66. Troubleshooting
Contents
1. 1 Replace the solenoid if necessary 2 Clean the pad friction with soft clothe dampened with IPA Isopropyl Alcohol 3 Use the smooth paper e Description If contaminated at intervals of 57mm on the back of a paper Check and Cause Solution 1 Contamination of the pressure roller or heat roller Background Hot off set 2 Check the claw of the fuser whether it is unfit ted 1 After disassembling the fuser clean contami nation between the heat roller and the ther mostor and remove the contamination of the pressure roller 2 If there is heavy background repair it by the background troubleshooting method 3 The surface of the heat roller with IPA or water 4 Check the warp or separation of the sprint claw and the holder plate claw and then man age it 66 Service Manual Samsung Electronics Troubleshooting 6 2 7 Paper rolled in the Toner Cartridge OPC Drum e Description Paper is rolled up in the OPC Check and Cause Solution 1 Paper is too much thin 1 Recommend to use normal paper 2 The face of paper is curled 2 How to remove the rolled in the OPC Drum e Remove the paper while turning the OPC Drum against the ongoing direction Service Manual Samsung Electronics Troubleshooting 6 3 Malfunction 6 3 1 All LEDs blinking Fuser Error 1 All the lamps on the operator panel blink e Description 2 Gear of the fuser does2. 4 Is the movement Up and Down of the transfer roller smooth 5 Is the HVPS normal 1 The toner cartridge is basically designed to print 2 000 sheets with 5 image 2 The B S is not guaranteed if using recycle paper 3 Replace the developer when the life span of it has been ended 4 Clean the bushing part of the transfer roller 5 If the problem is still not solved replace the developer 6 20 Service Manual Samsung Electronics Troubleshooting 6 5 9 Ghost 1 e Description Ghost occurs at 75 5 mm intervals of the OPC drum in the whole printing Digital Printer Digital Printer WILUG G Digital Printer Check and Cause Solution 1 Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the elec trode of the Developer 2 Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the one in the HVPS board 3 The life of developer is expired 4 Transfer roller lifetime 50 000 sheets has expired 5 Abnormal low temperature below 10 C 6 5 10 Ghost 2 1 Clean the terminals when contaminated by toner particles 2 Occur in the developer cartridge replace the developer and try to print out 3 Replace the engine board if not solved by the above directions 1 2 4 If not solved by the direction 3 check the transfer roller life
3. Secure more space using the disk utilities program The connection of the cable and printer port is not proper Check if the connection is properly done and if the parallel port in CMOS is rightly set up 3 As a printer port Select ECP or SPP among SPP Normal ECP and EPP modes increase print ing speed SPP normal mode support 8 bit data transfer while ECP Mode transfer the 12 bit data 4 If the regular font is not printing the cable or the printer driver may be defective Turn the PC and printer off and reboot the system to print again If not solved double click the printer in my computer If the regular fonts are not printed this time again the cable must be defective so replace the cable with new one ga Service Manual Samsung Electronics Troubleshooting 6 4 3 Abnormal Printing The printing is not working properly even when the cable has no problem even after the cable is replaced If the printer won t work at all or the strange fonts are repeated the printer driver may be defec tive or wrong setup in the CMOS Setup e Description Check and Cause Solution 1 Set up the parallel port in the CMOS SETUP 1 Select SPP Normal or ECP LPT Port the among ECP EPP or SPP in the CMOS Setup 2 Printer Driver Error 2 Check the printer in My Computer to see if the printer driver is compatible to the present driver or delete the old driver if defective and reinstall the new driver 3
4. 2 If the paper is rolled in the Fuser Roller e This occurs when a Guide claw is broken away or transformed e It occurs when the Spring of a Guide claw is broken away or transformed e It occurs when the Heat Roller or Pressure Roller is seriously contaminated with the toner 3 Paper is accordion in the fuser 1 Check if the exit sensor actuator is defective Check if the actuator exit is unformed Check if the lever part is unformed in shape Check whether burrs occur in the assembly part of the actuator exit or not and if the actuator is smoothly operated e Check if foreign matters and wire get caught in the actuator exit s operation 2 If the paper is stuck in the fuser disassemble the fuser and remove the jammed paper and clean the surface of the pressure roller with dry gauze 3 Remove the jammed paper after disassembling the fuser Clean the surface of the pressure roller with dry gauze e Remove the toner particles stained on the rib e Check the assemblage and performance of the exit Samsung Electronics Service Manual 65 Troubleshooting 6 2 5 Multi Feeding e Description Multiple sheets of paper are fed at once Check and Cause Solution 1 Solenoid malfunction the solenoid does not work properly Perform DCU Diagnostic Code 06 2 Pad Friction is contaminated with foreign matter oil 3 The face of paper is blended 6 2 6 Paper rolled in the Fuser
5. 6 3 10 Vertical Line Getting Curved e Description When printing vertical line gets curved Check and Cause Solution 1 If the supply of 24v is unstable in the Main Control board 1 Replace LSU linking with LSU check drive by DCU Mode LSU Check 05 LSU Motor on 2 Replace the Main Control board ga Service Manual Samsung Electronics Troubleshooting 6 4 Bad Software Environment 6 4 1 The printer is not working 1 e Description While Power turned on the printer is not working in the printing mode Check and Cause Solution 1 Run Self Test Mode Turn the power on while pressing the test printing button for 2 or 3 seconds before printing works 2 Check if the PC and the printer is properly connected and the toner cartridge installed 3 Printing is nor working in the Windows 4 Check if the printer cable is directly connected to periph eral devices 1 Check the power of the printer and perform the Self Test If the test printing works that means no prob lems in the printer itself If the test printing does not work that means bad functioning of the printer not because of software Perform DCU to check the Error Status 2 Replace the printer cable If the problems not solved even after the cable replaced check the amount of the remaining tone ao Check if the connection between PC and printer port is proper If you use windows check if the printer dri v
6. interval unremovable in 1 cleanly remove foreign substances stuck on the OPC location equivalent to black spots and white spots with a dry duster 3 The transfer roller guarantees 50 000 sheets printing If the roller s life is expired replace it 4 In case of 37 7 mm interval unremovable in 1 take measures as to replace the develop er cartridge and try to print out 5 Clean the inside of the set against the paper particles and foreign matter in order not to cause the trouble ga Service Manual Samsung Electronics Troubleshooting 6 5 5 Light Image e Description The printed image is light with no ghost Check and Cause Solution 1 Develop roller is stained when the toner of developer cartridge is almost con sumed 3 Bad contact caused by the toner stains between the high voltage terminal in the HVPS and the one in the set 4 Abnormal output from the HVPS 6 5 6 Dark Image or a Black 2 Ambient temperature is below than 10 C 1 Check if the Toner Save mode is off 2 Replace the developer cartridge and try to print out 3 Wait 30 minutes after printer is powered on before you start printing 4 Clean up the contaminated area by the toner 5 Replace the HVPS if the problems are not solved by the above four directions e Description The printed image is dark Check and Cause Solution 1 No charge voltage in the engine board P
7. necessary move the printer 4 Ensure the printer is not positioned in direct sunlight If it is unavoidable use a curtain to shade the printer 5 Ensure the printer is installed in a clean dust free environment Move the printer to clean area if necessary 6 Some industrial or cleaning processes give of fumes which can affect the printer Move the printer away from this type of air pollution 3 Check paper type 1 Use only paper which is of a suitable quality weight and size See the user guide 4 Check the overall condition of the printer 1 Is the printer properly maintained Clean the Paper Transport Passages Any rollers with dirt surfaces should be cleaned or replaced Service Manual 63 Samsung Electronics Troubleshooting 6 2 Bad discharge 6 2 1 Wrong Print Position Description Printing begins at wrong position on the paper Check and Cause Solution Wrong sense time caused by defective feed sensor Replace the defective actuator actuator 6 2 2 JAM 0 e Description 1 Paper is not exited from the cassette 2 Jam 0 occurs if the paper feeds into the printer BIN PATH 1 Check the Solenoid by using DCU diagnostic mode 1 Replace the solenoid 06 2 Check if the pad is loose due to bad sealing of the 2 Replace the side pad Assembly L or R if necessary side pad 3 Check the surface of the roller pickup for foreign mat 3 Clean with soft clo
8. vertical voids in the image Digita Printer Digita Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution Foreign matter stuck onto the window of internal lenses of LSU mirror 2 Foreign matter or toner particles between the developer roller and blade In case the life of the developer has been expired white lines or light image occur in front of the image 3 It may occur when Burr and foreign sub stances are on the window of the devel oper frame 4 If the fuser is defective voids occur peri odically at the top of a black image Foreign matter stuck onto the window Clean the LSU window with recommend ed cleaner IPA Clean the window with a clean cotton swab 2 Foreign matter in the LSU Open the cover of LSU and clean with a cotton swab on the surface of the reflex mirror 3 No 3 Remove the foreign matter and burr of the exposure window Developer cartridge 4 No 4 Open the front cover and check ribs that corresponds to the position of the voids Remove if found 5 If the problems are not solved replace the developer cartridge Samsung Electronics Service Manual Troubleshooting 6 5 3 Horizontal Black Band e Description Digital Pri Digital Printer 1 Dark or blurry horizontal stripes occur in the printing periodically They may not occur periodically Check and Cause Solution 1
9. Bad contacts of the voltage terminals to 1 Clean each voltage terminal of the Charge i developer Supply Develop and Transfer roller Digital Printer remove the toner particles and paper par Digital Printer ticles 2 The rollers of developer may be stained 2 Clean the right Gear that has relatively OPC Drum 75 5mm small gap of the teeth in the OPC Charge Roller 37 7mm Supply Roller 47 5mm Develop Roller 35 2mm Transfer Roller 46 2mm Heat Roller 63 9mm 3 If the malfunction persists replace the Pressure Roller 75 4mm developer 6 5 4 Black White Spot e Description 1 Dark or blurry black spots occur periodically in the printing 2 White spots occur periodically in the printing Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1 If dark or blurry black spots occur periodi Cally the rollers in the Developer may be contaminated with foreign matte or paper particles Charge roller 37 7 mm interval OPC drum 75 5 mm interval 2 If faded areas or voids occur in a black image at intervals of 75 5 mm or black spots occur elsewhere the OPC drum surface is damaged ao If a black image is partially broken the transfer voltage is abnormal or the trans fer roller s life has expired 1 Run OPC cleaning Mode Print and run the Self test 2 or 3 times 2 In case of 75 5 mm
10. Error message from insufficient memory 3 Delete the unnecessary files to secure enough The printing job sometimes stops or due to insufficient space of the hard disk and start printing job again virtual memory but it actually comes from the insuffi cient space of the hard disk Service Manual Samsung Electronics Troubleshooting 6 4 4 SPOOL Error To spool which stands for simultaneous peripheral operations online a computer document or e Description task list or job is to read it in and store it usually on a hard disk or larger storage medium so that it can be printed or otherwise processed at a more convenient time for example when a printer is finished printing its current document Check and Cause Solution 1 Insufficient space of the hard disk in the directory assigned for the basic spool 2 If the previous printing error not solved 3 When expected to collide with other program 4 When an application program or the printer driver is damaged 5 When some files related to OS are damaged or virus infected 6 Memory is less than suggested one A How to delete the data in the spool manager 1 Delete the unnecessary files to provide more space to start printing job 2 If there are some files with the extension name of inl Delete them and Reboot the Windows to restart printing job 3 Shut down all other programs except the current one if possible 4 D
11. Replace the Main Control board 6 3 4 Paper Empty e Description The paper lamp on the operator panel is on even when paper is loaded in the cassette Check and Cause Solution 1 Bending or deformation of the actuator of the paper sen sor 2 The function of the engine board is defective Perform DCU mode Perform DCU diagnostic code 8 1 Replace the defective actuator 2 Replace the engine board 6 3 5 Paper Empty without indication e Description The paper lamp on the operator panel does not come on when the paper cassette is empty Check and Cause Solution 1 Bending or deformation of the actuator of the paper sen sor 2 The function of the engine board is defective Perform DCU mode Perform DCU diagnostic code 8 1 Replace the defective actuator 2 Replace the engine board Samsung Electronics Service Manual 69 Troubleshooting 6 3 6 Cover Open e Description The ERROR lamp is on even when the print cover is closed Check and Cause Solution 1 The Hook Lever in the top cover may be defective 2 Check the connector Engine B d sHVPS and circuit of the cover switch department in the Main Control board Perform DCU mode If Error state 64 occurs Check the related codes of the Cover Open Error 1 Replace the hook lever if defective 2 Check the insertion of the Cover Open S W Connect 3 Replace the Main Control board or C
12. Troubleshooting 6 Troubleshooting 6 1 Checking Symptoms Before attempting to repair the printer first obtain a detailed description of the problem from the customer No Power Power Module error Main PBA Refer to Chapter 4 4 Refer to Solution of Image Problem Service Manual 6 Samsung Electronics Troubleshooting 6 1 1 Basic Check List 1 Check the Power e Does Warming Up appear on the display gt If not check power cable switch or SMPS gt Does the wall socket work e Do the Motors or other components initialize listen for main motor fan and LSU sounds gt If not or there are none of the normal startup sounds check cable switch or SMPS gt Does the wall socket work 2 Check the LED of Panel e Is there On Line LED ON gt If not check power cable switch SMPS or Main board gt Does the wall socket work e Is the abnormal Lamp gt Check the main PBA and cable harness 3 Check the Paper Path e Is there a Paper Jam gt Remove any paper fragments caught in the paper path e Paper Jam occurs repeatedly at a specific point in the Paper Path gt Open the fuser cover Jam clear gt Dismantle the machine and carefully inspect the region where the jam occurs Especially check if paper fragments are caught in the Fuser 4 Print the Information Page Configuration e Try printing a test page fro
13. aminated toner particles on the roller Digital Printer and clean the foreign matter between Thermistor and Heat roller Caution can be deformed WWG E9 10 G17 Digital Printer 6 5 13 Stains on the Face of Page e Description The background on the face of the printed page is stained oe ee Check and Cause Solution Digital Printer DigitalsPrintet 1 pee due to improperly sealed 1 Replace the developer cartridge Digital Printer l ai Digital Printer 2 If the transfer roller is contaminated stains 2 If the transfer roller is contaminated run PC Digital Printer on the face of page will occur Cleaning Mode Print 2 or 3 times bi And perform Self Test 2 or 3 times to remove contamination 6 22 Service Manual Samsung Electronics Troubleshooting 6 5 14 Stains on Back of Page e Description The back of the page is stained at 47 mm intervals Check and Cause Solution 1 Transfer roller is contaminated 1 Perform the OPC Cleaning Mode Print 2 or 3 times Run Self Test to remove the conta mination of the transfer roller Digital Printer Digital Printer Digital Printer 2 Pressure roller is contaminated 2 Replace the transfer roller if contaminated severely 3 Disassemble the fuser and clean the H R Heat Roller and P R Pressure roller And check the area between H R and Thermistor If contaminated clean the area not to b
14. e deformed 6 5 15 Blank Page Print out 1 Description Blank page is printed Check and Cause Solution Bad ground contacts in OPC and or devel Remove contamination of the terminals of the oper developer and the unit 6 5 16 Blank Page Print out 2 1 Blank page is printed e Description 2 One or several blank pages are printed 3 When the printer turns on several blank pages print Check and Cause Solution 1 Bad ground contacts in OPC and or 1 Remove contamination of the terminals of developer the developer 2 Abnormal solenoid 2 Perform the engine self test using DCU to check if the Solenoid is normal refer to code 06 3 If not solved by the above directions 1 2 Replace the engine board 4 Turn the power off delete the data of PC and try printing again Service Manual 6 23 Samsung Electronics
15. elete the printer driver completely and reinstall it 5 After rebooting the computer check for viruses restore the damaged files and reinstall the program to do the printing job 6 Add up enough memory to the PC In the spool manager the installed drivers and the list of the documents waiting to be printed are shown Select the document to be deleted and check the delete menu If you intend to delete the current document being printed the data being transferred to the printer will be put out and then the document is removed Before choosing the document the menu is still inactive Or put the document out of the list and repeat the routine as in the above or finish the spool manager ga Service Manual Samsung Electronics Troubleshooting 6 5 Bad image 6 5 1 Vertical Black Line and Band e Description 2 Dark black vertical band occur in the printing 1 Straight thin black vertical line occurs in the printing Check and Cause Solution 1 Damaged develop roller in the Developer Deformed Doctor blade or cleaning blade 2 Scratched surface of the discharge roller in the developer 3 Partly depression or deformation on the surface of the transfer roller 6 5 2 Vertical White Line 1 If causes 1 and 2 occur in the developer cartridge replace the developer and try to print out 2 Replace the transfer roller if occurred as No 3 Description White
16. er in the controller is set up If the printer driver is properly set up check in which program the printing is not working The best way to find out is to open the memo pad to check the function of printing If it is not working in a certain program adjust the setup the program requires Sometimes the printout is normal within the Windows basic programs but it s not work ing in a particular program In such case install the new driver again If not working in the Windows basic program Check the setup of the port of CMOS is on ECP And check the address of IRQ 7 and 378 4 If the scanner needs to be connected to the printer first the remove the scanner from the PC to see if the printer is properly working alone Samsung Electronics Service Manual gg Troubleshooting 6 4 2 The printer is not working 2 e Description After receiving the printing order no response at all or the low speed of printing occurs due to wrong setup of the environment rather than malfunction of the printer itself Check and Cause Solution 1 Secure more space of the hard disk 2 Printing error occurs even if there is enough space in the hard disk 3 Check the parallel port related items in the CMOS Setup 4 Reboot the system to print 1 N Not working with the message insufficient printer memory means hard disk space problem rather than the RAM problem In this case provide more space for the hard disk
17. erform DCU diagnostic code 01 2 Charge voltage is not turned on due to the bad contacts between power supply in the side of the Developer and charge terminal of HVPS 1 Clean the high voltage charge terminal 2 Check the state of the connector which connects the engine board and HVPS 3 Replace the HVPS if not solved by the above direction 1 and 2 Samsung Electronics Service Manual 6 19 Troubleshooting 6 5 7 Uneven Density e Description Print density is uneven between left and right Digita Digita Digita Digita Digita Check and Cause Solution k The pressure force on the left and right springs of the transfer roller is not even the springs are damaged the transfer roller is improperly installed or the trans fer roller bushing or holder is damaged 2 The toner level is not even on the devel oper roller due to the bad blade 1 Replace both the left and right Spring Holder 2 Occur in the developer cartridge replace the developer and try to print out 6 5 8 Background e Description Light dark background appears in whole area of the printing Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1 Does character exist less than 2 per a page and hasn t it been used long time 2 Does recycle paper be used 3 Has the life span of the developer ended
18. m a computer gt f there is an error check cables and driver installation 5 Check the Print Quality els there are a Print Quality Problem gt Refer to section 6 5 Page 6 17 6 Check consumables toner etc Using the keys print the Test Pattern gt Expected life of various consumable parts compare this with the figures printed and replace as required 62 Service Manual Samsung Electronics Troubleshooting 6 1 2 Initial Inspection 1 Check Power part 1 The printer does not work no matter how long you wait A Is the Power Switch printer and wall socket turned on B Is the Power Cord connected to the printer correctly C Is the Power cord connected to the wall socket correctly D Is wall socket working E Is the unit rated at the same voltage as the supply 2 Does the Fan work when power is turned on A Check the connectors on the SMPS B Check the fuses in the SMPS F1 2 Check the Installation Environment 1 Ensure the installation surface is flat level and free from vibration If necessary move the printer 2 Ensure that the temperature and humidity of the surroundings are within specification If necessary move the printer 3 Ensure that the printer is position away from any air conditioning or other heating or cooling equipment Also ensure that is not positioned in a direct draft from any air conditioning fan or open window If
19. not work and breaks away melt away When printing motor breaks away from its place due to defective fuser gear Check and Cause Solution 1 Check if the thermostat AC wire and Heat Lamp is open 2 Check if the thermistor sensor is in place 3 Check if the heat lamp works properly 4 Check if the overheat circuit works properly 5 The fuser gear is defective due to melting away 1 If the thermostat is open replace the fuser and check following items 2 If the thermistor sensor device is located deep in the sponge replace the fuser 3 Check if the circuit of overheat mode works properly 4 Run DCU mode Perform DCU diagnostic code 10 5 Replace Fuser 6 3 2 All LEDs blinking Scan Error e Description 1 All lamps on the operator panel blink Check and Cause Solution DCU Mode Perform DCU diagnostic code 05 If the DCU error code 95 is displayed replace LSU Replace LSU If you cannot solve the problem after you replace LSU replace the main board 68 Service Manual Samsung Electronics Troubleshooting 6 3 3 Not function of the gear of the fuser due to melting away e Description The motor breaks away from its place due to gear melting away Check and Cause Solution DCU Mode Check if the Error States 60 62 68 occur Check the operation of Fuser Erasing Lamp On Off with the Error Code Check 10 1 Replace the Fuser 2
20. over Open SM 6 3 7 No lamp on when the cover is open e Description The ERROR lamp does not come on even when the printer cover is open Check and Cause Solution 1 Check the connector and circuit of the cover switch department in the Main Control board Perform DCU mode If Error state 64 occurs Check the related codes of the Cover Open Error 1 Check the insertion of the Cover Open S W Connect 2 Replace the Main Control board or Cover Open SM gJ Service Manual Samsung Electronics Troubleshooting 6 3 8 Defective motor operation e Description Main motor is not driving when printing and paper does not feed into the printer resulting Jam 0 Check and Cause Solution 1 Motor harness or sub PCB may be defective 2 Perform DCU diagnostic code 00 and Check the motor operation 6 3 9 No Power 1 Check the motor harness replace it if defective 2 Replace the SMPS if necessary e Description When system power is turned on all lamps on the operator panel do not come on Check and Cause Solution 1 Check if the power input and SMPS output are normal 2 Check the inferiority of LED Panel on the front cover if the LED of Panel does not appear after normal warming up 1 Replace the power supply cord or SMPS 2 Replace the control board 3 Replace the LED panel Samsung Electronics Service Manual 6 14 Troubleshooting
21. th dampened with IPA Isopropyl ter Alcohol or water 4 If the paper feeds into the printer rand Jam 0 occurs 4 Replace the SMPS HVPS or Sensor perform DCU to check feed sensor of the engine board 6 4 Service Manual Samsung Electronics Troubleshooting 6 2 3 JAM 1 BIN PATH e Description 1 Recording paper is jammed in front of or inside the fuser 2 Recording paper is stuck in the discharge roller and in the fuser just after passing through the Actuator Feed Check and Cause Solution 1 If the recording paper is jammed in front of or inside the fuser Perform DCU diagnostic code 08 2 If the recording paper is stuck in the discharge roller and the fuser just after passing through the Actuator Feed Feed Actuator may be defective 1 Replace the SMPS 2 Reassemble the Actuator Feed and Spring Actuator if the returning is bad 6 2 4 JAM 2 BIN PATH e Description 1 Recording paper is jammed in front of or inside the fuser 2 Recording paper is stuck in the discharge roller and in the fuser just after passing through the Actuator Feed Check and Cause Solution 1 If the paper is completely fed out of the printer but Jam 2 occurs Exit sensor is defective e After the paper is completely discharged actuator Exit should return to the original position to shut the photo sensor Sometimes it takes longer hour than it should and does not return
22. time and replace it 5 Wait about 1 hour after power on before using printer e Description Ghost occurs at 75 5 mm intervals of the OPC drum in the whole printing When printing on card stock or transparencies using manual feeder Digital Printer Digital Printer WLUG G Digital Printer Check and Cause Solution When printing on card stock thicker than nor mal paper or transparencies such as OHP higher transfer voltage is required Select Thick Mode on paper type menu from the software application and after using return ing to the original mode is recommended Samsung Electronics Service Manual 6 24 Troubleshooting 6 5 11 Ghost 3 e Description White ghost occurs in the black image printing at 47 5mm intervals Check and Cause Solution Digital Printer 1 The life of the developer may be expired 1 Occur in the developer cartridge replace the developer and try to print out WG Ly Digital Printer Digital Printer 2 The abnormal voltage and bad contact of 2 Check the approved voltage of the supply the terminal of the supply roller roller and contact of the terminal and adjust if necessary 6 5 12 Ghost 4 e Description Ghost occurs at 47 5mm or 63 9mm intervals A Check and Cause Solution Digital Printer ee l The temperature of the fuser is maintained 1 Disassemble the fuser and remove the high cont
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