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HP LaserJet 6L User's Manual

1. Service and Error Messages Service errors prevent further printer operation until some action is taken When there is a service error all of the lights will turn on in a steady state Press and hold the Front Panel Button to see a pattern in the lights The error will only be displayed as long as this button is pressed Use Table 7 4 Service and Error Messages to identify what type of service error has occurred Service and Error Messages 1 of 3 ROM RAM Error An error was found with the ROM or RAM The printer believes that the ROM is corrupted or an error has been found in the RAM Fuser Error This indicates a fusing assembly malfunction Note Chronic fuser failures or fuser overheating or both are indicators of an uninterruptible power supply or battery backup being used with the printer Uninterruptible power supplies UPS should not be used with the printer 7 10 Troubleshooting 1 Power cycle the printer by unplugging the printer and plugging it back in If this doesn t clear the error 2 Unplug the printer remove any optional memory then power the printer back on If the message clears replace the memory card 3 Replace the Formatter PCA 1 Unplug the printer for 10 minutes or more 2 Verify that the fuser connector is firmly seated in J102 of the DC Controller PCA and that the thermistor connector left of fusing assembly is seated into both the printer chass
2. SERVICE NOTE CLASSIFICATION ACTION IMMEDIATELY STANDARDS CATEGORY W ON SPECIFIED FAILURE LABOR 0 5 Hours E AGREEABLE TIME LOCATION ll CUSTOMER INSTALLABLE SERVICE RETURN USED RETURN CATEGORY ON SITE INVENTORY SCRAP PARTS SCRAP HP LOCATION SEETEXT SEE TEXT AVAILABILITY PRODUCT S SUPPORT LIFE RESPONSIBLE UNTIL February 1998 AUTHOR SKL ENTITY 4600 ADDITIONAL INFORMATION Service Notes C 1 C 2 Service Notes To remove the paper jam the fuser area of the printer must be disassembled Fusers and pressure rollers should be checked for damage from the paper jam or the customers attempts to remove the paper jam The output tray fin should be installed in all LaserJet SL s in the affected serial number range that are returned for any service paper jam or other Solution The out try fin RB1 7332 000CN should be placed in the output tray of the printer This will decrease the number of fuser paper jams customers are experiencing The fin should be installed in all printers that do not already have it See graphic for placement of the part ADMINISTRATIVE INFORMATION Output Tray Fin Fuser Jam Clearing Countermeasure C3941A 02A SERVICE NOTE SUPERSEDES C3941A 02 HP C3941A LaserJet 5L Serial Numbers JPBK000000 JPBK016388 JPBL000000 JPBL055374 JPCW000000 JPCW043448 JPVW000000 JPVW081157 USCB000000 USCB302011 JPBV000000 JPBV010501 JPVV000000 JPVV216255 CNVMO0000
3. Processor Error Note the LED pattern and the BiTronics error code Contact HP technical support with this information as well as a description of what data was sent the errors encountered prior to the firmware error the condition of the printer prior to the error and any other information that may help isolate the error 7 12 Troubleshooting Note Image Formation Troubleshooting Check the Toner Cartridge Image formation defects are many times the result of toner cartridge problems If there is any doubt always replace the toner cartridge before troubleshooting image defects Use the following check list to ensure that the toner cartridge is still operable Ensure that the toner cartridge is seated properly in the cavity Inspect the toner cartridge for remaining toner Check the expiration date of the toner cartridge stamped on the cartridge box Check the toner cartridge to see if it has been disassembled or refilled The toner cartridge s full weight is 26 1 oz 730 grams and its empty weight is 22 7 oz 640 grams Inspect the cartridge for leaking toner through worn seals If the drum has been manually rotated it may have caused internal damage and toner spills may result Check the surface of the photosensitive drum in the cartridge to see if it has been damaged or scratched Touching the drum will contaminate the photosensitive surface and may cause spotting
4. E Dots Clean the static charge eliminator See Chapter 4 Printer Maintenance There may be discontinuities in the high voltage contact points Clean the high voltage contact points on the toner cartridge and transfer roller Replace the transfer roller Dirt on the Back of the Page Use the image defect ruler to determine if the rollers are dirty If so clean them Replace the rollers if they cannot be cleaned sufficiently Clean the heating element Blank Spots The paper may not meet HP s paper specifications Select different paper The moisture content of the paper may be inconsistent or the paper may have moist or wet spots on the surface Try paper from a fresh ream or a different paper manufacturer Bunoouse qnoJ L Replace the toner cartridge There may be discontinuities in the high voltage contact points Clean the high voltage contact points on the toner cartridge and transfer roller Replace the transfer roller Replace the DC Controller White Horizontal Line Replace the toner cartridge Faulty Registration Skewed Image Unload the paper and re stack it in the input bin Readjust the guides to the width of the paper Too many sheets of paper may have been loaded into the paper input slot Load no more than 100 sheets of paper The paper may not meet HP s paper specifications Select different paper Clean the Paper Pickup Roller If you cannot
5. Table 7 4 Service and Error Messages 1 of 3 Table 7 4 Service and Error Messages Continued 2 0f 3 Table 7 4 Service and Error Messages Continued 3 of 3 Table 7 5 High Voltage Power Supply Check Table 7 6 Paper Curl Troubleshooting Table 7 7 Cable Pinouts eee eee Table 7 8 Cable Pinouts 0 0 leer Table 8 1 Accessories and Supplies o Table 8 2 Common Fasteners Used in the Printer Table 8 3 Covers and Doors 2er Table 8 4 Internal Components 1 of 3 Table 8 5 Internal Components 2 of 3 Table 8 5 Internal Components 3 of 3 lable8 6 ECU Case s ko eer ea a Rem vm ee ee RS Table A 1 Alphabetical Parts List o o o Table A 2 Numerical Parts Index 5 17 5 19 7 8 7 9 7 9 7 10 7 11 7 12 7 24 7 26 7 30 7 31 vii viii Product Information Contents Printer Features 2 52 3 a a da 1 3 Paper Capacities and Sizes oo e e 1 3 Identification ee 1 4 Model and Serial ee 1 4 Specifications ese ra a a dd ic deus 1 6 Product Overview ers 1 7 Front Side Views of the Printer llle 1 7 Front Door Assemblies e e e 1 8 Back View of the Printer o o e e 1 9 Service Approach
6. Figure 7 2 SW201 PS201 3206 J201 304 J208 J209 ise J207 T O yao i i i SW101 J202 l FU101 FU102 O 4204 oe Formatter INL101 Q O kJ 110v 220v DC Controller DC Controller PCA Components J3 Control Panel Connector Formatter J202 Paper Registration and Paper Out PCA Photosensors PS203 and PS202 J102 Fusing Assembly J206 Fusing Assembly thermistor feedback J201 Formatter PCA Connection J207 Scanner Motor J204 Paper Pickup Solenoid SL1 J208 Laser Driver Beam Detect Circuitry J301 Developer Bias Contact J209 Door Open No Toner Cartridge Photosensor PS204 HP LaserJet 5L only J302 Transfer Roller Contact J401 Motor J304 Primary Roller Contact FU101 SW101 12A Vdc Shutoff Switch FU102 110 volt only SW201 Engine Test Print Switch INL101 Input Power Receptacle PS201 Fusing Assembly Exit Photosensor 7 6 Troubleshooting Note Dn RU r3 Printer Error Troubleshooting Information regarding printer status is conveyed by two methods 1 the printer s Control Panel lights and 2 feedback through the bi directional 1 O that displays at the PC The basic method of determining error messages uses patterns of lights on the Control Panel LED Printer messages are categorized into two basic types Status Messages Service and Error Messages Before troubleshooting the printer cycle the power to the printer to see if the error persists Priority of Errors Each error has a priority in relation to
7. e 1 10 Parts Exchange Program 2 2 0 00000 ee eee 1 10 Ordering Parts 25 ook we eae ee Re eee ee RC 1 10 Ordering Consumables a 1 10 Ordering Related Documentation e 1 10 Technical Assistance eA 1 12 Worldwide Support leen 1 13 North American Response Center ooo 1 13 Warranty AA II el a ote ae A 1 14 Warranty Exclusions ooa ee 1 14 Warranty Limitations 1 15 Voltage Conversions 1 2 ee 1 15 Product Information 1 1 1 2 Product Information Table 1 1 Table 1 2 Printer Features Printer Features E Description Print Speed 4 ppm HP LaserJet 5L 6 ppm HP LaserJet 6L Text amp Graphics Resolution 300 or 600 dpi Printer Language Enhanced PCL 5 Monthly Usage pages 4 000 pages HP LaserJet 5L 6 000 pages HP LaserJet 6L Memory Standard 1 Mbyte RAM 7Onsec Maximum Memory 9 Mbyte total available in increments of 1 2 4 and 8 Mbytes Capacity 5 V JEDIA card2 Internal Typefaces 26 Scalable Typefaces Standard Interfaces Parallel Bi tronics Power Control SleepMode Control Panel 3 LEDs 1 Front Panel Button 1 Printer memory is optimized with Memory Enhancement technology MEt 2 JEDIA Japanese Electronic Device Industry Association is a group of DRAM suppliers who have standardized DRAM and other CMOS products Paper Capacities and Sizes Paper Capacities and Sizes Features Deseriptions
8. Paper Input Bin Capacity Holds up to 100 sheets of regular weight paper or up to 10 envelopes Paper Output Bin Capacity Holds up to 100 sheets Single Sheet Input Bin Minimum Paper Size 3x5 in 76 mm x 127 mm Maximum Paper Size 8 5x14 in 216 mm x 356 mm Product Information 1 3 L uoneuuoju yonpold Identification Model and Serial The model number and serial numbers are listed on identification labels located on the bottom of the printer The model number is alphanumeric such as C3941A for the HP LaserJet 5L printer and C3990A for the HP LaserJet 6L printer The serial number contains information about the Country of Origin the Revision Level the Production Code and production number of the printer The labels also contain power rating and regulatory information Figure 1 1 100 120V 127V 50 60Hz 2 0A 60Hz 2 5A USTED Complies with Canadian EMC Class B requirements Conforme la classe B des normes canadiennes de compatibilit lectromagn tiques CEM LICENSED UNDER ONE OR MORE OF THE FOLLOWING U S PATENTS 4 120 583 4 435 732 4 686 622 4 896 260 4 121 284 4 471 385 4 739 396 4 942 516 4 371 923 4 532 182 4 825 364 4 396 976 4 672 457 4 829 419 This product conforms with CDRH radiation performance standard 21 CFR chapter 1 sub chapter J This device complies with Part 15 of the FCC Rules Operation FCCID B94C3941A HEWLETEPACKARD BOISE PRINTER DIVISION 11311 CHIN
9. 6 35 9 jueuue2ejdou pue jenow y To reinstall If the spring on the Kick Plate doesn t stay on the Kick Plate replace the spring making certain the diameter of the spring surrounds two lower pins on the Kick Plate and rests inside the third pin Use needlenose pliers to place the spring correctly See Figure 6 32 Figure 6 32 Kick Plate Spring Replacement While rotating the Kick Plate into place guide the other end of the spring onto the silver grounding plate located on the Paper Feed Frame 6 36 Removal and Replacement Figure 6 33 Separation Pad 1 Remove the Printer Covers Pickup Roller Assembly Figures 6 23 and 6 24 and Kick Plate Figure 6 31 2 Lift the bottom of the white plastic tab on the rear of the Paper Feed Frame up slightly and slide it up toward the top of the Paper Feed Frame This will release the Separation Pad Figure 6 33 3 Lift the Separation Pad 90 degrees and slide its mounting pins out of their retainers Separation Pad Removal Removal and Replacement 6 37 9 jueuujo2e dou pue enousy Subpads Note When you replace the Separation Pad you should also replace the smaller subpads at the same time 1 Place your index finger on the subpad 2 Press toward the top of the printer Figure 6 34 Subpad Removal 6 38 Removal and Replacement Figure 6 35 Feed Assembly The Feed Assembly is located in the Paper F
10. International France Belgium French Switzerland Germany German Austria 02 626 8806 020 606 8751 01 662 5525 0171 512 5202 44 171 512 5202 04 50 43 9853 02 626 8807 084 880 1111 0180 5 25 81 43 0660 6386 Date of purchase Description of the problem Norway Denmark Finland Sweden Italy Spain Portugal Norwegian Danish Finnish Swedish Italian Spanish Portuguese 22 11 6299 3929 4099 0203 47288 08 619 2170 02 26410350 902 321 123 01 441 7199 In Country Support Numbers Africa Middle East Argentina Australia Brazil Canada China Czech Republic Greece Hong Kong Hungary India Indonesia Japan Korea 41 22 780 7111 54 1 781 4059 69 03 9272 8000 55 11 709 1444 208 323 2551 8610 6261 4174 6261 4175 6261 4176 6262 5666 42 2 471 7321 30 1 689 64 11 800 7729 36 1 252 4505 011 6472366 21 350 3408 31 20 581 3318 82 2 3270 0700 outside Seoul call 080 999 0700 Malaysia Mexico D F Mexico Guadalajara Mexico Monterey New Zealand Philippines Poland Portugal Russia Singapore Switzerla nd Taiwan Thailand Turkey North American Response Center 603 295 2566 52 5 326 4600 52 3 669 95 00 52 83 378 42 40 64 9 356 6640 63 2 894 1451 48 22 37 5065 351 1 301 7330 7 095 923 5001 65 272 5300 41 1 753 7111 02 717 9609 662 661 4011 661 4012 90 1 224 5925 The North American Response Center NARC is
11. These printers do not use high voltage corona wires in the electrophotographic process and therefore generate no measurable ozone gas O3 The printers instead use charging rollers in the toner cartridge and in the print engine Regulatory Information B 3 uoneunoju A101e nDaH Note Figure B 1 FCC Statement Class B Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Any changes or modifications not expressly approved by
12. 7 If the Auto Continue variable is off within PUL you need to press the Front Panel Button to continue printing Incompatible Memory Card Remove the incompatible memory card and replace it with a 1 2 4 or 8 Mb 70 nsec or faster memory card See Chapter 8 for memory card part numbers Manual Feed The printer is waiting for you 1 Make sure the correct paper is loaded into the to add a piece of paper to the single sheet printer See your HP LaserJet 5L User s Manual or the input slot HP LaserJet Printer Family Paper Specifications Guide for more information 2 Press and release the Front Panel Button 3 Turn off manual feed within your software application if you do not wish the printer to pause between sheets 7 8 Troubleshooting Table 7 2 Printer Status Messages Continued 2 of 2 Note Table 7 3 Sleep Mode If the printers LEDs remain off h 1 The printer is in Sleep Mode Press the Front Panel Button or open the EP Door 2 Power is not supplied to the printer Check power O cord connections and the power source 3 Print an engine test to determine if the print engine is functional If the test is successful replace the Formatter PCA 4 See the General Troubleshooting Flowchart earlier in this chapter Occasionally you may add paper close the
13. Canada This support tool offers a comprehensive online information system designed to provide technical and product information on HP products To subscribe to this quarterly service in the U S or Canada call 800 457 1762 Fulfill Plus 65 740 4477 Singapore Malaysia Indonesia Hong Kong To locate HP authorized dealers call 800 243 9816 U S 800 387 3867 Canada Call 800 446 0522 U S 800 268 1221 Canada HP FIRST HP FIRST Fax will deliver detailed troubleshooting information on common software applications and troubleshooting tips for your HP product Call from any touch tone phone and request up to three documents per call These documents will be sent to the fax of your choice Australia Austria Belgium Dutch Belgium French Canada China Denmark English outside of UK Finland France Germany Hong Kong India Indonesia Italy Japan 1 12 Product Information 03 9272 2627 Korea 02 769 0543 0660 8128 Malaysia 03 298 2478 0800 1 1906 Netherlands 0800 22 2420 0800 1 7043 New Zealand 09 356 6642 800 333 1917 Norway 800 11319 86 10 6505 5280 Philippines 65 291 7951 800 10453 Singapore 65 275 7251 31 20 681 5792 Spain 900 993123 9800 13134 Sweden 020 795743 05 905900 Switzerland German 0800 55 1527 0130 810061 Switzerland French 0800 55 1526 852 2506 2422 Taiwan 02 719 5589 011 622 6420 Thailand 02 661 3511 21 352 2044 United Kingdom 0800 960271 1678 59020
14. Figure 6 41 8 Lift the bottom plate rotating the plate toward you from the back as if hinged on the front Release the Fusing Assembly connector J206 Figure 6 41 callout 1 ESD SENSITIVE DC Controller Removal 2 of 3 Removal and Replacement 6 45 9 juauls9e day pue enousy 9 Remove the 7 remaining connectors Figure 6 42 callout 1 10 Remove the screws 5 that secure the DC Controller to the metal case Figure 6 42 callout 2 Figure 6 42 DC Controller Removal 3 of 3 11 Remove the DC Controller by lifting gently on the side opposite the formatter then sliding it out Caution Be careful not to rotate the DC Controller as you remove it Note When ordering the DC Controller does not come with any connectors Use the current connectors or refer to the connector chart in Chapter 8 for ordering information 6 46 Removal and Replacement Formatter PCA Caution ESD SENSITIVE 1 Remove the Printer Covers and complete the DC Controller removal direction up to step 8 Figures 6 40 and 6 41 2 Remove the two cable clips Figure 6 43 callout 1 3 Remove all 4 screws from the formatter cover Figure 6 43 callout 2 Lift the I O shield to remove it Remove the Control Panel display cable Figure 6 43 callout 3 Slide the formatter away from the DC Controller PCA to remove it from the connector Un a Figure 6 43 Formatter Board Removal Note The formatter I O shield comes
15. exchange program 1 10 F faded print 7 14 faulty image examples 7 14 FCC statement B 4 features control panel 1 3 3 3 feed assembly 8 20 Finland laser statement B 2 fonts downloaded 5 6 internal 1 3 internal character sets 5 8 storing 5 8 fonts internal 1 3 form feed light 3 4 to 3 5 formatter PCA 8 16 Motorala 68030 microprocessor 5 8 Bi tronics interface 5 8 DC controller PCA 5 19 described 5 8 engine test print 3 10 HVPS PCA 5 7 REt 5 9 self test bypass 5 5 voltages 5 6 formatter PCA 5 8 formatter system described 5 8 front door components 8 10 8 12 Front Panel Button described 5 7 functional overview 5 1 to 5 22 functions basic printer 5 3 fusing process 5 14 H half page blank 7 17 half self test check purpose 7 22 half self test functional check 7 22 hardware common 8 6 high voltage power distribution 5 7 high voltage power supply PCA 5 7 high voltage power supply check 7 24 horizontal stripes 7 15 HPD HP s Distribution Center 1 11 I identification labels 1 4 identification printer 1 4 image defects 7 28 image developing 5 12 5 14 image formation system block diagram 5 12 DC controller 5 8 described 5 12 features 5 12 toner cartridge 5 13 7 13 image formation troubleshooting 7 13 image fusing 5 12 5 14 image transferring 5 12 5 14 image writing 5 12 to 5 13 installation DRAM 6 5 installing memory cards 6 5 interfaces xapul Index 1 Index standard 1 3 internal assembl
16. troubleshooting preliminary 7 3 two way communication PJL 5 11 typefaces internal 1 3 V VCCI Statement Japan B 4 vertical lines 7 15 vertical white stripes 7 15 voltage conversions 1 15 W WAIT printer timing 5 19 xapul Index 3 warning messages 6 3 warranty exclusions 1 14 limitations 1 15 start date 1 15 voltage 1 15 warranty 1 14 wiring diagram 7 29 wiring diagrams main 7 29 writing process 5 13 Index 4 Us HEWLETT PACKARD Copyright 1997 Hewlett Packard Co Printed in USA 9 97 Manual Part No C3990 90991 C3990 90991 Printed on Recycled Paper
17. 1 Remove the Printer Covers Figures 6 2 6 3 and 6 4 2 For HP LaserJet 5LPrinter only Press the Door Open flag down Figure 7 7 callout 1 and lift the EP Cartridge flag Figure 7 7 callout 2 These flags are located on top of the printer chassis to the left of the Laser Scanner assembly For both HP LaserJet 5L and 6L Printers Press SW101 Figure 7 7 callout 3 be Overriding PS204 and SW101 3 While holding the flags up perform either an Engine Test or a Self Test to observe paper motion See procedures earlier in this chapter Troubleshooting 7 27 Bunoouse qnoJ L Repetitive Image Defect Ruler Figure 7 8 First occurence of print defect Developing Cylinder 32 mm 1 25 in Primary Charging Roller 38 mm 1 5 in Delivery Roller 44 mm 1 75 in Transfer Roller 48 mm 1 9 in Pressure Roller 64 mm 2 5 in gt Upper Heating Element Film 76 mm 3 0 in Toner Cartridge Photosensitive Drum 76 mm 3 0 in Repetitive Image Defect Ruler 7 28 Troubleshooting iagram D iring Main W 7 Troubleshooting Ajuo 19 peyreysu eBpurreo da Sed Jpesojo
18. 3 4 The Front Panel Button ee 3 6 Printing a Self Test Page o o e 3 7 Continuous Self Test o o e 3 9 Printing an Engine Test o e ee 3 10 Resetting the Printer o ss s o o e e 3 11 To Resetthe Printer i 4044 2 eee eh hee oe A 3 11 Operating Overview 3 1 3 2 Operating Overview C m Using the Control Panel Control Panel Layout The Control Panel consists of three status lights and a Front Panel Button located at the front of the printer The Control Panel consists of one button and three status lights ERROR Yellow DATA Green READY Green These lights can be in only one of the following states OFF ON Blinking Coo E DY Operating Overview 3 3 uoneanDiyuo5 pue uoinejeisu LED Lights The LED lights provide a quick way to check the printer s status Table 3 1 Indicator Lights 1 of 2 When this Indicator Looks like this On Blinking n Blinking 3 4 Operating Overview Ready Ready to print Print job in progress Form Feed There is unprinted data in the buffer Manual Feed The printer is in manual feed mode Error light continuously on Printer is out of paper Printer s EP
19. Assembly cracks Teflon sleeve Pressure Roller RF5 1516 000CN RF5 2362 000CN The estimated toner cartridge life is based on Letter or A4 size paper with an average of 5 toner coverage and a medium density setting Toner cartridge life can be extended further by conserving toner using the printer s EconoMode feature eoueuojuieyw U Printer Maintenance 4 3 Figure 4 1 Note Toner Cartridge Life The toner cartridge has been designed to simplify the replacement of the printer s major consumable parts The toner cartridge contains the printing mechanism and a supply of toner When using a typical word processing application a toner cartridge will print approximately 2500 pages where the text covers about 5 of the page EKKZ 5 COVERAGE KKKEEEKKEEEEZZZE EKZEEZZEEEKKEEEZ KKKEEEKKEEEEZZZE KKEEKKZZZZZEEEKK KKKKEEEEEEZZZZEE EKZEEZZEEEKKEEEZ KKKEEEKKEEEEZZZE KKEEKKZZZZZEEEKK KKKKEEEEEEZZZZEE EKZEEZZEEEKKEEEZ EKZEEEE EEEEZZ EEZZZZZ EEEEEZE EZZZKKK KEEEEE KZZZEE EEEEEZ ZZZKKKE KKE KKKEEEEEK ZZZEEE KKEKEEE 222 EEEKKKEE ZZKKEREE KKKKKEE EEEE FEKZZZK EEEEE ZEEEEZ EEEEEKKK ZZZZ EEEEEE ZKZKZKZZK ZZZZZL EEE KZKZKZK EKEKEKE KKK EECEEK ZZKZKZK EKEKEK EKEKEKE KKKKEEE KKZ ZZZZZKKKK EKKKKKZZZ EKEKEK KKKEEEEEK ZZZEEE KKEKEEE 222 EEEKKKEE ZZKKEEEE KKKKKEE EECE EEKZZZX EEEEE ZEEEEZ EEEEEKKK 2222 EEEEEE ZKZKZKZZK KKKKKKK 222222 EEE KZKZKZK EKEKEKE KKK EEEEEK ZZKZKZK EKEKEK EKEKEKEKE KKKKEEE KKZ ZZZZZKKKK EKKKKK222 EKEKEK E
20. Do not install on carpet or other soft surfaces Ensure adequate power is supplied Printer power requirements are listed under Specifications in Chapter 1 Uninterruptible power supplies UPS should not be used with this printer Install away from direct sunlight open flames or ammonia fumes If the printer is placed near a window make sure the window has a curtain or blind to block any direct sunlight Install with enough space around the printer for proper access and ventilation See Figu 213 Install printer away from the direct flow of exhaust from air ventilation systems Site Requirements 2 3 G s u w nb y S Figure 2 1 Table 2 2 Printer Space Requirements Legal A4 Letter T 311 2 mm 335 5 mm Printer Space Requirements E E e Ke ki 372 7 mm 227 5 mm Printer Dimensions seen een Height storage 8 9 in 227 5 mm operational 14 6 in 372 7 mm Weight with toner cartridge 15 9 Ibs 7 2 kg Toner cartridge weight 1 5 Ibs 7 kg With letter input assembly extended Some quantity of toner will reside in the waste toner area of a toner cartridge when the toner supply is exhausted Therefore using toner cartridge weight may be an unreliable indication of remaining toner supply 2 4 Site Requirements Caution Note The HP C3906A F Toner Cartridge Toner cartridges contain components that are sen
21. Hewlett Packard could void the user s authority to operate this equipment Use of a shielded interface cable is required to comply within the Class B limits in Part 15 of FCC rules VCCI Statement Japan The VCCI statement below is required in Japan It is similar to the FCC regulatory statement COE TRIS SEE ERX LO BR LIC O CHA SHASSARRE CHEEMRCORRMEMLE EN CL EBRABEE SERKBSAERHBAS VCCI RRICHALTHEDET LOL KABLI Jt FEY aVSeERiceeBlLCCHHICNSe S ERHORALHATEMHOET AU ik A SITE TIE LW RRORMWELTFAUW VCCI Statement Japan B 4 Regulatory Information Service Notes Fuser Accordian Jams C3941A 01 SERVICE NOTE SUPERSEDES NONE HP C3941A LaserJet 5L Serial Numbers lt JPBB022333 JPTB000101 lt JPBJ041310 JPBK006151 lt JPBL033831 JPTJ000101 JPTK000101 lt JPTLO00101 lt USBB158323 lt JPTM080500 lt JPBM007279 lt JPBT000101 JPBV000101 lt JPTT090666 lt JPTV 122612 lt JPTX029034 LaserJet 5L Printer Fuser Accordion Jams To Be Performed By HP Authorized personnel or Customer Parts required RB 1 7332 000CN output tray fin General Description Under some conditions the paper can be pushed back down into the fuser This re sults in a paper jam in the fuser area The paper jam can be so severe that the cus tomers cannot remove the paper and the printer requires servicing DATE 20 February 1996 ADMINISTRATIVE INFORMATION
22. If any fonts have been downloaded to the printer a second page will print To print a self test page 1 Make sure the Ready bottom Light is on and all other lights are off Wake up the printer if necessary by pressing the Front Panel Button 2 Briefly press and release the Front Panel Button The Data middle Light comes on the Ready bottom Light blinks Wait for a self test page to print 3 8 Operating Overview Note Y N A Un Continuous Self Test A continuous self test can be useful for troubleshooting paper path and other problems To print a continuous self test Disconnect the printer from the power source Press and hold down the Front Panel Button while connecting power Continue holding the button for about five seconds All lights will illuminate at once then each will light in sequence Release the button The printer conducts its internal diagnostics routine then prints the self test page continuously until stopped To stop the continuous self test and reset the printer press and hold the Front Panel Button for a few seconds until all lights begin lighting in sequence once again The self test does not print at the printer s rated speed of four pages per minute HP LaserJet 5L or six pages per minute HP LaserJet 6L The engine test prints at the printer s rated speed Operating Overview 3 9 uoneanBiyuo5 pue uoinejeisu Printing an Engine Test The engine test print can be used t
23. Information Center 800 752 0900 Refer to Related Documentation in Chapter 1 for documentation and training media product numbers Accessories and Supplies Product Number Description Toner Cartridge C3906A Replacement toner cartridge Memory upgrades 1 MByte C3939A You can upgrade to a total of 9 2 MByte C3938A MBytes of memory in the HP 4 MByte C3148A LaserJet 5L 6L Parallel cable IEEE 1284 C2950A 2 meter A to B C2951A 3 meter A to B You can upgrade to a total of 9 Mbytes of memory with an 8 Mbyte JEDIA memory module not currently available from HP Parts and Diagrams 8 5 8 sweibeig pue syed Common Hardware Table 8 2 Common Fasteners Used in the Printer Screw Machine Trus Head M3x4 M3x6 M3x8 Screw Star 3x6 Screw Self tap 4x10 Screw Hex head 3x8 Screw Hexhead 3x6 m 3x8 3x10 8 6 Parts and Diagrams Figure 8 1 Pick up Assembly Figure 8 7 Transfer Roller Guide Assembly Figure 8 5 Feed Assembly Figure 8 8 Control Panel PCA Assembly Figure 8 5 Major Assembly Locations Pick up Roller Assembly Figure 8 7 DC Controller Figure 8 6 Delivery Assembly Figure 8 10 Separation Guide Assembly Figure 8 9 Parts and Diagrams 8 7 8 sweibeig pue Sued Figure 8 2 Covers and Doors 8 8 Parts and Diagrams Table 8 3 10 11 13 14 501 502 Covers and Doors LaserJet 5L Part No LaserJet 6L Part N
24. Solenoid and Sensors Table 5 1 Solenoid and Photosensors Description Paper Pick up Solenoid Enables the Paper Pickup Roller PS201 Paper Exit Sensor Senses when paper has successfully moved out of the fusing area and the next sheet of paper can be fed PS202 Paper Out Sensor PS203 Paper Registration Sensor PS204 Door Open Cartridge Sensor HP LaserJet 5L only In the HP LaserJet 6L SW101 performs the functions of 5Us PS204 Senses no paper in either the Paper Input Bin or Manual Input Slot If this sensor does not sense paper in the Input Paper Bin or the Single Sheet Input Slot the formatter displays the paper out indication on the front panel Paper must be reloaded before printing can resume Detects the leading and trailing edges of the paper Synchronizes the photosensitive drum and the top of the paper Detects whether printer door is open and cartridge is in place If the door is open or the cartridge is not in place the control panel LEDs will display an error message Printing cannot continue until the door is closed and the cartridge is in proper position Functional Overview 5 17 G M9IAJ9AQ jeuonouny 5 18 Paper Jam Detection The Paper Out Sensor PS202 Paper Registration Sensor PS203 and the Paper Exit Sensor PS201 detect when paper is moving through the printer See Figure 5 5 for roller and sensor locations If a paper jam is detected the DC Controller immediately stops the printing
25. and defects during printing Blurred areas on the page may indicate that the drum has been exposed to light for too long This causes permanent damage to the photosensitive drum Replace the cartridge Troubleshooting 7 13 Bunoouse qnoJ L AaBbCc AaBbCc AaBbCc AaBbCE AaBbCc AaBbCc AaBbCc AaBbCc Image Defect Examples This section illustrates some image defects and their possible causes Since there are many variables in the printing process you may encounter image defects that are not illustrated in the following examples If you find a defect that is not illustrated record the probable cause along with the printing environmental conditions and save a copy of the defect for future reference Each example lists in order the probable causes of the image defect Faded Print Faded or light print may consist of a faded area an entire page faded or a block of vertically aligned white streaks The toner cartridge may be getting low on toner Gently shake the cartridge to redistribute the toner or replace the cartridge The paper may not meet HP s paper specifications for example too moist or too rough See the HP LaserJet 5L User s Manual or the HP LaserJet Printer Family Paper Specifications Guide Adjust toner density setting through your software or printer driver EconoMode may be on Turn it off through your software or printer driver There may be discontinuities in the hi
26. available for technical support to assist service technicians The NARC can be reached at 1 800 544 9976 To access this service HP resellers must have a valid CZ number Product Information 1 13 L uoneuuoju yonpold Warranty This warranty gives you specific legal rights You may also have other rights which may vary from area to area Hewlett Packard warrants the 5L and 6L LaserJet printers against defects in materials and workmanship for a period of one year from the date of purchase by the end user and is not transferable During the warranty period Hewlett Packard will at its option either repair or replace hardware products that prove to be defective Should Hewlett Packard be unable to repair or replace the product within a reasonable amount of time a refund of the purchase price may be made upon return of the product To have your printer serviced by Hewlett Packard you must make arrangements to have it serviced in the country of purchase Warranty Exclusions The warranty on your HP LaserJet printer shall not apply to defects or damage resulting from Improper or inadequate maintenance by customer Customer supplied software or interfacing Unauthorized modification or misuse Operation outside of the environmental specifications for the product Operation of nonsupported printing media Duty cycle abuse see later explanation Operating the printer from a mechanical switchbox without a designated surge p
27. clean the printer e Every time you change the toner cartridge e After printing approximately 2 500 pages e Whenever print quality problems occur Clean the outside of the printer with a lightly water dampened cloth Clean the inside with only a dry lint free cloth Observe the warnings and cautions below WARNING Before you begin these steps unplug the printer to avoid shock hazard When cleaning around the front door area avoid touching the heating element It may be HOT For heating element location see Figure 6 14 4 6 Printer Maintenance CAUTION Table 4 2 Cleaning Printer Components To avoid permanent damage to the toner cartridge do not use ammonia based cleaners on or around the printer Do not touch the transfer roller with your fingers Contaminants on the roller can cause print quality problems Cleaning Printer Components COMPONENT CLEANING METHOD NOTES Outside Covers Use a water dampened cloth Do not use solvents or ammonia based cleaners Inside General Use a dry lint free cloth Remove all dust spilled toner and paper particles Exit Roller Use a water dampened lint free cloth For location see Figure 6 8 Fuser Exit Roller Use a water dampened lint free cloth For location see Figure 6 18 Pickup Roller Use a lint free cloth dampened with isopropyl alcohol For location see Figure 6 25 Pressure Roller Use a dry lint free cloth For location see Figure 6 16 Transfer R
28. diode intensity has been preparation for printing Also clean the Transfer stabilized Roller From the end of initial rotation until the Scanner Form images on the photosensitive drum based on Motor stops the VDO signal from the Formatter and transfer the image to paper LSTR last From the primary voltage DC OFF until the Main Deliver the last sheet of paper Also clean the rotation Motor stops Transfer Roller If another PRNT signal is sent from the Formatter the printer returns to the INTR period If not it returns to the STBY period Refer to Timing Diagram on the next page Functional Overview 5 19 G M9IAJ9AQ jeuonouny puooes uum K snonuiuoo sjeaus azis p v OM Bunulid 10 yeya Buil ov E EL a jeubis INAS WOLLUSA Josuas Jadeq d ADIA apoig 4ase7 serg DuidojaAe 0cSd JOJO J9UULOS dOL LNYd reubis INIYd zl quawaly bunesH D ASIS ETE aa ULNI ASIS TYM n E OS NO 13M0d Figure 5 7 General Timing Diagram HP LaserJet 5L Overview 1ona Funct 20 5 Functional Overview seg aDed usamog x Seg BANSO 4 N st SEQ SANP IN 3po1p Jase7 A ZZA S E SBPYOA 19 SUBI 90 seiq Suidojaasg ov seq Buidoaasg oa eBeio Bus Ow aSeyoa Aieuug vorm 10259 405U9 Jaded jaAl eg 0089 s
29. falls in place in front of the square tab Figure 6 17 While the shape of the lever was changed for the HP LaserJet 6L a stiffening rod was also added these procedures for Face Up Face Down Lever removal remain unchanged Figure 6 17 shows the lever from an HP LaserJet 5L Face Up Face Down Lever Replacement You can tell when the lever is in place because there are two plastic grooves that fit precisely in front of the Exit Rollers and you should be able to feel the spring s release mechanism Removal and Replacement 6 21 9 juaus9e day pue enou9y Note Figure 6 18 Fuser Exit Roller Assembly Remove Printer Covers Delivery Assembly Figures 6 9 and 6 10 Fuser Pressure Plate Figure 6 11 and Heating Element Figures 6 13 through 6 15 Pressure Roller Figure 6 16 and Face Up Face Down Lever Figure 6 17 Remove the gear from the left end of the roller shaft by pressing down on the catching mechanism with the small flathead screwdriver and pulling the gear away Remove the Exit Roller Assembly by pressing the small white tab upward Figure 6 18 callout 1 and rotating it around Figure 6 18 callout 2 While the shape of the white tab was changed for the HP LaserJet 6L these procedures for Fuser Exit Roller Assembly removal remain unchanged Figure 6 18 shows the white tab from an HP LaserJet 5L Slide the Exit Roller Assembly forward and out to the right of the printer Fuser Exit
30. have added Your Total Memory in the Printer Information section will show the new MB total 1 MByte card 2 MByte total 2 MByte card 3 MByte total 4 MByte card 5 MByte total 8 MByte card 9 MByte total Removal and Replacement 6 5 9 juawa9e day pue jeaowsy Covers and Doors Back Cover Unplug the power cord and remove the parallel cable from the back of the printer 2 Remove the toner cartridge 3 Lift the Input Extender assembly Caution You must lift the Input Extender when the covers are removed or it will break After you have removed the covers leave the Input Extender in this lifted position for ease of replacement 4 Remove the 3 screws Figure 6 2 callout 1 Figure 6 2 Back Cover Removal 1 of 2 6 6 Removal and Replacement 5 Separate the rear panel from the main cover pulling the lower corners away from the printer first Then insert the small flathead screwdriver into the openings at the top to pop the upper corners Figure 6 3 callout 1 6 Remove the cover by grabbing it on both sides and pulling it straight back with a firm pull Figure 6 3 callout 2 Figure 6 3 A m Back Cover Removal 2 of 2 To reinstall Make certain the Input Extender is up Removal and Replacement 6 7 EP Door Assembly 1 Unplug the power cord and remove the parallel cable from the back of the printer 2 Open the EP door 3 Remove the toner cartridge 4 Along the door hinge t
31. in two separate pieces Be careful to order the correct pieces should you need to replace them Removal and Replacement 6 47 9 juauls9e day pue enou9y 6 48 Removal and Replacement Troubleshooting Contents General Troubleshooting Flowchart o o 7 3 Paper Path and Components e 7 5 DC Controller Diagram e 7 6 Printer Error Troubleshooting o e e 7 1 Priority of Errors es 7 1 Printer Status Messages le 7 8 Service and Error Messages lees 7 10 Image Formation Troubleshooting ss 7 13 Check the Toner Cartridge e e e 7 13 Image Defect Examples o lee 7 14 Troubleshooting Checks 0 000 eee ee eee eee 7 21 Engine Test 252205 a ae Bee RL a we ee ae ets 7 21 Half Self Test Functional Check o o ooo o 7 22 Drum Rotation Functional Check l l 7 23 High Voltage Power Supply Check o o o o ooo o 7 24 Paper Curl dara o a a a a Gee sew up we ee a 7 26 Troubleshooting Tools lle 7 27 Paper Path Check ue a ae ae ae Rmo a ae es oy somos 7 27 Repetitive Image Defect Ruler o o 7 28 Main Wiring Diagram e 7 29 Troubleshooting 7 1 7 2 Troubleshooting General Troubleshooting Flowchart AC Power is applied to the printer Does the Printer Motor rotate for ab
32. metallic object such as a pen or pencil to press the engine test button A single test page is printed See Figure 7 4 Engine Test Printout Engine Test Troubleshooting 7 21 Bunoouse qnoJ L Half Self Test Functional Check The electrophotographic process can be subdivided into the following stages Cleaning removing excess toner from drum surface Conditioning placing a uniform electrical charge on drum Writing laser strikes surface of drum to create latent image Development formation of the toner image on drum Transfer charge to transfer the image to paper Fusing heat and pressure to produce a permanent image The purpose of the Half Self Test Check is to determine which process is malfunctioning Perform the test as follows Initiate a self test 2 Open the Printer Door after the paper advances half way through the printer about 8 seconds after the Motor begins rotation The leading edge of the paper should have advanced past the toner cartridge 3 Remove the toner cartridge 4 Open the toner cartridge s drum shield to view the drum s surface If a dark and distinct toner image is present on the drum s surface assume that the first four functions of the electrophotographic process are functioning cleaning conditioning writing and developing see Chapter 5 Troubleshoot the failure as a transfer or fusing problem If N
33. of time which allows you to return to your application sooner Enhanced I O has the following options 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 Off uses the minimum amount of printer memory for storing data sent from the host computer Enhanced I O is only available in PCL mode When using the host based driver your PC handles memory management Page Protect Page complexity rules complex graphics or dense text may 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 may 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 Page Protect allows the Formatter to create the entire page image in page buffer memory before physically moving the paper through the printer This process ensures that the entire page will be printed Page Protect applies only to PCL printing The default setting is Auto PJL Overview Printer Job Language PJL is an integral part of configuration in addition to the standard Printer Command Language PCL With standard Centronics cabling PJL allows the printer to perform functions such as Two way communication with the host computer
34. press and release the Front Panel Button to continue printing There may be some data loss on the page Hint To avoid this in the future 1 See your printer driver help for more suggestions regarding printer memory usage 2 Reduce resolution to 300 dpi with your software 3 Install additional printer memory See chapter 6 for information on installing additional memory No action is necessary When you press the Front Panel Button send data to the printer or open the printer door the status light comes on 1 If you have added an additional memory card try removing it 2 Disconnect the power for 10 seconds then reconnect it 3 If all of the lights come on steadily again try disconnecting the power for 15 minutes If this error remains after completing the tasks above see Chapter 7 Troubleshooting For memory card specifications see the HP LaserJet 5L User s Manual appendix D or the HP LaserJet 6L User s Manual page 1 10 The memory card must be a 70 nsec or faster card Operating Overview 3 5 uoneanBiyuo5 pue uoinejeisu The Front Panel Button Depending on what state the printer is in pressing the Front Panel Button allows you to control printing tasks by either starting or resuming a printer function Use the Front Panel Button to accomplish the following tasks Table 3 2 Front Panel Button Usage All lights are off while Briefly push and release the The printer will wake up
35. printer door add the toner cartridge and clear a paper jam only to find that the printer still displays an error message If this happens troubleshoot using Table 7 3 below Bunoouse qnoJ L If the error appears and persists only after you attempt to print a page verify that the motor is functioning See Printing an Engine Test later in this chapter Unclearable Error This error will persist if any of the three paper movement photosensors PS201 PS202 and PS203 and or their flags are not functional 1 Verify that all three photosensor flags are not blocked and move freely See Figure 7 1 to identify photosensor flag locations Paper Out Flag PS202 See Figure 5 6 Paper Registration Flag PS203 See Figure 5 6 Exit Sensor Flag PS201 See Figure 6 18 2 Verify that all connectors are firmly seated See Figure 7 2 to identify connector locations on the DC controller Door closed EP Cartridge Photosensor connector 5L only Paper Out and Registration Photosensor Connector See Figure 5 6 Note There is no connector for the Exit Photosensor PS201 since it is located on the DC Controller PCA This flag is located beneath the Fusing Assembly Refer to Figure 6 18 If all of the flags move freely and all of the connectors are correctly seated yet the error persists replace the DC Controller PCA Troubleshooting 7 9
36. process and causes a paper jam indication on the front panel A paper jam can be detected under any of the following conditions e Power On Jams Paper is present under either PS201 or PS203 at power on e Pickup Jams Paper does not reach and clear photosensor PS203 within a specified period of time The time period begins when the Paper Pickup Solenoid SL1 is energized Delay Jams Paper does not reach or clear a specific photosensor within a specified period of time Functional Overview Basic Sequence of Operation The Formatter PCA and the DC Controller PCA share information during printer operation The DC Controller to Formatter Connector J201 forms a link which operates as a serial data bus This allows printer status command information and dot image data to be passed between the two PCAs Figure 5 7 shows the general timing of the printer events The following events take place during normal printer operation Table 5 2 Printer Timing WAIT From when the paper is inserted to the end of Main Clear the drum surface potential and clean the Motor initial rotation Transfer Roller STBY standby From the end of the WAIT or the LSTR period until Maintain the printer in ready state the input of the PRNT signal from the Formatter Or from the end of the LSTR period until power OFF INTR initial From the input of the PRNT signal from the Stabilize the photosensitive drum sensitivity in rotation Formatter until the laser
37. remove the dirt the roller may be worn out Replace the roller Check separation pad and subpads If they re worn replace them Clean the Delivery Roller If you cannot remove the dirt replace the roller Restack the paper in the paper input source and try reprinting the job Troubleshooting 7 19 Aa 7 20 Troubleshooting Distorted Image or BD Failure e Make certain the printer is not facing the sunlight The paper may not meet HP s paper specifications Select different paper Clean the Laser Scanner Assembly by blowing compressed air in the slot on the bottom of the assembly Make sure the two Laser Scanner connectors are firmly seated Replace the Laser Scanner unit Replace the DC Controller Figure 7 4 Troubleshooting Checks Engine Test The engine test print is used to verify that the print engine is functioning correctly The Formatter PCA is completely bypassed during an engine test so this test is useful for isolating printer problems The engine test prints a full page of vertical lines down the entire printable area and is also useful for checking and adjusting registration Engine Test Button Location The engine test print button is located on the DC Controller PCA It is accessible through a hole at the front of the printer See Figure 7 4 Printing an Engine Test The engine test button is accessible without removing the covers To print an engine test use a long non
38. system is given in the table below Table 7 5 High Voltage Power Supply Check Toner Cartridge Connection Points Visually inspect the three connection points on the underside right end of the toner cartridge If they are dirty or corroded clean the connections Use alcohol only If damaged replace the toner cartridge See Figure 7 5 below High Voltage Connector Assembly This assembly uses spring loaded pins to contact the toner cartridge See Figure 7 6 on the following page Verify that the pins are not dirty or corroded and that the spring loading action is functional If the pins are dirty clean using alcohol only if damaged replace the High Voltage Connector Assembly Figure 7 5 Toner Cartridge High Voltage Connection Points 1 of 2 Charging 1 Drum Ground 2 Developing Roller 3 7 24 Troubleshooting Figure 7 6 Toner Cartridge High Voltage Connection Points Charging 1 Drum Ground 2 Developing Roller 3 2 of 2 Troubleshooting 7 25 Bunoouse qnoJ L Table 7 6 Paper Curl 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 The specification for maximum paper curl when the paper is lying flat before print is 5 mm 0 2 inches Although paper curl cannot be totally eliminated some steps can be taken to lessen its impact as suggested in the fol
39. the Front Panel Button Resolution Enhancement REt The Formatter PCA contains circuitry for Resolution Enhancement technology REt which modifies the standard video dot data on its way to the DC Controller to produce smoothed black to white boundaries REt is user adjustable from some software applications Available settings are On or Off Functional Overview 5 9 G M9IAJ9AQ jeuonouny EconoMode The EconoMode setting uses approximately 50 less toner than standard mode printing by reducing the dot density However EconoMode does not extend toner cartridge component life EconoMode which can also be thought of as draft mode is user selectable through some software applications The default setting is Off Figure 5 3 Normal Mode Medium Density EconoMode Medium Density EconoMode vs Normal Mode Note EconoMode does not affect print speed or memory usage Memory Enhancement technology MEt The Hewlett Packard Memory Enhancement technology Met effectively doubles the standard memory through a variety of font and data compression methods MEt is only available in PCL mode and is not customer selectable When using the host based driver your PC handles memory management 5 10 Functional Overview Enhanced I O The Enhanced I O feature allows printer memory to be used for storing data received from the host computer When Enhanced I O is enabled you can send more data to your printer in shorter amounts
40. the paper After separation the drum is cleaned and conditioned for the next image Step 6 Image Fusing During the fusing process the toner is fused into the paper by heat and pressure to produce a permanent image The paper passes between a heated fusing element and a soft pressure roller This melts the toner and presses it into the paper Functional Overview Paper Feed System Both the Paper Input Bin and the Single Sheet Input Slot merge into one main input area Paper placed in either of these areas enables the Paper Out Sensor sensor 202 which informs the DC Controller that paper is present When the printer receives a print job and is ready to print the DC Controller enables the Laser Scanner Assembly and the Motor Paper motion begins when the DC Controller energizes solenoid SL1 This causes the paper pick up roller to rotate once Two actions occur as a result of this rotation First the paper kick plate pushes the paper against the pick up roller Second the pick up 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 along with two subpads hold the remainder of the stack in place The feed assembly drive rollers advance the paper to the Paper Registration photosensor PS203 This sensor informs the DC Controller of the exact location of the paper s leading edge so that the image being written on the photosensitive drum can be prec
41. to a plugged into power source button ready state Self Test Ready bottom light is on Briefly push and release the Prints a self test page and the other lights are off button Printer Reset The Ready bottom Light Press and hold the button The reset will return the printer to will remain lit if there are no until the three Front Panel the factory default settings This printer errors Lights blink quickly in clears all data from memory Succession including any downloaded fonts and macros Resume from The Data middle Light Briefly push and release the Override manual feed to print Manual Feed blinks button from paper cassette Continue from Error top light blinks Briefly push and release the Allows the printer to recover and memory error button continue printing the job Form Feed The Data middle Light and Briefly push and release the The remaining data in printer the Ready bottom Light memory will print both remain on 3 6 Operating Overview Printing a Self Test Page A self test page can be useful in troubleshooting printer problems and determining which fonts have been downloaded to the printer Figure 3 1 Resolution Enhancement technology amp Microfine Toner 26 Scalable Typefaces Courier CG Times It Univers Md Cd It Courier Bd CG Times Bd It Univers Bd Cd It Courier It Coronel Antique Olive Courier Bd It Univers Md Antique Olive Bd Letter Gothic Univers Bd Antique Olive It Let
42. 00 CNVM175233 CNVN000000 CNVN189964 LaserJet 5L Printer Fuser Jam Clearing Countermeasure To Be Performed By HP Authorized Personnel Parts required RB1 7334 000CN JP Jam Prevention Protector General Description When a paper jam occurs in the LaserJet 5L it will commonly occur in the fuser area with the paper folding accordion style between the fuser and delivery assembly The paper jams in the fuser can be such that the customers cannot remove the paper and the printer requires servicing Customers attempting to clear the jams often cause damage to the printer This countermeasure will not prevent paper jams but will allow users to clear the paper jams without damaging the printer Continued DATE 10 June 1996 ADMINISTRATIVE INFORMATION SERVICE NOTE CLASSIFICATION ACTION IMMEDIATELY STANDARDS CATEGORY M ON SPECIFIED FAILURE LABOR 0 5 Hours AGREEABLE TIME LOCATION CUSTOMER INSTALLABLE SERVICE RETURN USED RETURN CATEGORY ON SITE INVENTORY SCRAP PARTS j SCRAP m HP LOCATION SEE TEXT SEE TEXT AVAILABILITY PRODUCT S SUPPORT LIFE RESPONSIBLE UNTIL 10 May 1998 AUTHOR SKL ENTITY 4600 ADDITIONAL INFORMATION Reissued to correct Figure A Service Notes C 3 S9 ON 39IN19S 9 C 4 Service Notes To remove this type of paper jam the fuser area of the printer must be disassembled The fuser and pressure roller should b
43. 000CN Input Assembly 2 oo N E Input Assembly 2 Input Extender 1 ala r p Input Extender 1 elole e o o NPM Mh MP Ph Pp Input Extender 2 ala wj N Input Sensor Assembly JP Protector Kick Plate Spring Laser Cable 5L Laser Scanner Exchange 5L Laser Scanner New 5L Laser Scanner New 6L RB1 7185 000CN qe d o 00 N zt ES D e Table A 1 Alphabetical Parts List continued Desert O ne Main Motor RH7 1282 000CN Output Tray Fin RB1 7332 000CN Pape Fup Rar Cabe possem 26 scanner Gabie 6 Roszoeoxcw es Seamercabe 81 rossceramon es Plo o eo m e o e e o o elo o e o o m roj ro rm rnjrnjrnji Az Parts Index A 5 Table A 1 A 6 Parts Index Alphabetical Parts List continued Screw with star washer Screw Screw Screw Screw crew Screw Screw Screw Screw Screw 5L Screw 6L Screw DC Controller PCA 5L Screw DC Controller PCA 6L Screw DC Controller PCA Screw Separation Guide Assembly 5L Separation Guide Assembly 6L Separation Pad Assembly Solenoid Spur Assembly Inside 5L Spur Assembly Inside 6L Spur Assembly Outside 5L Spur Assembly Outside 6L Thermistor Cable Transfer Guide Assembly 5L Transfer Guide Assembly 6L Transfer Roller Transfer Roller Guide 5L Transfer Roller Guide 6L XA9 0724 000C XA9 0855 000C XB1
44. 09 000CN C3941 69001 n a C3941 69002 n a RG5 3510 000CN RG5 3510 000CN 1 DC Controller PCA 220 V DC Controller PCA 110 V Exchange DC Controller PCA 220 V Exchange 1 DC Controller PCA Case Assembly 1 Control Panel PCA Cable EN EN MN a Screw TP M3x4 Screw WStar Paper Pickup Cable Door Sensor Cable Thermistor Cable Motor Cable Scanner Cable Laser Cable Door Switch Cable NN Fuse 101 110 V ps 1 Fuse 101 220 V EXT Fuse 102 110 V Parts and Diagrams 8 17 8 sweibeig pue syed Figure 8 7 See Figure 8 8 Pickup Roller Assembly 8 18 Parts and Diagrams Table 8 8 Ret LaserJet 5L Part No LaserJet 6L Part No Qty RB1 7177 000CN RB1 7177 000CN Paper Feed Frame RY7 5008 000CN RY7 5008 000CN Separation Pad Assembly 2 3 4 5 13 14 16 17 18 Pickup Roller Assembly RG5 1947 000CN RG5 1947 000CN Idler Roller Shaft Assembly 501 XB4 7401 0007 XB4 7401 0007 Screw TP PH M4x10 Parts and Diagrams 8 19 8 sweibeig pue syed Figure 8 8 Feed Assembly 8 20 Parts and Diagrams Table 8 9 Ret LaserJet 5L Part No LaserJet 6L Part No Qty S RG5 1942 000CN RG5 3485 000CN Feed Assembly ES RB1 7226 000CN RB2 1699 000CN Idler Roller Parts and Diagrams 8 21 8 sweibeig pue syed o o o D iL Separation Guide Assembly 22 Parts and Diagrams 8 Table 8 10 me LaserJet 5L Part No La
45. 1000 uopensiBeu ano Jedeg v0ZSd Jeueg o uo VOd 1eneuuoJ 1801 eujBu3 e Lozms pa Jedeg 191011409 OG Ajuo 40A OLL zoind aa ui ud YOLOINNOO 3OVINOA HOIH Ajquiessy 35diH1HVO da Buisn4 Main Wiring Diagram Figure 7 9 Troubleshooting 7 29 Table 7 7 Cable Pinouts 7 30 Troubleshooting seem romae ESOO EE A w ooo NENNEN O AA pa NU AI E k VDOUT Laser Drive Signal Beam Detect Input Signal Table 7 8 Cable Pinouts H when cartridge is not installed or the front door is open at PS204 Troubleshooting 7 31 Bunoouse qnoJ L 7 32 Troubleshooting Parts and Diagrams Contents How to Use the Part Lists and Diagrams o o 8 3 Ordering Par s ceci ar A rra da ana ee eg a 8 3 Ordering Consumables e e 8 4 Accessories and Supplies o o e 8 5 Common Hardware ee 8 6 Parts and Diagrams 8 1 8 2 Parts and Diagrams How to Use the Part Lists and Diagrams 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 Each table lists the reference designator item number for each part the associated part number for the item the quantity and a description of the part While looking for a part number pay careful attention to the voltage listed in the descr
46. 1300 807C XA9 0267 000C XA9 0824 000C XA9 0686 000C XA9 0724 000C XA9 0724 000C XB4 7401 0074CN XB4 7401 0007 XB4 7401 007C XB6 7300 807C XA9 0267 000C XA9 0326 000C XA9 0890 000C XA9 0828 000C XB6 7300 607C RG5 2013 000CN RG5 3475 000CN RY7 5008 000CN RH7 5139 000CN RG5 2014 000CN RG5 3478 000CN RG5 2015 000CN RG5 3479 000CN RG5 2032 000CN RG5 1961 000CN RG5 3452 000CN RF5 1534 000CN RF5 1530 000CN RF5 2358 000CN Table A 2 Numerical Parts Index A DC Controller PCA 110V Exchange 5L EEJ DC Controller PCA 220V Exchange 5L 86 Laser Scanner Exchange 5L Formatter New 5L 86 Formatter Exchange 5L 86 O Formatter New 6L 86 CET owe Pae GU RE TETEO00N Fer ane ow Sharan es Parts Index A 7 Table A 2 A 8 Parts Index Numerical Parts List continued Panno pesen f e nas 7s 0000n uermaermnm Gu es CA AT 9 CNT omamesweu ss Table A 2 Numerical Parts List continued en O COC PAE eo Wesemor E AC RG5 2023 000C DC Controller PCA 110 V E md RG5 2025 000CN DC Controller PCA Y V 5L Y Parts Index A 9 Table A 2 A 10 Parts Index Numerical Parts List continued ACTOR em a Rasasromo Does senrose 86 Fosnzooocen memet es RG5 3459 000CN Heating Element 110 V 6L RG5 3463 000CN Heating Element 220 V 6L RG5 3474 000CN Delivery Assembly 6L 8 10 RG5 3475 000CN Separation Guide As
47. A 60001 NTSC C3990 49A 60002 PAL X X HP LaserJet 6L Printer Service Manual Bundle C3990 99001 includes Service Manual C3990 90991 Paper Specifications Guide 5021 0368 Quick Ref Pocket Guide 5021 0369 HP LaserJet 6L Printer NTSC Kit C3990 67901 includes Box 9211 6385 6L Video Kit Label C3990 00010 6L Combined Test Kit C3990 67902 6L Video Tape C3990 99002 HP LaserJet 6L Printer PAL Kit C3990 67903 includes Cardboard Sleeve 5002 0556 VHS PAL Tape 5010 6306 6L Spine Label C3990 00012 6L Face Label C3990 00013 6L Pal Kit Label C3990 00014 HP LaserJet 6L Combined Test Kit C3990 67902 includes Return Envelopes 5002 0562 Final Exam 5960 6642 6L Test Kit Label C3990 0001 1 6L Test Books 5 total C3990 90992 Note the five Test Books are labeled A through E Specific Application Specific Application Drivers Specific Application Drivers Product Information 1 11 L uoneuuoju yonpold Technical Assistance Online Services for 24 hour access to information over your modem we suggest these services Obtaining Software Utilities and Electronic Information U S and Canada Asia Pacific Countries Australia New Zealand HP Direct Ordering for Accessories and Supplies HP Support Assistant CD ROM HP Service Information HP Service Agreements World Wide Web URL Printer drivers updated HP printer software and product and support information may be obtained from http www hp com or in Euro
48. C as follows 5 V DC Formatter PCA Photosensors DC Controller Circuitry Laser Beam Detect Circuitry 12 V DC Motor Scanner Motor Solenoid 12VA DC High Voltage Power Supply Overcurrent Overvoltage Protection There are two overvoltage overcurrent devices in this printer Fuse F101 provides overcurrent protection for the fusing system circuitry To check or replace the fuse requires the removal of the DC Controller Fuse 102 found only on 110V units provides overcurrent protection to the printer DC power supply circuitry In addition the 12V DC and 5V DC power circuitry contains an overcurrent protection circuit which automatically shuts off the output voltage when an overcurrent condition occurs due to a short or abnormal voltage on the load side SleepMode Instead of a power switch the printer has a SleepMode function After the printer has been idle for 15 minutes it turns itself off by shifting to SleepMode The front panel lights remain off and the printer retains all printer settings and downloaded fonts and macros while in SleepMode Functional Overview Note The printer exits SleepMode and all of the lights power on when any of the following occur A job is received The Front Panel Button is pressed The printer front door is opened The printer will not enter SleepMode if there is a printer error High Voltage Power Distribution The High Voltage Power Supply PCA applies an overlap of DC and AC
49. DEN BIVD BOISE IDAHO 83714 U S A Made in U S A O HEWLETT RS5 8532 PACKARD HP LaserJet 5L Model and Serial Numbers 1 4 Product Information POWER RATING 220 240V v 50Hz 1 04 This device complies with Part 15 of the FCC Rules Operation is subject to the This product conforms with CDRH radiation performance standard 21 CFR chapter 1 sub chapter J HEWLETT PACKARD Apparaten skall anslutas till BOISE PRINTER DIVISION jordat uttag nar den ansluts Bose Dano 83714 USA Made in U S A Ei HEWLETT R55 8536 O PACKARD CLASS 1 LASER PRODUCT LASER KLASSE 1 APPAREIL A RAYONNEMENT LASER DE CLASSE 1 APPARECCHIO LASER DI CLASSE 1 PRODUCTO LASER DE CLASE APARELHO A LASER DE CLASSE EN608251991 Figure 1 2 POWER RATING 100 120V 127V 50 60Hz 2 2A 60Hz 2 2A op NOM1 M we NCI Complies with Canadian EMC Class B requirements MANUFACTURED Conforme la classe B des r 1 normes canadiennes de compatibilit lectromagn tiques CEM This product conforms with CDRH radiation performance standard 21 CFR chapter 1 sub chapter J Tested To Comply With FCC Standards FOR HOME OR OFFICE USE FCCID B94C3941A HEWLETEPACKARD BOISE PRINTER DIVISION 1311 CHINDEN BIVD BOISE IDAHO 83714 U S A Made in Japan HEWLETT 65 8972 UJ ouo HP LaserJet 6L Model and Serial Numbers POWER RATING 220 240V v 50Hz 1 1A Tested To Comply With FCC Standards F
50. KZEEEE EEEEZZ EEZZZZZ EECEEZE EZZZKKK KEEEEE KZZZEE EECEEZ ZZZKKKE KKE KKKEEEECK ZZZEEE KKEMEEE 222 EEEKKKEE ZZKKEFEE KKKKKEE EECE FEKZZZK CEEEE ZEEEEZ EEEEEKKK ZZZZ RELECE ZKZ E KZKZKZK EKEKEKE KK EELEEK ZZKZKZK EKEKEK EKEKEKEKE KKKKEEE KKZ ZZZZZKKKK EKKKKKZZZ EKZEEEE EESEZZ EEZZZZZ EECEEZE EZZZKKK KEEEEE KZZZEE EEEEEZ ZZZKKKE KKEZZZ KKKEEEEEK ZZZEEE KKEMEEE 222 EEEKKKEE ZZKAEEEE KKKKKEE EEE KEI E EEKZZZK ZELEEZ EEEEEKKK ZZZZ EEGEGE ZKZKZKZZK KKKKKKK ZZZZZZ EEE KZKZKZK EKEKEKE EE KKK EECEEK ZZKZKZK EKEKEK EKEKEKE KKKKEEE KKZ ZZZZZKKKK EKKKKKZZZ EKEKEK EKZEEZZEFEKKEEEZ EEKKZZZZZEEEKK KXKKEEFEEFZZZZEF Five Percent Text Coverage When regularly printing pages with less coverage such as short memos a toner cartridge should print over 2500 pages However if routinely printing very dense print the cartridge will not print a full 2500 pages For best results always use a toner cartridge before the expiration date stamped on the toner cartridge box Saving Toner with EconoMode Toner cartridge life can be extended dramatically by using the EconoMode printing feature of the printer EconoMode uses approximately 50 less toner than normal printing The printed page is much lighter and is adequate for printing drafts or 4 4 Printer Maintenance Notes proofs EconoMode can be set through your printer driver See Chapter 3 for information Some software applications may refer to this as draft mode Refilled Toner Cartridges W
51. LA oca HP LaserJet 5L and 6L Printer Service Manual Service Manual HP LaserJet 5L HP LaserJet 6L C3941A C3990A O Copyright Hewlett Packard Company 1997 All Rights Reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws Publication number C3990 9099 First edition May 1997 Hewlett Packard Company 11311 Chinden Boulevard Boise Idaho 83714 WARNING Electrical Shock Hazard Warranty The information contained in this document is subject to change without notice To avoid electrical shock use only supplied power cords and connect only to properly grounded 3 hole wall outlets Hewlett Packard makes no warranty of any kind with regard to this material including but not limited to the implied warranties or merchantability and fitness for a particular purpose Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damaged in connection with the furnishing performance or use of this material Note Caution WARNING Conventions This manual uses the following conventions Color is used to emphasize items which are important to the material under discussion The names of major printer parts and assemblies are CAPITALIZED Bold is used for emphasis particularly in situations where italic type would be confusing Italic type is used to indicate relate
52. O image is present on the photosensitive drum perform the following functional checks 1 Make sure you have removed the entire length of the sealing tape from the toner cartridge before you installed the cartridge 2 Drum Rotation Functional Check 3 High Voltage Power Supply Check 7 22 Troubleshooting Note Y N E A Un Drum Rotation Functional Check The 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 To verify whether the drum is rotating Open the Printer Door Remove the toner cartridge Mark the cartridge s drive gear with a felt tipped marker Note the position of the mark Install the toner cartridge and close the Printer Door The start up sequence should rotate the drum enough to move the mark 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 ensure 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 This test is especially important if refilled toner cartridges have been used Troubleshooting 7 23 Bunoouse qnoJ L High Voltage Power Supply Check The High Voltage Power Supply PCA provides the necessary voltages for the electrophotographic processes A method for verifying the high voltage
53. OR HOME OR OFFICE USE This product conforms with CDRH radiation performance standard 21 CFR chapter 1 sub chapter J MANUFACTURED HEWLETT PACKARD BOISE PRINTER DIVISION 11311 CHINDEN BIVD BOISE IDAHO 83714 U S A Made in Japan O Ee RS5 8975 PACKARD CLASS 1 LASER PRODUCT LASER KLASSE 1 APPAREIL A RAYONNEMENT LASER DE CLASSE 1 APPARECCHIO LASER DI CLASSE 1 PRODUCTO LASER DE CLASET APARELHO A LASER DE CLASSE EN60825 1991 Product Information 1 5 L 33 52 22 o e Specifications Table 1 3 Performance Specifications Print Speed HP LaserJet 5L 4 ppm Print Speed HP LaserJet 6L 6 ppm Monthly Usage Duty Cycle HP LaserJet 5L 4 000 pages Monthly Usage Duty Cycle HP LaserJet 6L 6 000 pages Life Expectancy of Toner Cartridge pages 2 500 pages O 5 coverage First Print A4 23 seconds Letter 23 seconds Actual speed depends on data complexity and software handling efficiency Toner cartridge life can be extended by using EconoMode Table 1 4 Electrical Specifications 120 Vac 10 50 60 Hz 2 Hz 3 5 9 120v printing 100 5L 150 6L 100 Vac 10 50 60 Hz 2 Hz SleepMode 6 5L 4 6L 220 Vac 10 50 Hz 2 Hz 1 8 230v printing 100 5L 150 6L 240 Vac 10 50 Hz 2 Hz SleepMode 6 5L 4 6L Minimum recommended circuit capacity for product Table 1 5 Acoustic Emissions During Printing 5 6 Bels Sound Power Level per ISO 9296 D
54. Only Memory ROM Besides storing microprocessor control programs the ROM stores dot patterns of internal character sets fonts Random Access Memory RAM The RAM stores printing and downloaded font information received from the host system and temporarily stores a full page of print image data before the data is sent to the print engine See Page Protect later in this chapter Memory capacity can be increased by adding a DRAM memory card to the Formatter PCA Note that adding memory may also increase print speed when printing complex graphics Parallel Interface The Formatter PCA receives incoming data through its Bi Tronics interface The Bi Tronics I O provides high speed and two way communication between the printer and the host allowing the user to change printer settings and monitor printer status from the host computer This interface is IEEE 1284 compliant Functional Overview Control Panel Status LED Lights The Formatter uses three LEDs mounted under the printer cover to communicate printer status to the user Refer to Using the Control Panel in Chapter 3 and Printer Error Troubleshooting in Chapter 7 for more information on the lights Front Panel Button The Formatter PCA is connected to a microswitch located on the control panel PCA The single button is used for such functions as self test reset and to display error codes Refer to Using the Control Panel in Chapter 3 for more information on
55. Replacement 6 3 9 1ueuie2e dou pue jeaowsy Required Tools 2 Phillips screwdriver with a magnetic tip 5 5 mm hexhead nutdriver small flathead screwdriver needlenose pliers Caution A Posidriv screwdriver will damage the printer s screw heads Use Phillips only Figure 6 1 shows the difference between a Phillips and a Posidriv screwdriver Note that a Phillips tip has more beveled surfaces Figure 6 1 Phillips Posidriv Phillips and Posidriv screwdrivers 6 4 Removal and Replacement Installing Memory Cards DRAM 1 Unplug the power cord from the printer You should not install a memory card while the printer is in SleepMode 2 Open the Printer Door remove the toner cartridge and close the Printer Door Protect the toner cartridge from light while you are working on the printer 3 Remove any paper in the paper tray Gently tip the printer onto its side so that the memory cover is on top as shown in Figure 3 4 Remove the Memory Expansion Cover by carefully pulling the tab out and away from the printer in a gentle rocking motion 5 Align the memory card with the corner notch so it is positioned as in Figure 4 Push it firmly into the printer Replace the Memory Expansion Cover set the printer upright reinstall the toner cartridge reinsert paper and reconnect to the power source Print a self test page see Chapter 3 to check that the printer recognizes the additional memory you
56. Roller Removal 6 22 Removal and Replacement Caution Note Figure 6 19 Paper Exit Sensor Flag 1 Remove the Printer Covers Delivery Assembly Figures 6 9 and 6 10 and Fuser Pressure Plate Figure 6 11 Before proceeding to Step 2 examine the Paper Exit Sensor flag It is important to note the position of the spring mechanism on the flag The spring must be reinstalled to exactly this position 2 Remove the Paper Exit Sensor flag by pressing down on the left side and pulling up on the right side To reinstall It is important that you reinstall the flag correctly because installing it incorrectly will cause the Control Panel to display an error with the Paper Exit Sensor PS201 Place the left side of the flag in the correct position first then slide the right side into place making certain the spring is on top of the flag Figure 6 19 If the spring exerts no pressure on the flag it may require respringing by giving the spring an extra turn before reinstalling The flag should fit snugly in place Paper Exit Sensor Flag Replacement Removal and Replacement 6 23 9 jueuuje2ejdou pue jeAowsY Top Assemblies Laser Scanner Assembly Remove the Printer Covers 2 Remove both Laser Scanner connectors Figure 6 20 callout 1 3 Remove all 4 screws and lift the assembly straight off Figure 6 20 callout 2 Note One of the four screws is longer than the other three Upon reinstallation th
57. The DC Controller also includes both AC and DC power supply and distribution circuitry The DC Controller controls the following systems and functions e Print Engine Control e Laser and Scanner Drive e Paper Motion Photosensors Paper Out Paper Registration and Paper Exit Sensors e Motor Power System AC Power Distribution DC Power Distribution Overcurrent Undervoltage Protection SleepMode High Voltage Power Distribution Figure 5 2 shows the various DC controller loads Formatter DC Controller Laser Scanner PCA Assembly fo EM Toner Cartridge Delivery Charging Roller Paper Sensor Developing Roller ias Transfer Roller Fusing Assembly Front Panel Sensors Solenoid DC Controller Loads Functional Overview Print Engine Control System Laser and Scanner Drive Based on information received from the Formatter the DC Controller sends signals to the Laser Scanner Assembly to modulate the laser diode ON and OFF and to drive the Laser Scanner motor Refer to Image Formation System later in this chapter for more information Paper Motion Monitoring and Control The DC Controller PCA controls paper motion 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 photosensors and solenoid with the paper movement process refer to the section Paper Feed System later in t
58. United States 800 333 1917 813 3335 8622 Worldwide Support U S and Canada Customer Support 8 Call 208 323 2551 Mon Fri 6 am to 10 pm and Saturday 9 am to 4 pm Mountain Time free of charge during the Warranty Period however your standard long distance phone charges still apply Please have your serial number ready when calling Product Repair Assistance Please refer to the warranty chapter of this manual for additional product repair information Post warranty telephone assistance is available to answer your product questions Call 900 555 1500 2 50 per minute U S only or call 800 999 1148 25 per call Visa or MasterCard U S and Canada Mon Fri 7 am to 6 pm and Saturday from 9 am to 3 pm Mountain Time Charges begin only when you connect with a support technician Prices subject to change European Customer Support Center Language and In Country Options Available Open Monday Friday 8 30 18 00 CET HP provides a free telephone support service during the warranty period By calling a telephone number listed below you will be connected to a responsive team waiting to help you If you require support after your warranty has expired you can receive support for a fee through the same telephone number The fee is charged on a per incident basis When calling HP please have the following information ready Product name and serial number Dutch Belgium Netherlands Ireland UK English
59. and no other warranty whether written or oral is expressed or implied Hewlett Packard specifically disclaims the implied warranties of merchantability and fitness for a particular purpose Some areas do not allow limitations on how long an implied warranty lasts so the preceding limitation or exclusion may not apply to you However any implied warranty of merchantability or fitness is limited to the one year duration of this written warranty In no event will Hewlett Packard or its suppliers be liable to you for any consequential or incidental damages including any lost profits or lost savings or for any claim by any party even if a representative of HP or its suppliers has been advised of the possibility of such damages Some areas states or provinces do not allow the exclusion or limitation of incidental or consequential damages so the preceding limitation or exclusion may not apply to you Voltage Conversions HP LaserJet printers are manufactured to different specifications for different countries Because of these differences HP does not recommend transporting products sold within one country to another country In addition to the 115 220 voltage environment concerns the country of final destination may have different import and export restrictions power frequencies and regulatory requirements The HP LaserJet family printers must be serviced by an authorized repair depot or reseller within the country where the printer w
60. anel displays an error refer to the appropriate section in this chapter to correct the error Continued on following page Troubleshooting 7 3 Bunoouse qnoJ L General Troubleshooting Flowchart continued Perform an Engine Test Is the Engine Test image being printed clearly Perform a Front Panel Self Test Is the Self Test image being printed Clearly 7 4 Troubleshooting Refer to the section Image Formation Troubleshooting later in this chapter If the engine test produces a clear print image yet a Self Test is not generated by initiating the Control Panel self test procedure replace the Formatter PCA Paper Path and Components Figure 7 1 DC Controller PCA A 2 zl la i MOTOR DRIVE signal MA MA MB MB PAPER PICK UP SENSOR signal PICK UP SOLENOID DRIVE signal Delivery Roller Face down Delivery Deflector Transfer Face up Delivery Fusing Unit Paper Roller Delivery Exit Sensor Roller Paper Path and Components Pick up Roller Feed Sub Roller EE Paper Registration Paper Input Manual Bin PAPER OUT SENSOR signal PAPERSNS Sensor Feed Roller Troubleshooting 7 5 Bunoouse qnoJ L DC Controller Diagram
61. apter 4 Black Page A page is completely black The toner cartridge may not be installed properly Remove the cartridge and reinsert it The toner cartridge may be defective Replace it There may be discontinuities in the high voltage contact points Clean the high voltage contact points on the toner cartridge and transfer roller See Figures 7 5 and 7 6 Replace the DC Controller or Laser Scanner unit 7 16 Troubleshooting AaBbCc AaBbCc AaabCc AaBbCc AoaB oCc AaBbCc AaBbCc AARhCr Dropouts Dropouts are characters that are partially printed e The Paper Input Bin may have been loaded with too much paper Make sure that no more than 100 sheets of paper are loaded e A single sheet of paper may be defective Try reprinting the job Try adjusting the print density through your software or printer driver e Try cleaning the rollers e The moisture content of the paper may be inconsistent or the paper may have moist or wet spots on the surface Try paper from a fresh ream or a different paper manufacturer e The paper may have been damaged by inconsistent manufacturing processes Try paper from a different source Half of the Page Is Blank or Loss of Detail The bottom of the page is blank or part of a graphics image is cut off This may mean that your page is too complex for the standard printer memory Bunoouse qnoJ L e Set resolution to 300 dpi through your software o
62. as originally purchased Because of the different specifications and warranty coverage limitations Hewlett Packard does not offer a conversion or support the conversion of HP LaserJet family printers We advise those customers planning to transport equipment to different countries to purchase the products in the country of final destination Product Information 1 15 L uoneuuoju 19NPO1d 1 16 Product Information Site Requirements Contents Site Requirements a ss sa eieiei y m om ho 9 e y RR 2 3 Operating Environ Met 2 3 Printer Space Requirements e 2 4 The HP C3906A F Toner Cartridge oo e 2 5 Storage Conditions ee ee 2 5 Storing Opened Toner Cartridges o o a 2 5 Toner Cartridge Handling Suggestions o o o 2 6 Site Requirements 2 1 2 2 Site Requirements Table 2 1 Site Requirements Operating Environment The environmental requirements listed in the table below must be maintained to ensure the proper operation of this printer Environmental Requirements LaserJet 5L 6L 8 Cartridge Operating 50 to 90 5 F 10 to 32 5 C 32to 104 F 0 to 40 C Humidity 20 to 80 RH 10 to 80 RH with no condensation with no condensation Consider the following points before installing the printer Install in a well ventilated dust free area Install on a hard flat and continuous surface with all four printer feet level
63. cement 6 27 9 jueuujo2ejdou pue jenow y 4 Using needlenose pliers pull the bottom of the bushing out Figure 6 24 callout 1 then turn it counter clockwise to release it Figure 6 24 callout 2 Figure 6 24 Pickup Roller Assembly Removal 2 of 2 5 Lift the bushing out 6 From inside the front of the printer slide the right side of the Pickup Roller Assembly forward then lift the left side out 6 28 Removal and Replacement Note Figure 6 25 To reinstall After placing the Pickup Roller shaft through on the left side line up the Idler Roller tabs while repositioning the right side Rock the shaft back and forth until the Pickup Roller and the Idler Roller tabs are correctly reinstalled It is important that the Pickup Roller is placed back in with the two Idler Roller tabs up so that they fit into the underside of the metal chassis behind the Laser Scanner assembly Figure 6 25 Paper Pickup Roller Assembly Replacement Inside Front View Removal and Replacement 6 29 9 juauls9e day pue enousy Paper Feed Frame 1 Remove the Printer Covers 2 Remove the Pickup Roller Assembly Figures 6 23 through 6 24 3 Disconnect the following e Solenoid from the DC Controller at J204 Figure 6 22 callout 1 e Two connectors from the Laser Scanner Figure 6 26 callout 1 e Connector from Top Cover EP Cartridge Sensor on HP LaserJet 5L only Figure 6 26 callout 2 Connect
64. d documents or emphasis Notes contain important information set off from the text Caution messages alert you to the possibility of damage to equipment or loss of data Warning messages alert you to the possibility of personal injury 111 Chapter Descriptions Product Information Orientation to the printer as well as the service and repair philosophy is discussed Information on obtaining assistance and warranty is also here Site Requirements Here are recommendations pertaining to installation requirements Operating Overview This chapter has detailed information about the Control Panel Sample self tests and printer reset information are also included Maintenance Turn to this chapter for information about printer cleaning and care Functional Overview Here you will find the basic theory of operation information required to understand the various printer systems and how they function together Removal and Replacement This chapter contains the step by step procedures for replacing printer field replaceable units FRUs Assemblies are grouped by location in the printer Troubleshooting Diagnose printer problems here A preliminary troubleshooting table is followed by error messages image defect samples and diagnostic tools Parts and Diagrams Look here to find any field replaceable unit FRU in the printer Exploded view drawings are accompanied by complete part number tables Parts Index All parts are s
65. door is open Toner cartridge is either missing or not installed correctly There is paper jammed in the printer Let job finish printing Briefly press the Front Panel Button to print the remaining data Make sure you have the correct paper in the Single Sheet Input Bin and briefly press and release the Front Panel Button to print Add paper Close the door Install a cartridge being careful to position it correctly Clear the jam and resume printing If the Error light remains lit after checking for these problems and there s no paper jam disconnect the power for 10 seconds then reconnect to the power source If after taking these actions the light remains on refer to Chapter 7 Troubleshooting When this indicator Indicator Indicator Lights Continued 208 Continued 2 of 2 Looks like this Blinking Error light blinking Page Too Complex The page may be too complex for the printer s memory capacity or the printer may not be able to create the image fast enough to keep pace with the engine printing process All off Sleep Mode Either the printer is in SleepMode or the power source has been disabled All on Hardware Error There is an internal problem that won t allow printing All Blinking Memory Error An incompatible memory card has been installed Briefly
66. e checked for damage from the paper jam or the customer s attempts to remove the paper jam See chapter 6 in the service manual for disassembly instructions This JP protector and the output tray fin from service note C3941A 01 should be installed in all LaserJet 5L s in the affected serial number range that are being serviced Solution This JP Protector RB1 7334 000CN should be added to the delivery assembly RG5 2012 000CN of every printer in the affected serial number range that is serviced To install this part you must remove the delivery assembly per the service manual page 6 13 14 The JP Protector is shown in Figure A below The Delivery Assembly is shown in Figure 8 10 of the Service manual Install the JP Protector into the Delivery Assembly in the position shown in Figure B below Figure B shows a right side view of the Delivery Assembly with the JP Protector installed Be very careful to orient the part correctly JP Protector N JP Protector Please note Printer Front orientation Index A AC power distribution 5 6 circuitry 5 6 accessories and supplies 8 5 acoustic emissions 1 6 assistance technical 1 12 B background scatter 7 16 black page 7 16 blank page all pages 7 18 occasional 7 18 bottom assemblies DC Controller 6 44 formatter PCA 6 47 memory door guide 6 42 motor 6 43 C cable pinouts 7 30 cables replaceable 8 6 capacities output tray 1 3 caution messages 6 3 CDRH B 1 Ce
67. e consumed in the replaceable toner cartridge eliminates the need for a service call when replacement is required The special photosensitive properties of the drum allow an image to be formed on the drum surface and then transferred to paper The printer s toner cartridge does not include a light blocking shutter Be careful to avoid exposing the drum to light which can permanently damage the drum Protect the cartridge whenever removing it from the printer Step 1 Drum Cleaning The cleaning blade is in contact with the surface of the drum at all times As the drum rotates during printing excess toner wiped off and stored in the waste toner receptacle Step 2 Drum Conditioning After the drum is physically cleaned it must be conditioned This process consists of applying a uniform negative charge on the surface of the drum with the primary charging roller 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 a negative DC bias is applied by the charging roller to create a uniform negative potential on the drum surface The amount of DC voltage is modified by the print density setting Step 3 Image Writing During the writing 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 focusin
68. e longer screw must be replaced in its original location Figure 6 20 Laser Scanner Assembly Removal 6 24 Removal and Replacement Figure 6 21 Solenoid 1 Remove the Printer Covers 2 On the left side of the printer remove the paper pickup gear Figure 6 21 callout 1 by pressing the tabs in the center of the gear outward and pulling the gear off Figure 6 21 Solenoid Removal 1 of 2 Removal and Replacement 6 25 9 juawa9e doy pue jeaowsy 3 Remove the Solenoid connector J204 from the DC Controller Figure 6 22 callout 1 4 Remove the self tapping screw that holds the Solenoid in place Figure 6 22 callout 2 5 Unthread the wires from the printer chassis 6 Lift the Solenoid off Figure 6 22 Solenoid Removal 2 of 2 Note When reinstalling this part the Paper Pickup Gear is keyed to go on the shaft in only one way 6 26 Removal and Replacement Pickup Roller Assembly 1 Remove the Printer Covers 2 Remove the paper pickup gear Figure 6 21 Note This gear is keyed to go on the shaft in only one way 3 Remove the pickup roller grounding clip on the right of the printer by lifting each end of the clip up and over the two metal guides and sliding the clip off Figure 6 23 depicts the clip from an HP LaserJet 5L The clip from an HP LaserJet 6L and some HP LaserJet 5Ls is shaped differently Figure 6 23 Pickup Roller Assembly Removal 1 of 2 Removal and Repla
69. ed parts These are identified in Chapter 8 and can be ordered through HP s Parts Direct Ordering PDO or Parts Center Europe PCE Ordering Parts Field replaceable part numbers are found in Chapter 8 of this manual Replacement parts may be ordered through HP s Parts Direct Ordering PDO or Parts Center Europe PCE Ordering Consumables The printer has no consumables other than the toner cartridge which may be ordered directly from Hewlett Packard Refer to Chapter 8 for ordering information Ordering Related Documentation Table 1 6 on the following page lists part numbers and where to order related documentation Phone numbers for the various sources are Parts Direct Ordering PDO 1 800 227 8164 U S only Parts Center Europe PCE 49 7031 14 2253 e HP s Distribution Center HPD 970 339 7009 U S only URL for HP Access http www hp com URL for Software and Support http www hp com cposupport cpoindex html 1 10 Product Information Table 1 6 Related Documentation Description Part Number HP LaserJet Family Quick Reference 5021 0369 X Service Guide HP LaserJet 5L Printer C3941 90901 X Users Manual HP LaserJet 6L Printer C3990 90901 X User s Manual HP PCL5 Printer Language Technical 5010 3994 X Reference Information Package HP LaserJet Printer Family Paper 5021 0368 X Specifications Guide LaserJet Basic Hardware Training Course 5961 0880 HPLJ 5L and 6L Hardware Training Kit C3990 49
70. eed Frame Remove the Printer Covers Pickup Roller Assembly Figures 6 23 through 6 25 and Paper Feed Frame Figures 6 26 through 6 29 Turn the Paper Feed Frame upside down Remove the Feed Roller Shaft by lifting the plastic tab up Figure 6 35 callout 1 and sliding it out the side of the Paper Feed Frame Figure 6 35 callout 2 Feed Assembly Removal 1 of 3 Removal and Replacement 6 39 9 juauls9e day pue enousy 4 Remove the self tapping screw that holds the Feed Assembly in place Figure 6 36 callout 1 Note Before proceeding to Step 5 examine the tabs and how they fit into their slots Figure 6 36 callout 2 The tabs must be reinstalled to exactly this position 5 Remove the Feed Assembly Figure 6 36 Feed Assembly Removal 2 of 3 6 40 Removal and Replacement Figure 6 37 6 Turn the Feed Assembly over and place it in one hand with the roller side down Pop one of the tabs on the other side and the feed roller should fall into your hand Figure 6 37 Feed Assembly Removal 3 of 3 To reinstall Before securing the screw ensure the tabs on the Feed Assembly are positioned in their slots on the Paper Feed Frame Figure 6 35 callout 2 Failure to do so will cause paper feed problems Removal and Replacement 6 41 9 juauls9e day pue jenow y Bottom Assemblies Memory Door Guide 1 Remove the Printer Covers 2 Remove any extra memory 3 Two tabs hold the memory doo
71. elivery Roller 2 5L Delivery Roller 2 6L El Door Sensor Cable 5L IRG5 2031 000cN 86 Door Sensor Cable 6L IRGs 3662 000CN 86 4 2 2 7 4 4 4 5 7 4 5 A 2 Parts Index Table A 1 Alphabetical Parts List continued pesones po o f e Door Swich caeso nosemromov es Face vpraca down Shan GL ___ nas Tre oo0on 89 Foo spraca down Sra _ Rasae7e ooo so Former Sea Roseneeocw es Foramen fazom ss Formar Ecrane omes 6 Fomara omes es CS mmm oe Fut nt ott AE wsseemon es Fuser Gut Rol Assomoy 60 AFS 2280000 eo Parts Index A 3 Table A 1 A 4 Parts Index Alphabetical Parts List continued Description PartNo Fuser Pressure Plate Fuser Release Kit Fuser Release Tab Fuser Roller Bushing 5L Fuser Roller Bushing 6L Gear Kit 2 5L E Gear Kit 2 6L Gear Plate 5L O D D 5 2 S wolo la Co C5 Gear Plate 6L Ground Clip Scanner Heating Element 110 V 5L Heating Element 110 V 6L Heating Element 220 V 5L Heating Element 220 V 6L O Sheet Metal Idler Roller 5L Idler Roller 6L Idler Roller Shaft Assembly Input Assembly 1 5L RG5 1944 000CN RG5 3488 000CN wj DS ajaja o o jojojo wj joj A Ph Pp Input Assembly 1 6L 5L 6 a Input Extender 2 6L N N N p RG5 1945 000CN RG5 3491
72. ent 6 19 9 juawa9e doy pue jeaowsy Pressure Roller 1 Remove Printer Covers Delivery Assembly Figures 6 9 and 6 10 Fuser Pressure Plate Figure 6 11 and Heating Element Figures 6 13 through 6 15 2 Remove the Pressure Roller guide by lifting the edge Figure 6 16 callout 1 and then rolling it gently backward Figure 6 16 callout 2 Figure 6 16 Pressure Roller Guide u 3 Lift the right end of the Pressure Roller up and out of the printer chassis Note The right end of the Pressure Roller is greased 4 The left side will follow easily with the Pressure Roller gear still attached Note When reinstalling the Pressure Roller apply a drop of grease to the grounding plate on the right side of the shaft Refer to Chapter 8 for a part number 6 20 Removal and Replacement Note Figure 6 17 Note A Face Up Face Down Lever Remove Printer Covers Delivery Assembly Figures 6 9 and 6 10 Fuser Pressure Plate Figure 6 11 and Heating Element Figures 6 13 through 6 15 and Pressure Roller Figure 6 16 Rotate the lever forward 90 degrees past the spring and pull it straight out the front of the printer To reinstall Make sure the lever arm is on the left and is initially pointing downward Pull the spring forward using needlenose pliers Slide the short round tabs into the grooves on the Separation Guide Assembly The machined ridges on the lever will face you Release the spring so it
73. es Memory Door Guide MOtOE vo ic Uum sue e ee DCControler Formatter Board Removal and Replacement 6 1 6 2 Removal and Replacement WARNING Caution Note Removal and Replacement Strategy This chapter documents removal and replacement of Field Replaceable Units FRUs only Exchange assemblies should be sent to SMO for repair Replacement is generally the reverse of removal Occasionally notes are included to provide direction 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 may result 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 this printer can be sharp Exercise caution when working with the printer The printer contains parts that are electrostatic discharge ESD sensitive Always service printers at an ESD protected workstation To install a self tapping screw first turn it counter clockwise to align it with the existing thread pattern then carefully turn clockwise to tighten Do not overtighten If a self tapping screw hole becomes stripped repair the screw hole or replace the affected assembly Always remove the toner cartridge before removing or replacing parts Removal and
74. esolution 1 3 print speed 1 3 5 8 5 10 printer buffer memory 5 11 cleaning 4 6 fonts 1 3 memory 1 3 5 8 5 10 memory upgrade 8 5 MEt 5 10 model number 1 4 optional memory 1 3 reset 3 11 standard memory 1 3 warranty 1 14 warranty 1 15 warranty exclusions 1 14 printer comparison memory 1 3 printer dimensions 1 3 1 6 2 4 printer features 1 3 internal typefaces 1 3 memory 1 3 monthly usage 1 3 speed 1 3 printer functions basic 5 3 printer job language PJL 5 11 printer message troubleshooting 7 7 printer messages control panel 7 8 error 7 8 manual feed 7 7 memory error 7 7 paper out 7 7 Ready 7 8 self test 7 8 status 7 8 toner cartridge 7 7 troubleshooting 7 7 printer space requirements 2 4 printer timing 5 19 INTR 5 19 LSTR 5 19 PRNT 5 19 STBY 5 19 WAIT 5 19 printing self test page 3 7 priority of errors 7 7 PRNT printer timing 5 19 product information 1 1 to 1 16 3 1 to 3 12 product overview 1 7 R radio frequency interference RFI B 4 RAM 5 8 described 5 8 random access memory described 5 8 read only memory described 5 8 ready light 3 3 regulatory information B 1 to B 4 related documentation 1 10 to 1 11 remanufactured assemblies 1 10 removal and replacement back cover 6 6 bottom assemblies 6 42 conductive grease 6 20 control panel 6 11 covers and doors 6 6 DC Controller 6 44 delivery assembly 6 13 EP Door 6 8 exit roller assembly 6 12 face up face down lever 6 21
75. essages 7 7 toner 4 8 paper jam detection described 5 18 paper motion control 5 5 paper motion monitoring 5 5 paper path components 7 5 location 5 16 troubleshooting 7 27 paper sensors 5 5 parallel interface described 5 8 parts HPD 1 11 ordering 1 10 8 3 Parts Direct Ordering 8 3 PDO Parts Direct Ordering 1 11 8 3 phone numbers 8 4 SME Support Materials Europe 1 11 Parts 1 10 parts and diagrams 8 1 to 8 26 Parts Direct Ordering 8 3 parts lists 8 3 PDO Parts Direct Ordering 1 11 8 3 phone numbers parts 8 4 photosensitive drum 5 13 check list 7 22 damage 7 13 described 5 13 located 7 23 photosensitive drum cleaning 5 12 to 5 13 photosensitive drum conditioning 5 12 to 5 13 pickup roller assembly 8 18 PJL overview 5 11 PJL Printer Display Language Centronics cabeling 5 11 described 5 11 print environment settings 5 11 two way communication 5 11 power surge 1 15 power control 1 3 power distribution AC 5 6 power save mode 1 3 5 6 power supply system 5 4 preliminary troubleshooting 7 3 print environment settings PJL 5 11 print quality cleaning printer 4 6 transfer roller 4 7 print quality problems 7 14 all blank pages 7 18 background scatter 7 16 black page 7 16 blank page 7 18 character voids 7 16 dropouts 7 17 faded print 7 14 half blank page 7 17 horizontal stripes 7 15 loss of detail 7 17 repetitive defects 7 15 staining 7 14 vertical lines 7 15 vertical white stripes 7 15 print r
76. faces 1 3 standard printer memory 1 3 status messages door open or no EP cartridge 7 8 incompatible memory card 7 8 manual feed 7 8 memory error 7 8 paper jam 7 8 paper out 7 8 Ready 7 8 SleepMode 7 9 STBY printer timing 5 19 supplies 8 5 See alsoaccessories and supplies surge protection 1 15 SW101 12 volt de power shutoff microswitch 5 5 SW101 printer door microswitch 5 5 SW201 engine test microswitch 5 5 T technical assistance 1 12 test engine 3 10 toner 1 10 toner cartridge charging rollers B 3 check list 7 13 cleaning spills 4 8 defective 4 8 described 5 13 drum cleaning 5 12 to 5 13 drum conditioning 5 12 to 5 13 drum rotation check 7 23 faulty image exampes 7 14 image formation 7 13 image formation system 5 13 MSDS B 3 photosensitive drum 5 13 7 13 7 22 to 7 23 printer message 7 7 refilled 7 23 replacement 8 5 weight 7 13 toner cartridge microswitch SW101 5 5 toner safety B 3 tools required 6 4 top assemblies feed assembly 6 39 kick plate 6 35 laser scanner assembly 6 24 paper feed frame 6 30 pickup roller assembly 6 27 separation pad 6 37 solenoid 6 25 transfer roller 6 34 transferring process 5 14 troubleshooting 7 1 to 7 32 drum rotation 7 23 high voltage power supply check 7 24 image defects 7 28 image formation 7 13 LEDs 7 7 paper curl 7 26 paper path 7 27 print quality problems 7 14 printer errors 7 7 troubleshooting checks 7 21 troubleshooting flowchart 7 3 troubleshooting tools 7 27
77. feed assembly 6 39 formatter pca 6 47 fuser exit roller 6 22 fuser pressure plate 6 15 heating element 6 17 internal assemblies 6 11 kick plate 6 35 laser scanner assembly 6 24 main cover and paper input assembly 6 10 memory door 6 9 memory door guide 6 42 motor 6 43 paper exit sensor flag 6 23 paper feed frame 6 30 pickup roller assembly 6 27 pressure roller 6 20 separation pad 6 37 solenoid 6 25 strategy 6 3 subpads 6 38 top assemblies 6 24 transfer roller 6 34 repair philosophy 1 10 repetitive defects 7 15 repetitive image defect ruler 7 28 replaceable cables 8 6 required tools 6 4 requirements environmental 2 5 site 2 1 to 2 6 space 2 4 resetting the printer 3 11 Resolution Enhancement technology 1 3 5 9 described 5 9 resolution print 1 3 REt Resolution Enhancement technology 1 3 5 9 ROM 5 8 character sets 5 8 dot patterns 5 8 S safety toner B 3 scanner drive 5 5 self test engine 3 10 microswitch SW201 5 5 self test page 3 7 sensors 5 17 separation guide assembly 8 22 sequence of operation 5 19 serial number information 1 4 service approach 1 10 service errors 7 7 service or error messages beam error 7 11 engine 7 11 firmware 7 12 formatter 7 12 fuser 7 10 ROM or RAM 7 10 scanner 7 12 site requirements 2 1 to 2 6 SME Support Materials Europe 1 11 solving print quality problems 7 14 space requirements 2 4 specifications electrical 1 6 paper 1 11 printer 1 6 2 3 staining 7 14 standard inter
78. g lenses 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 is sweeping the entire length of the drum and the drum is rotating the entire surface area of the drum can be covered At the end of each sweep the beam strikes the beam detect lens generating the Beam Detect Signal BD The BD signal is sent to the DC Controller where it is converted to an electrical signal used to synchronize the output of the next scan line of data Functional Overview 5 13 G M9IAJ9AQ jeuonouny 5 14 Step 4 Image Developing At this stage of the 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 repelled from the negatively charged non exposed areas Step 5 Image Transferring During the transferring process the toner image on the drum surface is transferred to the paper A positive charge applied to the back of the paper by the transfer roller causes the negatively charged toner on the drum surface to be attracted to
79. gh voltage contact points Clean the high voltage contact points on the toner cartridge and transfer roller See Figures 7 5 and 7 6 Complete a Half Self Test to verify that the image is appearing on the drum See Half Self Test Functional Check later in this chapter If this procedure isn t successful replace the transfer roller Replace the Laser Scanner unit Replace the DC Controller Staining Stains usually appear as small round black dots that occur in the front or the back of a page Sometimes wide inconsistent stains appear The paper may not meet HP s paper specifications for example too moist You may be printing on the wrong side of the paper Try removing the paper from the Paper Input Bin and turning it over The label on many reams of paper has an arrow indicating the print side e The printer may need cleaning See Cleaning Your Printer in Chapter 4 The toner cartridge may be damaged Replace it if maintenance procedures do not improve print quality 7 14 Troubleshooting Bb Bo Bb Bb Bo AaBbEC AaBbCc AaBoc AaBbCc _ AaBoCc AaBbCc AaBbC AciBbXGCc AciBbXCc AciBbCc ACIBOCC AGIBOCC Vertical Lines Sometimes vertically aligned black streaks or smears can appear on successive pages e The toner cartridge may be damaged Replace it The printer may need cleaning See Cleaning Your P
80. here is a flex point Firmly press the left tab inward to release it The right tab will fall out easily Figure 6 4 Figure 6 4 EP Door Assembly Removal 6 8 Removal and Replacement Figure 6 5 Memory Door 1 Unplug the power cord and remove the parallel cable from the back of the printer 2 Remove the toner cartridge 3 Gently tip the printer onto its side so that the Control Panel is on top 4 Carefully pull the door tab out Figure 6 5 callout 1 and away from the printer in a gentle rocking motion Figure 6 5 callout 2 Memory Door Removal Removal and Replacement 6 9 9 juauls9e day pue enou9y Main Cover and Paper Input Assembly Remove the toner cartridge 2 Remove memory door Caution Remove the memory door first The door will break if you remove the Main Cover without removing the memory door Remove the EP Door Assembly Remove the Back Cover Remove the 2 screws from the top of the printer Figure 6 6 callout 1 Grasp the two lower front corners of the printer and pull gently outward to release the front of the Main Cover 7 Lift the cover straight off 8 Remove the Paper Input Assembly Figure 6 6 callout 2 by rotating it forward and lifting it out with firm pressure uo bh Ww Figure 6 6 Main Cover and Paper Input Assembly Removal Note When replacing the Paper Input Assembly make certain that the mylar sheet is positioned between the Inpu
81. hile Hewlett Packard does not prohibit the use of refilled toner cartridges during the warranty period or while under a maintenance contract we do not recommend their use The reasons for this are 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 e Hewlett Packard also cannot predict what the long term reliability effect on the printer is from using different toner formulations found in refilled cartridges e Hewlett Packard has no control over the actual print quality of a refilled toner cartridge The print quality of HP LaserJet toner cartridges influences the customer s perception of the printer Repairs resulting from the use of refilled toner cartridges are not covered under the HP warranty or maintenance contract Recycling Toner Cartridges In order to reduce waste Hewlett Packard has adopted a recycling program for used toner cartridges Plastics and other material are recycled Cartridge components that do not wear out are reused HP pays the shipping costs from the user to the recycling plant For each cartridge returned HP donates one U S dollar to be shared by the Nature Conservancy and the National Wildlife Federation To join this recycling effort follow the instructions inside the toner cartridge box eoueuojuieyw U Printer Maintenance 4 5 Cleaning the Printer To maintain the print quality thoroughly
82. his chapter 12 V Shutoff Switch The 12 volt DC power shutoff switch Switch 101 located on the top of the printer is activated by the printer door The front door must be closed before the printer can resume printing Engine Test Switch The Test Print Switch 201 located on the DC Controller is activated manually through an access hole at the front of the printer This switch causes the print engine to perform a self test diagnostic which bypasses the Formatter PCA and prints a full page of black vertical lines This test is useful for troubleshooting printer problems because it isolates the print engine from the Formatter PCA See Chapter 7 Troubleshooting to learn more about how to perform an engine test Motor The Motor is controlled by the DC Controller PCA The Motor provides all of the printer s paper movement Functional Overview 5 5 G M9IAJ9AQ jeuonouny 5 6 Power System on DC Controller PCA The AC DC and high voltage power supply circuits are all contained within the DC Controller PCA 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 fusing assembly s heating element DC Power Distribution The DC power distribution circuitry located on the DC Controller PCA distributes 5 V DC and 12 V D
83. idriv screwdrivers Back Cover Removal 1 of 2 Back Cover Removal 2 of 2 EP Door Assembly Removal Memory Door Removal Main Cover and Paper Input Assembly Removal Control Panel Removal Exit Roller Removal Delivery Assembly Removal 1 of 2 Delivery Assembly Removal 2 of 2 Fuser Pressure Plate Removal Fuser Pressure Plate Replacement Heating Element Removal 1 of 3 Heating Element Removal 2 of 3 Heating Element Removal 3 of 3 Pressure Roller Removal Face Up Face Down Lever Replacement Fuser Exit Roller Removal Paper Exit Sensor Flag Replacement Laser Scanner Assembly Removal Solenoid Removal 1 of 2 Solenoid Removal 2 of 2 Pickup Roller Assembly Removal 1 of 2 6 10 6 11 6 12 6 13 6 14 6 15 6 16 6 17 6 18 6 19 6 20 6 21 6 22 6 23 6 24 6 25 6 26 6 27 Figure 6 24 Pickup Roller Assembly Removal 20f2 6 28 Figure 6 25 Paper Pickup Roller Assembly Replacement Inside Front View 6 29 Figure 6 26 Paper Feed Frame Removal 10f4 6 30 Figure 6 27 Paper Feed Frame Removal 20f4 6 31 Figure 6 28 Paper Feed Frame Removal 30f4 6 32 Figure 6 29 Paper Feed Frame Removal 40f4 6 33 Figure 6 30 Transfer Roller Guide amp Transfer Roller Removal Inside Back View 6 34 Figure 6 31 Kick Plate Removal o 6 35 Figure 6 32 Kick Plate Spring Replacement 6 36 Figure 6 33 Separation Pad Remo
84. ies 8 10 8 12 8 14 control panel 6 11 delivery assembly 6 13 exit roller assembly 6 12 face up face down lever 6 21 fuser exit roller 6 22 fuser pressure plate 6 15 heating element 6 17 pressure roller 6 20 internal typefaces 1 3 INTR printer timing 5 19 J Japanese VCCI Statement B 4 L laser and scanner drive 5 5 laser drive 5 5 laser safety information B 1 Laser Safety USA B 1 laser statement Finland B 2 loss of detail 7 17 LSTR printer timing 5 19 M main wiring diagram 7 29 maintenance 4 1 to 4 8 Material Safety Data Sheet MSDS B 3 memory buffer 5 11 MEt 1 3 5 10 printer 1 3 5 8 5 10 RAM 5 8 ROM 5 8 upgrades 8 5 memory cards DRAM installation 6 5 memory enhancement technology 5 10 described 5 10 MEt 5 10 microswitch SW101 5 5 SW201 5 5 model number 1 4 model printer 8 3 motor described 5 5 MSDS B 3 N North American Response 1 13 O operating environment 2 3 operation basic sequence 5 19 ordering related 1 10 ordering consumables 8 4 ordering parts 1 10 8 3 output components 8 14 overcurrent dc protection circuitry 5 6 devices 5 6 protection 5 6 overvoltage devices 5 6 Index 2 protection 5 6 ozone emission B 3 P page protect described 5 11 disabled 5 11 page buffer 5 11 PCL printing 5 11 page usage monthly 1 3 paper capacities 1 3 paper curl 7 26 paper feed system clutches and sensors 5 17 described 5 15 paper path 5 16 7 5 paper jam DC controller 5 18 m
85. inating the printer Never expose the toner cartridge to direct sunlight or to room light for more than a few minutes Bright light and direct sunlight can permanently damage a toner cartridge The C3906F toner cartridge is designed specifically for use in the environmental conditions of the Asia Pacific region and is only available in that region Site Requirements 2 5 e sjueuiauinbou SUS Figure 2 2 Toner Cartridge Handling Suggestions Before installing a cartridge distribute the toner evenly by rotating the cartridge back and forth five to six times See Figure 2 2 Repeat this action when toner begins to run low Toner Cartridge Distribution Do not touch the surface of the photosensitive drum in the cartridge Protect the drum from light and contamination Do not expose the cartridge to unnecessary vibrations or shock Do not expose the photosensitive drum to strong light Blurred areas on the page may indicate that the drum has been exposed to light for too long This causes permanent damage to the photosensitive drum Replace the cartridge Never manually rotate the drum especially in the reverse directions internal damage and toner spills may result Do not install the toner cartridge in the printer for shipping 2 6 Site Requirements Operating Overview Contents Using the Control Panel o o e e 3 3 Control Panel Layout o o e e 3 3 LED Lights y oo o A a AR
86. iption column to ensure that the part number selected is for the correct model of printer Ordering Parts All standard part numbers listed are stocked and may be ordered from HP s Support Materials Organization SMO or Support Materials Europe SME Hewlett Packard Co Support Materials Organization 8050 Foothills Blvd Roseville CA 95678 Parts Direct Ordering 1 800 227 8164 U S Only Hewlett Packard Co Support Materials Europe Wolf Hirth Strasse 33 D 7030 B blingen Germany 49 7031 14 2253 You can also contact HP at 916 783 0804 to find out part numbers for the LaserJet 5L and 6L Contact your local HP Parts Coordinator for other local phone numbers Parts and Diagrams 8 3 8 sweibeig pue syed Ordering Consumables Consumables and accessories such as those listed on Table 8 T may be ordered from Hewlett Packard The phone numbers are U S 1 800 538 8787 Canada 1 800 387 3154 Toronto 516 671 8383 United Kingdom 0734 441212 Germany 0130 3322 Contact your local HP Parts Coordinator for other local phone numbers Note Parts that have no reference designator or part number are not field replacement parts and cannot be ordered through SMO 8 4 Parts and Diagrams Note Table 8 1 Note Accessories and Supplies The following items are available through your local authorized HP dealer To find a dealer near you or if your dealer is temporarily out of stock call the HP Customer
87. is and J206 of the DC Controller PCA 3 Remove the connector from J102 of the DC Controller See Figure 6 14 Measure the resistance between pins one and two of the cable This procedure will measure the continuity of the ceramic heating element Normal resistance is 30 ohms 10 ohms If no resistance is measured replace the heating element 4 Remove the thermistor temperature feedback connector See Figure 7 3 Measure the resistance between pins one and two Normal resistance is 440K ohms 30K at 20 degrees C If the resistance is not measured replace the heating element 5 If the resistance readings are correct yet the error persists replace the DC Controller Figure 7 3 Table 7 4 Bunoouse qnoJ Z Heating Element Resistance Check Service and Error Messages Continued 2 of 3 Beam Error There are a number of causes 1 Power cycle the printer by unplugging the printer for this error and some of the causes may and plugging it back in be transient They may disappear 2 Make certain the Laser Scanner Assembly is correctly seated on the printer chassis 3 Replace the Laser Scanner cable J208 on the DC Controller 4 Replace the Laser Scanner Assembly 5 Replace the DC Controller PCA Engine Error The formatter and engine 1 Power cycle the printer by unplugging the printer are not communicating a
88. isely positioned on the page The feed assembly drive rollers then advance the paper to the transfer area where the toner image on the photosensitive drum is transferred to paper After the image is transferred the paper enters the fusing assembly where heat from the fuser and pressure from the Pressure Roller permanently bond the toner image to paper The Paper Exit Sensor PS201 determines that paper has successfully moved out of the fusing area The fusing assembly exit rollers deliver paper to either the Output Paper Bin or the Front Output slot depending upon the position of the Face up Face down lever Functional Overview 5 15 G M9IAJ9AQ jeuonouny Figure 5 5 shows a simplified paper path and the locations of the photosensors and rollers Figure 5 5 Manual Input Slot Paper Paper Output Bin input Bin Toner Cartridge N Paper Out Sensor Delivery PS202 Roller Front J Roller Output Paper Slot co Registration Paper Exit Sensor Sensor PS203 PS201 Main Heating Element Pressure Roller Transfer Roller Motor Simplified Paper Path 5 16 Functional Overview Figure 5 6 shows the locations of the photosensors switches solenoid and other important printer elements Table 5 1 describes the function of each photosensor and the solenoid Pick up Roller Assembly Laser Scanner Heating Element 110v 220v DC Controller 110v 220v SW201 PS201 Figure 5 6 PS204 5L only Formatter
89. l Resolution Enhancement RED o ee ee ee ee EconoMode Memory Enhancement technology MEt Enhanced I O Page Protect p ao 2 orina REOR OR EUR eG ck Rn e adhe PJL Overview Image Formation System Toner Cartridge Step 1 Drum Cleaning Step 2 Drum Conditioning Step 3 Image Writing Step 4 Image Developing Step 5 Image Transferring Step 6 Image Fusing Paper Feed SysteM oo oocor o o o o o o oo 9 o e Paper Jam Detection Basic Sequence of Operation Functional Overview 5 1 5 2 Functional Overview Figure 5 1 Basic Printer Functions This chapter presents a generalized functional overview of the printer and the printing processes The following printer systems are discussed DC Controller System Power System Formatter System Image Formation System Paper Feed System Laser Scanner System Figufe 5 T 1s a generalized block diagram of the printer Scanning Mirror DC Controller Paper Output Bin 5 o c 5 an a z pe a e c 2 T o o o a 2 G o S jo wn Front Output Slot Fusing Assembly Pick Up Feed System Printer Functional Block Diagram Functional Overview Laser i DC Controller Power System i Diode i 5 3 G M9IAJ9AQ jeuonouny Figure 5 2 5 4 DC Controller Power System The DC Controller PCA coordinates all print engine activities drives the laser and coordinates print data from the Formatter PCA with the image formation process
90. lowing table Paper Curl Troubleshooting Possible Cause Recommended Action Paper Path Try using the front output slot to shorten and straighten the paper path Paper Surface The recommended printing surface of the page is usually marked on the end of a ream of paper by a small arrow and the phrase print this side first If the incorrect side was face up turn the paper over Load paper into the Paper Input Bin with the recommended printing surface facing the front of the printer Paper Storing and Handling Over time paper assumes the characteristics of its storage environment In a humid environment paper absorbs moisture In a dry environment paper loses moisture Paper with higher moisture contents will tend to curl more Evaluate the storage conditions of the paper 7 26 Troubleshooting Paper Type All paper is manufactured differently texture moisture content drying processes composition etc Change the type of paper being used and re evaluate the paper if curl results Figure 7 7 Troubleshooting Tools Paper Path Check If paper is not being picked up or is not moving through the paper path you may want to observe all of the paper motion activities Overriding PS204 5L or SW101 6L 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 PS204 and SW101
91. n each end of the Transfer Roller guide Using a small flathead screwdriver carefully pry each tab outward to release it Figure 6 30 3 Roll the released portion of the guide up To remove the Transfer Roller Guide pull it off each end of the Transfer Roller shaft Figure 6 30 Transfer Roller Guide amp Transfer Roller Removal Inside Back View 4 This exposes the Transfer Roller WARNING Do not touch the Transfer Roller or otherwise allow it to be contaminated 5 Working from the front of the printer gently pry the gear side of the Transfer Roller out first then slide the other side out of its socket To reinstall Some of the HP LaserJet 5L Printers contain a small metal spring under the Transfer Roller Guide Upon reinstallation with these models the small metal spring should rest under the Transfer Roller Guide 6 34 Removal and Replacement Kick Plate Caution Be careful working with the Kick Plate and Separation Pad The spring underneath the Kick Plate may stay attached to the Kick Plate but it is also likely to spring away from the Kick Plate Place the spring aside for Separation Plate disassembly 1 Remove the Printer Covers and the Pickup Roller Assembly Figures 6 23 and 6 24 2 Press the Separation Pad Figure 6 31 Allow the Kick Plate to pivot upward a spring underneath will push it up Lift the Kick Plate off its mounting pins Figure 6 31 Kick Plate Removal Removal and Replacement
92. ncy of Consumables llle 4 3 Toner Cartridge Life e e a A 4 4 Saving Toner with EconoMode llle 4 4 Refilled Toner Cartridges oo e e 4 5 Recycling Toner Cartridges o e e o 4 5 Cleaning the Printer o ee ee 4 6 Cleaning Printer Components o e e 4 7 Cleaning Spilled Toner o o e 4 8 Printer Maintenance 4 1 4 2 Printer Maintenance Table 4 1 Life Expectancy of Consumables Always inspect the components listed in Table 4 1 for wear when servicing the printer Replace these components as needed based on printer failures or wear not strictly on usage Life Expectancy of Consumables Description HP LaserJet 5L HP LaserJet 6L Est Life Remarks Part Number Part Number pgs Toner Cartridge C3906A C3906A 2 500 When print becomes user replaceable faint shake cartridge to distribute remaining toner Transfer Roller RF5 1534 000CN RF5 1534 000CN 50 000 May affect print quality and or paper movement R May affect paper movement Separation Pad amp RY7 5008 000CN RY7 5008 000CN 50 000 Sub pads Heating Element RG5 1964 000CN RG5 3459 000CN 50 000 May affect print quality 100 120 V 50 60 Hz and or paper movement Look for marks on 220 240 V 50 Hz RG5 1965 000CN RG5 3463 000CN pressure roller or upper Paper Pickup G5 1940 000CN RG5 3486 000CN 50 000 Look for glazing and or
93. nd assembly must be removed to access any fuser components Delivery Assembly Removal 1 of 2 Removal and Replacement 6 13 9 jueuuje2ejdou pue jenow y 3 Use the magnetic screwdriver to remove the 2 screws Figure 6 10 callout 1 Once the screws have been removed rotate the rear of the Delivery Assembly up and forward and lift it out of the printer Figure 6 10 Delivery Assembly Removal 2 of 2 Note Upon reinstallation the tabs on the front end of the Delivery Assembly must fit under the sheet metal fuser plate below to correctly reseat the Delivery Assembly 6 14 Removal and Replacement Figure 6 11 Fuser Pressure Plate 1 Remove Printer Covers and Delivery Assembly Figures 6 9 and 6 10 2 Remove the 2 screws Figure 6 11 callout 1 3 Press the Fuser Plate retainer clips out to release the Pressure Plate Figure 6 11 callout 2 4 Rotate the plate around and toward the back and lift up to remove it Figure 6 11 callout 3 Fuser Pressure Plate Removal Removal and Replacement 6 15 9 juaus9e day pue enousy To reinstall The Fuser Pressure Plate is kept in place by four locking mechanisms in each corner Place the rear slits in the plate over the rear brackets that hold the Fusing Assembly Figure 6 12 callout 1 Lower the plate over the retaining clips pressing on both sides of the Fuser Pressure Plate Figure 6 12 callout 2 It is important that
94. nd plugging it back in If this doesn t clear the error 2 Reseat Formatter to DC Controller PCA 3 Replace the Formatter PCA 4 Replace the DC Controller PCA Troubleshooting 7 11 Table 7 4 Service and Error Messages Continued 3 of 3 Scanner Error Caused by a scanner 1 Power cycle the printer by unplugging the printer malfunction and plugging it back in 2 Ensure condensation caused by moving the printer from a cold to a warm environment hasn t occurred Allow the printer to acclimate to the warmer room 3 Verify the two Laser Scanner Assembly connectors are firmly seated 4 Replace scanner cable J207 on the DC Controller PCA 5 Replace the Laser Scanner Assembly 6 Replace the DC Controller PCA Formatter Error 1 Power cycle the printer by unplugging the printer and plugging it back in 2 Disconnect the parallel I O cable and try running a printer self test Reconnect the parallel cable if the self test is successful and try host printer communications again 3 If the error persists replace the Formatter PCA Firmware Error Note the LED pattern and the BiTronics error code Contact HP technical support with this information as well as a description of what data was sent the errors encountered prior to the firmware error the condition of the printer prior to the error and any other information that may help isolate the error
95. nter for Devices and Radiological Health CDRH B 1 character voids 7 16 circuit protection 5 6 class 1 laser product B 1 class B digital device B 4 cleaning printer 4 6 spilled toner 4 8 clutches and sensors 5 17 common hardware 8 6 consumables ordering 8 4 printer 1 10 control panel 1 3 described 5 9 features 1 3 3 3 layout 3 3 messages 7 8 self test for printer errors 7 8 settings 5 9 using 3 3 covers 8 7 covers and doors 8 8 back cover 6 6 EP Door 6 8 main cover and paper input assembly 6 10 memory door 6 9 CPU 5 8 CPU printer 5 8 D data light 3 3 DC Controller 8 16 diagram 7 6 DC Controller system 5 5 DC power distribution circuitry 5 6 explained 5 6 defect ruler repetitive image 7 28 delivery assembly 8 24 Department of Health and Human Services DHHS B 1 DHHS B 1 diagrams 8 3 dimensions printer 1 3 1 6 2 4 distribution system AC 5 6 documentation related 1 10 to 1 11 doors 8 7 DRAM installation 6 5 dropouts 7 17 drum photosensitive 5 13 7 13 7 22 to 7 23 drum cleaning process described 5 12 to 5 13 drum conditioning described 5 12 to 5 13 drum rotation functional check 7 23 E EconoMode 1 3 5 10 print speed 5 10 vs normal mode 5 10 electrical specifications 1 6 emissions acoustic 1 6 engine test 3 10 7 21 printing 7 21 engine test button location 7 21 engine test microswitch SW201 5 5 environment operating 2 3 environmental requirements 2 5 error light 3 3 unclearable 7 9
96. nternal Components 3 of 3 8 14 Figure 8 6 DC Controller Formatter and Cables 8 16 Figure 8 7 Pickup Roller Assembly 8 18 Figure 8 8 Feed Assembly o o 8 20 Figure 8 9 Separation Guide Assembly 8 22 Figure 8 10 Delivery Assembly o llle 8 24 Figure B 1 VCCI Statement Japan o B 4 List of Tables Table 1 1 Printer Features 000000 eee Table 1 2 Paper Capacities and Sizes o o Table 1 3 Performance Specifications o o e Table 1 4 Electrical Specifications o o Table 1 5 Acoustic Emissions a Table 1 6 Related Documentation Table 2 1 Environmental Requirements Table 2 2 Printer Dimensions 0 02 00 0 02 eae Table 3 1 Indicator Lights 1 of 2 Table 3 1 Indicator Lights Continued 2 of 2 Table 3 2 Front Panel Button Usage o oo Table 4 1 Life Expectancy of Consumables Table 4 2 Cleaning Printer Components Table 5 1 Solenoid and Photosensors Table 5 2 PrinterTiming e e Table 7 1 Printer Status Messages 1 of 2 Table 7 2 Printer Status Messages Continued 2 of 2 Table 7 3 Unclearable Error
97. o Qty Face up Face down Switch Parts and Diagrams 8 9 8 sweibeig pue syed e o o A 5 D iL Internal Components 1 of 3 10 Parts and Diagrams 8 Table 8 4 Internal Components 1 of 3 Ret LaserJet 5L Part No LaserJet 6L Part No 16 RG5 1984 000CN RG5 3453 000CN EP Cover Interlock 17 RF5 1521 000CN RF5 2367 000CN Exit Roller neszowowcw RG5 9404 0000N 19 C3941 69003 n a ENN 20 RB1 7385 000CN RB1 7385 000CN Laser Scanner Exchange Ground Clip Scanner 502 XB6 7300 607CN XB6 7300 607CN Screw TP M3x6 501 XB6 7300 807CN XB6 7300 807CN Screw TP M3x8 503 XA9 0267 000CN XA9 0267 000CN Screw TP M3x6 Parts and Diagrams 8 11 8 sweibeig pue syed Figure 8 4 Dni oo o e LL e e mn Internal Components 2 of 3 12 Parts and Diagrams 8 Table 8 5 Internal Components 2 of 3 met LaserJet 5LPart No LaserJet 6LPart No Qty Control Panel Cable Guide 2 3 4 5 10 11 12 501 RB1 7130 000CN RB1 7130 000CN Fuser Cable Guide RB1 7234 000CN RB1 7234 000CN Cap RB1 7302 000CN RB1 7302 000CN Cap XA9 0724 000CN XA9 0724 000CN 3 Screw RS M3x8 XA9 0855 000CN XA9 0855 000CN 2 Screw RS M3x8 with star washer RB1 7176 000CN RB1 7176 000CN Mylar Guide RB1 7305 000CN RB1 7305 000CN 1 O Sheet Metal Screw Tapping Panhead XB4 7401 007CN XB4 7401 007CN 3 M4x10 502 XB1 1300 807CN XB1 1300 807CN Screw PH M3
98. o verify that the print engine is functioning correctly The Formatter PCA is completely bypassed during an engine test Consequently this test is useful for isolating engine printer problems The engine test prints a full page of vertical lines down the entire printable area This page is useful for checking and adjusting registration Note Perform the engine test with the printer covers in place as shown in Figure 3 6 Refer to Engine Test in Chapter 7 for the engine test procedure Figure 3 3 Engine Test Printout Engine Test Button 3 10 Operating Overview Resetting the Printer Resetting the printer accomplishes the following Clears all data from the printer s memory including unprinted data downloaded fonts and macros Stops any printing that is taking place and ejects the page Removes some error conditions Resets the printer to its factory default settings To Reset the Printer Press and hold the Front Panel Button until the three control panel lights blink quickly in succession about 5 seconds then let go of the button After resetting the Ready bottom Light will remain lit if there are no printer errors Make sure there is paper in the printer or the error light will remain on Operating Overview 3 11 uoneanDiyuo5 pue uoinejeisu 3 12 Operating Overview Printer Maintenance Contents Life Expecta
99. oller Use a dry lint free cloth DO NOT TOUCH with your fingers For location see Figure 6 30 Separation Pad Use a dry lint free cloth For location see Figure 6 31 Delivery Assembly Use a water dampened lint free cloth For location see Figure 6 10 Static Eliminator Teeth Use compressed air See Figure 4 2 on the following page for static eliminator teeth location eoueuojuieyw U Printer Maintenance 4 7 Figure 4 2 Al Ci E E 4414114 7 A A U a Id EA IE Static Eliminator Teeth located in front of the transfer roller Cleaning Spilled Toner Defective toner cartridges can develop leaks In addition after a paper jam has occurred there may be some toner remaining on the rollers and guides inside the printer The pages that print immediately after the jam may pick up this toner Clean spilled toner with a cloth slightly dampened in cold water Do not touch the Transfer Roller with the damp cloth or with your fingers Do not use a vacuum cleaner unless it is equipped with a micro fine particle filter Note If toner gets on your clothing use cold water to remove it Hot water sets toner stains into fabric 4 8 Printer Maintenance Functional Overview Contents Basic Printer Functions DC Controller Power System Print Engine Control System Power System on DC Controller PCA Formatter System CPU Read Only Memory ROM Random Access Memory RAM Parallel Interface Control Pane
100. or from Switch 101 Figure 6 26 callout 3 Connector from Front Control Panel Figure 6 26 callout 4 Figure 6 26 Paper Feed Frame Removal 1 of 4 6 30 Removal and Replacement Figure 6 27 4 Release the catch on the control panel cable guide by using the small flathead screwdriver to push on the tab Figure 6 27 Then slide the guide off Paper Feed Frame Removal 2 of 4 Removal and Replacement 6 31 9 juauls9e day pue enou9y 5 Remove the self tapping screw from the back sheet metal plate and lift it off Figure 6 28 callout 1 6 Remove the 4 hex head screws from the Paper Feed Frame Figure 6 28 callout 2 Figure 6 28 Paper Feed Frame Removal 3 of 4 6 32 Removal and Replacement Figure 6 29 7 Release the sensor unit connector Figure 6 29 Paper Feed Frame Removal 4 of 4 8 Verify that all cables are clear of the frame and pull the frame straight back to remove it To reinstall The Paper Feed Frame may be easier to reinstall if you place the printer on its front so that you can apply pressure while putting the screws back in place Removal and Replacement 6 33 9 juauls9e day pue enousy Transfer Roller Guide amp Transfer Roller 1 Remove the Printer Covers Pickup Roller Assembly Figures 6 23 through 6 25 and Paper Feed Frame Figures 6 26 through 6 29 2 Looking at the back of the printer note the two small hook shaped release tabs o
101. orted and cross referenced here by part number and name Regulatory Information Here are required statements regarding RFI and laser safety Service Notes Service Notes for HP LaserJet 5L concerning paper jams appear here Subject Index Use the subject index to quickly locate any information in the manual List of Figures Figure 1 1 Figure 1 2 Figure 1 3 Figure 1 4 Figure 1 5 Figure 2 1 Figure 2 2 Figure 3 1 Figure 3 2 Figure 3 3 Figure 4 1 Figure 4 2 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 5 6 Figure 5 7 Figure 5 8 Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 6 5 Figure 6 6 Figure 6 7 Figure 6 8 Figure 6 9 Figure 6 10 Figure 6 11 Figure 6 12 Figure 6 13 Figure 6 14 Figure 6 15 Figure 6 16 Figure 6 17 Figure 6 18 Figure 6 19 Figure 6 20 Figure 6 21 Figure 6 22 Figure 6 23 HP LaserJet 5L Model and Serial Numbers HP LaserJet 6L Model and Serial Numbers Front Side Views of the Printer Front Door Assemblies Back View of the Printer Printer Space Requirements Toner Cartridge Distribution Self test Page for HP LaserJet 5L Self test Page for HP LaserJet 6L Engine Test Button Five Percent Text Coverage Static Eliminator Teeth Printer Functional Block Diagram DC Controller Loads EconoMode vs Normal Mode Image Formation Block Diagram Simplified Paper Path Solenoid and Sensors General Timing Diagram HP LaserJet 5L General Timing Diagram HP LaserJet 6L Phillips and Pos
102. osues Jaded dn xoig ABLS 1G09uOS aifqeseduo abed usamog Je1u02 amnjesedway jug y L ez it se LOONS piousjos dn x id LOS 100w SULEDS LOOW Jow uen 301 122358 DNAS TTVOLLESA 1Nudg reuBrs 1 NIGd GOZH sereey Sung e2usnbeg puooes yun Figure 5 8 A NO 190g General Timing Diagram HP LaserJet 6L 5 21 Functional Overview 5 22 Functional Overview Removal and Replacement Contents Removal and Replacement Strategy Required Tools Installing Memory Cards DRAM Covers and Doors Back Cover o ooo EP Door Assembly Memory Door Main Cover and Paper Input Assembly Internal Assemblies Control Panel Exit Roller Assembly Delivery Assembly Fuser Pressure Plate Heating Element Pressure Roller Face Up Face Down Lever Fuser Exit Roller Assembly Paper Exit Sensor Flag Top Assemblies Laser Scanner Assembly Solenoid lll een Pickup Roller Assembly Paper Feed Frame sss Transfer Roller Guide amp Transfer Roller Kick Plate Separation Pad Subpads ooo o Feed Assembly Bottom Assembli
103. out 6 seconds Is the Front Panel functional Is an Error displayed Yes No When the AC power is first applied to the printer Both the printer motor and the laser scanner motor rotate for 6 seconds e All of the LEDs illuminate for one second the Ready LED will illuminate after 3 seconds If no error message is displayed the Printer Door is firmly closed and the toner cartridge is installed but the motor does NOT rotate when AC power is applied to the printer 1 Verify that AC power is present at the input power receptacle and that the power cord is firmly inserted into the printer 2 Verify that FU102 is not open See Figure 7 2 3 Verify that motor connector J1 is seated into J401 of the DC Controller See Figure 7 2 4 Verify that the motor is correctly mounted to the printer chassis 5 If all of these conditions are correct replace the DC Controller PCA and or the motor If the Control Panel is not functional 1 Verify that the Control Panel connector J9 is seated into both the Control Panel and the Formatter PCA at J3 See Figure 7 2 2 Verify that the Formatter PCA is firmly seated into the DC Controller PCA 3 Perform an Print Engine Test See Figure 7 4 4 If the engine test is successful replace the Control Panel first then if necessary the Formatter PCA 5 If the engine test is not successful replace the DC Controller PCA If the control p
104. pe from http www2 hp com In Japan printer drivers may be obtained from ftp www jpn hp com drivers Korea www hp co kr Taiwan www hp com tw with a local driver website of www dds com tw HP Bulletin Board Service Our electronic download service provides convenient access to HP printer drivers updated HP printer software product information and troubleshooting hints Dial 208 344 1691 U S and Canada and set your communication software to N 8 1 European Bulletin Board Service numbers are listed at http www2 hp com Taiwan 886 2 923 3233 Korea HITEL or CHOLIAN Go HPK Australia 613 9890 0276 New Zealand 649 356 3660 America OnLine America OnLine Bertelsmann available in France Germany and UK Printer drivers updated HP printer software and support documentation are available to help you answer your HP product questions Use Keyword HP to start your tour CompuServe Printer drivers updated HP printer software and interactive sharing of technical information with other members are available on CompuServe s HP User s forums GO HP or call 800 524 3388 and ask for representative 51 CompuServe is also available in the UK France Belgium Switzerland Germany and Austria 970 339 7009 Mail Hewlett Packard 970 330 7655 PO Box 1754 Greeley CO 80632 USA Fulfill Plus 65 740 4477 Singapore Malaysia Indonesia Hong Kong Call 612 565 6099 Call 800 446 0522 U S or 800 387 8164
105. r guide on the printer chassis Press each tab inward Figure 6 38 4 Pull the memory door guide out Figure 6 38 Memory Door Guide Removal 6 42 Removal and Replacement Figure 6 39 Motor 1 Remove the Printer Covers 2 Remove the motor connector Figure 6 39 callout 1 3 Remove the memory door guide to expose the two motor screws 4 Remove the motor screws Figure 6 39 callout 2 5 Lift the Motor out Motor Removal Removal and Replacement 6 43 9 juawa9e doy pue PAOUJ9H DC Controller Remove the Printer Covers Disconnect the motor connector from the motor Figure 6 39 callout 1 Disconnect the Solenoid connector from the DC Controller Figure 6 22 callout 1 Remove the back sheet metal plate and disconnect the PS202 PS204 connector Figure 6 29 5 Remove the AC Cable cover and disconnect the AC Cable from the DC Controller Figures 6 13 and 6 14 6 Tip the printer on its top with the front facing you 7 Remove the 4 screws Figure 6 40 callout 1 One of the screws is a grounding screw The location of the grounding screw is marked by a star etched into the bottom of the DC Controller Ao Ny E Note Make certain when you reinstall the DC Controller that the grounding screw with the washer is replaced in the same location Figure 6 40 bame siau OU w DC Controller Removal 1 of 3 6 44 Removal and Replacement Caution
106. r printer driver You may need to install additional memory in your printer See Chapter 6 for memory installation instructions Check your printer driver help screens for suggestions specific to your driver s settings Curled or Wrinkled Sheets Media is curled or wrinkled when using the Paper Output Bin Verify that the media you are using meets paper specifications See the HP LaserJet 5L User s Manual or the HP LaserJet Printer Family Paper Specifications Guide e Turn the paper over Use the Front Output Slot by pushing the Paper Path Lever to the lower position This provides the straightest paper path Use Paper Input Support located behind the Paper Input Tray Troubleshooting 7 17 AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc Blank Page Occasional A page is completely blank If you get occasional blank pages e Make sure your page length and margins are set correctly for the paper size you use If you are printing on small media and your page is blank try printing on larger media to see where the image is printing Adjust margins accordingly e Some sharing devices or networks may generate a blank page as a separator Try connecting the printer directly to the computer e Your printer may be feeding two or more pages at once because the paper is difficult to separate Remove the paper from the Paper Input Bin and align the edges of the paper Although fanning the paper is no
107. rinter in Chapter 4 Replace the heating element Horizontal Stripes Sometimes horizontally aligned black streaks or smears can appear e The toner cartridge may not be installed properly Remove the cartridge and reinsert it The toner cartridge may be defective Replace it e If the printer still has print quality problems the printer may require cleaning Replace the heating element Bunoouse qnoJ L Repetitive Defects Sometimes light character shadows or repetitive marks appear on the page Refer to the Repetitive Image Defect Ruler later in this chapter The printer may need cleaning See Cleaning Your Printer in Chapter 4 The toner cartridge may be damaged causing a repetitive black flaw on every printout Replace the toner cartridge e If using transparencies use a different type of overhead transparency Your paper texture may be too coarse Try changing to a paper with a smoother finish The photosensitive drum of the toner cartridge may have been over exposed to bright light causing repetitive defects usually a blurred area Replace the toner cartridge Vertical White Stripes The toner cartridge may be getting low on toner Gently shake the cartridge to redistribute the toner or replace the cartridge The printer may need cleaning See Cleaning Your Printer in Chapter 4 You may also need to clean the mirror on the laser scanner by blowing air through the scanner
108. rotector Improper site preparation and maintenance Use of non HP toner cartridges see explanation or DRAM JEDIA memory cards The use of non Hewlett Packard toner cartridges does not affect either the warranty or any maintenance contract purchased from Hewlett Packard However if an HP LaserJet printer failure or printer damage is found to be directly attributable to the use of any non HP product the repair will not be covered under the warranty or HP maintenance contract Hewlett Packard cannot recommend use of non HP toner cartridges either new or remanufactured because they are not HP products and Hewlett Packard cannot influence or control their quality Operation of the printer beyond the limit of its duty cycle printing more than the equivalent of 4 000 single sided pages per month on the HP LaserJet 5L or more than the equivalent of 6 000 single sided pages per month on the HP LaserJet 6L shall be deemed printer abuse and all repairs thereafter will be billed on a time and materials basis 1 14 Product Information Note If you are using a mechanical switchbox ensure that it is equipped with a surge protector Damage to your printer could occur from the use of unprotected mechanical switchboxes The warranty period begins either on the date of delivery or where the purchase price includes installation by Hewlett Packard on the date of installation Warranty Limitations The warranty set forth above is exclusive
109. sembly 6L RG5 3478 000CN 8 10 RG5 3479 000CN 8 10 RG5 3485 000CN 8 8 RG5 3486 000CN 8 7 RG5 3488 000CN 8 2 RG5 3491 000CN 8 2 RG5 3494 000CN 8 3 RG5 3506 000CN DC Controller PCA 110 V 6L 86 DC Controller PCA 220 V 6L 86 Rossoomes Do conver Pca case esoray e0 Rassen Seer One 6 es CEC TI ee arsenosoo0cn Fe we ow j e Table A 2 Numerical Parts List continued Eum e T Vorone Jeemieew 99 Messi Fue 101 z0y 20 XA9 0326 000CN Screw DC Controller PCA 5L aossen se 0 Govier POR ACTA reas oocn seen surwasien ea XA9 0890 000CN Screw DC Controller PCA 6L EE Parts Index A 11 A 12 Parts Index Regulatory Information WARNING Laser Safety U S A The Center for Devices and Radiological Health CDRH of the U S Food and Drug Administration implemented regulations for laser products manufactured since August 1 1976 Compliance is mandatory for products marketed in the United States This printer is certified as a Class 1 laser product under the U S Department of Health and Human Services DHHS Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968 Since radiation emitted inside this printer is completely confined within protective housings and external covers the laser beam cannot escape during any phase of normal user operation Never operate or service the printer wi
110. serJet 6L Part No Qty 2T RG5 2013 000CN RG5 3475 000CN Separation Guide Assembly RB1 7276 000CN RG5 3476 000CN Face Up Face Down Lever RB1 7289 000CN RB2 1690 000CN Fuser Roller Bushing RF5 1522 000CN RF5 2368 000CN Fuser Exit Roller Assembly Parts and Diagrams 8 23 8 sweibeig pue syed o T co o ES 5 iL Delivery Assembly 8 24 Parts and Diagrams Table 8 11 RG5 2015 000CN RG5 3479 000CN Spur Assembly Outside 7 RG5 2014 000CN RG5 3478 000CN Spur Assembly Inside EN RB1 7287 000CN RB1 7287 000CN Delivery Spring 2 Parts and Diagrams 8 25 8 sweibeig pue syed 8 26 Parts and Diagrams Parts Index Parts Index A 1 Parts Index Table A 1 Alphabetical Parts List PartNo Fi AC Cable Cover 6L 6L Back Grounding Clip ap ap Case Grounding Metal Clutch Control Panel Cable Guide Control Panel PCA Assembly Control Panel PCA Cable 5L RG5 2036 o00cN 86 es es Be es es es ss es es es ss ato Control Panel PCA Cable 6L DC Controller Fuse FU101 110 V DC Controller Fuse FU101 220 V DC Controller FUse FU102 110 V DC Controller PCA 110 V 5L DC Controller PCA 110 V 6L DC Controller PCA 110 V Exchange 5L DC Controller PCA 220 V 5L DC Controller PCA 220 V 6L DC Controller PCA 220 V Exchange 5L DC Controller PCA Case Assembly ry Assent L Delivery Assembly 6L Delivery Roller 1 D
111. sitive to light temperature and humidity Follow the recommendations in this section to ensure the highest quality and longest life of HP toner cartridges Keep the printer within the following environmental conditions for optimum performance Storage Conditions The toner cartridge is affected by its environment Packaging protects the toner cartridge from light and increases its storage life It is important to store the cartridge in its original packaging until the cartridge is ready to be installed in the printer When storing the toner cartridge in a warehouse or work area make sure the storage place meets the conditions specified in Table 2 1 Storing Opened Toner Cartridges Because the cartridge does not have a shutter to cover the laser beam access slot it should be kept inside the printer until empty Toner cartridges which have had the toner sealing tape removed are also more vulnerable to environmental extremes such as high humidity If the toner cartridge must be removed from the printer always store the cartridge Inside the protective bag in which it was originally packaged In a dark cabinet away from direct sunlight Correct side up and in a horizontal position not standing on end At a temperature between 32 to 104 F 0 and 40 C Away from ammonia or other organic solvent fumes Never ship the printer with a toner cartridge installed Excessive vibration during shipping can cause toner to leak contam
112. t Feed Roller and Separation Pad and that the sheet is not folded or bent 6 10 Removal and Replacement Figure 6 7 Internal Assemblies Control Panel Remove the Printer Covers Use the needlenose pliers to release the Control Panel connector Figure 6 7 callout 1 Press the tab on the top of the Control Panel downward Figure 6 7 callout 2 The Control Panel will pop out of the printer chassis Lift the Control Panel out Control Panel Removal Removal and Replacement 6 11 9 juaus9e day pue enouay Exit Roller Assembly 1 Remove Printer Covers 2 Grasp both tabs at the lower ends of the Exit Roller bushings and pull inward This will release the tabs from the printer chassis Figure 6 8 callout 1 3 Rotate the tabs 90 degrees clear of the printer chassis Figure 6 8 callout 2 4 Lift the roller out Figure 6 8 Exit Roller Removal To reinstall The end of the Exit Roller that has a gear attached must fit into the gear train It is possible to reinstall the Exit Roller so that the gear end is on the opposite side of the printer this placement would cause paper path problems 6 12 Removaland Replacement Note Figure 6 9 Delivery Assembly 1 Remove the Printer Covers and Exit Roller Assembly 2 Remove the EP Right Hand assembly by pressing the tab in Figure 6 9 callout 1 and sliding the assembly toward the front of the printer Figure 6 9 callout 2 The EP Right Ha
113. t generally recommended it may be an effective way to decrease multi feeds if the paper was poorly cut by the manufacturer and is sticking together You may also try turning the paper around to feed the opposite end first e Your software application may send an extra page eject command Check your software s printing configuration information If you are using a word processing program check for a natural page break and a forced page break that are close to each other causing a blank page Blank Pages all pages If all of your pages are blank e Make sure you removed the entire length of the sealing tape from the toner cartridge before you installed the cartridge e The toner cartridge may be completely out of toner Replace the cartridge Try printing a self test page See Chapter 3 If the page is still blank the printer may need service There may be discontinuities in the high voltage contact points Clean the high voltage contact points on the toner cartridge and transfer roller Reseat the Laser Scanner connectors Replace the Laser Scanner unit Replace the DC Controller Dark Background e Adjust the toner density setting through your software or printer driver There may be discontinuities in the high voltage contact points Clean the high voltage contact points on the toner cartridge and transfer roller Replace the Laser Scanner unit Replace the DC Controller 7 18 Troubleshooting
114. ter Gothic Bd Univers Md It Albertus Md Letter Gothic It Univers Bd It Albertus XBd CG Times Univers Md Cd Wingdings cs 65 CG Times Bd Univers Bd Cd Printer Information PRINTER CONFIGURATION COPIES 1 ECONOMODE OFF ORIENTATION PORTRAIT FONT NUMBER 0 LINES OF TEXT 60 FONT SOURCE I PAPER SIZE LETTER FONT HEIGHT 12 0 MANUAL FEED OFF FONT PITCH 10 00 DEVICE RESOLUTION 600 SYMBOL SET PCB RET ON DEFAULT TYPEFACE Courier DENSITY 3 Total Memory 1 MByte IMAGE ADAPT AUTO Power on Page Count 0 PAGE PROTECT AUTO Firmware Datecode 19950218 1 0 BUFFERING AUTO Image Adapt Used NO locos Self test Page for HP LaserJet 5L Operating Overview 3 7 1e1nBiuo5 pue uoinejeisu UOI Figure 3 2 Lasenter OL True 600 dpi Ejes m A Supports DOS and Windows A O T Upgradable Two Paper 4 Input Sources Printer Configuration Total Memory 1 MByte Font Number Printer Resolution 600 Font Source Resolution Enhancement ON Font Height Economy Mode OFF Font Pitch C 1 Symbol Set Orientation PORTRAIT Default Typeface Paper Size LETTER Page Protection Lines Of Text 60 Image Adapt Manual Feed OFF Image Adapt Used Toner Density 3 Power On Page Count 0 LO Buffering AUTO Firmware Datecode 19960912 7 Via optimal HP JD EX print server EA oco T Self test Page for HP LaserJet 6L The self test page lists the current printer configuration
115. th the protective cover removed from the Laser Scanner Assembly The reflected beam although invisible can damage your eyes Regulatory Information B 1 Laser Statement Finland The following applies to printer operation and servicing in Finland LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT HP LaserJet s 4V and 4MV laserkirjoitin on k ytt j n kannalta turvallinen luokan 1 laserlaite Normaalissa k yt ss kirjoittimen suojakotelointi est lasers teen p syn laitteen ulkopuolelle Kirjoittimen on hyv ksynyt Suomessa laserturvallisuuden osalta S hk tarkastuskeskus Laitteen turvallisuusluokka on m ritetty valtioneuvoston p t ksen N o 472 1985 ja standardin EN 60825 1991 mukaisesti VAROITUS Laitteen k ytt minen muulla kuin k ytt ohjeessa mainitulla tavalla saattaa altistaa k ytt j n turvallisuusluokan 1 ylitt v lle n kym tt m lle lasers teilylle VARNING Om apparaten anv nds p annat s tt n i bruksanvisning specificerats kan anv ndaren uts ttas f r osynlig laserstralning som verskrider gr nsen f r laserklass 1 HUOLTO HP LaserJet s 4M and 4MV kirjoittimen sis ll ei ole k ytt j n huollettavissa olevia kohteita Laitteen saa avata ja huoltaa ainoastaan sen huoltamiseen koulutettu henkil T llaiseksi huoltotoimenpiteeksi ei katsota v riainekasetin vaihtamista paperiradan puhdistusta tai muita k ytt j n k sikirjassa lueteltuja k ytt j n teht v ksi tarkoite
116. the others If there is more than one error condition at the same time the highest priority error will be displayed The priority of errors is Service Errors Door Open No Toner Cartridge Paper Jam Paper Out Memory Error Manual Feed Troubleshooting 7 7 Bunoouse qnoJ L Printer Status Messages The following table lists printer LED messages and their meanings and describes recommended actions For more information on the Front Panel layout refer to Using the Control Panel in Chapter 3 Installation and Configuration Table 7 1 Printer Status Messages 1 of 2 Paper Out Error Add paper Door Open or No EP Cartridge Close the printer door and or verify that the EP cartridge is installed Paper Jam Clear paper jam If you have completed these recommended actions and the error persists see Table 7 3 Memory Error There is either too much 1 Turn Page Protection on within your software data or the data is too complex application or Windows 2 Reduce the complexity of the print job 3 Reduce resolution to 300 dpi within your software application or Windows 4 Add optional memory to the printer 5 Make sure Enhanced I O is on Auto Mode PCL mode and resend print job See Chapter 3 PCL Printer Settings 6 If the Auto Continue variable is on within PJL the printer will continue printing after 10 seconds
117. the spring is placed over the positioning pin callout 3 because inadequate pressure will cause fusing problems Replace the screws Figure 6 12 Fuser Pressure Plate Replacement 6 16 Removal and Replacement Figure 6 13 Heating Element 1 Remove Printer Covers Delivery Assembly Figures 6 9 and 6 10 and Fuser Pressure Plate Figure 6 11 2 Remove the wire cover on the right side of the printer for the Heating Element wires by pressing in on the tab and pulling outward Figure 6 13 callout 1 Heating Element Removal 1 of 3 Removal and Replacement 6 17 9 juawa9e doy pue enousy 3 Disconnect the AC voltage to the Heating Element by releasing the connector located on the DC Controller Press down on the connector release with a small flathead screwdriver Figure 6 14 callout 1 Since this is a small space itis much easier to reach the connector with a screwdriver Pull straight out Figure 6 14 callout 2 Figure 6 14 Heating Element Removal 2 of 3 6 18 Removal and Replacement Figure 6 15 4 Remove the wire from the wire guides along the right side of the printer 5 Disconnect the thermistor feedback connector in the left front side of the Fusing Assembly Figure 6 15 ae A Ae ef PS AA Heating Element Removal 3 of 3 6 Lift the Heating Element out To reinstall Make sure the connectors are properly reattached Removal and Replacem
118. through a Bi directional Parallel connection The printer can tell the host such things as the control panel status 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 Functional Overview 5 11 G M9IAJ9AQ jeuonouny Image Formation System Laser printing requires the interaction of several different technologies such as 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 six processes Step 1 Drum Cleaning Step 2 Drum Conditioning Step 3 Image Writing Step 4 Image Developing Step 5 Image Transferring Step 6 Image Fusing Figure 5 4 Electrostatic Latent Image Formation Block amp Flow Of Paper E Direction Of Drum Rotation Drum Cleaning Block Paper Delivery 8 p E E 2 Image Formation Block Diagram 5 12 Functional Overview CAUTION Toner Cartridge As the heart of the Image Formation System the toner cartridge houses the cleaning conditioning and developing steps of the process The toner cartridge contains the photosensitive drum primary charging roller developing station toner cavity and cleaning station Including these components which wear degrade or ar
119. to remove any dust particles Troubleshooting 7 15 AQ Character Voids Character voids are white areas within the parts of characters that should be solid black e If you are using transparencies when you experience this problem try another type of transparency Hewlett Packard transparencies are designed to minimize character voids Because of the composition of transparency media some character voids are normal e You may be printing on the wrong side of the paper Remove the paper and turn it over The label on many reams of paper has an arrow indicating the print side e Your paper may not meet the requirements for the printer Background Scatter Background scatter results from bits of toner distributed on the front or back of a printed page Background scatter often is isolated to a specific area of the page e Check the environment High humidity can cause this error Change the paper type weight or surface finish See appendix B of the User s Manual for paper specifications e If background scatter occurs on an envelope try moving the text to an area with no seams Printing on seams can cause this problem e If background scatter covers the entire surface of an envelope try adjusting the print density through your software or printer driver e If this problem occurs on the back of a printed page it may be caused by spilled toner inside the printer See Cleaning Your Printer in Ch
120. ttuja yll pitotoimia jotka voidaan suorittaa ilman erikoisty kaluja VARO Mik li kirjoittimen suojakotelo avataan olet alttiina n kym tt m lle lasers teilylle laitteen ollessa toiminnassa l katso s teeseen VARNING Om laserprinterns skyddsh lje ppnas d apparaten r i funktion uts ttas anv ndaren fr osynlig laserstr lning Betrakta ej str len Tiedot laitteessa k ytett v n laserdiodin s teilyominaisuuksista Aallonpituus 777 795 nm Teho 5 mW Luokan 3B laser B 2 Regulatory Information Note Note Toner Safety In case of toner spills skin and clothing are best cleaned by removing as much toner as possible with a dry tissue then washing with cold water Hot water causes toner to permanently set into clothing MSDS Information A Material Safety Data Sheet MSDS for toner or any other chemical used in the printer is available through Hewlett Packard s Customer Information Center by either mail or fax By mail To obtain an MSDS for the HP C3906A toner cartridges through the mail call the Customer Information Center CIC at 1 800 752 0900 between 6 A M and 5 P M Pacific Standard Time By fax To obtain an MSDS for the HP C3906A toner cartridges by fax call HP ASAP Automated Support Access Program at 1 800 333 1917 and follow the instructions for using the HP FIRST fax service See Technical Assistance in chapter one for more information on the HP FIRST service Ozone Emission
121. uring Standby amp SleepMode Silent 1 6 Product Information Figure 1 3 Product Overview Front Side Views of the Printer 1 Paper Input Support 7 Front Panel Button 13 Front Output Slot face up 2 Paper Output Support 8 Paper Output Bin 3 Paper Guides 9 Paper Path Lever 4 Error top Light 10 Serial and Model Number under printer 5 Data middle Light 11 Paper Input Bin 6 Ready bottom Light 12 Single Sheet Input Slot Product Information 1 7 L uoneuuoju jonpoJg Li x o 5 iL Front Door Assemblies 16 Transfer Roller do not touch 17 EP Door 14 Paper Release Lever 15 Toner Cartridge Compartment 1 8 Product Information Figure 1 5 L uoneuuoju ynpold Back View of the Printer 18 Power Cable Connector 20 Memory Expansion Cover 19 Parallel Cable Connector Product Information 1 9 Service Approach Repair of the printer normally begins with the use of the printer s internal diagnostics in conjunction with the troubleshooting procedures in Chapter 7 Once a faulty part is located repair is generally accomplished by assembly level replacement of Field Replaceable Units FRUs Some mechanical assemblies may be repaired at the subassembly level PCA component replacement is not supported by Hewlett Packard Part numbers for all FRUs are located in Chapter 8 of this manual Parts Exchange Program HP offers remanufactured assemblies for some select
122. val o o 6 37 Figure 6 34 Subpad Removal lens 6 38 Figure 6 35 Feed Assembly Removal 1 of 3 6 39 Figure 6 36 Feed Assembly Removal 2 of 3 6 40 Figure 6 37 Feed Assembly Removal 3 of 3 6 41 Figure 6 38 Memory Door Guide Removal 6 42 Figure 6 39 Motor Removal ees 6 43 Figure 6 40 DC Controller Removal 1013 6 44 Figure 6 41 DC Controller Removal 2 of 3 6 45 Figure 6 42 DC Controller Removal 3 of 3 6 46 Figure 6 43 Formatter Board Removal o 6 47 Figure 7 1 Paper Path and Components 7 5 Figure 7 2 DC Controller PCA Components 7 6 Figure 7 3 Heating Element Resistance Check 7 11 Figure 7 4 Engine lest oso ma e u a om rr eae 7 21 Figure 7 5 Toner Cartridge High Voltage Connection Points 1 of 2 7 24 Figure 7 6 Toner Cartridge High Voltage Connection Points 2 of 2 7 25 Figure 7 7 Overriding PS204 and SW101 7 27 Figure 7 8 Repetitive Image Defect Ruler 7 28 Figure 7 9 Repetitive Image Defect Ruler 7 29 Figure 8 1 Major Assembly Locations 0 8 7 Figure 8 2 Covers and Doors 0000008 8 8 Figure 8 3 Internal Components 1 of 3 8 10 Figure 8 4 Internal Components 2 of 3 8 12 Figure 8 5 I
123. voltage to the primary charging roller and the developing roller This circuit also applies a positive or negative DC voltage to the transfer charging roller according to the instructions from the CPU on the DC Controller PCA This circuit also controls the image density by changing the primary AC voltage and the developing AC bias according to the setting of the print density dial High voltage is disabled when the printer s EP Door is open 1 e switch SW101 is open Functional Overview 5 7 G M9IAJ9AQ jeuonouny 5 8 Formatter System The Formatter PCA is responsible for the following Receiving and processing print data from the printer interface Monitoring Front Panel Button and relaying printer status information Developing and coordinating data placement and timing with the print engine Storing font information Communicating with the host computer through the Bi Directional Interface The Formatter PCA receives print data from the Bi Tronics Interface and converts it into a dot image The DC Controller 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 The Formatter PCA also provides mounting locations for additional memory CPU The Formatter PCA incorporates a Motorola 68030 custom built microprocessor operating at 24 MHz Read
124. x8 Parts and Diagrams 8 13 8 sweibeig pue Sued Figure 8 5 19 1 Se See Figure 8 9 Internal Components 3 of 3 8 14 Parts and Diagrams Table 8 6 Internal Components 3 of 3 1 Pickup Roller Grounding Clip 2 Pressure Roller Bushing 3 EP Fight Hand Guide 42 5 Fuser Pressure Plate Transfer Roller Guide 1 Case Ground Metal 1 EP Right Hand Guide 10 1 EP Lett Hand Guide 11 1 Pressure Roller Gear 12 RB1 7256 000CN RB1 7256 000CN 1 Right Pressure Roller Housing 13 RB1 7255 000CN RB1 7255 000CN Left Pressure Roller Housing 14 RF5 1533 000CN RF5 1533 000CN Pressure Roller Ground Guide 15 1 Fuser Connector 16 1 Heating Element 110v 16 1 Heating Element 220v T 1 crew RS Mox 5 14 sue RS Ms 22 RG5 2028 000CN RG5 2028 000CN 1 Control Panel PCA Assembly 23 RG5 1961 000CN RG5 3452 000CN Transfer Guide Assembly CK 8006 CK 8006 Pressure Roller Grease Parts and Diagrams 8 15 8 sweibeig pue syed Figure 8 6 4601 9 J202 10 cu Bw mo E J002 J008 401 J802 AZ 4305 DC Controller Formatter and Cables 8 16 Parts and Diagrams Table 8 7 DC Controller Case me LaserJet 5L Part No LaserJet 6L Part No Qty RG5 2024 000CN RB2 1719 000CN Formatter Shield Formatter Exchange 1 DC Controller PCA 110 V 2 3 3 3 3 4 5 10 11 12 13 14 C3942 69002 n a RG5 2023 000CN RG5 3506 000CN RG5 2025 000CN RG5 35

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