration sensor The media does not reach the sensor delay jam Open the VTU door and remove the media Replace the paper feed VTU assembly or the paper pick up assembly 2 2 Registration sensor Open the VTU door and remove the media stationary jam initial Check the sensors
300. t and then verify that one of the circles in the ramp is a color very close to the background If the circles are not neutral gray additional corrections to cyan magenta or yellow might be necessary If there is an overall tint of color in the circles make the adjustments suggested by the following table However the most accurate correction is determined by the circles in the individual black cyan magenta and yellow ramps 336 Chapter 4 Print quality ENWW Table 4 4 Adjusting color calibration continued Product CLJ 9500 ENWW Instructions The HP color LaserJet 9500 features automatic color calibration to provide high quality color output In some situations you can manually adjust the density balance of the four primary toner colors The available range for each color is from 5 to 5 The default value is 0 CAUTION Performing this procedure changes the color balance of the printer by altering primary transfer biases and affects all print jobs Note This procedure only has an affect on midtone colors Solid or very light fills are not affected Press to open the menus Use A or W to scroll to Use A or F to scroll to Use A or V to highlight f Use A or V to highlight the desired color and then press v and then press v Use A or W to highlight the correct density setting Press v to select the density setting Press to set the density for the next color oO ON
301. t and rear door switches SW5 SW1 ITB drawer switch SW2 Print cartridge door SW3 Drum drawer switch Drum Detect if a drum cartridge is installed detect Fuser Detects if fuser is installed Changes the state of the sensor if not detected or removed when rear door is opened and closed 1 Press the ITEM key until panel is displayed on the front 2 Press the SELECT key to activate the test The front panel displays A through F with a binary value below it All the doors and drawers should be closed In this state the display will show all 0 s Open the doors and drawers one at a time to verify correct functionality If operating correctly the 0 will change to a 1 If a 1 is displayed with all doors and drawers closed there is a bad switch or connection ENWW Diagnostics mode CLJ 4500 4550 277 Door sensor test CLJ 8500 8550 2 000 sheet input unit 1 Set the DIP switches on the 2 000 sheet input unit s controller PCA for the sensor test See page 430 for an explanation of the settings 2 For each paper sensor a Open the paper tray and the VTU on the 2 000 sheet input a unit b Remove the metal spring that holds the sensor unit in place secured by 1 screw see figure 153 callout 2 and figure 154 callout 2 c Pull out the sensor unit 4 Use the switch that is located on the unit s power supply to switch to diagnostic mode 5 Manually activate the sensor When you activate the sensor the b
302. t clear after closing the doors turn the printer off and on to reset the printer 3 Clean the carousel position sensor PS3 by using compressed air If the problem persists replace the sensor 4 Reconnect connector J701 on carousel motor PCA connectors J641 J642 J644 and J648 on the main relay PCA connector J672 on the subrelay PCA and connector J102 on the power supply 5 Check operation of the carousel stopper arm Replace the carousel stopper solenoid if necessary 6 Ifthe error persists replace the carousel motor M1 7 Ifthe error persists replace the controller board 146 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 continued 8 Check the electrical continuity between connector J641 1 24 VB and J642 3 PMP on the main relay PCA when the door switch SW641 is turned on If no electrical continuity exists replace the main relay PCA 9 Check the electrical continuity between connector J644 1 PBK and J644 2 PMP on the main relay PCA when the door switch SW644 is turned on If no electrical continuity exists replace the black print cartridge on off switch 10 Check the electrical continuity between connector J642 1 PYMC and J642 2 PBK on the subrelay PCA when the door switch SW673 is turned on If no electrical continuity exists replace the
303. tadmin Go to http www hp com go webjetadmin to download HP Web Jetadmin for Microsoft Windows or Linux For a single printer select the IP hostname or IP address of the printer in the Quick Device Find field in the upper right corner and then click Go For ENWW Upgrading the firmware 11 multiple printer updates see the HP Web Jetadmin User documentation 4 Click the right arrow below Go and move to the Update menu option 5 Select Update and Update Printer not Update Jetdirect and continue 6 Click Browse to locate the firmware image file that you downloaded from the Internet Click Upload to move the firmware image file from the C drive to the HP Web Jetadmin server Click Refresh in the upper right corner It looks like a page that contains two arrows in a circle Select the date code to send to the printer firmware file name The date code format is YYYYMMDD YYYY is 200x the year and MM and DD are the month and the date 10Click Update Firmware HP Web Jetadmin sends the selected image to the printer Using a manual download for parallel connections 1 2 Print a configuration page to determine the firmware version Download the firmware from the HP Web site and copy it to a directory on the computer Open up a Command Prompt MS DOS prompt window by using one of the following procedures Click Start point to Programs and then click Command Prompt Click Start point to Programs
304. tating Table 2 46 Cause and solutions for E809error CLJ 8550mfp cooling fan between connectors J7 3 24 VB on the copy module main power supply PCB and J7 4 GND immediately after the copier is turned on Cause Issue Solution Connectors Are the relay connector J2031 No Connect the connectors power connectors J7 and J8 on the copy securely supply module main power supply PCB and cooling fan connector J1602 on the reader drive controller PCB connected securely assembly Power supply Does the voltage change to 24 V Yes Replace the power supply cooling fan The dc Is dc power present in the copy No See the CLJ 8550mfp service power module manual Yes Replace the dc controller PCB ENWW Troubleshooting by using control panel messages 245 E810 CLJ 8550mfp This error occurs when the drum cartridge detecting switch does not turn on at power on or when the cover is opened closed Table 2 47 Cause and solutions for E810 error CLJ 8550mfp Cause Issue Solution Drum Is the drum cartridge set in the copier No Set the cartridge correctly cartridge correctly and turn the copier off and then on Drum Check the drum cartridge switching Yes f the lever is displaced set cartridge lever on the printer side Is it displaced it to the correct position If the switching or cracked lever is cracked replace it lever Drum Is the drum cartrid
305. tents Using the control panel 0 0 00 eee 2 Control panel layouts 0000 eee 2 Setting the control panel display language 8 Upgrading the firmware 00000 cece eee 10 Using Internet Explorer for flashable firmware 11 Using HP Web Jetadmin 020000 0c eaee 11 Using a manual download for parallel connections 12 Using FIF ete etedeetth Cae Sea eee e dee eo ae 13 ENWW 1 Using the control panel This section has information about the layout of each product control panel and how to set the control panel display language Control panel layouts CLJ 2500 conirol panel layout Figure 1 1 Control panel layout CLJ 2500 1 Black print cartridge light 6 Imaging drum light 2 Cyan print cartridge light 7 CANCEL JOB button 3 Magenta print cartridge light 8 Attention light amber 4 Yellow print cartridge light 9 Ready light green 5 ROTATE CAROUSEL button 10Go button and Go light green 2 Chapter 1 Control panel ENWW CLJ 3500 3700 conirol panel layout Figure 1 2 Control panel layout CLJ 3500 3700 help button back arrow button ready light menu button data light attention light stop button down arrow button O AN OO a F WON a select button 10up arrow button 11 print cartridge level indicator 12display ENWW Using the control panel 3 CLJ 4500 4550 conirol panel layout
306. test Fault log event error log Power off to exit turn printer power off to exit the formatter diagnostics Paper path Developer motor Drum motor Sensor monitor Exit service mode 256 Chapter 2 Service and troubleshooting ENWW Table 2 52 Service menu items continued Product Service menu items CLJ 9500 Clear the event log after maintenance or repairs are accomplished Set the total monochrome page count if the formatter is replaced Set the total color page count if the formatter is replaced Set to retain the page count of a refurbished printer This allows the regular page count to be set to zero after the printer is refurbished The refurbished page count number is zero for new printers Set the total cleaning kit page count if the formatter is replaced Set the total transfer kit page count if the formatter is replaced Set the total fuser kit page count if the formatter is replaced Reset the printer serial number if the formatter is replaced Establishes the first power on date for warranty determination Sets the printer default media size to A4 or letter Perform a staple position calibration if the stapler stacker is attached ENWW Service mode functions 257 NVRAM Initialization NVRAM initialization should always be completed immediately after replacing the firmware or the formatter board This procedure
307. th the card in the specified slot has broken 1 Press SELECT to resume printing Note A loss of data will occur 2 Check that all cables are connected to the EIO ports and that the EIO board is seated correctly 3 Turn the printer off and on to reset it 4 If possible print to another network printer to verify that the network is working correctly A temporary printing error occurred X description 1 unknown misprint error 2 beam detect misprint 3 media feed error size 5 media feed error type 6 ITB detection error 7 feed delay error _ Turn the printer off and on to reset the printer 2 Check appropriate connectors 3 If the error persists troubleshoot the laser system 41 2 the media feed mechanisms the media size type settings and the ITB seating see the service manual for specific instructions ENWW Troubleshooting by using control panel messages 115 Table 2 14 Numerical error messages continued Description Action CLJ 8500 8550 The tray is configured for a specific media size but the printer detects a different size being fed For example the printer was expecting a letter sized page but detected that a legal sized page was fed instead 1 Check the media size definition for the specified tray If necessary reconfigure the media size defined for the tray 2 Verify that the paper guides are set corre
308. that are contained in the printer service manual 18 Chapter 2 Service and troubleshooting ENWW e Can the customer print successfully from the host computer Yes Troubleshooting is complete No Check the following maintenance media voltage environmental hardware and configuration conditions Repeat the corrective actions for the control panel error message service LED pattern or image defect until all errors and defects are corrected Maintenance e Has the printer been maintained on a regular basis e Are all of the maintenance units within their rated life Media e Is the customer using media as specified in the printer user guide and in the HP LaserJet Family Print Media Guide e Is the media stored correctly and within environmental limits Voltage Has the line voltage been checked to make sure that it meets the printer requirements Large motors used near the printer can cause temporary voltage changes See Electrical specifications on page 28 Operating environment e Isthe operating environment within the parameters listed in the printer service manual e ls the printer installed on a solid level surface e Is the printer protected from substances such as office cleaning materials and the ammonia gas that is produced by diazo copiers e Is the printer protected from direct sunlight Non HP components e Have all non HP components toner typeface DIMMs memory boards and EIO cards bee
309. the instructions for changing the display language 8 Chapter 1 Control panel ENWW Product CLJ 4600 CLJ 5500 Procedure Press SELECT to open the Press the DOWN ARROW to highlight press SELECT Press the DOWN ARROW to highlight and then press SELECT 4 Press DOWN ARROW to highlight E and then press SELECT 5 Press UP ARROW or DOWN ARROW to select the appropriate language and then press SELECT to set the selection Press PAUSE RESUME CLJ 8500 CLJ 8550 Pres and hold SELECT while turning the printer on When in English appears on the control panel display for approximatel one second release SELECT When the printer has restarted LA ISH appears on the display Note Only VALUE SELECT and GO are active while the display language is being configured All other buttons are ignored If you press GO without selecting a language the printer brings itself online and all subsequent messages are in English However because no display language was selected the message reappears after the power on self test when the printer is turned on again This message appears every time the printer is turned on until you select a language by using this procedure Press VALUE until the language you want appears on the control panel display Press SELECT to save the selection An asterisk appears to the right of the selection The language that is selected is the default language until another selecti
310. the black print cartridge on off switch 10 Move the upper lever blue to the left Replace the lever if it is cracked ENWW Troubleshooting by using control panel messages 83 Table 2 13 Alphabetical printer messages continued Message Description Action CLJ 8500 8550 continued 11 Replace the black print cartridge if it is deformed or damaged 12 Replace the remaining color toner sensor 13 Replace the controller board alternates with D CLJ 3500 3700 A color cartridge is installed in an incorrect slot or the cartridge is the wrong type and the cover is closed or either the memory controller PCB or the DC controller PCB are defective _ Press for help or verify that the cartridge is installed into the correct slot slots are color coded for each cartridge and that it is correctly seated 2 Replace the memory controller PCB 3 Replace the DC controller PCB 84 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The cartridge is either not 1 Insert the cartridge or installed or not correctly make sure the cartridge is installed in the printer fully seated alternates with 2 Press HELP for detailed information 7 9 3 Press Up ARROW and CLJ 4600 5500 Down ARROw to step through the instructions 4 Ifthe error persists rep
311. the control panel See the Help for more information The ROM disk is protected Try using a new disk that is PROTECTED and no new files can be not write protected CLJ 9500 written to it The language selection Select a new language when power up key sequence has prompted been entered The printer will prompt the user to select a new display language after it has completed initialization The Service Mode power up Press Go to close Service key sequence has been Mode entered The printer remains in Service Mode until you press Go ENWW Troubleshooting by using control panel messages 103 Table 2 13 Alphabetical printer messages continued Message Description Action alternates with The tray is loaded with media that is longer or shorter in the feed direction than the size that is configured for the tray 1 Adjust the side and rear media guides against the paper 2 If the media used is Letter Letter R A4 A4 R Executive B5 JIS B5 R A5 A5 R A3 11 by 17 or Legal size the tray switeh should be set to other media sizes The tray switch must be set before the size can be selected at the control panel 3 Reset the paper size in the Paper Handling menu 104 Chapter 2 Service and troubleshooting ENWW Table 2 13 Alphabetical printer messages continued Message Description Action The printer is out
312. the curl e The reports of TWJ increase dramatically in the United States during the summer months and are typically related to areas with high relative humidity higher than 50 relative humidity ENWW Persistent jam troubleshooting 323 Clearing repeated jams CLJ 9500 1 Make sure that the media is loaded correctly in trays and that all width guides are set correctly not skewed 2 Try turning over the stack of media in the tray If you are using letterhead media try printing from a different tray 3 Do notuse previously printed media or torn worn or irregular media 4 Check the media specifications If it is outside of the recommended specifications problems might occur See the HP LaserJet Printer Family Print Media Guide 5 The printer might be dirty 324 Chapter 3 Jams ENWW 4 Print quality Contents Printer cleaning page 1 2 0 cee eee eee eee 326 Life expectancies of print cartridges 0 000 e eae 328 IMAGE guall s sect whe led Pao eRe eee eee 330 Drum functional test 0 2 0 ee ee 330 Print density test and color checks 00 000 331 Understanding color variations 00 eee eee 331 Common causes of color variation 20 e008 332 Adjusting color balance 0 0 00 eee 333 Imaging drum defects 00 0 cee eee 339 ENWW 325 Printer cleaning page Table 4 1 Printer cleaning page Product Instructions CLJ 2500 The foll
313. the display shows the menu again In some cases it will take several seconds To cancel the NVRAM test while it is running press the CANCEL JOB key and hold it down until the display show the menu again NVRAM is put back in its original form and an error is logged in the Fault log When the Attention LED is on then there has been an error in the test Press the MENU key to get to the Fault log menu the ITEM key to see the different log messages and the VALUE key to scroll the message back and forth ENWW Diagnostics mode CLJ 4500 4550 271 Table 2 56 Formatter diagnostics CLJ 4500 4550 Test Description REPEAT If set to yes the tests will run continuously until interrupted In the 4550 series only CANCEL JOB will abort the test ON FAULT The following will occur for each setting BREAK The test will stop when a failure occurs PAUSE Stops the test for a short period of time then resume with the remaining tests CONT Continues to execute the tests even when a failure occurs ROM CRC 4500 series only Tests the firmware ROM for correct functionality DRAM Tests the on board RAM and the DIMMs SRAM 1 Tests the SRAM inside the ASIC SRAM 2 Tests the SRAM physically mounted on the formatter NVRAM Do not interrupt the NVRAM test Doing so will cause the printer to lose all NVRAM values Tests the formatter NVRAM This test takes 18 minutes to run and should only be used when NVRAM values a
314. then on to reset the printer 2 Turn the printer off and unplug it Place a flat blade of a screwdriver between the two wires of C259 to short out the capacitor and clear the memory 3 If the error persists replace the fuser kit 4 Ifthe error persists replace the power supply 5 If the error persists replace the controller board CLJ 8500 8550 A fuser drive or power unit error has occurred in the fuser 1 Turn the printer off and on to reset the printer 2 Verify that the fuser is completely seated inside the printer 3 If the error persists replace the fuser kit 4 Ifthe error persists replace the power supply 5 If the error persists replace the controller board ENWW Troubleshooting by using control panel messages 129 Table 2 14 Numerical error messages continued Message Description Action CLJ 8500 8550 A heater error has occurred in the fuser 1 Turn the printer off and on to reset the printer Verify that the fuser is completely seated inside the printer Reconnect connector J222 on the controller board connector J26 on the fuser and connector J101 on the power supply If the error persists replace the fuser kit If the error persists replace the power supply If the error persists replace the controller board 130 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error m
315. to Table 5 13 on page 359 Reference CLJ 4500 4550 Reference CLJ 4500 4550 component component PS1 ITB unit life sensor PS12 Toner level sensor PS2 Registration paper sensor PS13 Waste toner sensor PS3 Last paper sensor PS14 Density sensor PS4 Multi purpose tray paper PS301 OHT sensor multi purpose sensor tray PCB PS5 ITB home position sensor PS3001 Paper feed detection sensor PS6 Fusing unit pressure release PS3101 Reversing unit paper sensor sensor PS7 Delivery paper sensor PS3102 Face up sensor PS8 Cassette paper sensor PS3103 Reversing unit stationary paper sensor PS9 Face down tray paper full PS3104 Duplex pick up paper sensor sensor PS10 Carousel home position PS3105 Side registration home sensor position sensor PS11 Toner cartridge press sensor 360 Chapter 5 Illustrations ENWW Figure 5 14 CLJ 4500 4550 printer solenoids and clutches Reference CLJ 4500 4550 component SL1 Multi purpose tray pick up solenoid SL2 Paper pick up solenoid CLI Registration clutch CL2 ITB unit separation clutch CL3 ITB cleaning roller separation clutch CL4 Secondary transfer roller separation clutch ENWW Major components 361 Figure 5 15 CLJ 4500 4550 motors and fans Table 5 1 CLJ 4500 4550 motor and fan locations Reference CLJ 4500 4550 Reference CLJ 4500 4550 components components M1 Fusing
316. to the factory default settings To perform a cold reset Product Instructions CLJ 2500 Turn the printer off Press and hold down the GO button Turn the printer on and continue to hold the GO button After the Go Attention and Ready LEDs turn on continue holding the GO button for approximately five seconds but not longer than fifteen seconds During this process the Attention LED will turn off 5 Release the GO button Note If either the Go or Ready LED turned off or no LEDs turned off before the GO button was released then repeat steps 1 through 5 The printer LEDs begin cycling from front to back The cold reset process runs until the printer is in the Ready state CLJ 3500 3700 1 Turn the printer on As the printer performs its power on sequence press and hold SELECT until all three lights on the control panel are lit appears on the display press UP appears on the display Press SELECT The printer will perform a cold reset and then continue its power on sequence CLJ 4500 Select from the Reset menu CLJ 4550 CLJ 4600 Turn the printer on CLJ 5500 As the printer performs its power on sequence press and hold SELECT until all three lights on the control panel are lit When appears on the display press UP ARROW unti appears on the display Press SELECT The printer performs a cold reset and then continues its power on sequence 264 Chapter 2 Service and troubleshooting ENWW
317. to the imaging drum These usually appear as white marks in the dark printed areas of the page e Exposure of portions of the imaging drum to light This causes light sections in the printed output The life of the imaging drum is shortened by exposure to light Take these actions to solve preoblems that are related to these defects e Print at least four configuration pages to determine if the defect repeats in the same horizontal orientation e Inspect the imaging drum for scratches dents or other damage Replace if needed e Ifthe problem is dust remove the dust with isopropyl alcohol applied with a lint free static free wipe Try this only if the print defect is unacceptable and the only other alternative is replacing the imaging drum e Defects caused by exposure to light might clear up over time If severe replace the imaging drum Note The following defect rulers are to scale if this manual is printed on A5 size paper ENWW Repetitive defects troubleshooting 339 Table 4 5 Repetitive defects 22 1 mm 0 87 inch Pre ICL roller 33 9 mm 1 33 inches Developer sleeve 37 9 mm 1 49 inches ICL roller 38 1 mm 1 50 inches Charging roller 41 9 mm 1 65 inches RS roller 44 3 mm 1 74 inches T1 transfer 56 9 mm 2 24 inches T2 transfer 66 6 mm 2 62 inches Pressure roller 75 6 mm 2 98 inches Fuser film 89 0 mm 3 5 inches Transfer belt drive roller 90 0 mm 3 54 inches Transfer belt ten
318. tor has rotated at a specific speed Table 2 28 Cause and solutions for E100 error Cause Issue Solution Connector Are connector J1001 on the laser No Connect the connectors laser driver driver PCB and connector J205 on the securely signal line fdc controller PCB connected securely Connectors Are connector J2 on the BD PCB relay No Connect the connectors BD line connector J40 and connector J211 on securely the dc controller PCB connected securely Laser Is the voltage between connectors Yes Replace the laser scanner scanner unit J211 1 5 V on the dc controller PCB unit and J211 3 GND 5 V immediately No Replace the dc controller after the copier is turned on PCB ENWW Troubleshooting by using control panel messages 229 E110 CLJ 8550mfp This error occurs when the scanner motor fails to reach a specific revolution within 10 seconds after it has started to rotate This error can also occur when the BC PCB detects an error within 2 5 seconds after the scanner motor has started to rotate Table 2 29 Cause and solutions for E110 errors CLJ 8550mfp Cause Issue Solution Connector Are connector J901 on the laser No Connect the connectors scanner motor PC relay connector securely J40 and connector J211 on the dc controller PCB connected securely Laser Does the voltage between Yes Replace the laser scanner scanner connectors J211 7 SCND on the dc m
319. ts _ Check the printer settings to determine which values have been changed 2 Clear the message by pressing Go CLJ 8500 8550 A nonvolatile storage device is full Some settings might have been reset to factory defaults Check the printer control panel settings One or more fields might have been reset to their factory defaults during error recovery The next time the printer is turned off and on NVRAM will clear and all factory defaults will be restored 212 Chapter 2 Service and troubleshooting ENWW Table 2 14 Numerical error messages continued CLJ 4600 CLJ 5500 CLJ 9500 X Description 0 onboard NVRAM 1 removable disk flash or hard Message Description Action One or more printer settings 1 Press SELECT to continue Savin the nonvolatile 2 Turn the printer off and 9 storage device are invalid ther o and have been reset to its factory default Pressing the 3 Check the printer settings alternates with SELECT button should clear to determine which the message Printing can settings have been continue but you might changed experience unexpected 4 Perform a cold reset _ behavior 5 Turn the printer off remove all of the extra memory and EIO devices and then turn the printer on again For 68 1 errors remove files from the hard disk by using the control panel or HP Web Jetadmin Reinitialize the hard disk drive Pe
320. ts Therefore determination of the problem will rely on the technicians skill To exit diagnostic mode turn the printer off Note In the 4550 series you can abort a test run by pressing the CANCEL JOB key and holding it down until the display shows the menu again In some cases it will take several seconds To cancel the NVRAM test while it is running press the CANCEL JOB key and hold it down until the display show the menu again NVRAM is put back in its original form and an error is logged in the Fault log When the Attention LED is on then there has been an error in the test Press the MENU key to get to the Fault log menu the ITEM key to see the different log messages and the VALUE key to scroll the message back and forth 270 Chapter 2 Service and troubleshooting ENWW Gaining access to the diagnostics mode e To access the diagnostics mode hold down the left side of the ITEM key and turn on the printer Formatter diagnostics are designed to be used by qualified service personnel This set of tests are designed to thoroughly test the functionality of the formatter If all the tests pass the formatter is working correctly and it is likely that the problem resides elsewhere Listed below are descriptions of the formatter tests available CAUTION NVRAM can be lost if the printer is turned off during testing Note In the 4550 series you can abort a test run by pressing the CANCEL JOB key and holding it down until
321. tures are selected 3 To remove the meessage from the display press 4 Ifthe message persists a problem might exist in the software program or with The RAM disk has reached its capacity Delete files and then try again or turn the printer off and then turn the printer on again to delete all of the files on the device Delete files by using HP Web Jetadmin or another software utility or from the control panel See the Help for more information 2 To remove the meessage from the display press 3 If the error persists increase the size of the RAM disk and change the RAM disk size from the menu at the control panel alternates with The RAM disk is protected and no new files can be written to it For CLJ 3700 printers use HP Web Jetadmin to turn off write protection To remove the message from the display press For other printers no action is necessary ENWW Troubleshooting by using control panel messages 99 Table 2 13 Alphabetical printer messages continued Message Description Action A firmware upgrade is in progress Do not turn the printer off until the printer returns to a Ready state CLJ 9500 The T crg print cartridge motor cannot turn the indicated print cartridge 1 Remove and check the indicated print cartridge and the printer side for damaged drive linkages Shake the pr
322. urs e high voltage control occurs e paper pickup control occurs e next page pickup timing is coordinated e toner is supplied to the drum cartridge e jam door open failure emergency stop check LSTR From the end of the je paper pickup control occurs last print operation until Je scanner motor stops rotation the drum motor and high volt trol st the ITB motor stop 9N voltage contro Stops e fuser control reverts to standby e fan motor control occurs 394 Chapter 5 Illustrations ENWW A Service support Contents Obtaining work instructions 000 00 e eee 396 To gain access to work instructions 0 00000 396 Embedded web server 0 020 eee eects 397 Obtaining service noteS 1 2 2 2 0c eee ee 397 To gain access to service notes 2 00000 eee 397 Service websites 0 0 0 eee eens 398 ENWW 395 Obtaining work instructions To gain access to work instructions 1 Open a Web browser such as Internet Explorer or Netscape Navigator 2 Type http partner americas hp com in the Address or Go box and then press Enter Under enter site click hp partner web Type your user name and password and then click OK Click support Under technical support information click technical support website Click online work instructions ON Oa fF Ww Select the product that you want from one of the lists Table 5 7 Commonly used work instructions Product Descriptions
323. y 4 troubleshooting toolS 0 00 c eee eee ee 282 3 Jams General paper path checklist 0 20 00 00 cece eee eae 288 Paper path troubleshooting 000002 eee eens 289 Paper path test 0000s 289 VAISS s anran ang hee e ea he ed A eee eee eee ee ce 293 CLI 2500 JAMS iini ee eke Vad dy eed eee ER aee 293 CLJ 3500 3700 jam locations 00 eee 296 CLJ 4500 4550 jam locations 20000 eae 300 CLJ 4600 5500 jam locations 0 0 eee ee eee 302 CLJ 8500 8550 jam locations 00000 eae 305 CLJ 9500 jam locations 00 cece eee 308 Persistent jam troubleshooting 0 00 e eee eee ee 314 CLI 2500 2 cxccne eed e eb iee de eae thee een wees 314 GLJ3500 8700 oc eed cade wea edd a ete eee eek seed 314 CLJ 4500 4550 6 ee 314 CLS 4600 5500 ieee es ee tener ee de bene ed adhe deees 314 CLJ 8500 8550 2 ee 323 Clearing repeated jams CLJ 9500 005 324 4 Print quality Printer cleaning page eee ee eee 326 Life expectancies of print cartridges 00 2000 328 Image QUAY cerier eaae ee a ke eer ce er 330 Drum functional test 00 000 cee eee 330 Print density test and color checks 004 331 Understanding color variations 200 0 0a 331 Common causes of color variation 0 00 332 Adjusting color balance 0 0 0 333 Repetitive defects trou

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