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HP LaserJet 1200 1220 Service Manual

1. 73 5 Removal and replacement Chapier COMMING eaae ia dues pA GANON NI NG kada die oe oes ha TG ANG arte 75 Removal and replacement strategy 0 0 eee 77 PCOUNCOIOOIS lt cag evaraivitege nd 3 4udee we ere ed DRA ew ek 77 Before performing service 0 eee 78 Toner ca Oee data cg AA NA bucen aus d hades Gh PA DAANG NGA ee DN NEA 78 Parts removal order aaa 79 4 Contents EN LEN SIGS COVE a ters bA NA ANAN AA KNA NAG pA DAG a so Bee ae 80 Optional copier scanner a 81 BACK COVE AA AP AA AA 82 Right side cover a 84 LOG COV vaacad dates AKN BA Chee NA ola ABA DAA KNA NAA 87 Control panel assembly ee eee 88 Front cover assembly 3 tice naka hh AN PAD KG BERTA KAPIT iw eee PAL 89 Internal assemblies eee eee ene 96 Transiter TOE oc kaa aa dade bka pe beds DAA ph eed San ee Sede ares 96 Formatter ee ee eee eens 97 Laser scanner assembly n nunnana ee eee ees 99 Fuser assembly ccc eee ee ee eens 101 OUWULTOIEIS yc seins boo ee Soe a ee 4 6 bee boas oe bes dae 105 MOL 62 04 od cand eos cu eee Beas oe oe bee DAA os ee ea oe eee ee ae 107 DOlGNOIO AAP Ge beers ast AA oe Pe ee E ee eee ea 108 Fan assembly 0 0 ccc ee eee eee ene 110 Right plate assembly 0 0 0 ee eens 112 Pickup assembly nnana ce eee eens 114 PICKUP roller Sala wa ae pede 2 otek bee ra ANG ee hee a 117 Paper lift plate assembly 0 0 0 ees
2. Paper lift plate assembly Left plate assembly 0 0 0 0 0 cee Bottom assemblies 0000 eee eee eae 76 Chapter 5 Removal and replacement EN Removal and replacement strategy WARNING CAUTION CAUTION EN This chapter documents the removal and replacement of field replaceable units FRUs only Replacement is generally the reverse of removal Occasionally notes are included to provide directions for difficult or critical replacement procedures Unplug the power cord from the power outlet before attempting to service the printer If this warning is not followed severe injury can result Certain functional checks during troubleshooting must be performed with power supplied to the printer However the power supply should be disconnected during removal Never operate or service the printer with the protective cover removed from the laser scanner assembly The reflected beam although invisible can damage your eyes The sheet metal edges of the printer can be sharp Use caution when working on the printer Some printer parts are electrostatic discharge ESD sensitive Always perform service work at an ESD protected workstation To install a self tapping screw first turn it counterclockwise to align it with the existing thread pattern then carefully turn it clockwise to tighten Do not overtighten If a self tapping screw hole becomes stripped repair the screw hole or replace
3. ccc eee ee 41 Replacing the printer separation pad AA 43 Replacing the copier scanner separation pad 45 Cleaning the equipment cc ee eens 46 Cleaning the print path 0 0 0 ce eens 47 Cleaning the toner cartridge area 6 AA 48 Cleaning the printer pickup roller 2 0 0 0 a 49 Cleaning the printer separation pad 2 0 cee ee 50 Cleaning and recalibrating the copier scanner 51 Cleaning the scanner path ccc eens 51 4 Operational overview Chapter COnientsS nc22c sccestdesenwhudegeseaanebareGeandea UAE E GANG 53 SENADO bee 54 F rmatter SYSTEMI ass 44 td AA BG eRe dd es Oe DA KHA MAGANG MA HABA 55 Control panel ot 2 agaran am AG KA Sis eeat KAMA WAGAS LAM Suse eae a 56 DEMO AA AA 56 MElhanarbmaa ma om park KO NEAR Gras e ADAN ATAMNA DAAN Ee 56 ENRON CA NO PAP PA AE 56 PJLOVSrVI W na bhp ann x ose pedo eee NA GAD ah eee en He ea Re 57 Printer IUNGUONS 2 ucceconeeesadeenstcccaeees caches eS a A DAM NAYANG 58 Engine control unit power system 1 eee 59 Image formation system 1 eee ee ees 64 Printer paper feed system eee ees 67 Jam detection eee eee 69 Optional copier scanner 0 0 cee eee eens 71 Optical SYSTE seess sedbuaed ADA DA boda hoa dN DAD UADASA ING tees 71 Document pickup and feed systems 1 0 2 eee 71 Basic sequence of operation formatter to printer
4. If you want to clean the separation pad rather than replacing it follow the instructions below 1 Remove the separation pad as described in steps 1 through 5 of Replacing the printer separation pad on page 43 2 Daba lint free cloth in isopropyl alcohol and scrub the pad WARNING Alcohol is flammable Keep the alcohol and cloth away from an open flame Before you close the printer and plug in the power cord allow the alcohol to dry completely 3 Using adry lint free cloth wipe the pad to remove loosened dirt 4 Allow the pad to dry completely before you reinstall it in the printer To reinstall the pad see steps 6 through 8 of Replacing the printer separation pad on page 43 EN Cleaning and recalibrating the copier scanner Recalibrating the copier scanner The optional copier scanner automatically calibrates to the white sheet opposite the image sensor at the beginning of each scan or copy job Keep the white sheet clean to make sure the optional copier scanner calibrates correctly See Cleaning the scanner path on page 51 for information about cleaning the white sheet Cleaning the scanner path You might have to clean the copier scanner if e You can smudge the ink on documents you scan e The documents have excessive amounts of dust or dirt on them e There are smudges or other marks on documents or scans of documents e The scanned output has lines or defects that were
5. To reinstall Make sure that the motor is in the correct position The connector should face the inside of the printer Internal assemblies 107 Solenoid 1 Remove the left side back and right side covers see pages 80 through 86 2 Unplug five cable connectors callout 1 from the ECU and separate the solenoid cable from the other four cables 3 Carefully unwind the solenoid cable from the cable guides callout 2 Figure 52 Removing the solenoid 1 of 2 108 Chapter 5 Removal and replacement EN 4 Remove the screw callout 1 on the solenoid 5 Gently thread the solenoid cable through the hole callout 2 in the right side plate 6 Lift the solenoid off of the printer Figure 53 Removing the solenoid 2 of 2 To reinstall It might be easier to remove the ECU pan see page 120 before rerouting the cables through the hole callout 2 in the right side plate EN Internal assemblies 109 Fan assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Unplug the five cable connectors callout 1 from the ECU and separate the fan cable from the other four cables 3 Carefully unwind the fan cable from the cable guides callout 2 Figure 54 Removing the fan 1 of 2 110 Chapter 5 Removal and replacement EN Remove two screws callout 1 Remove the fan assembly Gently thread the fan cable through the hole callout 2 in the right side plate 7 Lif
6. 165 ASSEMDIY IOCALIONS aaa BAKA tite odes bu a Chee etal hen 172 CONG ch teres vee hy MG an Gs ie o a Bag ka fe de sa were ee Bese teh O een 174 EN Figure 89 Figure 90 Figure 91 Figure 92 Figure 93 Figure 94 EN Internal components 1 0f2 eee 176 Internal components 2 Of 2 ee 178 Electrical components 00 00 ccc ee eee 180 Paper pickup assembly 1 of 2 0 0 0 ee 182 Paper pickup assembly 2 of 2 0 cc ees 184 FUSEMASSCINDIY nma tae a er eaa NAAN Ka NAG DINIG Chae he 186 Figures 9 10 Figures EN Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 EN Physical specifications eee ees 16 Environmental specifications ee 16 Power specifications ccc eee 17 Performance of HP LaserJet 1200 printer 17 Performance of optional copier scanner 17 Print operating acoustical emissions specifications 18 Copy operating acoustical emissions specifications 18 SKEW Specifications os stearan Iha N AN Sage eee aba oe ees 18 Control panel light
7. Part number RA0 1177 000CN Description Cover front Qty RA0 1178 000CN Cover right side RA0 1179 000CN Cover left side RA0 1183 000CN Cover connector RG0 1016 000CN Back cover assembly RG0 1017 000CN Top cover assembly RG0 1015 000CN Toner cartridge door assembly CO N DA AI WwW N 7121 8042 HP Jewel RY7 5082 000CN Screw kit contains a full set of screws for the LaserJet 1200 product Covers 175 Internal assemblies Internal components 1 of 2 J905 Figure 89 Internal components 1 of 2 176 Chapter 7 Parts and diagrams J802 EN EN Part numbers Table 28 Internal components 1 of 2 Ref Part number RA0 1181 000CN Description Shutter guide Qty RA0 1182 000CN Shutter lever RA0 1169 000CN Compression spring RG9 1486 000CN Laser scanner assembly RG0 1074 000CN Cable laser scanner RG0 1020 000CN Pickup gear assembly RA0 1184 000CN Cover right support CO N DA B DI N RF0 1008 000CN Pickup roller CO RA0 1172 000CN Gear 17T CC O RG9 1483 000CN Transfer roller NG maa RG0 1002 000CN Left plate assembly NO RG0 1024 000CN Control panel assembly DT oO RH2 5440 000CN Cable laser scanner flat flexible ah D C7857 60001 Formatter
8. 118 Removing the left plate assembly 2 0 0 0 119 Removing the ECU pan 1 of 4 0 0 ee 120 Removing the ECU pan 2 of 4 0 2 0 ee 121 Removing the ECU pan 3 of 4 0 0 cee 122 Removing the ECU pan 4 0f4 aaa 123 Removing the paper feed assembly 1 0f4 124 Removing the paper feed assembly 2 0f4 125 Removing the paper feed mechanism 3 0f4 126 Removing the paper feed mechanism 4 0f4 127 Control panel location 0 0 0 00 cee ee 132 ENGINGSCSU SWINGIN oy amit aang ahah a dea Skee Mark wis Be GANA 149 Locating connectors for the heating element check 152 Toner cartridge high voltage connection points right side 153 Toner cartridge high voltage connection points left side 153 High voltage connector assembly right side 154 High voltage connector assembly left side 154 JVEMIGING OW30l sh rm 0 ana N ANAN NAAT NANANG Mel AG DENG AA 155 Self test PAGE a die me a won PAA KA ahd eh BA a eee a a 160 Repetitive image defect ruler 0 eee 161 Main wiring 1 Of 2 0 eee 162 IAI WIIG 220 2 sana gam Rien aod ich Se a oh Ge ee ea EGEA 163 Locations of printer connectors 0 00 eee eee 164 Locations of copier scanner connectors 164 Locations of LEDs jumpers and switches
9. Each table lists the reference designator the associated part number for the item and a description of the part Parts that have no reference designator or part number are not field replaceable units and cannot be ordered While looking for a part number pay careful attention to the voltage listed in the description column to make sure that the part number selected is for the correct printer model hardware The printer has three common fasteners See table 25 for a description of these screw types Table 25 Common fasteners Example Description Screw machine truss head Screw star Taki Screw self tapping EN How to use the parts lists and diagrams 171 Assembly locations Printer trays 4 optional copier scanner Assembly locations Figure 87 EN 172 Chapter 7 Parts and diagrams EN Part numbers Table 26 Printer trays and optional copier scanner Ref Part number Description Qty 1 RG0 1013 000CN Printer pickup tray assembly 1 2 RG0 1014 000CN Paper pickup cover assembly 1 3 R37 5020 000CN Optional copier scanner 1 4 RG0 1069 000CN Copier scanner pickup tray 1 assembly 5 RG0 1070 000CN Face down tray assembly 1 6 RY7 5055 000CN Copier scanner separation pad 1 Assembly locations 173 Covers Covers Figure 88 EN 174 Chapter 7 Parts and diagrams EN Part numbers Table 27 Covers Ref
10. Locations of LEDs jumpers and switches 165 Chapter contents 129 Basic troubleshooting Table 13 Basic troubleshooting Verification steps 1 Does the printer turn on successfully When the product is connected to a grounded power source the printer motor should rotate for approximately five seconds Possible problems Solutions No power 1 Verify that the product is plugged in 2 Verify that the power cable is functional and that the power switch is on 220v only 3 Verify that FU102 on the ECU is not open 4 If all of these conditions are correct replace the ECU Printer motor does not 1 Verify that the toner cartridge is present rotate See Toner cartridge on page 78 for more information 2 Verify that the printer door is closed 3 Verify that media is loaded in the main input tray 4 Verify that the printer paper path and door sensors are functional 5 Verify that the motor connector is seated into the ECU 6 Verify that the motor is correctly mounted on the printer chassis 7 lf all of these conditions are correct replace the ECU 8 If after replacing the ECU the printer motor still does not rotate replace the motor 2 Is the product ready The control panel should function without error light patterns Control panel displays an Consult the list of control panel light error light pattern patterns later in this chapter to identify and co
11. Remarks Detects whether or not the cartridge is installed STBY Standby From the end of the WAIT period or the LSTR period until the pickup command is input from the formatter Or from the end of the LSTR period until the printer is turned off To keep the printer ready to print INTR Initial Rotation Period After the pickup command has been input from the formatter until the media reaches the paper top sensor PS402 To stabilize the photosensitive drum sensitivity in preparation for printing Also to clean the primary charging roller PRINT Print From the end of the initial rotation until the primary voltage goes OFF To form images on the photosensitive drum based on the VIDEO signals VDO VDO input from the formatter and to transfer the toner image onto the media LSTR Last Rotation Period After the primary voltage goes OFF until the main motor stops rotating To deliver the last page Also to clean the primary charging roller When the pickup command is input from the video controller the printer enters the INTR period immediately after the end of the LSTR period EN Optional copier scanner 73 U LALA Tm SSS po RSS INAY RAINY a SSS Sw 9 001 Apeauye si aunyeseduue J0 SIWU98U UBYM pa noaxXa JOU SI JOJJUOD 9 001 ZAION DoQO k SOYIEA BINJeIOAW9 JO sIWIBY BY UBYM 44O POEUN s Jajgay SUL L JON saul qg UOISsILUe pa
12. and then plug the printer back in 2 Replace the optional copier scanner See Optional copier scanner on page 81 1 Unplug the printer and plug it back in 2 Disconnect the I O cable and print a self test page If the self test is successful reconnect the I O cable 3 If the error persists replace the formatter PCA See Formatter on page 97 EN Note EN Checking the toner cartridge Image formation defects are many times the result of problems in the toner cartridge If there is any doubt always replace the toner cartridge before troubleshooting image defects Use the following checklist to make sure that the toner cartridge is still operable O0 Make sure that the toner cartridge is seated properly O Inspect the toner cartridge for toner level O Check the expiration date stamped on the toner cartridge box O Check the toner cartridge to see if it has been disassembled or refilled O Inspect the toner cartridge to see if toner is leaking through worn seals O Check the surface of the photosensitive drum in the cartridge to see if it has been damaged or scratched Touching the drum contaminates the photosensitive surface and can cause spotting and image defects O Blurred areas on printed pages indicate that the photosensitive drum in the cartridge has been overexposed to light Because overexposure to light causes permanent damage to the photosensitive drum the cartridge should be
13. and lift it up callout 3 to remove it Figure 25 Removing the optional copier scanner EN Covers 81 Back cover 1 Remove the left side cover see page 80 2 Open the straight through output door 3 Remove two screws callout 1 from the back of the printer N nG Ga ti aLL TTT Figure 26 Removing the back cover 1 of 2 82 Chapter 5 Removal and replacement EN 4 Press down and hold the two release levers callout 1 and pull the cover off of the printer Note The back cover has two tabs not shown one on each side of the printer Step 4 releases these two tabs Figure 27 Removing the back cover 2 of 2 EN Covers 83 Right side cover 1 Open the toner cartridge door 2 Remove the back cover see page 82 3 Remove one screw callout 1 on the back of the printer Figure 28 Removing the right side cover 1 of 3 84 Chapter 5 Removal and replacement EN 4 Lift the right side of the printer and release the tab callout 1 on the bottom of the cover Figure 29 Removing the right side cover 2 of 3 EN Covers 85 5 While continuing to press the release tab grasp the top of the cover and rotate it away from the printer Figure 30 Removing the right side cover 3 of 3 86 Chapter 5 Removal and replacement EN Top cover 1 If the printer has the optional copier scanner attached remove it see page 81 2 Remove the left side back and right side covers see
14. 118 Left plate assembly 0 0 eee ees 119 Bottom assemblies 0 ce eee ene 120 PCW Od AAP sce ss toes eas 120 Paper feed assembly ccc ee eee eens 124 6 Troubleshooting Chapter CONIENS aes resan ee bbe new dees an eee eee ed oes A 129 Basic troubleshooting a 130 MONG ana ae E NA KAKA LAKAD WADE ee ee ke wo NG 132 Control panel light messages ce eee eee 132 Fatal error secondary messages 0 ee ees 135 Checking the toner cartridge n a aana naa aaan 137 Solving image quality problems nananana 138 Solving paper feed problems cee eee eee 146 Solving print paper feed problems 0 0000 cece eee eee 146 Solving copying and scanning paper feed problems 148 Functional checks aaa aaa Wa maawa wb eee Ee a ee eR a DLA NG 149 EIN AAP AA PA 149 Half self test functional check 0 0 ees 150 Drum rotation functional check 00 ee ees 151 Heating element check 0 0 0 0 ccc ee eens 152 High voltage power supply check 00000 eee ees 153 Paper path check maa a cars si dee Gases oo whe or oe eae 155 EN Contents 5 Service mode functionS aa 156 NVRAM initialization cold reset 0 00 0 0 a 156 PJL software commands 0000 eee ee ee ee eee 156 TOUDIESHOOUNG 1001514 a pO NAKA PRA BA bate ee eee eee ee a 159 Internal reports 2 2 eee eee 159 Repetitive image defect ru
15. 600 dpi 24 bits per pixel bpp and contains a document feeder that holds up to 30 pages The printer prints 15 pages per minute ppm on letter size paper or 14 pom on A4 With 1200 dpi printing resolution the printer has exceptional text and graphics print quality The simple control panel and improved paper handling make this product very easy to use The printer s main input tray has a 250 sheet capacity for continuous multiple page printing Manual single sheet printing is possible through the priority input tray Both trays are center justified for all supported paper sizes The printer output bin holds up to 125 sheets The printer has a very fast first page out at less than 10 seconds The formatter board contains 8 MB of ROM 8 MB of RAM and an embedded 32 bit Coldfire V3 processor There is one DIMM slot available for DIMM expansion supporting an 8 MB 16 MB 32 MB or 64 MB DIMM The printer engine has a 1 000 average 10 000 peak page per month duty cycle For the printer the standard toner life is 2 500 pages and the high capacity toner life is 3 500 pages 14 Chapter 1 Product information EN EN Firmware description The firmware in the printer includes Enhanced PCL 6 with status readback 80 TrueType fonts plus Cyrillic Greek Hebrew and Arabic Pixel placement mosaic characters Memory Enhancement technology MEt with hardware compression and decompression The printer firmware also has REt and
16. EN Front guide assembly 1 From the front of the printer remove two screws callout 1 Removing the front guide assembly 1 of 3 Covers 93 2 Onthe right side release the lower tab callout 1 and the upper tab callout 2 Figure 38 Removing the front guide assembly 2 of 3 94 Chapter 5 Removal and replacement EN 3 On the left side release the upper tab callout 1 and the lower tab callout 2 4 Remove the front guide assembly HUL HUH j LAMANGAN KANA ALA Ca Ee FW ai yaa qJ ANI BE AA G ad a Figure 39 Removing the front guide assembly 3 of 3 EN Covers 95 Internal assemblies Transfer roller 1 Open the toner cartridge door and remove the toner cartridge see page 79 2 Use needle nose pliers to gently squeeze the two small tabs on the transfer roller 3 Lift the transfer roller up slide it to the right and lift it out of the printer Figure 40 Removing the transfer roller Note Do not misplace the small grounding spring that is underneath the right side of the transfer roller CAUTION Do not touch the black sponge portion of the transfer roller 96 Chapter 5 Removal and replacement EN Figure 41 EN Formatter 1 Remove the left side cover see page 80 2 If the optional copier scanner assembly is attached to the printer disconnect the copier scanner cable callout 1 from the formatter 3 Disconnect the two flat flexible cable
17. EconoMode functionality Scan capability includes 600 dpi and 24 bit color Introduction 15 Product specifications Table 1 Physical specifications Category Specification Height 253 mm 10 inches without optional copier scanner 416 mm 16 4 inches with optional copier scanner Depth 486 mm 19 1 inches Width 415 mm 16 3 inches Weight cartridge 7 3 kg 16 1 Ib without optional copier scanner installed 8 7 kg 19 2 Ib with optional copier scanner Table 2 Environmental specifications Category Operating environment printer plugged into an AC outlet Specification e Temperature 15 to 32 5 C 59 to 90 5 F e Humidity 20 to 80 relative humidity no condensation Storage environment printer not plugged into an AC outlet e Temperature O to 40 C 32 to 104 F Humidity 10 to 90 relative humidity no condensation 16 Chapter 1 Product information EN Table 3 Power specifications Category Power requirements Specification e 110 Vac 12 60 3 Hz 127 Vac 12 60 3 Hz Or e 220 Vac 12 50 60 3 Hz 240 Vac 12 50 3 Hz Note Power sources are not interchangeable Power consumption 285 W in continuous copy mode Power consumption 7 W idle Power consumption OW off Minimum 4 5 Aat115 V recommended circuit 2 3 A at 230 V capacity Table 4 Performance
18. Printed media is collected here in the correct sequence when the straight through output door is closed Use the output bin when printing normal and large collated documents Extend for long media Output bin Straight through output path The straight through output path is useful when you are printing envelopes transparencies heavy media or any media that tends to curl when printed Printed media exits in reverse order when the straight through output door is open Straight through output door Printed media does not stack when you use the straight through output path The media drops to the surface below unless you remove each sheet as it exits the printer Loading media 37 38 Chapter 2 Installation and operation EN EN Maintenance Chapter contents Life expectancies of consumables 40 User replaceable parts AA 40 Replacing the printer pickup roller 41 Replacing the printer separation pad 43 Replacing the copier scanner separation pad 45 Cleaning the equipment eee ee 46 Cleaning the print path a na nananana aaan 47 Cleaning the toner cartridge area 48 Cleaning the printer pickup roller 49 Cleaning the printer separation pad 50 Cleaning and recalibrating the copier scanner 51 Cleaning the scanner path 51 Chapter contents 39 Life expe
19. Replace the laser scanner See Laser scanner assembly on page 99 1 Check the motor cable connections 2 Replace the motor See Motor on page 107 1 Unplug the printer and do not plug it back in for at least ten minutes 2 Verify that the fuser connector and the thermistor connector are both firmly seated in the ECU 3 Perform a heating element resistance check See Heating element check on page 152 4 If the resistance readings are correct and the error persists replace the fuser See Fuser assembly on page 101 Errors 135 Table 16 Fatal error secondary messages continued Message Cause Formatter internal RAM or ROM error The RAM or ROM has an error Fan error Scan buffer error Miscellaneous interface error General fatal error 136 Chapter 6 Troubleshooting Solution 1 Unplug the printer and plug it back in 2 Unplug the printer remove any optional memory and turn the printer back on 3 Check the formatter cable connections 3 Replace the formatter PCA See Formatter on page 97 1 Check the fan cable connections 2 Replace the fan See Fan assembly on page 110 1 Unplug the printer remove and reattach the optional copier scanner and then plug the printer back in 2 Replace the optional copier scanner See Optional copier scanner on page 81 1 Unplug the printer remove and reattach the optional copier scanner
20. buttons 32 locating 22 196 Index control panel printer buttons and lights 29 light messages 132 locating 20 removing 88 troubleshooting 130 controller PCA See ECU copier scanner cleaning 51 connection locating 21 diagrams and part numbers 172 dimensions 16 errors 135 136 features 14 feeding problems troubleshooting 148 image quality troubleshooting 143 life expectancy 40 loading media 34 36 operations 55 71 path 72 removing 81 separation pad 40 45 specifications 17 testing 131 copier scanner door locating 22 COPY button 32 country of origin identifying 19 coverage toner 25 covers removing back 82 diagrams and part numbers 174 front 89 left side 80 right side 84 top 87 CPU formatter 55 crooked pages troubleshooting 141 146 crooked scans troubleshooting 148 curl troubleshooting 142 146 Customer Care Online 168 custom sized media loading 35 cut off edges 138 143 D dark copies or scans troubleshooting 144 data communication operations 55 57 DC bias 65 DC Controller PCA See ECU DC power distribution 62 DEFAULT PAPER 156 default settings restoring 156 delay jams 69 delivery delay jams 69 delivery roller observing 155 EN delivery sensor paper P5401 feeding operations 67 jam detection operations 69 delivery stationary jams 69 density operations 63 troubleshooting 139 developing roller 63 developing stage image formation process 65 dimensions product 16 28 DIMMs par
21. each side of the cover Removing the front cover 1 of 2 Covers 89 4 Pull the top of the front cover away from the printer to release the three tabs callout 1 5 Lift the front of the printer to release the tabs on the bottom of the front cover 6 Remove the front cover Figure 34 Removing the front cover 2 of 2 90 Chapter 5 Removal and replacement EN Toner cartridge door 1 Remove the left side back right side and top covers see pages 80 through 87 2 Remove the control panel assembly see page 88 3 Remove the front cover see page 89 4 Open the toner cartridge door 5 Remove one screw callout 1 from the bracket on the right side of the printer and remove the bracket 6 Atthe right side press the two small tabs callout 2 on the inside of the connecting link to release it 7 Repeat on the left side Note After the toner cartridge door is removed it is easy to remove the two connecting links Figure 35 Removing the toner cartridge door 1 of 2 EN Covers 91 8 Unhook the toner cartridge door hinge on the right side and slide the toner cartridge door toward the left to remove it a ee ace Han DE jare mpari emam miee Figure 36 Removing the toner cartridge door 2 of 2 To reinstall Lift the toner cartridge door hinge above the stop callout 1 Otherwise the toner cartridge door will not close 92 Chapter 5 Removal and replacement EN Figure 37
22. image data is converted and sent from the driver circuits to the formatter Document pickup and feed systems The document pickup and feed systems contain a pickup roller feed roller and delivery roller all of which are driven by the copier scanner motor M1 The document top sensor U20 detects the top and bottom edges of the document EN Optional copier scanner 71 Copier scanner path The following figure shows the copier scanner path KA a a a a a a E E aR ee E I l l Formatter f I a eee ee ee eee ee ee ee eee ee eee eee I Copier scanner driver PCB i I I See ee ee ee Pr E Cc E5 x 5 Ho gt ZZ LL W W O KS O gt mga 2H zo KC DO Za za Ow S Sh oO a o Q Pickup w im lt N Document tray O I E Na E O Face down tray moa OD ki Face down delivery roller Hp Face up cover Feed roller Figure 21 Copier scanner path 72 Chapter 4 Operational overview EN Basic sequence of operation formatter to printer The operation sequence of the printer is controlled by the microprocessor CPU on the ECU The following events take place during normal printer operation Table 12 Basic sequence of operation Period WAIT After the printer is turned on until the end of the initial rotation of the main motor Purpose To clear the drum surface of potential and to clean the primary charging roller
23. media 35 36 installation software 131 interface accessories ordering 169 interface errors 136 internal components diagrams part numbers 176 EN INTR Initial Rotation Period 73 isolated job settings 57 isopropyl alcohol cleaning with high voltage connection points 153 154 pickup roller 49 printer separation pad 50 scanner path 52 J jams copier scanner 148 detection operations 69 paper input trays 147 preventing 34 JetDirect print servers ordering 169 K keys See buttons kick plate motion observing 155 L label model and serial number 19 labels printing 35 languages printer 57 laser scanner assembly beam errors 135 cautions for 77 diagrams and part numbers 177 189 192 operations 61 removing 99 LaserJet Director 32 131 latent electrostatic image 65 leading edge detection operations 67 69 skew specifications 18 LEDs copier scanner 71 LEDs printer control panel error messages 132 locating 29 left plate assembly removing 119 left side cover locating 21 removing 80 length product 16 28 lenses operations 65 letterhead loading 35 life expectancies consumables 40 extending toner cartridge 56 high capacity toner cartridges 14 recycling used toner cartridges 25 lift plate diagrams and part numbers 185 189 192 operations 67 removing 118 EN light copies or scans troubleshooting 144 lights printer control panel error messages 132 locating 29 lines troubleshooting copies or scans 1
24. messages 132 ESC commands 158 ESD electrostatic discharge precautions for 77 exit rollers fuser assembly 67 exit sensor paper See delivery sensor paper PS401 Extended Capabilities Port ECP interface 55 extended warranty 24 E face down delivery assembly removing 105 face up roller removing 106 factory defaults restoring 156 fan assembly errors 136 removing 110 fasteners types of 171 fatal errors troubleshooting 134 136 features firmware 15 hardware 14 HP LaserJet Director 32 feed assembly drive rollers 67 Index 197 feed assembly removing 124 feed system paper 67 feeding problems troubleshooting copier scanner 148 frequent 40 printer 146 field replaceable units FRUs part numbers 171 procedures for replacing 77 film transparency carrier sheets creating 34 cleaning print path with 47 loading 35 firmware features 15 first page out 14 flashing lights 132 flowchart troubleshooting 130 focusing lenses operations 65 fonts included 15 formatter bypassing 149 copier scanner operations 71 errors 136 features 14 number resetting 156 operations 55 removing 79 97 troubleshooting 131 front cover assembly removing 89 front guide assembly removing 93 FRUs field replaceable units part numbers 171 procedures for replacing 77 fuser assembly diagrams and part numbers 186 errors 135 exit rollers 67 heating element check 152 life expectancy 40 operations 66 removing 101 temperature adjusting 14
25. not on the original Note Be careful not to touch the glass surface of the image sensor If you inadvertently touch the glass clean it according to the instructions below 1 Unplug the printer to turn the power off and wait for the copier scanner to cool 2 Open the scanner door EN Cleaning the equipment 51 52 Chapter 3 Maintenance 3 Dampen a clean cotton cloth with isopropyl alcohol pH7 or neutral pH With the damp cloth gently rub back and forth on the white sheet Also use the damp cloth to gently rub the rollers WARNING Alcohol is flammable Keep the alcohol and cloth away from an open flame Allow the alcohol to dry completely before you plug in the power cord 4 Spray glass cleaner on another piece of clean cotton cloth and carefully clean the glass on the image sensor WARNING Make sure that the scanner is completely dry before you plug in the printer power cord 5 Plug the printer in to turn it back on EN EN Operational overview Chapter contents Basic lUNCHONG 442562426405 454 54 NBA MANG HA DAGSA BAG 54 Formatter system a 55 Control panel a 56 PIGIL PAA nErenn EE aans 56 NAA PAA E 56 Enhanced I O 2 0 56 PJL overview 2 aa 57 Printer functions Aa 58 Engine control unit power system 59 Image formation system 64 Printer paper feed system 67 Jam dete
26. on the right reinsert the separation pad and snap both sides into place 8 Reinstall the input trays and then plug the printer in to turn it back on EN Replacing the copier scanner separation pad If the optional copier scanner feeds more than one page at a time you might have to replace the copier scanner separation pad Recurring feed problems indicate that the pad is worn 1 Unplug the printer to turn the power off and wait for the copier scanner to cool 2 Press the copier scanner door release button and open the copier scanner door 3 Locate the copier scanner separation pad and lift it straight up Press the new pad into place Close the copier scanner door EN User replaceable parts 45 Cleaning the equipment WARNING WARNING CAUTION 46 Chapter 3 Maintenance Before you perform these steps unplug the printer to avoid shock hazard To maintain quality thoroughly clean the printer e Any time a new toner cartridge is installed e After printing approximately 2 500 pages e Whenever print quality problems appear Clean the outside of the printer with a water dampened cloth Clean the inside with only a dry lint free cloth such as a lens tissue To avoid permanent damage ito the toner cartridge do not use ammonia based cleaners on or around the printer Avoid touching the heating element in the fuser It might be very hot and can cause burns Do not touch the surface of t
27. originals that are larger or smaller than supported size limitations See the user guide for more information Note To obtain good results it is important that you use the correct resolution and color settings for your job See the user guide for more information 34 Chapter 2 Installation and operation EN Loading media CAUTION Note EN Loading media to print Main input tray The main input tray holds up to 250 sheets of 75 g m 20 Ib paper or a 25 mm 0 98 inches stack of heavier media Load media with the top forward and the side to be printed facing up To prevent jams and skew always adjust the side media guides Priority input tray The priority input tray holds up to ten pages of 75 g m 20 Ib paper or one envelope transparency or card Load media with the top forward and the side to be printed facing up To prevent Jams and skew always adjust the side media guides If you try to print on media that is wrinkled folded or damaged in any way a jam might occur See the user guide for more information When you add new media make sure that you remove all of the media from the input tray and straighten the stack of new media This helps prevent multiple sheets of media from feeding through the printer at one time reducing paper jams Specific types of media e Transparencies and labels Load transparencies and labels with the top forward and the side to be printed facing up See the user guide for more
28. pages 89 through 95 3 Remove the right plate assembly see page 112 the pickup assembly see page 114 and the pickup roller shaft see page 117 4 Grasp the large plastic tabs callout 1 on each side of the paper lift plate and rotate it forward Note Do not pull on the paper guides Make sure you do not misplace the two large springs callout 2 that are under the lift plate or the small spring that is under the separation pad arm 5 Lift the paper lift plate straight up and out of the bushings callout 3 ea Figure 62 Removing the paper lift plate assembly To reinstall Make sure that the vertical paper sensor the narrow black plastic piece to the left of the separation pad arm is in an upright position and that the lift plate springs are positioned properly 118 Chapter 5 Removal and replacement EN Figure 63 EN Left plate assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Remove the front cover toner cartridge door and front guide assembly see pages 89 through 95 Remove the formatter see page 97 Remove six screws callout 1 If you have not already removed the fuser remove the fuser screw callout 2 5 Lift the left plate assembly off of the printer Removing the left plate assembly Internal assemblies 119 Bottom assemblies ECU pan Remove the left side back and right side covers see pages 80 through 86 1 Unplug the t
29. path 1 Clear the copier scanner path of obstructions 2 Check the photosensor to make sure that it operates correctly 3 If the problem persists replace the copier scanner assembly If the optional copier scanner is installed does it scan to the computer Other devices are connected to the parallel port Disconnect the other devices and try to scan again The computer parallel port hardware is not bidirectional Check hardware documentation to see if the port configuration can be changed The BIOS settings for the parallel port are set incorrectly Reset the computer port settings If the problem persists reset the BIOS settings in CMOS Polling is turned off in HP LaserJet Director or HP LaserJet Director is not running Start HP LaserJet Director and turn on polling EN Basic troubleshooting 131 Errors Control panel light messages Each control panel light message is listed along with possible causes and steps to resolve identified errors Figure 72 Control panel location Table 14 Control panel lights legend Light symbol Meaning of symbol 0 Light off O Light on Light blinking 132 Chapter 6 Troubleshooting EN Table 15 Control panel light messages Message EN Possible causes The printer is ready to print The printer is receiving or processing data The printer is in manual feed mode The printer is
30. replaced A toner cartridge weighs approximately 863 grams 30 5 oz when it is full approximately 766 grams 27 0 oz when it first fades and approximately 742 grams 26 2 oz when it is empty To redistribute toner in the cartridge Before installing a new cartridge or when toner begins to run low redistribute the toner by rotating the cartridge back and forth five or six times Errors 137 Table 17 Solving print image quality problems Solving image quality problems Use the following tables to help solve problems with printed pages If the problem occurs when printing see table 17 Solving print image quality problems on page 138 If the problem occurs when copying or scanning and if the printer has the optional copier scanner assembly attached see table 18 Solving copying and scanning image quality problems on page 143 Also see table 19 Solving print paper feed problems on page 146 and Solving copying and scanning paper feed problems on page 148 Solving print image quality problems Problem Pages do not print Parts of the page around the edges are not printing VABbCc AaBbCc AaBoCc Cause The printer is not plugged in The computer cable is loose The tape was not removed from the toner cartridge The toner cartridge is out of toner The media you are using does not meet HP s specifications for example it is too moist or too rough The
31. scanner assembly to modulate the laser diode on and off and to drive the laser scanner motor Cylindrical lens Scanning mirror BD Tb gi Laser driver PCB Mirror Scanner motor Focusing lens Photosensitive dram Figure 16 Overview of laser scanner operation EN Printer functions 61 Power system on ECU The AC DC and high voltage power supply circuits are all contained within the ECU AC power distribution The AC power circuitry supplies AC voltage whenever the power cord is connected to the AC power source AC voltage is distributed to the DC power supply circuitry and to the AC driver circuitry which controls AC voltage to the fuser assembly heating element DC power distribution The DC power distribution circuitry located on the ECU distributes 3 3 Vdc 5 Vdc and 24 Vdc as follows e 3 3 Vdc Formatter Laser beam detect circuitry ECU Photosensors e 5 Vdc Formatter ECU Laser beam detect circuitry 24 Vdc Motor Exhaust fan Laser scanner motor Document scanner motor Solenoid Formatter routing only High voltage power supply Fuser safety circuit Overcurrent overvoltage There are two overvoltage devices in this printer e Fuse F101 provides overcurrent protection for the fusing system circuitry Checking or replacing the fuse requires the removal of the ECU Fuse F102 provides overcurrent protection to the printer DC power supply circuitry e In addi
32. toner image on the drum transfer stage transfers the image to paper cleaning stage removes excess toner from the drum fusing stage applies heat and pressure to make the image on paper permanent To perform a half self test check The purpose of the half self test check is to determine which process is malfunctioning 1 Print a self test page See To print a self test page on page 159 Open the printer door after the paper advances half way through the printer about five seconds after the motor begins rotation The leading edge of the paper should have advanced past the toner cartridge Remove the toner cartridge Open the toner cartridge drum shield to view the drum surface If a dark and distinct toner image is present on the drum surface assume that the first two functions of the electrophotographic process are functioning image formation and development Troubleshoot the failure as a transfer or fusing problem To perform other checks If there is no image on the photosensitive drum perform these checks 1 Make sure you removed the entire length of the sealing tape from the toner cartridge before you installed the cartridge Perform a drum rotation functional check See Drum rotation functional check on page 151 Perform a high voltage power supply check See High voltage power supply check on page 153 150 Chapter 6 Troubleshooting EN Drum rotation functional check The
33. tools 159 HP LaserJet 1220 O invent Self Test Configuration Product Information Product Name HP LaserJet 1220 Formatter Number Product Serial Number CHBB401104 Service ID 10303 Firmware Datecode 20001023 PS Wait Timeout 300 seconds Installed Personalities and Options PCL 19990105 PCLXL 19990105 PS 19990105 DIMM Slot 1 Side 1 4 Mbyte ROM DIMM Side 2 8 Mbyte ROM DIMM Page Counts Total Pages Printed 56 Pages Jammed In Printer Pages Mispicked In Printer otal Pages Scanne Pages Jammed In Scanner Pages Scanned To Copy Pages Printed From Copy Pages Scanned To Host 6 1 1 O 01 N O O Memory Total Memory 8 Mbytes Available Memory 5 20 Mbytes These fields are only visible with the optional copier scanner installed or with the HP LaserJet 1220 New Copy Settings Default Copy Quality Default Copy Contrast Default Copy Collation On Default Copy Number of Copies Default Copy Reduce Enlarge Print Settings COPIES PAPER SIZE LETTER WIDE A4 NO COURIER REGULAR AUTO CONT OFF ORIENTATION P Portrait FORM 60 LINES MANUAL FEED OFF RET ON ECONOMODE OFF OPTIMIZE FOR MIDWEIGHT PRINT DENSITY 3 Figure 80 Self test page 160 Chapter 6 Troubleshooting FONT SOURCE Internal FONT NUMBER Q PITCH 10 00 SYM SET PC 8 LINE TERM 0 PRT PS ERRS OFF RESOLU
34. 0 troubleshooting 139 fuser release levers locating 21 fuser roller observing 155 fuses overcurrent protection F101 F102 62 fusing stage image formation process 66 G gear 69T 101 general fatal errors troubleshooting 136 glass cleaning 51 glossy paper 33 GO button 29 gray background troubleshooting 140 green light Ready or GO 29 198 Index guide assembly removing 93 guides cleaning 140 locating 20 22 troubleshooting 148 H half self test functional check 150 hardware features 14 hardware maintenance agreements 24 heating element check 152 operations 66 heavy media specifications 33 height product 16 28 high capacity toner cartridges 14 high voltage power supply connector assembly checking 154 operations 63 testing 153 HP Customer Care Online 168 HP JetDirect print servers ordering 169 HP LaserJet Director 32 131 HP SupportPack 24 HP Technical Training 168 humidity specifications 16 troubleshooting 140 142 I O Enhanced 56 idle mode power consumption 17 image density troubleshooting 139 voltage operations 63 image formation process operations 64 65 testing 150 image quality troubleshooting copies and scans 143 printed pages 138 repetitive image defect ruler 161 image sensor cleaning 51 operations 71 troubleshooting 144 indicator lights printer control panel error messages 132 locating 29 initializer NVRAM 156 input trays See main input tray priority input tray inserting
35. 1 If the defects occur on the back of the page the problem will probably correct itself after a few more printed pages Otherwise clean the printer See Cleaning the print path on page 47 1 Select Optimize for in the Paper tab of the printer driver Select the correct media This affects the current print job only 2 Select the correct media through the device configuration utility Try a different media Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family 1 Select Optimize for in the Paper tab of the printer driver Select the correct media This affects the current print job only 2 Select the correct media through the device configuration utility Reload the media and make sure that the media guides are not too tight or too loose against the media stack Remove some of the sheets The main input tray can hold up to 250 sheets of 20 lb 75 g m bond weight paper less for heavier paper or from 20 to 30 envelopes The priority input tray can hold up to ten sheets of 20 Ib 75 g m bond weight paper one sheet of heavier paper or one envelope Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Errors 141 Table 17 Solving print image quality problems continued Problem The printed page has curls or waves Large amounts of toner are scat
36. 1 Paper delivery sensor P5401 senses when paper has successfully moved out of the fusing area 2 Power switch Note Products sold in North America do not have power switches 3 Paper top sensor P5402 detects the leading and trailing edges of the paper It synchronizes the photosenstive drum and the top of the paper 4 Engine test switch SW201 see Engine test on page 149 for an explanation of the switch 5 Door open switch SW301 detects whether or not the printer door is closed and the toner cartridge is present Printing cannot continue until the printer door is closed and the toner cartridge is in its correct position Solenoid SL001 enables the pickup roller Paper out sensor P5201 senses when paper is in the main input tray or the priority input tray 70 Chapter 4 Operational overview EN Optional copier scanner The optional copier scanner consists of the optical system and the document pickup and feed systems Optical system The optical system also known as the contact image sensor contains the following e light emitting diode LED array e contact glass e rod lens array e sensor array The light source has three LEDs and is controlled by the formatter Light reflected from documents passes through the rod lens array and focuses on the sensor array The sensor array consists of 5 160 phototransistors 15 driver circuits amplify the light reception output in units of 344 phototransistors The
37. 43 144 printed pages 139 lists part numbers alphabetical 188 numerical 191 loading media 35 36 loads ECU 60 long media extensions 20 22 long pages copying or scanning 148 loose toner troubleshooting 140 lower metal shield pickup assembly 116 LSTR Last Rotation Period 73 machine screws 171 main input tray capacity 33 feeding operations 67 feeding problems troubleshooting 147 loading 35 locating 20 main wiring diagrams 162 maintenance agreements 24 manual feed mode 133 manual feed tray See priority input tray manuals ordering 168 margins minimum 138 143 media loading 35 selecting 33 34 media guides cleaning 140 locating 20 22 troubleshooting 148 memory base 14 buffer 56 errors 133 formatter 55 NVRAM 156 Memory Enhancement technology MEt 15 56 messages error 132 metal shields pickup assembly 116 mirror operations 65 misalignment specifications 18 troubleshooting 141 146 miscellaneous interface errors troubleshooting 136 misfeeds frequent See feeding problems troubleshooting jams Index 199 model number 19 motor copier scanner M1 71 errors 135 operations 61 removing 107 rotation observing 155 troubleshooting 130 MS DOS commands PJL 158 multifeeds See also feeding problems troubleshooting jams copier scanner 45 148 printer input trays 43 147 multipart forms 33 N noise specifications 18 Non Volatile RAM See NVRAM numbers part alphabetical list 188 numerical list 191 num
38. 65 part numbers 169 recycling 25 refilled 25 removing 78 central processing unit CPU formatter 55 characters misprinted 139 141 charging roller operations 65 power supply 63 Index 195 checklists preservice 78 toner cartridge inspection 137 troubleshooting 130 checks drum rotation 151 engine 149 half self test 150 heating element 152 high voltage power supply 153 paper path 155 self test page 159 circuit capacity specifications 17 circuitry ECU power system 62 classes HP Technical Training 168 cleaning high voltage connection points 153 154 media guides 140 pickup roller 49 printpath 47 printer separation pad 50 toner cartridge area 48 cleaning stage image formation process 66 clipped pages troubleshooting 138 143 cloth toner 170 Coldfire processor 55 color scanning specifications 17 colored paper troubleshooting 144 commands PJL 158 communication operations 55 57 complex pages printing 56 133 components diagrams and part numbers electrical 180 internal 176 conditioning stage image formation process 65 connection points high voltage power supply 154 toner cartridge 153 connectors locations 164 consumables life expectancies 40 ordering 168 consumption power 17 contact image sensor cleaning 51 operations 71 troubleshooting 144 continuous copy mode power consumption 17 continuous self test page printing 159 contrast troubleshooting 144 control panel copier scanner
39. 67 paper guides cleaning 140 locating 20 22 troubleshooting 148 paper input trays See main input tray priority input tray paper jams copier scanner 148 detection operations 69 preventing 34 printer input trays 147 paper lift plate diagrams and part numbers 185 189 192 operations 67 removing 118 paper out sensor PS201 67 69 paper output bin See output bin EN paper path cleaning 47 selecting 37 testing 155 paper pickup assembly diagrams and part numbers 172 182 removing 114 paper pickup roller See pickup roller paper top sensor P5402 67 69 parallel cable ordering 169 parallel port locating 21 part numbers alphabetical list 188 numerical list 191 partial characters troubleshooting 139 141 parts ordering 168 removing and replacing 77 user replaceable 40 path copier scanner 72 feeding operations 67 68 output selecting 37 print cleaning 47 scanner cleaning 51 testing 155 PCL Printer Command Language 57 periods See stages Phillips screwdrivers 77 phone numbers ordering supplies 168 photosensitive drum inspecting 137 operations 64 65 66 rotation functional checks 151 troubleshooting 139 photosensors locating 70 paper feed system 67 physical specifications 16 pickup assembly diagrams and part numbers 172 182 removing 114 pickup delay jams 69 pickup roller cleaning 49 life expectancy 40 observing 155 operations 67 replacing 41 shaft removing 117 pickup solenoid SL001 locating 70 o
40. 74 000CN Lever 5 90 RA0 1175 000CN Tension spring 6 90 RA0 1176 000CN Gear 69T 10 90 RA0 1177 000CN Cover front 1 88 RA0 1178 000CN Cover right side 2 88 RA0 1179 000CN Cover left side 3 88 RA0 1181 000CN Shutter guide 1 89 RA0 1182 000CN Shutter lever 2 89 RA0 1183 000CN Cover connector 4 88 RA0 1184 000CN Cover right support 7 89 RAO 1185 000CN Fuser plate left 7 90 RAO 1186 000CN Fuser plate right 8 90 RA0 1197 000CN Foot rubber plate assemblies 902 90 RA0 1200 000CN Torsion spring 28 92 RF0 1003 000CN Face up roller 2 94 EN Numerical parts list 191 Table 35 Numerical parts list continued Part Number Description Ref Figure RF0 1008 000CN Pickup roller 8 89 RF0 1014 000CN Separation pad 24 93 RG0 1001 000CN Right plate assembly 12 90 RG0 1002 000CN Left plate assembly 11 89 RG0 1003 000CN Paper pickup assembly 92 RG0 1005 000CN Feed roller holder assembly 25 92 RG0 1006 000CN Paper lift plate assembly 22 93 RG0 1007 000CN Paper pickup shaft assembly 23 92 RG0 1008 000CN Fuser assembly 110V 94 RG0 1010 000CN Face down delivery assembly 94 RG0 1012 000CN Engine controller PCB assembly 91 110 127V RG0 1013 000CN Printer pickup tray assembly 1 87 RG0 1014 000CN Paper pickup cover assembly 2 87 RG0 1015 000CN Toner cartridge door assembly 7 88 RG0 1016 000CN Back cover assembly 5 88 RG0 1017 000CN Top cov
41. CT SPECIAL INCIDENTAL CONSEQUENTIAL INCLUDING LOST PROFIT OR DATA OR OTHER DAMAGE WHETHER BASED IN CONTRACT TORT OR OTHERWISE Some countries states or provinces do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND THE WARRANTY TERMS CONTAINED IN THIS STATEMENT EXCEPT TO THE EXTENT LAWFULLY PERMITTED DO NOT EXCLUDE RESTRICT OR MODIFY AND ARE IN ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU Extended warranty HP SupportPack provides coverage for the HP hardware product and all HP supplied internal components The hardware maintenance warranty covers a three year period from the date of the HP product purchase The customer must purchase the HP SupportPack within 90 days of the HP product purchase The document number is 9036 Customers can contact the nearest HP authorized dealer about this service 24 Chapter 1 Product information EN Toner cartridge information EN The toner cartridge is designed to simplify replacement of the major consumable parts The toner cartridge contains the printing mechanism and a supply of toner At five percent page coverage a toner cartridge will print approximately 2 500 pages However a toner cartridge should print more pages if it regularly prints pages with less coverage such as short memos The car
42. D A5 FOOLSCAP DEFAULT LPARM PCL SYMSET ROMANS ISOLI ISOL2 ISOL5 PC8 PCS8DN PC850 PC852 PC8TK WINL1 WINL2 WINL5 DESKTOP PSTEXT WNINTL VNUS MSPUBL MATH8 PSMATH WNMATH PIFONT LEGAL ISO4 ISO6 ISO11 ISO15 ISO17 ISO21 ISO60 ISO69 WIN30 DEFAULT OEM ON OFF DEFAULT PRINTPAGECOUNT 0 2147483647 DEFAULT SCANPAGECOUNT 0 2147483647 DEFAULT COPYPAGECOUNT 0 2147483647 CLEARNVRAM None Command NVRAMINIT None Command Service mode functions 157 Note NVRAM PUL factory variables To use these commands you need some method to send PJL commands to the printer either with a software tool or by copying a binary file that contains the commands from the host using a DOS box For example from the DOS prompt copy 7b filename lpti Here is an example of a file that uses one of the commands ESC3 12345X PJL SET SERVICEMODE HPBOISEID PJL command PJL RESET Here is an example of using the NVRAMINIT command ESC 12345X PJL SET SERVICEMODE HPBOISEID PJL NVRAMINIT PJL RESET Set SERVICEMODE before trying to set the variable or you will not get the desired result Also reset the PJL and print a report to verify that the SERVICEMODE status is cleared To create these files you need an editor that can insert the ESC character or is able to copy it in from a existing file If a software tool is used simply send the same strings in the same order as given for the example files 158 Chapter 6 Trou
43. DC 300 ma China 0950 3347 INPUT 220 Vac 50 Hz OUTPUT 13 VDC 800 ma Continental Europe 0950 3170 INPUT 230 Vac 50 Hz OUTPUT 13 VDC 300 ma Continental Europe 0950 3349 INPUT 230 Vac 50 Hz OUTPUT 13 VDC 800 ma EN Ordering parts and supplies 169 Table 24 Accessories continued Power modules Japan 0950 3173 continued INPUT 100 Vac 50 Hz OUTPUT 13 VDC 300 ma Japan 0950 3352 INPUT 100 Vac 50 Hz OUTPUT 13 VDC 800 ma South Korea 9100 5168 INPUT 220 240 Vac 50 Hz OUTPUT 13 VDC 625 ma South Korea 0950 3351 INPUT 220 Vac 50 Hz OUTPUT 13 VDC 800 ma South Africa and India 9100 5171 INPUT 220 250 Vac 50 Hz OUTPUT 13 VDC 625 ma South Africa and India 0950 3354 INPUT 220 250 Vac 50 Hz OUTPUT 13 VDC 800 ma United Kingdom Singapore Ireland 0950 3171 and Hong Kong INPUT 220 240 Vac 50 Hz OUTPUT 13 VDC 300 ma United Kingdom Singapore Ireland 0950 3350 and Hong Kong INPUT 220 240 Vac 50 Hz OUTPUT 13 VDC 800 ma USA Canada Latin America and Taiwan 0950 3169 INPUT 110 127 Vac 60 Hz OUTPUT 13 VDC 300 ma USA Canada Latin America and Taiwan 0950 3348 INPUT 110 127 Vac 60 Hz OUTPUT 13 VDC 800 ma 170 Chapter 7 Parts and diagrams EN How to use the parts lists and diagrams Common The figures in this chapter illustrate the major subassemblies in the printer and their component parts A table material list follows each exploded assembly diagram
44. Figure 74 Figure 75 Figure 76 Figure 77 Figure 78 Figure 79 Figure 80 Figure 81 Figure 82 Figure 83 Figure 84 Figure 85 Figure 86 Figure 87 Figure 88 8 Figures Removing the formatter 2 0f2 98 Removing the laser scanner 1 of 2 99 Removing the laser scanner 2 of 2 100 Removing the fuser assembly 1 0f4 101 Removing the fuser assembly 2 0f4 102 Removing the fuser assembly 3 0f4 103 Removing the fuser assembly 4 0f4 104 Removing the output rollers 1 0f2 105 Removing the output rollers 2 0f2 106 Removing the motor a 107 Removing the solenoid 1 of 2 0 0c cee eee 108 Removing the solenoid 2 of 2 109 Removing the fan 1 of 2 2 ees 110 Removing the fan 2 of 2 ica Paw eee Bao eA Cae AA 111 Removing the right plate assembly 1 0f2 112 Removing the right plate assembly 2 of 2 113 Removing the pickup assembly 1 0f3 114 Removing the pickup assembly 2 0f3 115 Removing the pickup assembly 3 0f3 116 Removing the pickup roller shaft a 117 Removing the paper lift plate assembly
45. LOCK w D 43 3V 2 GND 45V n J204M J204F IBD Engine controller PCB SC 24V gt SL001 Paper pick up SCLK CPUD X solenoid 2 RESET M GND 24V Paper top sensor PCB 24V J211M J211F gt GND 3 3V 4 a PS402 co 5V N Paper to a Test print AE NT GND SN pa Door switch switch aper detection PISNS AA D 1 2 3 eo GND sensor o 43 3V aint ae PS201 o Ha 1 2 3 J401 N 3 3V MS MB n Main motor IMA o MA jo 220 240V only gt Power switch SW101 INLET Figure 83 Main wiring 2 of 2 EN Troubleshooting tools 163 Locations of connectors Figure 84 Locations of printer connectors Figure 85 Locations of copier scanner connectors 164 Chapter 6 Troubleshooting EN Locations of LEDs jumpers and switches INL101 Figure 86 Locations of LEDs jumpers and switches Table 22 Switch functions SW number Function Remarks SW101 Power switch 220 240V only SW201 Switch for test print SW301 Switch for detection of Open door EN Troubleshooting tools 165 166 Chapter 6 Troubleshooting EN EN Parts and diagrams Chapter contents Ordering parts and supplies 168 POMS xia gg 2 ota e oe oe aie AL DAGANG GOAT AMINO W ANAN 168 Related documentation and software 168 Consumabl
46. Make sure that it is set for the appropriate media Clean the printer See Cleaning the print path on page 47 Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Replace the toner cartridge 1 Select Optimize for in the Paper tab of the printer driver Select the correct media 2 Select the correct media through the device configuration utility Plug the printer directly into an AC outlet EN Table 17 Solving print image quality problems continued Problem Repetitive vertical defects appear on the printed page AaBbC AaBbCce AaBoC AaBbC ce AaBbC Characters are misformed and are producing hollow images Pages are skewed AQBboCc AaBbCe AaBbCe AaBbCe AaBbCe EN Cause If the repetitive mark occurs at equal distance between marks either the toner cartridge or a printer roller is damaged The internal parts have toner on them The printer driver is not set for the correct media The media is too slick The printer driver is not set for the correct media The media is loaded incorrectly The input tray is too full The type and quality of media you are using does not meet HP s specifications Solution Use the defect ruler to identify the spacing Check the appropriate component and replace if necessary See Repetitive image defect ruler on page 16
47. O1 C7044 00001 Formatter shield O 0515 2672 Formatter screws r ai a AN e ANG ANG RG ANG ea RG a ANG a Internal assemblies 177 Internal components 2 of 2 EN Internal components 2 of 2 178 Chapter 7 Parts and diagrams Figure 90 EN Part numbers Table 29 Internal components 2 of 2 Ref Part number Description Qty 1 RG0 1022 000CN Front guide assembly 1 3 RG0 1030 000CN Fan assembly 1 4 RA0 1173 000CN Lever holder 1 5 RA0 1174 000CN Lever 1 6 RA0 1175 000CN Tension spring 1 7 RAO 1185 000CN Fuser plate left 1 8 RA0 1186 000CN Fuser plate right 1 9 RH7 5284 000CN Solenoid DC24V 1 10 RA0 1176 000CN Gear 69T 1 11 RA0 1023 000CN Connecting Link 2 12 RG0 1001 000CN Right plate assembly 1 13 RH7 1473 000CN Motor 1 902 RAO 1197 O00CN Foot rubber plate assemblies 2 Internal assemblies 179 Electrical components J907 E7 Figure 91 Electrical components 180 Chapter 7 Parts and diagrams EN EN Part numbers Table 30 Electrical components Ref Part number Description Qty 1 RA0 1127 000CN Engine controller case 1 2 RA0 1128 000CN PCB spacer 6 3 WT2 5694 000CN Clamp cable 1 5 RG0 1012 000CN Engine controller PCB assembly 1 110 127V RG0 1029 000CN Engine controller PCB assembly 220 240V Internal assemblies 181 Paper pic
48. TION 1200 BITS PER PIXEL PERSONALITY AUTO IO TIMEOUT 15 REPRINT AUTO EN Repetitive image defect ruler First occurrence of print defect Toner developing cylinder 37 7 mm Toner primary charging roller 37 7 mm Transfer roller 45 2 mm Heating element 56 5 mm Pressure roller 62 8 mm Toner drum 75 4 mm Figure 81 Repetitive image defect ruler EN Troubleshooting tools 161 Main wiring Copier scanner motor l Contact image sensor J203 J103 aS Na D i J3 i ocument top Copier scanner driver PCB s2 sensor j f P U20 es p bi i TT 2 3 i P1 t MI ee e e 4 VE ee a a a ee a E eels A E E a a E E EE CU e ee 1 eee eee Ng 123 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 a COPIER SCANNER CONNECTOR N ae C N X ad N IS Ni rran HID Q 5 2 orn eae e 2 ot e i 3 wl Z E zZ x O a S ae wn a wot x 2 Vi
49. The priority input tray is not in place The print density setting is set too high The media basis weight is too high The humidity level is too low The toner cartridge needs to be replaced If the toner smears appear on the leading edge of the media the media guides are dirty The media you are using does not meet HP s specifications for example it is too moist or too rough The toner cartridge needs to be replaced The fuser temperature is too low The inside of the printer is dirty The media you are using does not meet HP s specifications for example it is too moist or too rough The toner cartridge needs to be replaced The printer driver is not set for the correct media The power strip is not working correctly 140 Chapter 6 Troubleshooting Solution Adjust the priority input tray Decrease the amount of background shading through the device configuration utility Change the media to a lower basis weight Very low humidity can increase the amount of background shading Move the printer to a different location or decrease the background shading through the device configuration utility Replace the toner cartridge Wipe the media guides with a dry lint free cloth Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Replace the toner cartridge Select Optimize for in the Paper tab of the printer driver
50. aning 52 white stripes troubleshooting 143 width product 16 28 wiring diagrams 162 wrapping jams 69 wrinkled pages troubleshooting 146 writing stage image formation process 65 Y yellow light See Attention light Z zero insertion force ZIF connectors 97 98 EN Q invent Printed on at least 50 Total Recycled Fiber with at least 10 Post Consumer Paper copyright 2001 Hewlett Packard Company Printed in USA htto www hp com support lj1200 C7044 90906
51. aserJet products the ECU is also known as the controller PCA or the DC controller PCA The ECU controls the following systems and functions e Printer engine control e paper motion monitoring and control printing e motor e Printer laser scanner e Power system e AC power distribution e DC power distribution e overcurrent overvoltage protection e high voltage power distribution Printer functions 59 The following figure shows the various ECU loads Cartridge Kk High voltage power supply Kk circuit Transfer charging roller Pressure roller 4 Fuser unit Fuser control GA IC201 circuit T CPU AC input Low voltage power supply circuit i Fan motor drive Fan l circuit _ Wan motor Ha Option KE Video controller PCB Figure 15 ECU loads 60 Chapter 4 Operational overview EN Printer engine control system Paper motion monitoring and control The ECU controls paper motion in the printer by continuously monitoring the various paper sensors and coordinating the timing with the other print processes For a detailed explanation of paper movement and the interaction of the photosensors and solenoid with the paper movement process see Printer paper feed system on page 67 Motor The motor is controlled by the ECU The motor provides all of the printer paper movement Printer laser scanner drive The ECU sends signals to the laser
52. bers telephone 168 NVRAM initializer 156 operations 55 O online Customer Care HP 168 operating environment specifications 16 28 optical system copier scanner cleaning 51 operations 71 troubleshooting 144 optional copier scanner cleaning 51 connection locating 21 diagrams and part numbers 172 dimensions 16 errors 135 136 features 14 feeding problems troubleshooting 148 image quality troubleshooting 143 life expectancy 40 loading media 34 36 operations 55 71 path 72 removing 81 separation pad 40 45 specifications 17 testing 131 orange light See Attention light order of operations 73 printed pages 37 removing parts 79 troubleshooting steps 130 200 Index ordering parts and supplies 168 originals loading 34 36 output bin capacity 14 locating 22 long media extension locating 20 printing to 37 output path cleaning 47 operations 67 selecting 37 output rollers removing 105 106 overcurrent overvoltage protection 62 overhead transparencies carrier sheets creating 34 cleaning print path with 47 loading 35 P page count resetting 156 Page Protect 56 pages per minute 17 pages per month 14 pan ECU 120 paper breaking reams 147 default size resetting 156 loading 35 selecting 33 34 storing 146 paper delivery sensor PS401 feeding operations 67 jam detection operations 69 paper feed assembly removing 124 paper feed problems troubleshooting copier scanner 148 printer 146 paper feed system
53. bleshooting EN Troubleshooting tools Note EN Internal reports Use the control panel to print self test pages which show the print settings To print a self test page 1 When the printer is in the ready state press the Go button 2 A self test page will print Information found on the self test page The self test page has the following fields Product Information Memory Installed Personalities and Options Print Settings and Page Counts including pages jammed in printer pages mispicked in printer and total pages printed If the optional copier scanner is installed the self test page has a Copy Settings field and it has additional page count information pages jammed in scanner pages scanned to copy pages printed from copy and pages scanned to host To view a sample self test page see figure 80 on page 160 To print a continuous self test page 1 Turn the printer off Press and hold the Go button Turn the printer on and continue to hold the Go button for approximately 5 seconds Do not hold the Go button for more than 15 seconds or you might initialize NVRAM During this process the Attention LED will turn on If the Ready LED also turns on before you release the Go button you must start again with step 1 4 Release the Go button and the printer LEDs will begin cycling and will run until the printer is in the ready state To stop a continuous self test page Press the Go button Troubleshooting
54. bserving 155 operations 67 69 removing 108 pickup stationary jam 69 EN pins heating element 152 high voltage power supply 154 PJL Printer Job Language commands using 158 features 57 NVRAM variables 156 157 plate assemblies removing 118 119 pliers required 77 polling settings 131 ports ECP Extended Capabilities 55 locating 21 troubleshooting 131 power specifications 17 troubleshooting 130 power cable ordering 169 power receptacle locating 21 power supplies disconnecting 77 ECU 62 testing high voltage 153 power switch 21 PoziDriv screwdrivers 77 ppm pages per minute 17 preprinted paper loading 35 preservice checklist 78 pressure roller operations 66 primary charging roller operations 65 power supply 63 print cartridges See toner cartridges print density troubleshooting 139 voltage operations 63 print path cleaning 47 feeding operations 67 68 selecting 37 testing 155 PRINT period 73 print quality troubleshooting 138 print servers ordering 169 Printer Command Language PCL 57 printer drivers ordering 168 Printer Job Language PJL commands using 158 features 57 NVRAM variables 156 157 Index 201 printer pickup roller cleaning 49 life expectancy 40 observing 155 operations 67 replacing 41 shaft removing 117 printer separation pad cleaning 50 life expectancy 40 operations 67 replacing 43 printing feed problems 146 loading media 35 selecting media 33 troubleshooting 131 143 pri
55. c AaBbCc AaBbCc AaBbCc EN Cause The printer is not plugged in The computer cable is loose The tape was not removed from the toner cartridge The toner cartridge is out of toner The media you are using does not meet HP s specifications for example it is too moist or too rough The original was loaded upside down The printer cannot print to the edge of the paper The printer has minimum margins on each edge of 4 23 mm 0 167 inches If copying the reduction setting is set incorrectly The media you are using does not meet HP s specifications for example it is too moist or too rough The toner is low The platen has dirty spots Solution Make sure that the printer is plugged into a live wall outlet or power strip Check that the cable between the printer and the computer is securely connected Remove the toner cartridge remove the tape and return the toner cartridge See Toner cartridge on page 78 Replace the toner cartridge See Toner cartridge on page 78 Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Load the original with the side to be scanned facing up To get the image to fit into this printable area slightly reduce the size of the image Copied images will be clipped if the image on the original is too close to the edge of the original Make sure that the media meets speci
56. chedules HP Technical Training 168 screwdrivers required 77 screws self tapping 77 types of 171 selecting media for copying or scanning 34 printing 33 self tapping screws installing 77 self test page printing 159 sensor array 71 sensor flag paper feed assembly 125 127 sensors locating 70 paper feed system 67 separation pads cleaning 50 diagrams and part numbers 185 189 192 life expectancies 40 operations 67 replacing 43 45 separation stage image formation process 66 EN sequence operations 73 printed pages 37 removing parts 79 troubleshooting steps 130 serial number 19 SERVICEMODE 158 settings factory defaults restoring 156 print job 57 reports printing 159 shaft pickup roller 117 shields pickup assembly 116 side covers removing left 80 right 84 side media guides locating 20 See also guides signals VIDEO 73 69T gear removing 101 size default paper resetting 156 margins minimum 138 143 media 33 34 printer 16 28 scanned images 145 skew copies or scans troubleshooting 148 printed pages troubleshooting 141 146 specifications 18 slots DIMM 14 smears toner 140 software features 32 installation troubleshooting 131 ordering 168 solenoid SL001 locating 70 observing 155 operations 67 69 removing 108 sound specifications 18 space requirements 28 spare parts See parts specifications 16 specks toner 139 142 speed data transfer 56 printing and copying 17 processor 55 spots printe
57. covered At the end of each sweep the beam sirikes the beam detect lens generating the beam detect signal BD signal The BD signal is sent to the ECU where it is converted to an electrical signal used to synchronize the output of the next scan line of data Developing stage During this process the latent electrostatic image is present on the drum The toner particles obtain a negative surface charge by rubbing against the developing cylinder which is connected to a negative DC supply The negatively charged toner is attracted to the discharged exposed grounded areas of the drum and it is repelled from the negatively charged unexposed areas Transfer stage During this process the toner image on the drum surface is transferred to the media The transfer roller applies a positive charge to the back of the media which attracts the negatively charged toner on the drum surface to the media After separation the drum is cleaned and conditioned for the next image Printer functions 65 5 Separation stage During this process the media separates from the drum To stabilize the feed system and prevent toner dropouts on the printed image at low temperature and humidity the static eliminator reduces the charge on the back of the media 6 Fusing stage During this process the heat and pressure fuse the toner into the media to produce a permanent image The media passes between a heated fusing element and a soft pressure roller wh
58. crew kit contains a full set of screws for the RY7 5082 000CN LaserJet 1200 product Separation pad RF0 1014 000CN 24 93 Shutter guide RA0 1181 000CN 1 89 Shutter lever RA0 1182 000CN 2 89 Solenoid DC24V RH7 5284 000CN 9 90 Tension spring RA0 1175 000CN 6 90 Toner cartridge door assembly RG0 1015 000CN 7 88 EN Alphabetical parts list 189 Table 34 Alphabetical parts list continued 190 Chapter 7 Parts and diagrams Description Part number Ref Figure Top cover assembly RG0 1017 000CN 6 88 Torsion spring RA0 1035 000CN 11 92 Torsion spring RA0 1200 000CN 28 92 Transfer roller RG9 1483 000CN 10 89 EN Numerical parts list Table 35 Numerical parts list Part Number Description Ref Figure 7121 8042 HP jewel 8 88 C515 2672 Formatter screws 16 89 C7044 00001 Formatter shield 15 89 C7857 60001 Formatter 14 89 R37 5020 000CN Optional copier scanner 3 87 RA0 1003 000CN Foot rubber paper pickup assembly 2 93 RA0 1023 000CN Connecting Link 11 90 RA0 1035 000CN Torsion spring 11 92 RA0 1072 000CN Grounding plate 10 92 RA0 1088 000CN Gear 29T 5 94 RA0 1089 000CN Gear 17T fuser assembly 6 94 RA0 1104 000CN Bushing 18 94 RA0 1127 000CN Engine controller case 1 91 RA0 1128 000CN PCB spacer 2 91 RA0 1169 000CN Compression spring 3 89 RA0 1172 000CN Gear 17T 9 89 RA0 1173 000CN Lever holder 4 90 RA0 11
59. ctancies of consumables Inspect consumables when servicing the printer Replace consumables as needed based on failure or wear rather than on usage The following table lists approximate schedules for replacing consumables Table 11 Life expectancies of consumables Description Part number Estimated life Remarks pages Toner cartridge user C7115A 2 500 When print becomes faint replaceable C7115X 3 500 redistribute toner in the cartridge i by gently shaking the cartridge from side to side Printer transfer roller RG9 1483 000CN 25 000 Can affect print quality and or paper movement Printer pickup roller RF0 1008 000CN 25 000 Look for glazing and or cracks Printer separation pad RF0 1014 000CN 25 000 Can affect paper movement Printer subpads RA0 1065 000CN 25 000 Can affect paper movement Fuser assembly RG9 1493 000CN 25 000 Can affect print quality and paper 100 127 V movement Fuser assembly RG9 1494 000CN 25 000 Can affect print quality and paper 220 240 V movement Copier scanner separation RY7 5055 000CN 10 000 Can affect document movement pad kit Copier scanner R37 5020 000CN 10 000 Can affect document movement The estimated toner cartridge life is based on letter or A4 sized paper with an average of five percent toner coverage and a medium density setting Toner cartridge life can be extended further by conserving toner using draft mode settings User replaceable parts R
60. ction aaa 69 Optional copier scanner A eee 71 Optical system 0 0 ees 71 Document pickup and feed systems 71 Basic sequence of operation formatter to printer 73 Chapter contents 53 Basic functions This chapter presents a functional overview of the printer s processes The following systems are discussed e formatter e printer functions e engine control unit ECU system power system e image formation system e paper feed system printer and e optical system optional copier scanner The printer has an optional copier scanner Operation sequences of the printer are controlled by the ECU Operation sequences of the optional copier scanner are controlled by the formatter FORMATTER Ga COMPUTER ENGINE UNIT ee eel Figure 13 Basic configuration 54 Chapter 4 Operational overview EN Formatter system EN The formatter is responsible for the following e controlling the optional copier scanner e formatting and controlling copies e receiving and processing print data from the printer interface e monitoring the control panel and relaying printer status information e developing and coordinating data placement and timing with the print engine e communicating with the host computer through the bidirectional interface The formatter receives print data from the bidirectio
61. d pages 139 142 scanned images 144 stages image formation 65 150 operation sequence 73 EN star screws 171 static eliminator operations 66 static precautions for 77 stationary jams 69 status information relaying 55 57 STBY Standby period 73 storage environment specifications 16 storing paper 146 straight through output door locating 21 using 37 straight through output path using 37 streaks vertical black 144 stripes vertical white 143 subpads life expectancies 40 operations 67 supplies ordering 168 support technical 168 SupportPack HP 24 SW301 overriding 155 switches engine test 149 paper path test 155 power 21 T technical support 168 Technical Training 168 telephone numbers ordering supplies 168 temperature fuser settings 140 specifications 16 storing paper 146 troubleshooting 142 tests drum rotation 151 engine 149 half self functional check 150 heating element 152 high voltage power supply 153 paper path 155 self test page 159 troubleshooting 130 text troubleshooting misprinted 139 141 scanned 145 thermistor connector 152 timing diagram general 74 Index 203 toner cloth ordering 170 image formation operations 65 loose troubleshooting 140 redistributing 137 scattered troubleshooting 142 smears troubleshooting 140 specks troubleshooting 139 142 waste cleaning operations 66 toner cartridge area cleaning 48 toner cartridge door locating 20 removing 91 toner cartridges check
62. de change the setting from the printer properties See the printer software for more information The page being printed might be too complex for the printer memory capacity e To continue printing press and release the GO button e Reduce the resolution See the user guide for more information e Add more memory See the user guide for more information EN Table 9 Control panel light messages continued Light Condition of the printer Action status Door open media out no Make sure that the toner cartridge door toner cartridge or paper jam is completely closed O The printer is in an error state Make sure that the media is loaded O that requires operator correctly See the user guide for KA Intervention or help instructions Make sure that the toner cartridge is correctly installed in the printer See the user guide for instructions If the printer still has an error there is a paper jam See the user guide for instructions Printer initialization Cancel No action is necessary an Job Cleaning Mode Ok ka A printer initialization is taking A place If all lights blink for half CA A of a second or longer in a sequence the printer is initializing all previously sent print jobs are being purged a cleaning page is being printed Fatal error Turn the printer off and then back on All lights are on Unplug the printer for five minutes and O then plug it back in 0 If the printer still has an e
63. del number and serial number are listed on an identification label located on the inside of the toner cartridge door The serial number contains information about the country of origin revision level production code and production number of the printer The label also contains power rating and regulatory information HEWLETT PACKARD 11311 CHINDEN BLVD BOISE IDAHO 83714 stale USA iA ent Nags No C7D4MA slat 208 208 a ago N mero de Serie January 11 2001 NMAN Assembled in USA Printer Engine Made in China h HEWLETT PACKARD 11311 CHINDEN BLVD HNE IDAHO 63714 inwent 110 127V A Numero de Mod le Madel No C7044A 50 60H2 3 5A 3 5A LULU kna Num ro de S rie January 11 2001 Serial No CNFB123455 DU Assembled in USA Printer Engine Made in Chins Apparalen skall anslulas ill jordat nalulieg 9 Os NOM 1 a Assembl aux Flets Unis g n rique pour Imprimante labriqut en Chine HEWLETT PACKARD h 11311 CHINDEN BLVO BOISE IDAHO 83714 USA inyon Nimere de Model 220 240 AC Model No SO 60Hz 3 5A 3 5A MILO enusctree N mer de Serie January 11 2001 Serial No CONFB123456 INUNA O A Made in China Fabriqu en Chine Model and serial number labels Cf paralen skali analulas till jordal natuttag Model and serial numbers 19 Tasted To Comply With FOG Standards FOR HOME OR OFFICE USE This product conforms with COAH radia
64. deo controller PCB z Q ah o ar D W 3 co o oo ot co S LO N R mM O peN KM NI Q UW a w 5 5 5 X a l oO O N D g oe 5 l auy gt 23 ELEnaQoa noo Q Q QO W O st USB CONNECTOR aao NG 855555 a9 Cea ___ om Cf fal OTT Ta Tot al Tp s905M Caf af of a J910F 5 4 3 2 1 1 3 5 7 9 2 3 1 l l Laser driver BD l 7 mm a PCB sensor DE LED702 l l l An Laser 2 1 aser scanner Pr LEP703 Display PCB motor Figure 82 Main wiring 1 of 2 162 Chapter 6 Troubleshooting EN Thermal fuse Fuser heater FU1132 Delivery paper sensor PCB Delivery paper sensor PS401 Main thermistor Sub thermistor Pressure roller TH701 TH702 To developing To primary 2 1 2 1 cylinder charging roller A A Fuser film FSRSTH J302 J303 TRS DRGND J210M J210F 3 3V GND SN POSNS Pe J201 Ki 9 ACC amp DEC 3 GND Q 424V J203M J203F a CNT1 FANON tee a ONT GND NR no Ari intake fan ea BDI F
65. e eK eee WG 16 Model and serial numbers ccc eee eee 19 Overview of printer ee eee eee eens 20 Front and side view 2 6 ee eee eens 20 Back and side view eee eens 21 Overview of optional copier scanner 0 0 ce eee 22 TOO MGW AA nd E hod bee ae Pees 22 Warranty statement cc ee eee eee eee 23 Extended warranty 00 cee eee eee eens 24 Toner cartridge information 0 ccc tees 25 Refilled toner cartridges 0 eee ees 25 Recycling toner cartridges 0 cece ees 25 2 Installation and operation Chapter ConleniSs 202acse6seduqecbde ate wedded stbua ow eae dagare es 27 Operating environment aaaea 28 Identifying printer components a 29 Printer control panel 0 0 eee eee eee ees 29 Control panel light patterns n annaa ee 30 Copier scanner control panel 0 0 cece ee eee eee 32 Selecting Media 6 eee nets 33 Selecting media to print 6 0 0 eee 33 Selecting media to copy Or SCAN Lees 34 POACINGINCClIAs lt o6 44 4 04 24 50852 aed oe se bee des 6o4 Se oeed bese hans eae 35 Loading media to print eee ees 35 Loading media to copy or scan aa 36 Printer output paths a 37 EN Contents 3 3 Maintenance Chapter Kee CA 39 Life expectancies of consumables AA 40 User replaceable parts aa 40 Replacing the printer pickup roller
66. ear 29T RA0 1089 000CN Gear 17T fuser assembly ti o1 AJIN RA0 1104 000CN Bushing RG0 1082 000CN Delivery sensor PCB assembly Internal assemblies 187 Alphabetical parts list Table 34 Alphabetical parts list Description Part number Ref Figure Back cover assembly RG0 1016 000CN 5 88 Bushing RA0 1104 000CN 18 94 Cable laser scanner RG0 1074 000CN 5 89 Cable laser scanner flat flexible RH2 5440 000CN 13 89 Clamp cable WT2 5694 000CN 3 91 Clutch kit RY7 5081 000CN 19 92 Compression spring RAO 1169 000CN 3 89 Connecting Link RA0 1023 000CN 11 90 Control panel assembly RG0 1024 000CN 12 89 Copier scanner pickup tray assembly RG0 1069 000CN 4 87 Copier scanner separation pad RY7 5055 000CN 6 87 Cover connector RA0 1183 000CN 4 88 Cover front RA0 1177 000CN 1 88 Cover left side RA0 1179 000CN 3 88 Cover right side RA0 1178 000CN 2 88 Cover right support RA0 1184 000CN 7 89 Delivery sensor PCB assembly RG0 1082 000CN 26 94 Engine controller case RA0 1127 000CN 1 91 Engine controller PCB assembly RG0 1012 000CN 5 91 110 127V Engine controller PCB assembly RG0 1029 000CN 5 91 220 240V Face down delivery assembly RG0 1010 000CN 4 94 Face down tray assembly RG0 1070 000CN 5 87 Face up roller RF0 1003 000CN 2 94 Fan assembly RG0 1030 000CN 3 90 Feed roller holder assembly RG0 1005 000CN 25 92 Foo
67. ed replace the fuser 4 Remove the thermistor connector callout 2 and measure the resistance between J206 pins one and two and between J206 pins three and four Note Normal resistance between both pairs of pins is 370K ohms 50K ohms at 20 C 68 F 5 If no resistance is measured replace the fuser Figure 74 Locating connectors for the heating element check 152 Chapter 6 Troubleshooting EN High voltage power supply check The high voltage power supply PCA provides the necessary voltages for the electrophotographic processes To check the toner cartridge connection points Turn the toner cartridge over and visually inspect the three connection points on the ends of the toner cartridge drum ground callout 1 charging callout 2 and developing roller callout 3 If they are dirty or corroded clean the connection If they are damaged replace the toner cartridge Note Use only isopropyl alcohol to clean the connections Figure 75 Toner cartridge high voltage connection points right side Figure 76 Toner cartridge high voltage connection points left side EN Functional checks 153 To check the high voltage connector assembly The assembly uses three spring loaded pins to contact the toner cartridge drum ground callout 1 charging callout 2 and developing roller callout 3 Verify that the pins are not dirty or corroded and that the spring loading action is functional If the pins are dirt
68. ediately stops the printing process and displays a jam message on the control panel A jam can be detected under any of the following conditions EN Pickup delay jam Media does not reach the paper top sensor PS402 after the pickup solenoid SL001 has been turned on twice the original pickup plus a retry within 2 8 seconds Pickup stationary jam The paper top sensor PS402 does not detect the trailing edge of media within 4 6 seconds of detecting the leading edge Delivery delay jam The paper delivery sensor PS401 does not detect the leading edge of media within 2 1 seconds after the paper top sensor P5402 detects the leading edge Wrapping jam The paper delivery sensor P5401 does not detect the trailing edge of the media within 1 5 seconds after the paper top sensor P5402 detects the leading edge and within ten seconds after the paper delivery sensor PS401 detects the leading edge Delivery stationary jam The paper delivery sensor P5401 does not detect the leading edge of media within 2 2 seconds after the paper top sensor P5402 detects the trailing edge Residual paper jam The paper top sensor P5402 or the paper delivery sensor PS401 detect media in the initial rotation period Printer functions 69 Solenoid photosensors and switches The following figure shows the locations of the solenoid photosensors and switches 7 PO N Figure 20 Solenoid photosensors and switches
69. embly Right plate assembly Pickup assembly Pickup roller shaft Paper lift plate ECU assembly Paper feed assembly Formatter L left plate assembly Laser scanner Fuser assembly L Output rollers Motor Note The ECU and the formatter are listed twice The ECU must be removed to gain access to the paper feed assembly To remove the ECU only remove the right side cover The formatter must be removed to gain access to the left plate assembly To remove the formatter only remove the left side cover EN Removal and replacement strategy 79 Covers Left side cover 1 Open the toner cartridge door 2 Pull out on the notch callout 1 on the back of the cover 3 Rotate the cover away from the printer Figure 24 Removing the left side cover 80 Chapter 5 Removal and replacement EN Optional copier scanner CAUTION You must unplug the printer before removing or reinstalling the optional copier scanner or you might damage both the printer and the optional copier scanner 1 Remove the left side cover see page 80 2 Pull up on the ribbon cable to disconnect it from the connector callout 1 on the formatter Note The optional copier scanner has two tabs that hook into the underside of the printer output bin Another tab and a pin stabilize the optional copier scanner in the back Use care so that you do not bend or break the three tabs or the pin 3 Pull the optional copier scanner forward callout 2
70. emoving the pickup assembly 1 of 3 114 Chapter 5 Removal and replacement EN 5 Remove two screws figure 1 on the top of the assembly Figure 59 Removing the pickup assembly 2 of 3 EN Internal assemblies 115 6 Lift the upper metal shield callout 1 straight up and remove it from the printer 7 Lift the lower metal shield callout 2 straight up and remove it from the printer Figure 60 Removing the pickup assembly 3 of 3 116 Chapter 5 Removal and replacement EN Figure 61 EN Pickup roller shaft 1 Remove the left side back right side and top covers see pages 80 through 87 2 Remove the front cover toner cartridge door and front guide assembly see pages 89 through 95 Remove the right plate assembly see page 112 Remove the pickup assembly see page 114 5 Slide the shaft toward the right until the left end callout 1 releases 6 Carefully pull the left end of the shaft toward you until it clears the left side of the chassis 7 Pull the shaft to the left and out of the printer VA Removing the pickup roller shaft To reinstall Be sure to align the clutch on the pickup roller shaft with the follower large plastic tab callout 2 on the paper lift plate Internal assemblies 117 Paper lift plate assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Remove the front cover toner cartridge door and front guide assembly see
71. eplace any product to a condition as warranted you will be entitled to a refund of the purchase price upon prompt return of the product 4 HP products may contain remanufactured parts equivalent to new in performance or may have been subject to incidental use 5 Warranty does not apply to defects resulting from a improper or inadequate maintenance or calibration b software interfacing parts or supplies not supplied by HP c unauthorized modification or misuse d operation outside of the published environmental specifications for the product or d improper site preparation or maintenance 6 HP MAKES NO OTHER EXPRESS WARRANTY OR CONDITION WHETHER WRITTEN OR ORAL TO THE EXTENT ALLOWED BY LOCAL LAW ANY IMPLIED WARRANTY OR CONDITION OR MERCHANTABILITY SATISFACTORY QUALITY OR FITNESS FOR A PARTICULAR PURPOSE IS LIMITED TO THE DURATION OF THE EXPRESS WARRANTY SET FORTH ABOVE Some countries states or provinces do not allow limitations on the duration of an implied warranty so the above limitation or exclusion might not apply to you This warranty gives you specific legal rights and you might also have other rights that vary from country to country state to state or province to province EN Warranty statement 23 7 TO THE EXTENT ALLOWED BY LOCAL LAW THE REMEDIES IN THIS WARRANTY STATEMENT ARE YOUR SOLE AND EXCLUSIVE REMEDIES EXCEPT AS INDICATED ABOVE IN NO EVENT WILL HP OR ITS SUPPLIERS BE LIABLE FOR LOSS OF DATA OR FOR DIRE
72. eplace the copier scanner separation pad the printer pickup roller and the printer separation pad when the parts are near the end of their life expectancies or if media frequently misfeeds 40 Chapter 3 Maintenance EN EN Replacing the printer pickup roller If the printer regularly misfeeds no media feeds through you might have to replace or clean the pickup roller CAUTION Failure to complete this procedure might damage the printer 1 Unplug the power cord from the printer and allow the printer to cool Open the toner cartridge door and remove the toner cartridge Locate the pickup roller Release the small white tabs on each side of the pickup roller by pushing them away from the roller and then rotate the pickup roller toward the front Gently pull the pickup roller up and out User replaceable parts 41 42 Chapter 3 Maintenance 6 Position the new pickup roller in the slot of the previous pickup roller Note Circular and rectangular pegs on each side prevent you from incorrectly positioning the pickup roller Rotate the top of the new pickup roller into position until the white tabs on each side of the roller snap the roller into place Co Reinstall the toner cartridge and close the toner cartridge door 9 Plug the printer in to turn it back on EN e Replacing the printer separatio
73. er assembly 6 88 RG0 1020 000CN Pickup gear assembly 6 89 RG0 1022 000CN Front guide assembly 1 90 RG0 1024 000CN Control panel assembly 12 89 RG0 1026 000CN Fuser assembly 220V 94 RG0 1029 000CN Engine controller PCB assembly 5 91 220 240V RG0 1030 000CN Fan assembly 3 90 RG0 1069 000CN Copier scanner pickup tray assembly 87 RG0 1070 000CN Face down tray assembly 87 RG0 1072 000CN Paper sensor PCB assembly 25A 92 RG0 1074 000CN Cable laser scanner 5 89 RG0 1082 000CN Delivery sensor PCB assembly 26 94 RG9 1483 000CN Transfer roller 10 89 RG9 1486 000CN Laser scanner assembly 4 89 RH2 5440 000CN Cable laser scanner flat flexible 13 89 RH7 1473 000CN Motor 13 90 RH7 5284 000CN Solenoid DC24V 9 90 RY7 5055 000CN Copier scanner separation pad 6 87 RY7 5081 000CN Clutch kit 19 92 192 Chapter 7 Parts and diagrams EN Table 35 Numerical parts list continued Part Number Description Ref Figure RY7 5082 000CN Screw kit contains a full set of screws for the LaserJet 1200 product WT2 5694 000CN Clamp cable 3 91 EN Numerical parts list 193 194 Chapter 7 Parts and diagrams EN Index Numerics 69T gear removing 101 A AC bias 65 AC power distribution 62 accessories ordering 169 accessory errors troubleshooting 134 acoustical emissions 18 adding paper 35 ADF optional copier scanner capacity 14 feeding problems troubleshooting 148 adhesive labels printing 35 alcohol cleaning with high voltage co
74. er to perform functions such as e Two way communication with the host computer through a bidirectional parallel or USB connection The printer can tell the host such things as the control panel status e isolation of print environment settings from one print job to the next For example if a print job is sent to the printer in landscape mode the subsequent print jobs print in landscape only if they are formatted for landscape printing Formatter system 57 Printer functions Printer functions are divided into five groups e engine control e formatter e image formation e laser scanner e pickup and feed The following figure is a block diagram of the printer unit Paan Optional copier scanner K AA 3 To external device host computer etc Lt ea a 1 TAN ECU Scanner CT motor i ft IMAGE 3 AA a ee FORMATION SYSTEM i unit sensitive Straight through aum trol output path i con nG i unit PAPER PICKUP FEED E SYSTEM Figure 14 Printer unit functional block diagram 58 Chapter 4 Operational overview EN Note EN Engine control unit power system The engine control unit ECU coordinates all print engine activities drives the laser and coordinates print data from the formatter with the image formation process The ECU also includes power supply and distribution circuitry In several other HP L
75. erfilled The item was too thick too slick or otherwise did not meet specifications The copier scanner pickup roller is dirty The copier scanner pickup roller is damaged or worn The copier scanner separation pad is dirty damaged or worn The sensor is not operating properly There is a problem in the copier scanner path 148 Chapter 6 Troubleshooting Solution The maximum document length is 889 mm 35 inches If your document is too long copy each segment of it and scan the copies Free the paper delivery sensor If you cannot free it replace it Be sure to center the paper with the media input tray guides Verify that the guides are not adjusted too tightly or too loosely against the paper Check for broken or missing guides and replace as necessary Remove the document from the media input tray Straighten the item then reinsert it Slide the guides against the sides of the item to center it Make sure the guides are not adjusted too tightly Remove some of the sheets The media input tray can hold up to 30 pages depending on the thickness of the pages Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Clean the copier scanner pickup roller See the user guide Replace the copier scanner pickup roller See the user guide Replace the copier scanner separation pad See Replacing the copier scanner separation pad
76. es 0 0 00 cee eee eee 168 Accessories 25 25 chad eon seme 6d on b ee ebeae ae 169 How to use the parts lists and diagrams 171 Common hardware a 171 Assembly locations 0 000 eee eee 172 Printer trays amp optional copier scanner 172 Ge PAT 174 Internal assemblies 0 AA 176 Internal components 1 0f2 176 Internal components 2 of 2 178 Electrical components 180 Paper pickup assembly 1 0f2 182 Paper pickup assembly 2 of 2 184 Fuser assembly a aa a AG atte eee at wr ak ear 186 Alphabetical parts list 0 000 cee eee 188 Numerical parts list 0 0 0 0 a 191 Chapter contents 167 Ordering parts and supplies Parts Order replacement parts from the following website http www hp com ssg parts direct order html Related documentation and software Order documentation and software from the companies listed in table 23 some documentation and software is available at the following websites Table 23 Technical support websites HP Customer Care Online http www hp com go support Software drivers support documentation and answers to frequently asked questions HP Technical Training http www hp com go North America resellertraining Classes and schedules Parts http outfield external hp com spi Parts inf
77. fications detailed in the Print Media Guide for the HP LaserJet printer family Gently shake the toner cartridge back and forth to redistribute the toner Clean the platen See Cleaning the scanner path on page 51 Errors 143 Table 18 Solving copying and scanning image quality problems continued Problem Copies or scanned images are too light or too dark Vertically aligned black streaks or smears appear on successive pages Bb Bb Bb Bb Bb Scanned images have black dots or streaks AQBbCc AaBbCce AQBbCc AQBbCc AaBbCce Cause The contrast is not set correctly The original image is very light or very dark The scanned image is too light or too dark because the original was on colored paper The printer needs to be cleaned There is ink glue white out or some other substance on the contact image sensor A component is damaged For example the photosenstive drum inside the toner cartridge is scratched There is ink glue correction fluid or some other substance on the contact image sensor There is a problem in the contact image sensor 144 Chapter 6 Troubleshooting Solution 1 Adjust the contrast and resolution settings from the HP LaserJet Copier software 2 Adjust the Quick Copy settings 3 Check that the contrast and resolution settings are correct See the user guide for more information Adjust the resolution and contras
78. h kah been 188 Numerical parts list ee 191 Tables 11 12 Chapter Tables EN EN Product information Chapter contents mie PA AA 14 Hardware description 0 0 0 eee eee 14 Firmware description 0 00000 eee eee eee 15 Product specifications 0 00 00 eee ees 16 Model and serial numbers 0 0 0000 eee eee 19 Overview of printer 1 ees 20 Front and side view 2 aa 20 Back and side view 0 0 eee ee ee 21 Overview of optional copier scanner 22 TOD VIEWa a md BG cue md KA ood ABABT tees MOMA NAAN 22 Warranty statement 0 0 eee 23 Extended warranty 0 000 aa 24 Toner cartridge information 0 0000 cece eee 25 Refilled toner cartridges 25 Recycling toner cartridges 25 Chapter contents 13 Introduction The HP LaserJet 1200 printer is designed to e Print Print documents easily with the laser quality you have come to expect from an HP LaserJet printer With the optional copier scanner you can e Copy Make superior laser quality copies With the software you can make up to 99 copies of a 30 page original You can also enlarge reduce adjust contrast and collate e Scan Scan important documents to create electronic files Hardware description The printer provides 1200 dot per inch dpi printing The optional copier scanner scans at
79. harging roller Pressure roller 44 High voltage power supply circuit Printer functions 63 Image formation system Laser printing requires the interaction of several different technologies including electronics optics and electrophotographics to provide a printed page Each process functions independently and must be coordinated with the other printer processes Image formation consists of seven processes Electrostatic latent image formation stage pe ee eee ee ee ee eS eS ee ee Se See eS Se BB ee l 2 Scanning exposure l Se eS AA ee AA lt Flow of paper t Direction of drum rotation 1 Primary charging q 3 Developing Developing stage Paper delivery anag 3 Transfer stage Figure 18 Image formation block diagram Toner cartridge As the focal point of the image formation system the toner cartridge houses the cleaning conditioning and developing stages of the process The toner cartridge contains the photosensitive drum primary charging roller developing station toner cavity and cleaning station By including these components which wear degrade or are consumed in the replaceable toner cartridge the need for many service calls is eliminated The special photosensitive properties of the drum form an image on the drum surface and then transfer the image to media CAUTION The printer toner cartridge does not i
80. he photosensitive drum is transferred to media Step 7 After the image is transferred the media enters the fuser assembly where heat from the fuser and pressure from the pressure roller permanently bond the toner image to media The paper delivery sensor PS401 determines that media has successfully moved out of the fusing area Step 8 The fuser assembly exit rollers deliver media to either the paper output bin or the straight through output path depending upon the position of the straight through output path door EN Printer functions 67 m CU POSNS PAPERSNS Face up delivery roller MAIN MOTOR DRIVE signals TOP OF PAGE signal PISNS PAPER OUT DETECTION signal Face down delivery roller 4 DELIVERY PAPER DETECTION signal PICKUP SOLENOID DRIVE signal CPUD of O Fusing film unit A Z r BEA Photosensitive pt PS401 Aha cover ie ng ad Priority input tra i Pressure DON Aa roller M Pickup mo i l INO alici NA Main input tray i Transfer e charging f roller i A PI PS40 E A pad Vion Figure 19 Printer path 68 Chapter 4 Operational overview Jam detection The paper out sensor PS201 detects the presence of media in either the priority input tray or the main input tray The paper top sensor PS402 and the paper delivery sensor P5401 detect media moving through the printer If a jam is detected the ECU imm
81. he black sponge transfer roller Contaminants on the roller can cause print quality problems EN Note Note EN Cleaning the print path Use this process if you discover toner specks or dots on printouts This process produces a transparency with toner debris which should be discarded This process requires a transparency to remove dust and toner from the print paper path Do not use bond or rough paper Make sure the transparency you use meets media requirements for the printer lf transparency film is unavailable you can use paper If you must use paper perform the procedure two or three times to ensure proper cleaning 1 Load a transparency in the priority input tray Make sure that the printer is in the Ready state Press and hold the Go button for 10 seconds The transparency feeds through the printer slowly Discard the transparency After you press and hold the Go button the three printer lights blink until the cleaning process is complete Cleaning the equipment 47 48 Chapter 3 Maintenance Cleaning the toner cartridge area Cleaning the toner cartridge area can improve the quality of your printed sheets WARNING Before cleaning the printer disconnect it from the power source and wait for the printer to cool 1 Open the toner cartridge door and remove the toner cartridge CAUTION To prevent damage do not expose the toner cartridge to light Cover the toner cartridge if necessary A
82. hole in front of the paper feed roller shaft see callout 2 on page 125 The top of the sensor flag callout 2 should move freely Removing the paper feed mechanism 4 of 4 Bottom assemblies 127 128 Chapter 5 Removal and replacement EN EN Troubleshooting Chapter contents Basic troubleshooting eee eee 130 EO e maa ds ANNA MINANANG DAGA ee ee AN 132 Control panel light messages 132 Fatal error secondary messages 135 Checking the toner cartridge 137 Solving image quality problems 138 Solving paper feed problems 146 Solving print paper feed problems 146 Solving copying and scanning paper feed problems 148 Functional checks 0 0 149 Engine test 00 eee 149 Half self test functional check 150 Drum rotation functional check 151 Heating element check 152 High voltage power supply check 153 Paper pathcheck 0 eee eens 155 Service mode functions 4 aa 156 NVRAM initialization cold reset 156 PJL software commands 156 Troubleshooting toolS 0 0 eee 159 Internal reports 20 0 0 cee es 159 Repetitive image defect ruler 161 Main WING noanoa a 162 Locations of connectors 164
83. hree spade connectors callout 1 2 Disconnect the motor cable connector callout 2 on the side of the motor 3 Unplug the fuser cable connector callout 3 by pressing and releasing the tab on the back of the connector 4 Unplug all other cable connectors callout 4 from the ECU a a e Wo Pal Figure 64 Removing the ECU pan 1 of 4 120 Chapter 5 Removal and replacement EN Figure 65 EN 5 Unplug the flat flexible cable from the ZIF connector callout 1 on the formatter 6 Remove two screws callout 2 on each side of the printer Removing the ECU pan 2 of 4 Bottom assemblies 121 7 Gently pull the two sides of the printer away from the ECU pan to release the ECU pan 8 Slide the ECU pan out and away from the printer Note The entire ECU board can be replaced as a single unit Only soldered cables ship with the replacement board if other cables are damaged during removal you will have to purchase new ones a mik y r i f h IR Pk s WA f 4 E Figure 66 Removing the ECU pan 3 of 4 122 Chapter 5 Removal and replacement EN 9 Remove five screws callout 1 10 Lift the ECU out of the ECU pan LOLBO6OD aF E Da Z mi Ti po Figure 67 Removing the ECU pan 4 of 4 EN Bottom assemblies 123 Paper feed assembly 1 Remove the left side back and right side covers see pages 80 through 86 Remove the right plate as
84. ia Guide for the HP LaserJet printer family EN Table 19 Solving print paper feed problems continued Problem The printer feeds multiple sheets or jams frequently from the main input tray or priority input tray EN Cause Paper guides are not adjusted properly Paper was not removed from the main input tray before refilling the tray The main input tray is overfilled The priority input tray is overfilled The paper was poorly cut by the manufacturer and is sticking together The paper does not meet HP s specifications for print media The output capacity was exceeded in the paper output bin The pickup roller is dirty The pickup roller is damaged The separation pad is dirty The separation pad is damaged A sensor is not operating properly Solution Slide the guides against the sides of the stack in the main input tray or the priority input tray to center the paper Make sure the guides are not adjusted too tightly Always remove paper from the main input tray before refilling it Remove some of the sheets The main input tray can hold up to 250 sheets of 20 Ib 75 g75 g m bond weight paper less for heavier paper or from 20 to 30 envelopes Remove some of the sheets The priority input tray can hold up to ten sheets of 20 Ib 75 g m bond weight paper one sheet of heavier paper or one envelope Break the ream of paper by curving it into an upside down u
85. ich melt the toner and press it into the media 7 Drum cleaning stage During this process the cleaning blade is in contact with the surface of the drum at all times As the drum rotates during printing it wipes excess toner off the drum and stores it in the waste toner receptacle 66 Chapter 4 Operational overview EN Printer paper feed system Step1 The main input tray and the priority input tray merge into one main input area Media placed in any of these areas enables the paper out sensor P5201 which informs the ECU that media is present The following steps occur when the printer receives a print job Step 2 The ECU enables the laser scanner assembly and the motor Paper motion begins when the ECU energizes the solenoid SLO01 Step 3 The paper pickup roller rotates once The paper lift plate pushes the media against the pickup roller Step 4 The pickup roller grabs the top sheet and advances it to the feed assembly drive rollers To ensure that only one sheet is fed a main separation pad and two subpads hold the remainder of the stack in place Step 5 The feed assembly drive rollers advance the media to the paper top sensor PS402 This sensor informs the ECU of the exact location of the leading edge of media so that the image being written on the photosensitive drum can be precisely positioned on the page Step 6 The feed assembly drive rollers then advance the media to the transfer area where the toner image on t
86. information e Envelopes Load envelopes with the narrow stamp side forward and the side to be printed facing up See the user guide for more information e Letterhead or preprinted forms Load with the top forward and the side to be printed facing up See the user guide for more information e Cards and custom sized media Load with the narrow side forward and the side to be printed facing up See the user guide for more information Loading media 35 Loading media to copy or scan To load originals in the optional copier scanner 1 Load the original with the side to be scanned facing up If you scan a business card a Load it with the long side callout 1 facing forward and the text facing up b Use the straight through output path See the user guide for more information Adjust the media guides Press SCAN to scan or press Copy for a copy Note When you add new originals always remove the originals from the input tray and straighten the stack CAUTION Small originals will cause a jam if they are not loaded correctly Figure 10 Scanning a business card Note If you are editing text OCR make sure that the top edge of the original is the leading edge and make sure that the text is facing up For more information see the user guide 36 Chapter 2 Installation and operation EN Figure 11 Figure 12 Note EN Printer output paths Output bin The output bin is located on the top of the printer
87. ing 137 153 drum rotation check 151 extending life of 56 high capacity 14 life expectancies 40 operations 64 65 part numbers 169 recycling 25 refilled 25 removing 78 tools required 77 top cover removing 87 trailing edge detection 69 Training HP Technical 168 transfer roller cleaning around 46 life expectancy 40 observing 155 operations 65 power supply 63 removing 96 transfer stage image formation process 65 transparencies carrier sheets creating 34 cleaning print path with 47 loading 35 trays See main input tray priority input tray troubleshooting steps 130 TrueType fonts included 15 truss head screws 171 two way communications 55 57 U Universal Serial Bus See USB unplugging printer 77 upper metal shield pickup assembly 116 USB cable ordering 169 interface 55 port locating 21 user replaceable parts 40 204 Index V vacuums cautions against 48 variables NVRAM 156 157 ventilation requirements 28 vertical black streaks troubleshooting 144 vertical defects troubleshooting 141 vertical lines troubleshooting 139 vertical white stripes troubleshooting 143 VIDEO signals 73 voltage DC power supply 62 high voltage power supply 63 overvoltage protection 62 part numbers based on 171 W WAIT period 73 warranty extended 24 refilled cartridges impact on 25 statement 23 waste toner receptacle 66 wave troubleshooting 142 146 websites 168 weight printer 16 toner cartridge 137 white sheet cle
88. ing out curled or wrinkled Print is misaligned on the page skewed pages Cause Paper curl is inherent to the laser printing processes and occurs when paper is subjected to heat Paper curl tends to relax as the paper cools while resting on a flat surface Paper is curled or wrinkled when using the paper output bin Paper is not stored properly The media is too long for the printer output bin The fuser temperature is too high The main input tray is overfilled The paper guides are not set correctly are broken or are missing The paper s weight or surface finish does not meet HP s specifications 146 Chapter 6 Troubleshooting Solution Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Open the straight through output door on the back of the printer and use this paper path Reset the fuser mode to the default Whenever possible store paper in its sealed ream at room temperature Use the long media extension Select Optimize for in the Paper tab of the printer driver Make sure that it is set for the appropriate media Remove some of the media Be sure to center the paper with the side media guides Verify that the guides are not adjusted too tightly or too loosely against the paper Check for broken or missing guides and replace as necessary Make sure that the media meets specifications detailed in the Print Med
89. ition such as paper with tears wrinkles or bent edges can jam Avoid envelopes that have a very slick finish ones that have self stick adhesives or those with clasps or windows Also avoid envelopes with thick irregular or curled edges or areas that are wrinkled torn or otherwise damaged Use a sturdy envelope of approximately 60 to 90 g m 16 to 24 Ib weight Use tightly constructed envelopes and make sure that the folds are sharply creased The main input tray can hold up to 250 sheets of 75 g m 20 Ib print media The priority input tray can hold up to 10 sheets one envelope or one piece of heavy media Both can be adjusted to hold media measuring from 76 2 by 127 mm 3 by 5 inches to 216 by 356 mm 8 5 by 14 inches This includes but is not limited to the following paper and envelope sizes Table 10 Media types Paper type Metric English Letter 216 by 279 mm 8 5 by 11 in Legal 216 by 356 mm 8 5 by 14 inches Executive 184 by 267 mm 7 25 by 10 5 inches A4 210 by 297 mm 8 25 by 11 75 inches COM10 Envelopes 105 by 241 mm 4 13 by 9 5 inches DL Envelopes 110 by 220 mm 4 33 by 8 67 inches C5 Envelopes 162 by 229 mm 6 4 by 9 inches B5 Envelopes 176 by 250 mm 6 9 by 9 85 inches Monarch Envelopes 98 5 by 191 mm 3 88 by 7 5 inches Custom size media custom custom Narrow and heavy media can cause the printer to print slower Selecting media 33 Selecting media to copy or scan The copier scanner for the p
90. kup assembly 1 of 2 Figure 92 Paper pickup assembly 1 of 2 182 Chapter 7 Parts and diagrams EN EN Part numbers Table 31 Paper pickup assembly 1 of 2 Ref Part number Description Qty RG0 1003 000CN Paper pickup assembly 1 10 RA0 1072 000CN Grounding plate 1 11 RA0 1035 000CN Torsion spring 1 19 RY7 5081 000CN Clutch kit 1 23 RG0 1007 000CN Paper pickup shaft assembly 1 25 RG0 1005 000CN Feed roller holder assembly 1 25A RG0 1072 000CN Paper sensor PCB assembly 1 28 RA0 1200 000CN Torsion spring 1 Internal assemblies 183 Paper pickup assembly 2 of 2 Paper pickup assembly 2 of 2 Figure 93 EN 184 Chapter 7 Parts and diagrams EN Part numbers Table 32 Paper pickup assembly 2 of 2 Ref Part number Description Qty 2 RAO 1003 000CN Foot rubber paper pickup 2 assembly 22 RG0 1006 000CN Paper lift plate assembly 1 24 RF0 1014 000CN Separation pad 1 Internal assemblies 185 Fuser assembly Figure 94 Fuser assembly 186 Chapter 7 Parts and diagrams EN EN Part numbers Table 33 Fuser assembly Ref Part number RG9 1493 000CN Description Fuser assembly 110V RG9 1494 000CN Fuser assembly 220V RF0 1003 000CN Face up roller RG0 1010 000CN Face down delivery assembly RA0 1088 000CN G
91. l panel has two lights and one lighted button These lights produce patterns that identify the printer status Ready light green Go button and light green Figure 7 Printer control panel e Go button and light Prints self test pages To print a self test page or to continue printing while in manual feed mode press and release the Go button e Ready light Indicates that the printer is ready to print e Attention light Indicates that the main input tray is empty toner cartridge door is open toner cartridge is missing or other errors EN ldentifying printer components 29 Figure 8 Control panel light patterns O Light off O Light on X Light blinking Light status legend Table 9 Control panel light messages Light status O gle O ODO 71 O O Po CES Condition of the printer Ready The printer is ready to print Processing The printer is receiving or processing data Manual feed or out of memory The printer is in manual feed mode or out of memory You can continue printing 30 Chapter 2 Installation and operation Action No action is necessary To print a self test page press and release the GO button on the printer control panel Wait for the job to print Make sure that you have loaded the correct media To continue printing press and release the GO button The software controls manual feed If you do not want the printer to be in manual feed mo
92. ler 0 161 Main wiring 0 ee ee eee ee eens 162 Locations of connectors 000 ee ee 164 Locations of LEDs jumpers and switches 165 7 Parts and diagrams Chapel COMES AA 167 Ordering parts and supplies aa 168 PONG AA AA AA 168 Related documentation and software 00 eee eee eee 168 CONSUMADICS AA AA 168 PCCCSSONCS earan onarena AR GL BA KA AG O ee Oe a 169 How to use the parts lists and diagrams aa 171 Common hardware anaana aaa eaa eaa 171 Assembly locations nananana a 172 Printer trays amp optional copier scanner anaana 172 Fe AAP 174 Internal assemblies a 176 Internal components 1 Of 2 anaana ce ees 176 Internal components 2 Of 2 0 ees 178 Electrical components a 180 Paper pickup assembly 1 of 2 eens 182 Paper pickup assembly 2 of 2 eens 184 Fuser assembly enh era a ate kaos AAG we RGA eA Oe AG eee 186 Alphabetical parts list acsae02 660448 6 ELEM LALAKAD ANNE heat 188 Numerical parts list 2 eee ene 191 6 Contents EN Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Fig
93. lo serq abed usamjo ro lq jog JO1JUOD injejadwa JUL seiq aAijebaN zaon 104 U09 D001 soull qg UuOIssIWUe pado abeyOA Jojsuell Z 9q seiq Buidojanag 14 9v seiq Buidojaneq a lor 9a eBeyon Mewnd a le 9v ebejoa Mewnd ae L02Sd Josuas Alanijap Jadeg ZOOSd 10sues do sedeg 1001S plougjos dn Yo1d LOSIN 1010Ww Jduueos LOON 010w ure puewwos dn y3ld LOZH 4a1eay buni 4 AGLs HIS1 1NIHd HINI AGLs LIVM souenbeg N spuosas un NO Jemod ing diagram Im General t Figure 22 EN 74 Chapter 4 Operational overview EN Removal and replacement Chapter contents Removal and replacement strategy Required tools Before performing service Toner cartridge Parts removal order COVEIS ca a KG don dee oo KG AKA Left side cover Optional copier scanner Backcover Right side cover TOP COVer 1 ee eee Control panel assembly Front cover assembly Internal assemblies Transfer roller Formatter Laser scanner assembly Fuser assembly Output rollers Fan assembly Right plate assembly Pickup assembly Chapter contents 75 Pickup roller shaft
94. lso do not touch the black sponge transfer roller inside the printer Touching it can reduce the print quality of output 2 Wipe the media path area and the toner cartridge cavity with a dry lint free cloth Note Use only a dry lint free cloth to remove dust and toner Using a vacuum or other device to clean inside the product can damage it 3 Replace the toner cartridge and close the toner cartridge door 4 Plug the power cord back into the printer EN Cleaning the printer pickup roller If you want to clean the pickup roller rather than replace it follow the instructions below Remove the pickup roller as described in O steps 1 through 5 of Replacing the printer pickup roller on page 41 y C 1 Dampen a lint free cloth in isopropyl a7 alcohol and scrub the roller WARNING Alcohol is flammable Keep the alcohol and cloth away from an open flame Tas Before you close the printer and plug in the power cord allow the alcohol to dry TITI completely tay IN 2 Using a dry lint free cloth wipe the i pickup roller to remove loosened oe dirt 3 Allow the pickup roller to dry completely before you reinstall it in the printer To reinstall the pickup roller see steps 6 through 9 of Replacing the printer pickup roller on page 42 EN Cleaning the equipment 49 50 Chapter 3 Maintenance Cleaning the printer separation pad
95. ma hp LaserJet 1200 series service HP LaserJet 1200 Series Service Copyright Information 2001 Hewlett Packard Company All Rights Reserved Reproduction adaptations or translation without prior written permission is prohibited except as allowed under copyright laws Part number C7044 90906 First edition April 2001 Printed in USA Warranty The information contained in this document is subject to change without notice Hewlett Packard makes no warranty of any kind with respect to this information HEWLETT PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Hewlett Packard shall not be liable for any direct indirect incidental consequential or other damage alleged in connection with the furnishing or use of this information NOTICE TO U S GOVERNMENT USERS RESTRICTED RIGHTS COMMERCIAL COMPUTER SOFTWARE Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data Clause at DFARS 52 227 7013 Hewlett Packard Company 11311 Chinden Boulevard Boise Idaho 83714 U S A Trademark Credits Microsoft Windows and MS DOS are U S registered trademarks of Microsoft Corporation TrueType is a U S trademark of Apple Computer Inc All other products mentioned herein may be trademarks of their respective companies Safety Informatio
96. messages eee 30 MEGA DO S aaa man ost kaaa ADA IDEA APA AA 33 Life expectancies of consumables 40 Basic sequence of operation 0 0 eee 73 Basic troubleshooting 0 0 a 130 Control panel lights legend 2 0 132 Control panel light messages 0 0 133 Fatal error secondary messages 135 Solving print image quality problems 0 000 eae 138 Solving copying and scanning image quality problems 143 Solving print paper feed problems 00 2000 eee 146 solving copying and scanning paper feed problems 148 NVRAM PJ factory variables A A aa 157 OWNCN TUNCUONS raa ears DINA ce eee toad eee a ee 165 Technical support websites 0 0 000 cee ee ees 168 PCCESSONCS tac ated oUt DAA Realy Bea nt PRN gd ac WG ioe A 169 Common fasteners eee ee eee 171 Printer trays and optional copier scanner 173 GOV ELS aide AA eae AA anid bee a AND ath hea ee ae 175 Internal components 1 of 2 0 2 0 ce ees 177 Internal components 2 Of 2 anaana naaa aa 179 Electrical components 71 naaa maa 68 aaa eae er aaeaieds be tus 181 Paper pickup assembly 1 of 2 0 2 ee ee ees 183 Paper pickup assembly 2 of 2 0 cece eee 185 Fuser assembly 4 aa ANA ANAKAN wee oe ahah ee HUA LAENG vt 187 Alphabetical Parts 16 t303 kada mak ha aha
97. n WARNING Potential Shock Hazard Always follow basic safety precautions when using this product to reduce risk of injury from fire or electric shock 1 Read and understand all instructions in the user guide 2 Observe all warnings and instructions marked on the product 3 Use only a grounded electrical outlet when connecting the HP LaserJet 1200 printer to a power source If you don t know whether the outlet is grounded check with a qualified electrician 4 Do not touch the contacts on the end of any of the sockets on the HP LaserJet 1200 printer Replace damaged cords immediately 5 Unplug this product from wall outlets before cleaning 6 Donot install or use this product near water or when you are wet 7 Install the product securely on a stable surface 8 Install the product in a protected location where no one can step on or trip over the power cord and the power cord will not be damaged 9 Ifthe product does not operate normally see the online user guide 10 Refer all servicing questions to qualified personnel Information regarding FCC Class B Parts 15 and 68 requirements can be found in the user guide Contents 1 Product information Chapter contents a 13 KONO a ga ga gh oet ean eee oa E LOLA Renee ao eee en mee eae 14 Hardware description 0 naa cc eee tees 14 Firmware description 0 ee eens 15 Product specifications n a ee daw ween ee ee
98. n is taking place If all lights blink for a half second or longer in a sequence The printing is initializing All previously sent print jobs are being deleted from the printer memory A cleaning page is printing The printer has a fatal error All lights are on The printer has an accessory error All lights are blinking 134 Chapter 6 Troubleshooting Solutions No action is necessary 1 Turn the printer off and back on 2 Unplug the printer for 5 minutes plug it back in and turn it on 3 If the printer still has an error press the Go button and see table 16 Fatal error secondary messages on page 135 1 Remove the DIMM and reseat it 2 If the printer still has an error replace the DIMM EN Fatal error secondary messages If the printer has a fatal error press and hold the Go button to see the secondary error message Table 16 Fatal error secondary messages Message EN Engine error The formatter and engine are not communicating Laser scanner error The laser scanner has a malfunction Beam error Motor error Fuser error The fuser has a malfunction Solution 1 Unplug the printer and plug it back in 2 Reseat the formatter to ECU cable 3 Replace the formatter PCA 4 Replace the ECU See ECU pan on page 120 1 Check the laser scanner cable connections 2 Replace the laser scanner 1 Check the laser scanner cable connections 2
99. n pad Note Before you change the separation pad clean the pickup roller See Cleaning the printer pickup roller on page 49 for instructions If the input tray feeds more than one page at a time you might have to replace the printer separation pad Recurring feed problems indicate that the printer separation pad is worn 1 Unplug the power cord from the printer and allow the printer to cool Remove the input trays Locate the blue separation pad To pry the separation pad up from the spring loaded base insert a flat edged screwdriver in the slot under the separation pad and twist until the tabs are free 5 Reach in through the input tray opening push the spring loaded base down with one hand and pull the separation pad up with the other hand User replaceable parts 43 44 Chapter 3 Maintenance 6 With one hand reach through the input tray opening and push the spring loaded base down With the other hand position the new separation pad in the slot of the previous separation pad Note The tab on the right is larger to help you position the separation pad correctly 7 Snap both sides of the separation pad firmly into place CAUTION Make sure that the separation pad is straight and that there is no space between the separation pad and the spring loaded base If the separation pad is not straight or you see space on one side remove the separation pad make sure that the larger tab is
100. nal Extended Capabilities Port ECP mode interface or Universal Serial Bus USB interface and converts it into a dot image The ECU synchronizes the image formation system with the paper feed system and signals the formatter to send the print image data The formatter sends the print image data dots in the form of a video signal and the printing process begins Central processing unit The formatter incorporates an embedded Coldfire V3 microprocessor operating at 90 MHz RAM e One bank of Non Volatile RAM NVRAM stores parameters e Dynamic random access memory DRAM provides temporary storage of copy scan and print data Parallel interface or Universal Serial Bus interface The formatter receives incoming data through its bidirectional ECP or USB interface This interface provides high speed two way communication between the printer and the host allowing you to change printer settings and monitor printer status from the host computer Formatter system 55 Control panel e three front panel status lights one contained in the Go button e GO button Draft mode Depending on which printer driver is used selecting draft or EconoMode from the printer driver allows the printer to use approximately fifty percent less toner extending the life of the toner cartridge MEt HP MEt effectively doubles the standard memory through a variety of font and data compression methods Enhanced I O The Enhanced I O feature allo
101. nclude a light blocking shutter Do not expose the drum to light which can permanently damage the drum Protect the toner cartridge whenever removing it from the printer 64 Chapter 4 Operational overview EN EN Breakdown of the seven image formation processes 1 Conditioning stage primary charging This process applies a uniform negative charge to the surface of the drum with the primary charging roller which is located in the toner cartridge The primary charging roller is coated with conductive rubber An AC bias is applied to the roller to erase any residual charges from any previous image In addition the primary charging roller applies a negative DC bias to create a uniform negative potential on the drum surface The print density setting modifies the DC voltage Writing stage scanning exposure During this process a modulated laser diode projects the beam onto a rotating scanning mirror As the mirror rotates the beam reflects off the mirror first through a set of focusing lenses then off a mirror and finally through a slot in the top of the toner cartridge and onto the photosensitive drum The beam sweeps the drum from left to right discharging the negative potential wherever the beam strikes the surface This creates a latent electrostatic image which later is developed into a visible image Because the beam sweeps the entire length of the drum while the drum rotates the entire surface area of the drum can be
102. ng application to send a print job to the printer If the optional copier scanner is installed is the copy function operational Place the self test page into the media input tray and copy it to the printer The report should feed smoothly through the copier scanner path and copies should print without print quality problems The cable is not connected correctly Reconnect the cable An incorrect printer driver is selected Select the correct printer driver Other devices are connected to the parallel port Disconnect the other devices and try again to print There is an LPT port driver problem The formatter has failed Copier scanner motor does not rotate Reset the computer port settings See your computer user guide for instructions Replace the formatter 1 Run a self test page and verify that the optional copier scanner is present See To print a self test page on page 159 2 Unplug the printer verify that the copier scanner connector is seated in the formatter and plug the printer back in 3 If the printer still has an error replace the copier scanner Poor copy quality 1 If the print quality from the internal tests was acceptable but the print quality of the copies is not clean the contact image sensor and the white sheet 2 If the print defect persists replace the copier scanner assembly Media does not move smoothly through the copier scanner
103. nnection points 153 154 pickup roller 49 printer separation pad 50 scanner path 52 alignment specifications 18 troubleshooting 141 146 alphabetical list part numbers 188 amber light Attention 29 arrays copier scanner optical system 71 assemblies internal 176 Attention light 29 automatic document feeder optional copier scanner capacity 14 feeding problems troubleshooting 148 B back cover removing 82 background gray 140 base memory 14 beam detect BD signal 65 beam errors 135 bidirectional communications 55 57 bin output capacity 14 locating 22 long media extension locating 20 printing to 37 bits per pixel bpp maximum 14 black dots troubleshooting printed pages 139 142 scanned images 144 black streaks troubleshooting 144 EN blinking lights 132 block diagrams image formation 64 printer functions 58 bpp bits per pixel maximum 14 breaking paper reams 147 buffer memory 56 business cards copying or scanning 34 buttons copier scanner control panel 32 printer control panel 29 bypassing formatter 149 C cables ECU 122 interface ordering 169 calibrating copier scanner 51 canceling copies or scans 32 capacity input trays 33 output bin 14 cards copying or scanning 34 printing 35 carrier sheets 34 cartridge area cleaning 48 cartridge door locating 20 removing 91 cartridges checking 137 153 drum rotation check 151 extending life of 56 high capacity 14 life expectancies 40 operations 64
104. of HP LaserJet 1200 printer Category Specification Print resolution 1200 dpi Print speed 15 ppm Letter 14 ppm A4 Table 5 Performance of optional copier scanner Category Scan resolution Copy speed Specification 600 dpi optical with 256 levels of gray and 24 bit color 12 ppm EN Introduction 17 Table 6 Print operating acoustical emissions specifications Category Specification Sound Power Level 6 1 B A Lwag 1 bel 10 decibels Sound Pressure Level 56 dB A L Am operator position Sound Pressure Level 48 dB A Lpam bystander position Table 7 Copy operating acoustical emissions specifications Category Specification Sound Power Level 6 4 B A Lwag 1 bel 10 decibels Sound Pressure Level 60 dB A L Am operator position Sound Pressure Level 50 dB A Lp pam bystander position Table 8 Skew specifications Category Specification Print skew left 0 8 2 mm over 250 mm in length for cut sheet media 1 5 3 3 mm over 220 mm in length for cut sheet media 0 87 1 65 mm over 190 mm in width for cut sheet media Print skew right 1 5 3 3 mm over 220 mm in width for envelopes postcards A5 and cut sheet media Cut sheet leading 0 87 1 6 mm over 190 mm in width edge skew Scan skew 1 2 18 Chapter 1 Product information EN Model and serial numbers Figure 1 EN The mo
105. on page 45 Check the sensor to make sure it is not jammed If a sensor cannot be corrected replace the copier scanner assembly Check the path for obstructions Readjust as necessary or replace the copier scanner assembly EN Functional checks Engine test The engine test is used to verify that the print engine is functioning correctly The formatter is bypassed during an engine test so the engine test is useful for isolating printer problems The engine test prints horizontal lines down the entire printable area of a page and is also useful for checking and adjusting registration Printing an engine test The engine test switch is inside the left cover below the formatter To print an engine test remove the left side cover See Left side cover on page 80 and depress the engine test switch A single test page will print Note The formatter must be connected to the ECU to perform an engine test See callout 1 in figure 65 on page 121 Otherwise the printer does not print When you remove the left side cover you must override the door interlock SW 301 See Paper path check on page 155 ae pa a Figure 73 Engine test switch EN Functional checks 149 Half self test functional check The electrophotographic process can be subdivided into the following stages image formation stage charges the drum and writes a latent image to the drum with the laser development stage forms a
106. ority input tray capacity 33 feeding operations 67 feeding problems troubleshooting 147 loading 35 locating 20 processor formatter 55 production code 19 Q quality troubleshooting copies and scans 143 printed pages 138 repetitive image defect ruler 161 Quick Copies making 32 settings 156 R RAM base 14 formatter 55 Ready light 29 reams breaking 147 recalibrating copier scanner 51 receptacle power 21 recycled paper 33 recycling toner cartridges 25 redistributing toner 137 reduction settings 138 145 refilled toner cartridges 25 removing parts 77 79 repetitive defects troubleshooting 141 161 replacement intervals consumables 40 recycling used toner cartridges 25 toner cartridges 14 replacement parts See parts replacing parts 77 79 202 Index reports printing 159 residual paper jams 69 resistance heating element 152 resizing scanned images 145 Resolution Enhancement technology REt 15 resolution maximum 14 restoring factory defaults 156 revision level 19 right plate assembly removing 112 right side cover removing 84 rod lens array 71 rollers life expectancies 40 observing 155 ROM base 14 restoring factory defaults 156 rotation drum 151 motor 130 155 ruler repetitive defect 161 S SCAN button 32 scan skew 18 scanner assembly See laser scanner assembly scanner path cleaning 51 scanner See copier scanner scanning exposure stage image formation process 65 scatter toner 142 s
107. ormation welcome htm Consumables Printer consumables are listed in chapter 3 Maintenance in table 11 on page 40 Consumables are available directly from Hewlett Packard at the following numbers e US 800 538 8787 e Canada 800 387 3154 in Toronto 416 671 8383 e United Kingdom 0734 441212 e Germany 0130 3322 Contact your local HP Parts Coordinator for other local phone numbers 168 Chapter 7 Parts and diagrams EN Accessories Table 24 Accessories hem Description Partnumber memory modules 16 MB C7843A DIMMs 32 MB C7845A 64 MB C7846A Toner cartridge 2 500 page cartridge C7115A 3 500 page cartridge C7115X Cables and 2 meter IEEE 1284 parallel cable C2950A interface 3 meter IEEE 1284 parallel cable C2951A accessories 2 meter USB cable 8121 0539 2 feet USB cable 8121 0549 Power cord US Canada 8120 6812 Power cord Europe 8120 6811 Power cord Switzerland 8120 6815 Power cord UK 8120 6809 Power cord Danish 8120 6814 Power cord SA 8120 6813 Power cord Israel 8120 6800 HP JetDirect print 175X J6035 60001 servers Power modules Australia New Zealand and Argentina 0950 3172 INPUT 240 Vac 50 Hz NOTE If two OUTPUT 13 VDC 300 ma parts are listed for Australia New Zealand and Argentina 0950 3358 one country or INPUT 240 Vac 50 Hz region you can OUTPUT 13 VDC 800 ma use either part regardless of the China 0950 2806 output rating INPUT 220 Vac 50 Hz OUTPUT 13 V
108. out of memory The printer has an error The door is open the media is out the toner cartridge is installed incorrectly or the paper is jammed Solutions No action is needed To print a self test page press and release the Go button on the control panel Wait for the job to print To turn off the manual feed mode change the printer property setting See the Printer properties section in the user guide for more information 1 The page currently printing might be too complex for the printer memory To continue printing press and release the Go button The printer might print a partial page or the quality might be lower than normal 2 Lower the resolution See the Understanding print quality settings section in the user guide 3 Add more memory See the Memory section in the user guide 1 Check that the toner cartridge door is completely closed 2 Load media into the correct input tray 3 Check that the toner cartridge is correctly installed in the printer See Toner cartridge on page 78 for more information 4 There is a paper jam See Functional checks on page 149 for more information 5 Check that the door and toner cartridge interlocks are operating correctly See Paper path check on page 155 for more information about the door interlock Errors 133 Table 15 Control panel light messages continued Message Possible causes A printer initializatio
109. oving the fuser assembly 4 of 4 To reinstall Remove the large gear from the end of the fuser assembly return the fuser assembly to the chassis and replace the large gear 104 Chapter 5 Removal and replacement EN Figure 49 EN Output rollers Face down delivery assembly 1 Remove the fuser assembly see page 101 2 Remove two screws callout 1 and lift the face down delivery assembly away from the fuser assembly Removing the output rollers 1 of 2 Internal assemblies 105 Face up roller 1 Turn the fuser assembly over 2 Remove the gear callout 1 from the face up roller and release the tab callout 2 on the face up roller bushing Rotate the face up roller bushing forward until the pin releases Slide the face up roller away from the gear side and lift it out of the fuser assembly Figure 50 Removing the output rollers 2 of 2 Reinstall note Flex the face up roller bushing to pop the pin back into place 106 Chapter 5 Removal and replacement EN Note Figure 51 EN Motor You might find it easier to remove the ECU pan see page 120 before you remove the motor Remove the left side back and right side covers see pages 80 through 86 1 Remove the fuser assembly see page 101 2 Disconnect the motor cable connector callout 1 on the side of the motor 3 Remove the two screws callout 2 from the motor and lift the motor out of the printer Removing the motor
110. p view Figure 4 Top view Media input tray guides Copier scanner door Straight through output door Copier scanner door release button Long media extensions Media output bin Copier scanner control panel O N O 0A A GO N Media input tray Note See Optional copier scanner on page 81 for more information about removing the optional copier scanner from the printer 22 Chapter 1 Product information EN Warranty statement DURATION OF WARRANTY One year from date of purchase 1 HP warrants to you the end user customer that HP hardware accessories and supplies will be free from defects in materials and workmanship after the date of purchase for the period specified above If HP receives notice of such defects during the warranty period HP will at its option either repair or replace products NG prove to be defective Replacement products may be either new or ike new 2 HP warrants to you that HP software will not fail to execute its programming instructions after the date of purchase for the period specified above due to defects in material and workmanship when properly installed and used If HP receives notice of such defects during the warranty period HP will replace re aka media which does not execute its programming instructions due to such efects 3 HP does not warrant that the operation of HP products will be uninterrupted or error free If HP is unable within a reasonable time to repair or r
111. pages 80 through 86 and open the toner cartridge door Loosen two screws callout 1 on the back of the printer Remove two screws callout 2 on the top of the printer Lift the cover off of the printer IL Sa Figure 31 Removing the top cover EN Covers 87 Control panel assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Disconnect the control panel cable callout 1 from the formatter Remove two screws callout 2 and callout 3 from the top of the control panel assembly Note The first screw callout 2 secures the control panel casing and the second screw callout 3 secures the internal bracket Be sure to hold the assembly together as you remove it Rotate the control panel assembly toward the front of the printer to release the tab callout 4 4 Remove the control panel assembly g nd P aQ e j Figure 32 Removing the control panel 88 Chapter 5 Removal and replacement EN Figure 33 EN Front cover assembly The front cover assembly is composed of three pieces e front cover the frame that surrounds the main input tray e toner cartridge door e front guide assembly the internal shelf that attaches the front cover and the toner cartridge door to the printer Front cover 1 Remove the left side back right side and top covers see pages 80 through 87 Close the toner cartridge door Loosen two screws one shown callout 1 one on
112. photosensitive drum located in the toner cartridge must rotate for the print process to work The photosensitive drum receives its drive from the main drive assembly Note This test is especially important if refilled toner cartridges have been used 1 Open the printer door Remove the toner cartridge Mark the drive gear on the cartridge with a felt tipped marker Note the position of the mark 4 Install the toner cartridge and close the printer door The start up sequence should rotate the drum enough to move the mark 5 Open the printer and inspect the gear that was marked in step 3 Verify that the mark moved If the mark did not move inspect the main drive assembly to make sure that it is meshing with the toner cartridge gears If the drive gears appear functional and the drum does not move replace the toner cartridge EN Functional checks 151 Heating element check Paper passes between the heating element and a soft pressure roller to fuse toner to the paper 1 Unplug the printer for at least ten minutes 2 Verify that the thermistor connector is seated into both the printer chassis and the ECU 3 Remove the heating element connector callout 1 from the ECU To measure the continuity of the heating element measure the resistance between the two pins at the end of the cable Note Normal resistance is 25 ohms 10 ohms for the 110V printer and 80 ohms 20 ohms for the 220V printer If no resistance is measur
113. printer cannot print to the edge of the paper The printer has minimum margins on each edge of 4 23 mm 0 167 inches The reduction setting is set incorrectly 138 Chapter 6 Troubleshooting Solution Make sure that the printer is plugged into a live wall outlet or power strip Check that the parallel cable between the printer and the computer is securely connected Remove the toner cartridge remove the tape and return the toner cartridge See Toner cartridge on page 78 Replace the toner cartridge See Toner cartridge on page 78 Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family To get the image to fit into this printable area slightly reduce the size of the image Check the reduction setting in the Print or Setup window from within the program you are using EN Table 17 Solving print image quality problems continued Problem Toner specks appear on the printed page AaBoGe AgBOCC AaBbCc AaBbGc ABCC Characters are only partially printed also referred to as dropouts Vertical lines appear on the printed page EN AaBbC ce AabbCce AaBDCC AaBboCc AaBbC ce Cause The media you are using does not meet HP s specifications for example it is too moist or too rough The printer needs to be cleaned A single sheet of paper is defective The prin
114. r lever back into place 100 Chapter 5 Removal and replacement EN Fuser assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Remove two screws callout 1 from the right fuser plate Remove a third screw callout 2 from behind the large gear on the right fuser plate Note You can access the third screw through the holes in the 69T gear If you need to realign the 69T gear you must first remove the pressure roller gear Release the tab callout 3 and remove the pressure roller gear from the printer 4 Remove the bracket Figure 45 Removing the fuser assembly 1 of 4 EN Internal assemblies 101 5 Remove three screws callout 1 from the left fuser plate 6 Remove the bracket Figure 46 Removing the fuser assembly 2 of 4 102 Chapter 5 Removal and replacement EN 7 Remove two screws callout 1 one from each side of the printer Figure 47 Removing the fuser assembly 3 of 4 EN Internal assemblies 103 8 Unplug the fuser cable connector callout 1 by pressing and releasing the tab on the back of the connector 9 Unplug five smaller cable connectors callout 2 from the ECU and unwind the cables from the fuser assembly 10 Unplug the spade connector callout 3 11 Remove one screw callout 4 from the paper delivery sensor and lift the paper delivery sensor out of the printer 12 Lift the fuser assembly gently out of the printer Figure 48 Rem
115. rinter can handle a broader range of media sizes and types than the printer itself can The following are the supported media sizes e Minimum 45 by 89 mm 1 7 by 3 5 inches e Maximum 216 by 356 mm 8 5 by 14 inches In addition you can scan and copy many different types of media that are typically not used for printing such as newsprint photographs business receipts and business cards Note You must use a carrier sheet to feed small or delicate originals such as newsprint through the copier scanner without causing a jam To make a carrier sheet use a piece of paper and a transparency tape the leading edges together and load your original between the sheets Note You must feed business cards and any media that is smaller than 76 2 by 27 mm 3 by 5 inches through the straight through output path You can also tape them to the leading edge of a carrier sheet and feed them to the straight through output bin Perform the following actions to minimize the possibility of jams e Remove self stick notes e Remove staples and paper clips e Straighten any curls or wrinkles in documents before putting them into the document feeder tray e Do not insert any document with glue correction fluid or wet ink on it e Do not insert gum backed paper or labels e Place documents with tears perforations or punch holes ina carrier sheet which you can buy or make See the user guide e Avoid multiple copy forms e Do not scan
116. rrect the error Control panel is not functional 1 Verify that the control panel cable is seated in the formatter 2 If the cable is connected correctly replace the control panel 3 Do engine tests and self test pages print Print an engine test See page 149 The engine test should print without paper feed problems or print quality problems Note Engine test is not successful The formatter must be connected to perform an engine test Replace the ECU Control panel displays an Consult the list of control panel light error light pattern patterns in this chapter to identify and correct the error Media does not move Isolate printer paper path problems by smoothly through the performing a paper path check which is printer paper path discussed later in this chapter Poor print quality See Solving image quality problems on page 138 130 Chapter 6 Troubleshooting EN Table 13 Basic troubleshooting continued Verification steps Is the software installed correctly Possible problems Software is not installed or an error occurred during software installation Solutions Uninstall and then reload the product software Make sure you use the correct installation procedure and the correct port setting Does the product print from the computer Connect the parallel cable or USB cable to the product and the computer Use a word processi
117. rror see chapter 6 Troubleshooting Accessory error Remove the DIMMs and reseat See Y O All lights are blinking the user guide for instructions Us If the printer still has an error replace Wk the DIMMs EN Identifying printer components 31 Figure 9 Note Copier scanner control panel The control panel on the optional copier scanner has two buttons COPY and SCAN COPY button and light clear SCAN button and light clear Copier scanner control panel e Copy To perform Quick Copies even if your computer is turned off press the COPY button e Scan To launch HP LaserJet Director press the SCAN button If HP LaserJet Director is configured correctly you can perform the following tasks e Scan documents to e mail e Store documents electronically e Edit text with Optical Character Recognition OCR e Make multiple customized and color copies To cancel a scan or copy job from the control panel simultaneously press both buttons 32 Chapter 2 Installation and operation EN Selecting media Note EN Selecting media to print You can use paper with up to 100 percent recycled fiber content if it meets specifications To order HP paper or the Print Media Guide for the HP LaserJet printer family see the user guide Highly textured stock might not print evenly Very glossy paper might jam or repel toner Multipart forms can wrinkle or get jammed in the printer And paper in poor cond
118. rtridge information 25 26 Chapter 1 Product information EN Installation and operation Chapter contents Operating environment cee eee eee 28 Identifying printer components 000 0 ee eee 29 Printer control panel 29 Control panel light patterns 30 Copier scanner control panel 32 Selecting Media 6 eee 33 Selecting media to print 00000 6 33 Selecting media to copy or scan 34 Loading Media 1 1 ce eee 35 Loading media to print 0 0 00 e eee 35 Loading media to copy or scan 36 Printer output paths 0 0 00 eee eee 37 EN Chapter contents 27 Operating environment Place the printer on a sturdy level surface in a well ventilated area that meets the following environmental requirements e temperature 10 to 32 5 C 50 to 90 5 F e humidity 20 to 80 relative humidity no condensation e away from direct sunlight open flames and ammonia fumes e sufficient soace around the printer to allow for proper access and ventilation 253 mm 10 0 inches 643 mm 25 3 inches Figure 5 Dimensions of printer 416 mm 16 4 inches 643 mm 25 3 inches Figure 6 Dimensions of printer with optional copier scanner 28 Chapter 2 Installation and operation EN Identifying printer components Printer control panel The printer contro
119. s To perform NVRAM initialization 1 Turn the printer off Press and hold down the Go button Turn the printer on and continue to hold the Go button for at least 20 seconds During this process the Go button Attention and Ready LEDs will each turn on 4 Release the Go button The printer LEDs will begin cycling The NVRAM unit process will run until the printer is in the ready state PJL software commands To set the following NVRAM variables Factory printer DEFAULT PAPER and copier scanner factory default paper size will be set to the same value automatically Factory printer DEFAULT LPARM PCL SYMSET Factory DEFAULT OEM bit Factory DEFAULT PRINTPAGECOUNT Factory DEFAULT SCANPAGECOUNT Factory DEFAULT COPYPAGECOUNT Default Quick Copy paper size is also stored in scanner NVRAM but is changed only through the software or when set back to factory default with a NVRAMINIT Only Quick Copy image type and contrast have a default value stored in NVRAM they can only be changed through the software or by NVRAMINIT which returns them to a ROM default value 156 Chapter 6 Troubleshooting EN The table below provides a more detailed description of the NVRAM PJL factory variables and commands and shows possible settings for each Table 21 NVRAM PJL factory variables NVRAM PJL variable or command Possible settings DEFAULT PAPER LETTER LEGAL A4 EXECUTIVE COM10 MONARCH DL C5 B5 CUSTOM JISB5 ISOB5 JPOST JPOSTT
120. s callout 2 from the zero insertion force ZIF connectors on the formatter 4 Unplug the laser scanner cable callout 3 and the control panel cable callout 4 from the formatter Removing the formatter 1 of 2 Internal assemblies 97 Remove five screws callout 1 Rotate the formatter up and off of the hooks on the chassis and remove it from the printer 7 Disconnect and remove the formatter shield Figure 42 Removing the formatter 2 of 2 To reinstall When you reconnect the cable make sure you lock the ZIF connectors back into place 98 Chapter 5 Removal and replacement EN Laser scanner assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Disconnect the flat flexible cable from its socket callout 1 on the laser scanner 3 Disconnect the cable connector callout 2 from the formatter w a y Pag ete Ty sii bag uli ico Figure 43 Removing the laser scanner 1 of 2 EN Internal assemblies 99 4 Release the two tabs callout 1 one on each side of the shutter lever and lift the shutter lever straight up to remove it Note Make sure you do not misplace the small spring that is under the shutter lever 5 Remove four screws callout 2 and then lift the assembly off of the printer G 4 Figure 44 Removing the laser scanner 2 of 2 To reinstall Insert the spring into the hole on the laser scanner before you snap the shutte
121. sembly see page 112 Remove the ECU pan see page 120 Unwind the fan and solenoid cables from the cable guides callout 1 on the paper feed mechanism Remove two screws callout 2 from the paper feed mechanism Remove one screw callout 3 from the paper sensor PCB assembly Removing the paper feed assembly 1 of 4 124 Chapter 5 Removal and replacement EN 7 Separate two bushings on the bottom of the paper feed mechanism from the paper feed roller shaft callout 1 and lift the paper feed mechanism up and out of the printer Figure 69 Removing the paper feed assembly 2 of 4 To reinstall Insert the bottom of the sensor flag into the hole callout 2 in front of the paper feed roller shaft See page 127 for more reinstallation notes EN Bottom assemblies 125 8 Use needle nose pliers to push the two tabs away from the end of the paper feed roller shaft Note You might find it easier to first remove the right plate assembly see page 112 Do not remove the gear shield because the gears and springs can easily separate and become misplaced 9 Pull the paper feed roller shaft toward the left side of the printer and remove it Figure 70 Removing the paper feed mechanism 3 of 4 126 Chapter 5 Removal and replacement EN EN To reinstall Insert the two tabs callout 1 on the paper feed assembly into the two recesses on the printer Insert the bottom of the sensor flag into the
122. shape this can effectively decrease multifeeds Also try turning the paper around to feed the opposite end first or use a different type of paper Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Do not allow more than 125 sheets of 20 lb 75 g m bond weight paper less for heavier paper to fill the paper output bin Clean the pickup roller See Cleaning the printer pickup roller on page 49 Replace the pickup roller See Replacing the printer pickup roller on page 41 Clean the separation pad See Cleaning the printer separation pad on page 50 Replace the separation pad See Replacing the printer separation pad on page 43 Check the sensors to make sure that none of them are jammed If a sensor cannot be unjammed replace the sensor Solving paper feed problems 147 Solving copying and scanning paper feed problems Table 20 Solving copying and scanning paper feed problems Problem Long pages stop feeding through the copier scanner Scanned items are crooked The copier scanner feeds multiple sheets or jams frequently from the media input tray Cause The document is too long The paper delivery sensor is damaged The media input tray guides are not set correctly are broken or are missing The media input tray guides are not adjusted properly The media input tray is ov
123. t rubber paper pickup assembly RAO 1003 000CN 2 93 Foot rubber plate assemblies RA0 1197 000CN 902 90 Formatter C7857 60001 14 89 Formatter screws C515 2672 16 89 Formatter shield C7044 00001 15 89 188 Chapter 7 Parts and diagrams EN Table 34 Alphabetical parts list continued Description Part number Ref Figure Front guide assembly RG0 1022 000CN 1 90 Fuser assembly 110V RG0 1008 000CN 94 Fuser assembly 220V RG0 1026 000CN 94 Fuser plate left RAO 1185 000CN T 90 Fuser plate right RAO 1186 000CN 8 90 Gear 17T RA0 1172 000CN 9 89 Gear 17T fuser assembly RAO 1089 000CN 6 94 Gear 29T RA0 1088 000CN 5 94 Gear 69T RA0 1176 000CN 10 90 Grounding plate RA0 1072 000CN 10 92 HP jewel 7121 8042 8 88 Laser scanner assembly RG9 1486 000CN 4 89 Left plate assembly RG0 1002 000CN 11 89 Lever RA0 1174 000CN 5 90 Lever holder RA0 1173 000CN 4 90 Motor RH7 1473 000CN 13 90 Optional copier scanner R37 5020 000CN 3 87 Paper lift plate assembly RG0 1006 000CN 22 93 Paper pickup assembly RG0 1003 000CN 92 Paper pickup cover assembly RG0 1014 000CN 2 87 Paper pickup shaft assembly RG0 1007 000CN 23 92 Paper sensor PCB assembly RG0 1072 000CN 25A 92 PCB spacer RA0 1128 000CN 91 Pickup gear assembly RG0 1020 000CN 89 Pickup roller RF0 1008 000CN 89 Printer pickup tray assembly RG0 1013 000CN 87 Right plate assembly RG0 1001 000CN 12 90 S
124. t setting s from the toolbox on the HP LaserJet Director or HP Document Manager If the original was on a colored paper including brown recycled paper the text might not be clear Adjust the resolution contrast and brightness settings from the toolbox on the HP LaserJet Director or HP Document Manager Clean the printer See Cleaning the print path on page 47 Clean the copier scanner assembly See Cleaning the scanner path on page 51 1 Use the defect ruler to identify the spacing Check the appropriate component and replace if necessary See Repetitive image defect ruler on page 161 2 Replace the toner cartridge if it is damaged and maintenance procedures do not improve print quality Clean the scanner path See Cleaning the scanner path on page 51 Replace the copier scanner assembly EN Table 18 Solving copying and scanning image quality problems continued Problem Scanned text is not clear Images are scanning ata reduced size AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc Large amounts of toner are scattered around the characters EN Cause The contrast resolution or brightness needs to be adjusted before scanning The original is on colored paper There is a problem in the contact image sensor The HP software settings are set to reduce the scanned image The media is resisting the toner Solution 1 Adjust the con
125. t density needs to be adjusted The moisture content of the paper is inconsistent or the paper has moist or wet spots on the surface The paper was damaged by inconsistent manufacturing processes A draft mode or economy mode is selected in the software The toner cartridge is defective The priority input tray is not in place The photosenstive drum inside the toner cartridge is scratched The fuser is damaged or has an obstruction Solution Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Clean the printer See Cleaning the print path on page 47 Try reprinting the job Adjust the print density from the device configuration utility Make sure that the media meets HP s specifications Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Try the normal or best setting Replace the toner cartridge Adjust the priority input tray Replace the toner cartridge Replace the fuser Errors 139 Table 17 Solving print image quality problems continued Problem The printed page has a gray background AaBbCce AaBbCce AaBbCce AaBbCce AaBbCce Toner smears appear on the printed page AaBbCc AaBb Cc AaBbCc AaBbCc AaBbCc The toner is loose and it does not stay attached to the printed page AaBe ec Cause
126. t numbers 169 slots 14 troubleshooting 134 Director HP LaserJet 32 131 document feeder optional copier scanner capacity 14 feeding problems troubleshooting 148 documentation ordering 168 doors copier scanner 22 toner cartridge 20 91 DOS commands PJL 158 dots per inch maximum 14 dots troubleshooting printed pages 139 142 scanned images 144 dpi maximum 14 draft mode 56 DRAM formatter 55 drive roller observing 155 drivers ordering 168 dropouts troubleshooting 139 141 drum inspecting 137 operations 64 65 66 rotation functional check 151 troubleshooting 139 drum cleaning stage image formation process 66 duty cycle 14 dynamic random access memory DRAM formatter 55 E EconoMode 56 ECP Extended Capabilities Port interface 55 EN ECU cables 122 electrical components 181 errors 135 functions 59 jam detection operations 69 laser scanner operations 61 loads 60 paper feeding operations 67 power system 62 removing 79 120 troubleshooting 130 edges not printing 138 143 electrical components diagrams and part numbers 180 electrical specifications 17 electrophotographic processes operations 64 65 testing 150 electrostatic discharge ESD precautions for 77 element heating check 152 operations 66 engine control unit See ECU engine test performing 149 troubleshooting 130 Enhanced I O 56 envelopes loading 35 selecting 33 environmental specifications 16 28 error light See Attention light error
127. t the fan assembly off of the printer Figure 55 Removing the fan 2 of 2 To reinstall It might be easier to remove the ECU pan see page 120 before rerouting the cables through the hole callout 2 in the right side plate EN Internal assemblies 111 Right plate assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Remove the front cover toner cartridge door and front guide assembly see pages 89 through 95 Remove the solenoid see page 108 Remove the fan assembly see page 110 Press the small white tab to release the clutch callout 1 and slide the clutch to the left toward the pickup roller Note Make sure that the two halves of the clutch stay together If they separate you might lose the clutch spring Figure 56 Removing the right plate assembly 1 of 2 112 Chapter 5 Removal and replacement EN Figure 57 EN 6 Remove seven screws callout 1 If you have not already removed the fuser remove the fuser screw callout 2 7 Lift the right plate assembly off of the printer Removing the right plate assembly 2 of 2 Internal assemblies 113 Pickup assembly 1 Remove the left side back right side and top covers see pages 80 through 87 2 Remove the front cover toner cartridge door and front guide assembly see pages 89 through 95 Remove the right plate assembly see page 112 Remove one screw callout 1 Figure 58 R
128. tered around the characters Cause The environment is too warm or too humid The media was in the input tray too long The standard paper path is not working correctly The fuser temperature is too high The media is resisting the toner 142 Chapter 6 Troubleshooting Solution 1 Both high temperatures and high humidity levels cause media to curl Move the printer to a different environment 2 Use a different media Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family Turn the stack of media over and put it back in the tray Rotate the media 180 and put it back in the tray Open the straight through output door on the back of the printer and use this paper path Select Optimize for in the Paper tab of the printer driver Make sure that it is set for the appropriate media 1 Use a different media Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family 2 Turn the stack of media over and put it back in the tray 3 Use media that is designed for laser printers EN Solving copying and scanning image quality problems Table 18 Solving copying and scanning image quality problems Problem Pages do not print Parts of the page around the edges are not printing VaABbCc AaBbCc AaBoCc Vertical white stripes appear AaBbCc AaBbC
129. the affected assembly Always remove the toner cartridge before removing or replacing parts See Toner cartridge on page 78 Required tools e 2 Phillips head screwdriver with magnetic tip e Small flatolade screwdriver e Needle nose pliers e ESD mat e Penlight A PoziDriv screwdriver will damage screw heads on the printer Use a 2 Phillips head screwdriver Removal and replacement strategy 77 Before performing service Remove all media from the printer Unplug the power cable Place the printer on an ESD mat Remove the main input tray If the optional copier scanner is attached remove the copier scanner media input tray and the copier scanner output bin Remove the toner cartridge see page 78 Toner cartridge Note You will feel resistance when you open the toner cartridge door 1 2 Open the toner cartridge door which lifts the toner cartridge toward you Remove the toner cartridge CAUTION To prevent damage do not expose the toner cartridge to light Cover it with a piece of paper Figure 23 Removing the toner cartridge 78 Chapter 5 Removal and replacement EN Parts removal order Use the following diagram to determine which parts must be removed before removing other parts Pickup roller Separation pad Transfer roller Left side cover Optional copier scanner Back cover Right side cover Top cover Formatter ECU Solenoid Fan KANE Control panel Front cover ass
130. tion the 24 Vdc and 3 3 Vdc power circuitry contains an overcurrent protection circuit that automatically shuts off the output voltage when an overcurrent condition occurs as a result of a short or an abnormal voltage on the load side 62 Chapter 4 Operational overview EN Figure 17 EN High voltage power distribution The high voltage power supply applies an overlap of DC and AC voltage to the primary charging roller and the developing roller This circuit also applies a positive or negative DC voltage to the transfer roller according to the instructions from the engine control unit This circuit also controls the image density by changing the primary AC voltage and the developing AC bias according to the print density setting High voltage is disabled when the printer door is open High voltage power supply circuit Primary charging bias circuit 30 PRACC IC301 DC voltage p generation circuit PRDCC 31 CRGSNS FB Developing cylinder Combined AC voltage generation circuit 43 DVACC 32 TRPWM 37 TRNFOT Negative voltage 36 generation circuit TRCRNT Developing bias circuit DC voltage generation circuit Combined AC voltage generation circuit Transfer charging bias circuit Positive voltage generation circuit J305 Primary charging roller Fixing film unit sensitive 4 Transfer c
131. tion performance standard 21 CFA chapter 1 sub chapter J Complies wilh Canadian EMC Class B requirements SITEVAZ gt PET lt Tasted To Comply With FCC Standards FOR HOME OR OFFICE USE This pie conlorms with COAH radiation performance slandard 21 CFA chapter 1 sub chapler J Complies with Canadian EMC Clase E requiremenles Conforme la paces nf AO IMEE nes d compli alatromanaitigued lt lt CEM SITEVA2 gt PET lt Tasted To Comply Wilh FCC Standards FOR HOME OR OFFICE USE This produet conlorms with CORH radialion perlormance standard 21 CFA chapler T sub chaplard Complies with Canadian EMC Class requirements SITE MTI gt PET lt Overview of printer Front and side view Figure 2 Front and side view Printer control panel Long media extension output bin Toner cartridge door Priority input tray Side media guides for the main input tray Media support for the main input tray Main input tray O N O 0A A QO N Side media guides for the priority input tray 20 Chapter 1 Product information EN Back and side view Figure 3 Back and side view 9 10 11 12 13 14 15 16 EN Fuser pressure release levers Connection to optional copier scanner Left side cover Parallel port USB port Power receptacle Power switch 220 240 volt printers Straight through output door Overview of printer 21 Overview of optional copier scanner To
132. trast and resolution settings from the HP LaserJet Copier 2 Adjust the Quick Copy settings 3 Check that the contrast and resolution settings are correct See the user guide section for more information If the original is on colored paper including brown recycled paper the text might not be clear Try adjusting the resolution contrast and brightness settings from the toolbox on the HP LaserJet Director or HP Document Manager Replace the copier scanner assembly 1 Adjust the settings in the HP LaserJet Director or HP Document Manager 2 Adjust the Quick Copy settings 3 Adjust the settings in the HP LaserJet Copier software 1 Use a different media type Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family 2 Turn the stack of media over and put it back in the tray 3 Use media that is designed for laser printers Errors 145 Solving paper feed problems Table 19 Solving print paper feed problems Use the following tables to solve problems related to moving paper or documents through the printer If the problem occurs when copying or scanning and if the printer has the optional copier scanner assembly attached see table 20 Solving copying and scanning paper feed problems on page 148 Otherwise see table 19 Solving print paper feed problems on page 146 Solving print paper feed problems Problem Pages are com
133. tridge might print fewer pages if heavy or bold print is used For best results always use a toner cartridge before the expiration date stamped on the toner cartridge box Refilled toner cartridges While Hewlett Packard does not prohibit the use of refilled toner cartridges during the warranty period or while the printer is under a maintenance contract it is not recommended for the following reasons e Repairs resulting from the use of refilled toner cartridges are not covered under Hewlett Packard warranty or maintenance contracts e Hewlett Packard has no control or process to ensure that a refilled toner cartridge functions at the high level of reliability of a new HP LaserJet toner cartridge Hewlett Packard also cannot predict the long term reliability effect on the printer from using different toner formulations found in refilled cartridges e The print quality of HP LaserJet toner cartridges influences the customer s perception of the printer Hewlett Packard has no control over the actual print quality of a refilled toner cartridge Recycling toner cartridges In order to reduce waste Hewlett Packard offers a recycling program Cartridge components that do not wear out are recycled Plastics and other materials are recycled Hewlett Packard pays the shipping costs from the user to the recycling plant within the United States To join this recycling effort follow the instructions inside the toner cartridge box Toner ca
134. ure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 EN Model and serial number labels 00 0000 eee eee 19 FIONLANO SING VIEW 2 2 52 oi2 ues oes webpage lt be KNA LAGA ee aes 20 Back and side VIOW 1 ee eee 21 OD VICW rers kawad SoBe Olek Se Beene wanes 22 Dimensions of printer 6 1 eee 28 Dimensions of printer with optional copier scanner 28 Printer control panel naana aaa a 29 LIGNUStatuS legend maaga RANA DAA eed Mette kena LANGAN A 30 Copier scanner control panel cece eee 32 Scanning a business card 2 20 a maha Na ka Dh NANG e868 Ra 36 Bi DIN rai iere aA E AA PA 37 Straight through output door n a oaa aana aaa ee 37 Basic configuration aaah kh cresensa sasani aa ded Kg ila ka a 54 Printer unit functional block diagram n nananana aana aana 58 UNO AA S 60 Overview of laser scanner operation 61 High voltage power supply circuit 2 0 00 eee eee 63 Image formation block diagram 0 0 cee ee 64 Panter OA Mies igo KG Aka woe ANA AL GLAND ATAS Rak eee NG a Remind 68 Solenoid photosensors and switches 70 Copier scanner path a 72 General timing diagram 4a ka EDEN DELAS ANEK KAEN DAGA 74 Removing the toner cartridge 4 ce eee 78 Removing the left side co
135. ver 0 0 0 0 cece ee 80 Removing the optional copier scanner 81 Removing the back cover 1 of 2 nananana anaana naaa eee 82 Removing the back cover 2 of 2 nananana nananana ee 83 Removing the right side cover 1 0f3 84 Removing the right side cover 2 0f3 85 Removing the right side cover 3 0f3 86 Removing the top Cover ee eee 87 Removing the control panel 2 2 0 0 0 eee 88 Removing the front cover 1 Of 2 0 0 cc ee eee 89 Removing the front cover 2 Of 2 2 0 0 cece eee 90 Removing the toner cartridge door 1 0f2 91 Removing the toner cartridge door 2 0f2 92 Removing the front guide assembly 1 0f3 93 Removing the front guide assembly 2 0f3 94 Removing the front guide assembly 3 0f3 95 Removing the transfer roller 0 0 00 cece eee eee 96 Removing the formatter 1 0f2 ee eee 97 Figures 7 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 Figure 49 Figure 50 Figure 51 Figure 52 Figure 53 Figure 54 Figure 55 Figure 56 Figure 57 Figure 58 Figure 59 Figure 60 Figure 61 Figure 62 Figure 63 Figure 64 Figure 65 Figure 66 Figure 67 Figure 68 Figure 69 Figure 70 Figure 71 Figure 72 Figure 73
136. ws printer memory to be used for storing data received from the host computer When Enhanced O is enabled you can send more data to the printer in shorter amounts of time which allows you to return to your application sooner Enhanced I O has the following options e Auto allows the printer to use Enhanced I O memory allocation to increase the speed of data transfer from the host computer to the printer if necessary The default setting is Auto e Off uses the minimum amount of printer memory for storing data sent from the host computer e Page Protect allows the formatter to create the entire page image in page buffer memory before physically moving the media through the printer This process ensures that the entire page will be printed The default setting is Auto Page complexity ruling lines complex graphics or dense text can exceed the printer s ability to create the page image fast enough to keep pace with the image formation process If Page Protect is disabled and a page is too complex the page might print in parts for example the top half on one page and the bottom half on the next page Some print data loss is likely in these instances and the printer will display an error message 56 Chapter 4 Operational overview EN EN PJL overview Printer Job Language PJL is an integral part of configuration in addition to the standard Printer Command Language PCL With standard ECP cabling PJL allows the print
137. y clean them using isopropyl alcohol only If they are damaged replace the high voltage connector assembly N a High voltage connector assembly left side 154 Chapter 6 Troubleshooting EN Figure 79 EN Paper path check If paper is not being picked up or is not moving through the paper path you might want to observe all of the paper motion activities Overriding the door interlock SW301 allows you to observe motor rotation solenoid action kick plate motion paper pickup roller motion drive roller transfer roller fuser roller and gear and delivery roller motion To override 5W301 aur Overriding SW301 1 2 3 Remove the left side cover See Left side cover on page 80 Install the toner cartridge which will press SW301 Press the laser scanner interlock switch callout 1 on the laser scanner While SW301 and the laser scanner interlock are engaged perform an engine test or self test to observe paper motion See procedures elsewhere in this chapter Functional checks 155 Service mode functions NVRAM initialization cold reset NVRAM initializer sets all default variables stored in NVRAM back to factory default values or to a default ROM value depending on the variable It also performs a system reset NVRAM initializer resets the following e all menu settings to factory default values e factory settings such as formatter number page counts factory paper setting

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