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HP LaserJet 5L (C3941A)

1. 5 3 DC Controller Loads o o oo oo 5 4 EconoMode vs Normal Mode sn 5 10 Image Formation Block Diagram 5 12 Simplified Paper Path o 5 16 Solenoid and Sensors lll lll 5 17 General Timing Diagram llle 5 20 Phillips and Posidriv screwdrivers 6 4 Back Cover Removal 10f2 6 6 Back Cover Removal 2 of 2 6 7 EP Door Assembly Removal o o 6 8 Memory Door Removal o o 6 9 Main Cover and Paper Input Assembly Removal 6 10 Control Panel Removal oo o 6 11 Exit Roller Removal 0 oo 6 12 Delivery Assembly Removal 1 of 2 6 13 Delivery Assembly Removal 2 of 2 6 14 Fuser Pressure Plate Removal 6 15 Fuser Pressure Plate Replacement 6 16 Heating Element Removal 10f3 6 17 Heating Element Removal 2 of 3 6 18 Heating Element Removal Bof3F 6 19 Pressure Roller Removal 6 20 Face Up Face Down Lever Replacement 6 21 Fuser Exit Roller Removal o 6 22 Paper Exit Sensor Flag Replacement 6 23 Laser Scanner Assembly Removal 6 24 Solenoid Removal 1 of 2 o 6 25 Solenoid Removal 2 of 2 o 6 2
2. 3 6 PCL Printer Driver 42235 a A a ROS EUN 3 7 Using Host Based and PCL Drivers Together 3 9 Using the Control Panel oo o en 3 10 Control Panel Layout o o ee ee 3 10 LEDILISHtS moe met Reyes Se ek A a ee EAS 3 11 The Front Panel Button lees 3 13 Printing a Self Test Page es 3 14 Continuous Self Test o ooo e ee 3 15 Printing an Engine Test le 3 16 Resetting the Printer o a 3 17 To Reset the Printer eee 3 17 Installation and Configuration 3 1 3 2 Installation and Configuration Note Note Ao oom Unpacking and Installation Before unpacking the printer inspect the shipping container for signs of physical damage Since a damaged shipping box is an indication of improper handling during shipping the printer may also be damaged If the shipping container has any sign of damage unpack the printer and plug it in with the carrier s agent present If the printer appears damaged or fails a self test do not accept it See Printing a Self Test Page later in this chapter Step 1 Choose the best location Verify that the printer location meets all requirements listed in Chapter 2 Step 2 Unpack the printer Remove the power cord manual and the toner package Remove the printer from its box Fe Remove the outer packaging material from the printer os Open the EP Door Sa SR Step 3 Check packa
3. 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 8 sweer pue Sued Delivery Assembly Figure 8 10 Separation Guide Assembly Figure 8 9 Parts and Diagrams 8 7 Figure 8 2 Covers and Doors 8 8 Parts and Diagrams Table 8 3 Covers and Doors O fmon CTE Peron 1 jetz A r Face up Face down Switch Output Extender 1 as r I E E E Rer NE Cum 5o e p so Ca EN to pr CNN p2 LEN so 502 Parts and Diagrams 8 9 8 swelbeig pue syed Figure 8 3 Internal Components 1 of 3 8 10 Parts and Diagrams Table 8 4 Internal Components 1 of 3 I 7 s CET imerssaverteune gt Parts and Diagrams 8 11 8 swepe pue syed Figure 8 4 Internal Components 2 of 3 8 12 Parts and Diagrams Table 8 5 Internal Components 2 of 3 ABI 7902 0000N Cap XA9 0724 000CN PRI Screw RS M3x8 XA9 0813 000CN 2 Screw RS M3x8 with star washer 11 RB1 7176 000CN Mylar Guide 12 RB1 7305 000CN I O Sheet Metal 501 XB4 7401 007CN 3 Screw Tapping Panhead M4x10 502 XB1 1300 807CN Screw PH M3x8 Parts and Diagrams 8 13 8 sweer pue Sued Figure 8 5 Internal Components
4. J202 6 75 17 cm Paper Pickup Solenoid J204 2 Main Motor J401 5 13cm 12Vdc Shutoff SW101 J305 15 5 39 cm Parts and Diagrams 8 17 8 sweer pue Sued Figure 8 7 See Figure 8 8 Pickup Roller Assembly 8 18 Parts and Diagrams Table 8 7 Idler Roller Shaft Assembly 14 Kick Plate Spring 17 RB1 7186 000CN Right Leg 18 RF5 1490 000CN Paper Kick Plate 16 RB1 7185 000CN Left Leg 501 XB4 7401 0007 Screw TP PH M4x10 Parts and Diagrams 8 19 8 sweer pue Sued ep o b 5 LL Feed Assembly 8 20 Parts and Diagrams Table 8 8 ness 0000 Food Assam a me 72250000N ler ter Parts and Diagrams 8 21 8 sweer pue Sued ki o ia zi e iL Separation Guide Assembly 22 Parts and Diagrams 8 Table 8 9 Separation Guide Assembly Face up face down Shaft Fuser Roller Bushing Fuser Exit Roller Assembly Parts and Diagrams 8 23 8 sweer pue Sued Figure 8 10 Delivery Assembly 8 24 Parts and Diagrams Table 8 10 esses 0 pete Le possesses INC reete Parts and Diagrams 8 25 8 sueibeig pue sued 8 26 Parts and Diagrams Parts Index Parts Index A 1 Table A 1 A 2 Parts Index Parts Index Alphabetical Parts List Description AC Cable Cover Back Cover Back Grounding Clip Back Sheet Metal Cap Cap Case Grounding Metal Clutch Control Panel Cable Guide Control P
5. Note Figure 6 39 hen DC Controller Remove the Printer Covers Disconnect the motor connector from the motor Figure 6 38 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 28 Remove the AC Cable cover and disconnect the AC Cable from the DC Controller Figures 6 13 and 6 14 Tip the printer on its top with the back facing you Remove the 4 screws Figure 6 39 callouts 1 and 2 Make certain when you reinstall the DC Controller that the grounding screw with the washer is replaced in the same location Figure 6 39 callout 2 PRA mene n DC Controller Removal 1 of 3 Removal and Replacement 6 43 9 juaua9e doy pue ea0uidy 8 Rotate the case forward slowly about three or four inches until you can see the Fusing Assembly connector J206 Release the connector Figure 6 40 callout 1 Caution ESD SENSITIVE Figure 6 40 ree DC Controller Removal 2 of 3 6 44 Removal and Replacement Figure 6 41 Caution Note 9 Rotate the metal case around so that the case is sitting on your work surface 10 Remove the 7 remaining connectors Figure 6 41 callout 1 11 Remove the screws 5 that secure the DC Controller to the metal case Figure 6 41 callout 2 DC Controller Removal 3 of 3 12 Remove the DC Controller by lifting gently
6. o 8 4 Accessories and Supplies o o 0000200004 8 5 Common Hardware en 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 description 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 8 Hewlett Packard Co Support Materials Europe Wolf Hirth Strasse 33 D 7030 B blingen Germany 49 7031 14 2253 sweer pue Sued You can also contact HP at 916 783 0804 to find out part numbers for the LaserJet 5L Contact your local HP Parts Coordinator for other local phone numbers Parts and Diagrams 8 3 Ordering Consumables Consumables and accessories such as those listed on Table 8 1 may be ordered from He
7. Power System Formatter System Image Formation System Paper Feed System Laser Scanner System Figure 5 1 is a generalized block diagram of the printer DC Controller Paper Output Bin Paper Input Bin 3 e 5 a 3 o e 2 o n sensitive Drum Front Output Slot Printer Functional Block Diagram Functional Overview DC Controller Power System 5 3 S Tl og o2 22 Do 3 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 The DC Controller also includes both AC and dc power supply and distribution circuitry The DC Controller controls the following systems and functions Print Engine Control Laser and Scanner Drive Paper Motion Photosensors Paper Out Paper Registration and Paper Exit Sensors 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 Figure 5 2 Formatter DC Controller Laser Scanner PCA Assembly EM Toner Cartridge Delivery Charging Roller Paper Sensor Developing Roller ias Transfer Roller Fusing Assembly Front Panel i Sensors Solenoid DC Controller Loads 5 4 Functional Overview Print Engine Control System Laser and Scanner Drive Based
8. manufacturer 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 e Set resolution to 300 dpi through your software or 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 appendix B 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 BunooysealqnolL Z AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc Blank Page Occasional A page is completely blank If you get occasional blank pages 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 acco
9. the ROM is corrupted or an error has been found in the RAM 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 Fuser Error This indicates a fusing 1 Unplug the printer for 10 minutes or more assembly malfunction 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 chassis and J206 of the DC Controller PCA 3 Remove the connector from J102 of the DC Controller See Figure 6 13 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 7 10 Troubleshooting Figure 7 3 Table 7 4 Bunooys ajqnoaL 2 Heating Element Res
10. usually a fuzzy black 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 to remove any dust particles Troubleshooting 7 15 Aa Aa 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 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 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 f background scatter
11. 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 resolution 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 17 standard memory 1 3 warranty 1 13 warranty 1 14 warranty exclusions 1 13 printer comparison memory 1 3 printer dimensions 1 3 1 5 2 4 printer driver host based 3 5 installing 3 4 PCL 3 7 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 14 priority of errors 7 7 PRNT printer timing 5 19 product information 1 1 1 14
12. 1 of 2 o 7 8 Table 7 2 Printer Status Messages Continued 2 of 2 7 9 Table 7 3 Unclearable EttOT o a 7 9 Table 7 4 Service and Error Messages 1 of 3 7 10 Table 7 4 Service and Error Messages Continued 2 0f3 7 11 Table 7 4 Service and Error Messages Continued 3 of 3 7 12 Table 7 5 High Voltage Power Supply Check 7 24 Table 7 6 Paper Curl Troubleshooting 7 26 Table 7 7 Cable Pinouts llle 7 30 Table 7 8 Cable Pinouts 2 00005 ee eee 7 31 Table 8 1 Accessories and Supplies 00 0 8 5 Table 8 2 Common Fasteners Used in the Printer 8 6 Table 8 3 CoversandDoors 0005 ee eee 8 9 Table 8 4 Internal Components lof3 0 8 11 Table 8 5 Internal Components 2013 ooo ooo 8 13 Table 8 5 Internal Components 3 of 3 44 8 15 Table 8 6 ECUCase 22h 8 17 Table A 1 Alphabetical Parts List o o A 2 Table A 2 Numerical Parts Index o o A 6 vii viii Product Information Contents Printer Features o aaa fe RR RR RUE Ua Go RARE AA 1 3 Paper Capacities and Sizes o e 1 3 Identification 905 00m oec aaa RR RS GU ee ee VOX ee 1 4 Model and Serial e 1 4 Specifications sse aa aa AR A a a 1 5 Product Overview nh 1 6 Front Side Views o
13. 18M0d General Timing Diagram Functional Overview 20 5 Removal and Replacement Contents Removal and Replacement Strategy llle 6 3 Required Tools 5 4 2 voee Ryo e ROO XU IY See ees 6 4 Installing Memory Cards DRAM lees 6 5 Covers amd DOS 6 6 Back Covet usw s a a A 6 6 EP Door Assembly e 6 8 Memory Do0T 0 0009 SS REOR a 6 9 Main Cover and Paper Input Assembly lle 6 10 IntemalAssemblies lees 6 11 Control Panel s o s eTa 2 oe gere p A a i 6 11 Exit Roller Assembly 0 0000 ee eee eee 6 12 Delivery Assembly ooo o 6 13 Fuser Pressure Plate 4 use oy Rs n n mem ee ew RD 6 15 Heating Element eA 6 17 Pressure Roller sees RR ok RR S ee es RR RA 6 20 Face Up Face DownLever lee 6 21 Fuser Exit Roller Assembly o o o 6 22 Paper Exit Sensor Flag o e 6 23 T p Assemblies Re RR a 6 24 Laser Scanner Assembly o o o 6 24 Solenoid ote acarrea as o LU Ge 6 25 Pickup Roller Assembly o o o e 6 27 Paper Feed Frame aa a eek ra aa E ERA 6 30 Transfer Roller Guide amp Transfer Roller 6 33 Kick Plate ike eodem ht Be oR Wee Rx IR 6 34 Separation Pad v eosi sx goto oe edepol cix D fs 6 36 Subpads s s poe a e e a heute emo NUR eR a RUE E WR s 6 37 Feed Assembly eee 6 38 BottomAssembli
14. 20 cartridge in its original packaging until the cartridge is ready to be installed in the E printer g e When storing the toner cartridge in a warehouse or work area make sure the storage gt 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 contaminating 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 Site Requirements 2 5 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 Repea
15. 3 1 3 18 product overview 1 6 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 10 regulatory information B 1 B 4 related documentation 1 9 1 10 remanufactured assemblies 1 9 removal and replacement back cover 6 6 bottom assemblies 6 41 conductive grease 6 20 control panel 6 11 covers and doors 6 6 DC Controller 6 43 delivery assembly 6 13 EP Door 6 8 exit roller assembly 6 12 face up face down lever 6 21 feed assembly 6 38 formatter pca 6 46 fuser exit roller 6 22 fuser pressure plate 6 15 heating element 6 17 internal assemblies 6 11 kick plate 6 34 laser scanner assembly 6 24 main cover and paper input assembly 6 10 memory door 6 9 memory door guide 6 41 motor 6 42 paper exit sensor flag 6 23 paper feed frame 6 30 pickup roller assembly 6 27 pressure roller 6 20 separation pad 6 36 solenoid 6 25 strategy 6 3 subpads 6 37 top assemblies 6 24 transfer roller 6 33 repair philosophy 1 9 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 2 6 space 2 4 resetting the printer 3 17 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 16 microsw
16. 5 12 19 10 12 11 10 502 503 17 1 20 501 501 501 502 3 4 2 13 7 10 23 7 Table A 2 Numerical Parts Index C3941 69001 DC Controller PCA 110V Exchange 86 C3941 69002 DC Controller PCA 220V Exchange 86 63941 69003 Laser Scanner Exchange Pall C3942 67902 Formatter Exchange C3942 69002 Formatter New RB1 7105 000CN 8 3 RB1 7106 000CN 8 3 RB1 7107 000CN 8 3 RB1 7109 000CN 8 5 RB1 7129 000C Case Ground Metal RB1 7130 000C 8 5 RB1 7183 000C 8 7 RB1 7184 000CN 8 7 RB1 7220 000CN 8 7 10 RB1 7223 000CN 8 4 RB1 7226 000C 8 8 RB1 7234 000C Cap 8 5 A 6 Parts Index Table A 2 Numerical Parts List continued PartNo Description RB1 7255 000CN RB1 7256 000CN RB1 7276 000CN RB1 7278 000C RB1 7284 000CN RB1 7285 000CN RB1 7286 000CN RB1 7287 000C RB1 7288 000C RB1 7289 000CN RB1 7293 000CN RB1 7294 000CN RB1 7302 000C RB1 7305 000CN RB1 7321 000CN RB1 7326 000C RB1 7327 000C RB1 7331 000C RB1 7333 000CN RB1 7335 000CN RB1 7341 000CN RB1 7343 000CN RB1 7344 000CN RB1 7385 000CN RF5 1490 000CN RF5 1492 000CN RF5 1493 000CN RF5 1501 000CN RF5 1509 000CN RF5 1513 000CN RF5 1514 000CN RF5 1515 000CN RF5 1516 000CN RF5 1517 000CN RF5 1521 000CN FacoupFacedomnshat es FuserRolerBusting 9 Cap 8 5 Parts Index A 7 Table A 2 A 8 Parts Index Numerical Parts List continued RF5 1522 000CN RF5 1524 000CN RF5 1530 000CN RF5 1533 00
17. Figure 6 25 To reinstall 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 juaus9e doy pue enoulay Paper Feed Frame 1 Remove the Printer Covers 2 Remove the Pickup Roller Assembly Figures 6 23 through 6 24 3 Release the connectors from the Laser Scanner Top Cover EP Cartridge Sensor PS203 Switch 101 Front Control Panel Figure 6 26 Disconnect the Solenoid from the DC Controller at J204 Figure 6 22 callout 1 Figure 6 26 Paper Feed Frame Removal 6 30 Removal and Replacement Figure 6 27 4 Remove the 4 hex head screws from the Paper Feed Frame Figure 6 27 callout 1 5 Remove the self tapping screw from the back sheet metal plate and lift it off Figure 6 27 callout 2 Removal and Replacement 6 31 9 juaua9e doy pue ea0uidy 6 Release the sensor unit connector Figure 6 28 Figure 6 28 Paper Feed Frame Removal 2 of 2 7 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 6 32 Removaland Replacement Transfer Roller Guide amp Transfer Roller 9 1 Remov
18. Heating Element Removal 1 of 3 Removal and Replacement 6 17 9 juaus9e doy pue jeAowey 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 6 Liftthe Heating Element out Removal and Replacement 6 19 9 juaua9e doy pue enoulay 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 Removal 3 Liftthe right end of the Pressure Roller up and out of the printer chassis 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 Re
19. Parts Index Regulatory Information 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 WARNING 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 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 standardi
20. 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 Installation and Configuration 3 15 uone1nb uo pue uonejeisu Printing an Engine Test The engine test print can be used to 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 6 Engine Test Printout Engine Test Button 3 16 Installation and Configuration 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 th
21. direct sunlight Install with enough space around the printer for proper access and ventilation See Figure 2 1 Install printer away from the direct flow of exhaust from air ventilation systems Site Requirements 2 3 Figure 2 1 Table 2 2 Printer Space Requirements Legal A4 Letter T 311 2 mm 335 5 mm Printer Space Requirements E E eo Ke ki 372 7 mm 227 5 mm Printer Dimensions eei men 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 The HP C3906A Toner Cartridge Toner cartridges contain components that are sensitive 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 C The toner cartridge is affected by its environment Packaging protects the toner D o cartridge from light and increases its storage life It is important to store the
22. 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 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 pri
23. into the printer Verify that FU102 is not open See Figure 7 2 Verify that motor connector J1 is seated into J401 of the DC Controller See Figure 7 2 Verify that the motor is correctly mounted to the printer chassis If all of these conditions are correct replace the DC Controller PCA an or the motor N w A Un 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 If the engine test is successful replace the Control Panel first then if necessary the Formatter PCA If the engine test is not successful replace the DC Controller PCA A Un If the control panel displays an error refer to the appropriate section in this chapter to correct the error Continued on following page Troubleshooting 7 3 BunooysalqnolL ZL 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 Cont
24. occurs on an envelope try moving the text to an area with no seams Printing on seams can cause this problem e f 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 Chapter 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 AasbbCc AaBoCc AaB Cc AaBbCc AaBbCc AncORhOco Dropouts Dropouts are characters that are partially printed The Paper Input Bin may have been loaded with too much paper Make sure that no more than 100 sheets of paper are loaded 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 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
25. on the side opposite the formatter then sliding it out Be careful not to rotate the DC Controller as you remove it 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 Removal and Replacement 6 45 9 juaua9e doy pue jeAowaY Formatter PCA Caution ESD SENSITIVE Remove the Printer Covers and complete the DC Controller removal direction up to step 8 Figures 6 39 and 6 40 Remove the two cable clips Figure 6 42 callout 1 Remove all 4 screws from the formatter cover Figure 6 42 callout 2 Lift the I O shield to remove it wn A Remove the Control Panel display cable Figure 6 42 callout 3 Slide the formatter away from the DC Controller PCA to remove it from the connector Un Figure 6 42 Formatter Board Removal Note The formatter I O shield comes in two separate pieces Be careful to order the correct pieces should you need to replace them 6 46 Removal and Replacement Troubleshooting Contents General Troubleshooting Flowchart o o 7 3 Paper Path and Components o o e e 7 5 DC Controller Diagram e 7 6 Printer Error Troubleshooting o e e 17 Priority Of Errors 0 0 a rr a RE RUE S SL 1 7 Printer Status Messages o o e 7 8 Service and Error Messages o o ee 7 10 Image
26. replace the affected assembly Always remove the toner cartridge before removing or replacing parts Removal and Replacement 6 3 Required Tools 2 Phillips Screwdriver 5 5 mm Hexhead Screwdriver 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 9 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 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 Remove the Memory Expansion Cover by carefully pulling the tab out and away from the printer in a gentle rocking motion Align the memory card with the corner notch so it is positioned as in Figure 4 Push it firmly into the printer juaua9e doy pue enoulay uU A Un Replace the Memory Expansion Cover set the printer upright reinstall the toner cartridge reinsert paper and reconnect to the power s
27. three Front Panel will remain lit if there are no the factory default settings This Lights blink quickly in printer errors clears all data from memory Printer Reset Resume from Manual Feed Continue from memory error Form Feed Succession including any downloaded fonts and macros Briefly push and release the The Data middle Light Override manual feed to print button blinks from paper cassette Briefly push and release the Error top light blinks Allows the printer to recover and button continue printing the job Briefly push and release the The Data middle Light and The remaining data in printer the B bottom Light memory will print both remain on Installation and Configuration 3 13 uoneinBiu0ey pue uonejeisu 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 Laer tr SL 600ai 5 Resolution Enhancement technology amp Microfine Toner Figure 3 5 26 Scalable Typefaces Courier CG Times le Univers Md Cd It Courier Bd CG Times Bd it Univers Bd Cd it Courier It Coronat Antique Olive Courier Bd It Univers Md Antique Olive Bd Letter Gothic Univers Bd Antique Olive It Letter Gothic Bd Univers Md t Albertus Md Letter Gothic IL Univers Bd it Albertus XBd Memory Enhancement technology CG Times Univers Md Cd Wingdings ca SOS He CG Times Bd Univers Bd Cd Print
28. through the paper path you may want to observe all of the paper motion activities Overriding PS204 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 1 Remove the Printer Covers Figures 6 2 6 3 and 6 4 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 BunooysealqnolL Z N Overriding PS204 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 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 5 Transfer Roller 48 mm 1 9 in Pressure Roller 64 mm 2 5 in Upper Heating Element Film 76 mm 3 0 in Toner Cart
29. 0CN RF5 1534 000CN RG5 1940 000CN RG5 1942 000C RG5 1944 000C RG5 1945 000CN RG5 1947 000CN RG5 1961 000C RG5 1964 000C RG5 1965 000C RG5 1984 000C RG5 2000 000CN RG5 2012 000CN RG5 2013 000CN RG5 2014 000CN RG5 2015 000CN RG5 2022 000CN RG5 2023 000CN RG5 2024 000C RG5 2025 000CN RG5 2028 000CN RG5 2029 000CN RG5 2031 000CN RG5 2032 000C RG5 2033 000C RG5 2034 000C RG5 2035 000CN RG5 2036 000CN RG5 2037 000CN RH7 1282 000CN RH7 5139 000CN RS5 0791 000CN Foor nt Role Asonsy 09 Fag Goer Heating Element 110v Heating Element 220v Besser Gute Aone 59 Spur Assembly Inside Spur Assembly Outside DC Controller PCA Case Assembly 86 DC Controller PCA 110v 89 Fomara RUC DC Controller PCA 220v 89 i 1 59 a ead remeras eo rc ee Bam 9 O lA Se se Door ome Gabe 23 16 16 16 19 10 11 12 13 5 14 7 13 12 Table A 2 Numerical Parts List continued RS5 0796 000CN RS5 2501 000CN RS5 2502 000C RS5 8540 000C RS5 8541 000CN RY7 5005 000CN RY7 5006 000C RY7 5007 000CN RY7 5008 000CN RY7 5009 000CN VS1 5057 002CN XA9 0267 000CN XA9 0326 000CN XA9 0686 000CN XA9 0724 000CN XA9 0724 000C XA9 0724 000C XA9 0813 000C XA9 0824 000C XA9 0828 000C XB1 1300 807C 1 a Label 110v 12 Label 240v E Screw DC Controller PCA 896 7 I a P 7 Screw DC Controller PCA 86 7 Parts Index A 9 A 10
30. 1 49A 60001 X NTSC C3941 49A 60002 X X PAL Print Utilities HP provides several utilities for enhancing use of the LaserJet printers in MS DOS and Windows environments More information on specific utilities is included with each of the drivers listed in Table 1 6 1 10 Product Information Technical Assistance E BH HP ASAP 35 HP ASAP Automated Support Access Program provides free user technical S support information 24 hours a day 7 days a week The ASAP system includes HP AUDIO TIPS and HP FIRST both explained below The ASAP service requires a touchtone phone HP AUDIO TIPS HP AUDIO TIPS is an interactive voice response system providing prerecorded answers to the most frequently asked questions by HP LaserJet printer users Helpful System Maps to the HP AUDIO TIPS recordings are available by fax through HP FIRST HP FIRST HP FIRST Fax Information Retrieval Support Technology is a phone in fax service providing technical information for HP LaserJet users as well as service personnel Receiving a fax requires a group 3 facsimile machine or fax card Service related information includes Service Notes HP Authorized dealers Application Notes Product Data Sheets Material Safety Data Sheets MSDS Typeface and accessory information Printer support software information Toner information Driver request form and Software Matrix HP FIRST U S only Call the HP ASAP system 1 800 333 1917 and follo
31. 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 HP LaserJet 5L C3941A Paper Input Bin Capacity Paper Output Bin Capacity 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 1onpoJg 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 The serial number contains information about the Country of Origin the Revision Level the Production Code and production number of the printer The rear labels also contain power rating and regulatory information as shown in Figure 1 1 Figure 1 1 MODEL C3941A MODEL C3941A POWERRATING 100 120V 220 240V 50Hz 1 0A 127V 50 60Hz 2 0A Are This device complies with Part 5 pas fthe FCC Rules ITE MALA PASE is su uBject to e 660F itio d This product m OH ONS performance TY dandard 21 CFR chapter 1 sub chapter 65935 UCENSED UNDER ONE OR MORE Complies with Canadian EMC Class B requirements lectromagn tiques CEM H
32. 2 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 5 emissions acoustic 1 5 engine test 3 16 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 10 unclearable 7 9 exchange program 1 9 F faded print 7 14 faulty image examples 7 14 fax 1 11 FCC statement B 4 features control panel 1 3 3 10 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 11 3 12 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 16 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 5 20 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 HP AUDIO TIPS 1 11 HP CompuServe Forum 1 11 HP FIRST Fax Information Retrieval Support Technology 1 11 HPD HP s Distribution Ce
33. 3 of 3 8 14 Parts and Diagrams Table 8 5 Internal Components 3 of 3 2 10 11 12 13 14 15 16 16 17 18 19 20 21 22 23 Pickup Roller Grounding Clip PR Bushing EP Right Hand Guide 2 Pressure Roller Fuser Pressure Plate Transfer Roller Guide Transfer Roller EP Right Hand Guide 1 EP Left Hand Guide Pr Gear Right Pr Housing Left Pr Housing PR Ground Guide Fuser Connector Heating Element 110v Heating Element 220v Case Ground Metal Control Panel PCA Assembly RG5 2028 000CN RG5 1961 000CN Transfer Guide Assembly Pressure Roller Grease Parts and Diagrams 8 15 8 sweer pue Sued Figure 8 6 9 J202 72 19 dl a wo x J002 J008 4401 4802 4801 4305 a Z207 11 in 12 J001 13 14 DC Controller Formatter and Cables 8 16 Parts and Diagrams Table 8 6 ECU Case DG GonrllrPCA 1109 DG Contalar PGA 220 C3941 69001 DC Controller PCA 110V Exchange C3941 69002 DC Controller PCA 220V Exchange RG5 2022 000CN 1 DC Controller PCA Case Assembly bre AC semen s I s I The table below lists each connector its cable length and the number of pins Connector Cable Length Number of Pins inches Fusing Assembly J206 5 5 14 cm Laser Driver Beam Detect Circuitry J208 21 53 cm Door Open No EP Cartridge PS203 J209 14 35 cm Scanner Motor J 207 14 5 37 cm Paper Registration PS202 Paper Out PS204
34. 6 vi Figure 6 23 Figure 6 24 Figure 6 25 Figure 6 26 Figure 6 27 Figure 6 28 Figure 6 29 Figure 6 30 Figure 6 31 Figure 6 32 Figure 6 33 Figure 6 34 Figure 6 35 Figure 6 36 Figure 6 37 Figure 6 38 Figure 6 39 Figure 6 40 Figure 6 41 Figure 6 42 Figure 7 1 Figure 7 2 Figure 7 3 Figure 7 4 Figure 7 5 Figure 7 6 Figure 7 7 Figure 7 8 Figure 7 9 Figure 8 1 Figure 8 2 Figure 8 3 Figure 8 4 Figure 8 5 Figure 8 6 Figure 8 7 Figure 8 8 Figure 8 9 Figure 8 10 Figure B 1 Pickup Roller Assembly Removal 1 of2 Pickup Roller Assembly Removal 20f2 Paper Pickup Roller Assembly Rep Paper Feed Frame Removal lacement Inside Front View Paper Feed Frame Removal 10f2 Paper Feed Frame Removal 2012 Transfer Roller Guide amp Transfer Roller Removal Inside Back View Kick Plate Removal Kick Plate Spring Replacement Separation Pad Removal Subpad Removal Feed Assembly Removal 1 of 3 Feed Assembly Removal 2 of 3 Feed Assembly Removal 3 of 3 Memory Door Guide Removal Motor Removal DC Controller Removal 1 of 3 DC Controller Removal 2 of 3 DC Controller Removal 3 of 3 Formatter Board Removal Paper Path and Components DC Controller PCA Components Heating Element Resistance Check Engine Test Toner Cartridge High Voltage Connection Points 1 of 2 Toner Cartridge H
35. AaBbCc AaBbcc LAaBbCc AaBbCc AaBboC AaBbCc AaBoC AaBbCc_ AaBbC AciBloCc AciBlbCc AciBibCc AciBibCc AGBOCC Vertical Lines Sometimes vertically aligned black streaks or smears can appear on successive pages The toner cartridge may be damaged Replace it The printer may need cleaning See Cleaning Your Printer in Chapter 4 Replace the heating element Horizontal Stripes Sometimes horizontally aligned black streaks or smears can appear 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 e Replace the heating element Bunoousej qnoJ Z Repetitive Defects Sometimes light character shadows or repetitive marks appear on the page e 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
36. Figure 6 18 callout 1 and rotating it around Figure 6 18 callout 2 4 Slide the Exit Roller Assembly forward and out to the right of the printer Fuser Exit Roller Removal 6 22 Removal and Replacement Paper Exit Sensor Flag 9 1 Remove the Printer Covers Delivery Assembly Figures 6 9 and 6 10 and Fuser Pressure Plate Figure 6 11 2 Remove the Paper Exit Sensor flag by pressing down on the left side and pulling up on the right side yuswsoerjday pue jeAowaY To reinstall Note It is important that you reinstall the flag correctly since 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 The flag should fit snugly in place Figure 6 19 Paper Exit Sensor Flag Replacement Removal and Replacement 6 23 Top Assemblies Laser Scanner Assembly 1 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 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 ge
37. For location see Figure 6 8 Fuser Exit Roller Use a water dampened lint free cloth For location see Figure 6 18 Pressure Roller Use a dry lint free cloth For location see Figure 6 16 Transfer Roller 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 33 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 oo2ueuojule u U Printer Maintenance 4 7 Figure 4 2 A Ci EE 9 9 V VV SN EA TE TE AMAN 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 F
38. Formation Troubleshooting o o 7 13 Check the Toner Cartridge o o o e 7 13 Image Defect Examples o 7 14 Troubleshooting Checks a 7 21 Engine Test ok eh koe RU RR eR RA Ee oro 7 21 Half Self Test Functional Check o ooo oo 7 22 Drum Rotation Functional Check o oo 7 23 High Voltage Power Supply Check o o ooo 7 24 Paper AAA donid orar bodie ee cde dh hn is 7 26 Troubleshooting Tools llle 7 27 Paper Path Check ou Ghee ger dee Xs 7 27 Repetitive Image Defect Ruler 2 2 2 ooo o 7 28 Main Wiring Diagram eA 7 29 Troubleshooting 7 1 7 2 Troubleshooting General Troubleshooting Flowchart AC Power is applied to the printer Does the Printer Motor rotate for about 6 seconds 7 Is the Front Panel functional Is an Error displayed Yes No When the ac power is first applied to the printer e 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
39. KZKi EKEKI KKK EEEEEK ZZKZKZK EKEKEK EKEKEKE KKKKEEE KKZ ZZZZZKKKK EKKKKKZZZ EKEKEK KEKEEGEEK ZZZEEE KKEKEEE 222 EEEKKKEE Z2KKEEEE KKKKKEE EEEE EEKZZZK EEEEE ZEEEEZ EEEEEKKK ZZZZ EEEEEE ZKZKZKZZK KKKKKKK ZZZZZZ EEE KZKZKZK EKEKEKE KKK SECEEK ZZNZKIK EKEKEK EKEKEKEKE REE KKZ ZZZZZKKKK ERKKRAZZZ EREKEK EKZEEEE EEEEZZ EEZZZZZ EEEEEZE EZZZKKK KEEEEE KZZZEE EEEEEZ ZZZKKKE KKE KKKEEEECK ZZZEEE KKEKEEE ZZZ ECEKKKEE ZZKMEECE KKKKKEE EEE EEKZZZK EEE ZEEEEZ EEEEEKKK 2222 EEEEEE K KKKKKKK ZZZZZZ EEE KZKZKZK EKEKES ELEK ZOKZKZK EKEKEK EKEKEKEKE KRKKEEE KKZ ZZZZZKKKK EKKKKKZ Z EKZEEEE EEEEZZ EEZZZZZ EEEEEZE EZZZKKK KEEEEE KZZZEE EEEEEZ ZZZKKKE KKEZZZ KXEEEEEK ZZZ EE KKEKEEE ZZZ EEEKKKEE ZZKKEEEE KKKKKEE EEEE EEKZZZK EEEE ZEEEEZ ECEEEKKK 2222 KKK EE EEEEEE ZKZKZKZZK KKKKI E KZ KEKEKE KK EEEEEK Z2K2K2K EKEKEK EREKEKE KKKKE E KKZ ZZZZIKKKK EKKKKKZ Z EREKEK EKZEEZZEEEKKEEEZ KKEEKKZZZZZEEEKK KKKKEEEEEEZZZZEE 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 Note 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 to
40. Press ENTER or click OK The setup program will begin Follow the instructions as they appear on the screen During installation a dialog box will appear that asks whether you would like a typical or custom installation If you select typical the installer automatically selects and installs the appropriate driver depending on your system If you select os custom a dialog box will ask you which driver and what components you would Sa like to install A As part of the installation process the software creates groups within Program gS Manager for the driver that was installed You will find a group entitled either HP LaserJet 5L Printer or HP LaserJet 5L PCL Printer depending upon which driver a was installed To Verify Printer Drivers If you have installed multiple printer drivers you may want to verify which printer driver you are currently running To verify your printer driver from Program Manager select Control Panel Printers Setup About Host Based Printer Driver The host based software included with the HP LaserJet 5L is a single application that combines the functions of a printer driver printer formatter and status window This software uses your PC s resources rather than the printer s resources to process printer data Your PC converts data into raster scan line data and sends the raster data to the printer This process happens real time which speeds up the printing process Installation and C
41. S ENS ANDER ONERE MORE OF THE Apparaten skall anslutas till BOISE PRINTER DIVISION at uttag wor den ansluts11311 CHINDEN BLVD 4 120 583 4 435 732 4 686622 4 896 260 Aet nae PODA ZA 4121284 4 471 385 4 739 396 4942516 Made In USA fA HEWLETT 4 371 923 4 532 182 4 825 364 R55 8536 IB PACKARD 4 396976 4 672 457 4829419 This product conforms with CDRH radiation performancq standard 21 CFR chapter 1 sub chapter CLASS 1 LASER PRODUCT LASER KLASSE 1 APPAREIL ARAYONNEMENT LASER DE CLASE 1 This device complies with Part 15 of the FCC Rules Operation FCC ID B94C3941A BOIS PANTER DYSON PRODUCTO LERDECLAEL 11311 CHINDEN BLVD BOISE IDAHO MUSA a SER DE CLSSET Made in USA HEWLETT ca RS5 8532 PACKARD HP LaserJet 5L Model and Serial Numbers 1 4 Product Information Table 1 3 Table 1 4 Table 1 5 Specifications Performance Specifications Category Specification Monthly Usage Duty Cycle 4 000 pages Life Expectancy of Toner Cartridge pages 2 500 pages 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 Electrical Specifications 120 Vac 10 50 60 Hz 2 Hz 3 5 Q 120v printing 100 100 Vac 1096 50 60 Hz 2 Hz SleepMode 6 220 Vac 10 50Hzt2 Hz 1 8 230v printing 100 240 Vac 10 50 Hz 2 Hz SleepMode 6 Mini
42. Service Manual HP LaserJet 5L C3941A Copyright Hewlett Packard Company 1995 All Rights Reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws Publication number C3941 90987 First edition September 1995 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 related documents or emphasis Notes contain important information set off from th
43. Set Custom Paper Size Print Quality Select Print Optimization Settings and Economode Fonts Choose to run the HP Font Installer and to add True Type Fonts e Device Options Select Enhanced I O Installed Memory and Resolution Enhancement technology Figure n Setup HP LaserJet 5L PC BE TZ TI PCL Printer Settings Options 3 8 Installation and Configuration Figure 3 4 PCL Printing Status To view your printer s status open the HP LaserJet 5L PCL Printer group within Program Manager and select Status Window As shown in Figure 3 4 below the status window reports your printer s current status In this case the printer is Ready HP LaserJet 5L on LPTI 169 ues PCL Printing Status As with the host based software the PCL software has its own unique status window but both windows cannot be active at the same time To use both drivers D A see Using Host Based and PCL Drivers Together below 3 m 22 So Using Host Based and PCL Drivers Together S n 23 a Occasionally conflicts may arise between the host based and PCL drivers status windows and an error message may appear Should this occur you can disable one of the drivers using one of the following three methods Turn off the PCL software status window by selecting Device Options No Status from the PCL Printer Settings window Remove either the PCL or host based software by selecting Main Contro
44. age 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 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 5 14 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 Controlle
45. and rests inside the third pin Use needlenose pliers to place the spring correctly See Figure 6 31 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 Removal and Replacement 6 35 9 juau99e doy pue enoulay Separation Pad 1 Remove the Printer Covers Pickup Roller Assembly Figures 6 23 and 6 24 and Kick Plate Figure 6 30 2 Liftthe 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 32 3 Lift the Separation Pad 90 degrees and slide its mounting pins out of their retainers Figure 6 32 Separation Pad Removal 6 36 Removal and Replacement Note Figure 6 33 Subpads 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 Subpad Removal Removal and Replacement 6 37 9 yu w vsejd y pue enoulay Feed Assembly The Feed Assembly is located in the Paper Feed Frame 1 Remove the Printer Covers Pickup Roller Assembly Figures 6 23 through 6 25 and Paper Feed Frame Figures 6 26 through 6 28 2 Turn the Paper Feed Frame upside down 3 Remove the idler roller by
46. anel 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 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 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 PS203 and PS204 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 Fig
47. anel PCA Assembly DC Controller PCA 110v DC Controller PCA 110V Exchange DC Controller PCA 220v DC Controller PCA 220V Exchange DC Controller PCA Case Assembly DC Controller PCA Formatter Cable Delivery Assembly Delivery Roller 1 Delivery Roller 2 Delivery Spring 1 Delivery Spring 2 Door Sensor Cable Door Switch Cable EP Door Assembly EP Door Chmny EP Left Hand Guide EP Right Hand Guide 1 EP Right Hand Guide 2 Exit Roller Exit Roller Bushing Face up Face down Shaft Face up Face down Switch panne Fosson ee gt bmesme de Rosawsemon es gt Caseres es Rasaweexcn es gt Rasameomcn ee Rasamremcn es gt Rosae es Berzeren es gt 1 1 1 4 0 Table A 1 Alphabetical Parts List continued Description Feed Assembly Flag Flag Cover Flag Spring Formatter Shield Formatter Exchange Formatter New Front Gear Case Fuser Cable Guide Fuser Connector Fuser Exit Roller Assembly Fuser Paper Guide Fuser Paper Guide Fuser Pressure Plate Fuser Release Kit Fuser Release Tab Fuser Release Tab Fuser Roller Bushing Gear Gear Assembly 1 Gear Assembly 42 Gear Plate Ground Clip Heating Element 110v Heating Element 220v i Prso es CEST ee Prso ea 7 rox reaeoonon o gt E z i i 1 O Sheet Metal Idler Roller Idler Roller Shaft Assembly Input Assembly 1 Input Assembly 2 Input Extender 1 Input Extender 2 Input Sen
48. ar outward and pulling the gear off Figure 6 21 _ Solenoid Removal 1 of 2 Removal and Replacement 6 25 9 juaus9e doy pue eAoulay 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 Note Figure 6 23 Pickup Roller Assembly 1 Remove the Printer Covers 2 Remove the paper pickup gear Figure 6 21 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 up and over the two metal guides and sliding the clip off 6 23 Pickup Roller Assembly Removal 1 of 2 Removal and Replacement 6 27 9 juaua9e doy pue jeAowaY 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 Liftthe 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 Removaland Replacement Note
49. ary Roller Contact FU101 SWI101 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 bh yn m 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 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 Bunoousej qnoJ Z 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 printe
50. 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 SDULUIJUIEIA U Printer Maintenance 4 5 Cleaning the Printer To maintain the print quality thoroughly clean the printer Every time you change the toner cartridge After printing approximately 2 500 pages 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
51. door the status light comes on All on Hardware Error There is an 1 If you have added an additional memory card internal problem that won t allow try removing it printing 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 All Blinking Memory Error An incompatible See the HP LaserJet 5L User s Manual ANN 5 memory card has been installed appendix D for memory card specifications The memory card must be a 70 nsec or faster card AUN O 3 12 Installation and Configuration Table 3 2 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 Front Panel Button Usage Briefly push and release the All lights are off while The printer will wake up to a plugged into power source reagy state Self Test Briefly push and release the Ready bottom light is on Prints a self test page button and the other lights are off Press and hold the button The Ready bottom Light The reset will return the printer to until the
52. e 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 Installation and Configuration 3 17 uoneinbiu0y pue uonejeisu 3 18 Installation and Configuration Printer Maintenance Contents Life Expectancy of Consum ables uoa wA ohms mae he 6 dale s Toner Cartridge Life v cros eee RE Saving Toner with EconoMode Refilled Toner Cartridges Recycling Toner Cartridges 2 2 o e Cleaning the Printer Cleaning Printer Components e Cleaning Spilled Toner Printer Maintenance 4 3 4 4 4 5 4 5 4 6 4 7 4 8 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 Est Life pgs ee Cartridge C3906A 2 500 When print becomes faint user replaceable shake cartridge to distribute remaining toner Transfer Roller RF5 1534 000CN 50 000 May affect print quality and
53. e 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 iv 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 sorted and cross referenced here by part number and name Regulatory In
54. e the Printer Covers Pickup Roller Assembly Figures 6 23 through 6 25 and Paper Feed Frame Figures 6 26 through 6 28 2 Looking at the back of the printer note the two small hook shaped release tabs on each end of the Transfer Roller guide Using a small flathead screwdriver carefully pry each tab outward to release it Figure 6 29 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 juaus9e doy pue jeAowaY Figure 6 29 Transfer Roller Guide Transfer Roller Removal Inside Back View 4 This exposes the Transfer Roller Gently pry the gear side of the Transfer Roller out first then slide the other side out of its socket WARNING Do not touch the Transfer Roller or otherwise allow it to be contaminated To reinstall The small metal spring should rest under the Transfer Roller Guide Removal and Replacement 6 33 Kick Plate 1 Remove the Printer Covers and the Pickup Roller Assembly Figures 6 23 and 6 24 2 Press the Separation Pad Figure 6 30 Allow the Kick Plate to pivot upward a spring underneath will push it up Lift the Kick Plate off its mounting pins Figure 6 30 Kick Plate Removal 6 34 Removal and Replacement Figure 6 31 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
55. ecking 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 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 BunoouseI qnoJ ZL 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 1 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 Ope
56. er Information PRINTER CONFIGURATION COPIES 1 ECONOMODE ORIENTATION PORTRAIT FONT NUMBER LINES OF TEXT 60 FONT SOURCE PAPER SIZE LETTER FONT HEIGHT MANUAL FEED OFF FONT PITCH DEVICE RESOLUTION 600 SYMBOL SET PC RE ON DEFAULT TYPEFACE Courier DENSITY 3 Tota Memory 1 MByte IMAGE ADAPT AUTO Power on Page Count o PAGE PROTECT AUTO Firmware Datecode 19950218 l O BUFFERING AUTO Image Adapt Used NO LA icono The self test page includes an internal font listing showing all 26 provided fonts 1 and a listing of the current printer configuration 2 If any fonts have been downloaded to the printer a second page will print Self test Page 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 14 Installation and Configuration Note Lm 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
57. es o o sa aaa nerse o e 6 41 Memory Door Guide eee 6 41 Motor zu Peme aea EUER UAR a Ao ee aa a s 6 42 DC Controllers a i a eae Da ac hk d hg ele des 6 43 Formatter Board e 6 46 Removal and Replacement 6 1 6 2 Removaland Replacement WARNING Caution Note Removal and Replacement Strategy 9 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 juaua9e doy pue enoulay 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
58. f paper Add paper O Printers EP door is open Close the door Toner cartridge is either missing Install a cartridge being careful to position it or not installed correctly correctly There is paper jammed in the Clear the jam and resume printing printer 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 Installation and Configuration 3 11 Table 3 1 Indicator Lights Continued 2 of 2 When this indicator Looks like this Blinking Error light blinking Page Too Briefly press and release the Front Panel Button Complex to continue printing There may be some data loss on the page The page may be too complex for the printers memory capacity Hint To avoid this in the future or the printer may not be able to create the image fast enough to 1 See your printer driver help for more keep pace with the engine suggestions regarding printer memory usage printing process 2 Reduce resolution to 300 dpi with your software 3 Install additional printer memory See chapter 6 for information on installing additional memory All off Sleep Mode Either the printer is No action is necessary When you press the in SleepMode or the power Front Panel Button send data to the printer or Source has been disabled open the printer
59. f the Printer o o 1 6 Front Door Assemblies o 00 eee ee ee ee 1 7 Back View of the Printer 2 000000 022 ee 1 8 Service Approach eene 1 9 Parts Exchange Program 2 ee es 1 9 Ordering Parts e bo be hk hd a de bo BR Gee ed ek 1 9 Ordering Consumables o oo 1 9 Ordering Related Documentation o o 1 9 Technical Assistance o e 1 11 HPASAP ai ni di a eii Sexe Mie Eo debuts order fh ie ete uberi cd ee 1 11 HPAUDIO LIPS esos sara a Roos RE eT 1 11 HP FIRST s gag eu tentes Reese dvd e EET utt 1 11 HP CompuServe Foru 1 11 Customer Information Centers North America Only 1 12 Customer Support Center Assist Line 2 2 0 1 12 North American Response Center 000 0 1 12 Warranty 4 um ea EXE R aaa ee A ee 1 13 Warranty Exclusions o e e 1 13 Warranty Limitations eA 1 14 Voltage Conversions ee ee 1 14 Product Information 1 1 1 2 Product Information Table 1 1 Table 1 2 Printer Features Printer Features HP LaserJet 5L C3941A Text amp Graphics Resolution 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
60. fer to Chapter 8 for a part number 6 20 Removaland Replacement Figure 6 17 Note pa 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 falls in place in front of the square tab Figure 6 17 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 juau99e doy pue enoulay Figure 6 18 Fuser Exit Roller Assembly 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 Pressure Roller Figure 6 16 and Face Up Face Down Lever Figure 6 17 2 Remove the gear from the left end of the roller shaft 3 Remove the Exit Roller Assembly by pressing the small white tab upward
61. formation Here are required statements regarding RFI and laser safety 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 2 1 Figure 2 2 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 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 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 HP LaserJet 5L Model and Serial Numbers 1 4 Front Side Views of the Printer 1 6 Front Door Assemblies o o o 1 7 Back View of the Printer o o 1 8 Printer Space Requirements o o 2 4 Toner Cartridge Distribution o o 2 6 Host Based Printer Settings Options 3 6 Host Based Printing Status o o a 3 7 PCL Printer Settings Options o 3 8 PCL Printing Status o o e 3 9 Selt test Page soca em a mE EA 3 14 Engine Test Button lee 3 16 Five Percent Text Coverage 000 4 4 Static Eliminator Teeth o o 4 8 Printer Functional Block Diagram
62. ge contents 9 9 9 23 a If any of the package contents are missing or damaged contact your HP dealer immediately The package should include the following Printer Power cord Software Disk 1 Intelligent Installer Host based software Host based status window Disk 2 True Type Screen Fonts 21 fonts Disk 3 PCL Driver PCL status window Disk 4 DOS utilities DOS Status Monitor Lotus and WordPerfect Drivers User s Manual Toner cartridge Installation and Configuration 3 3 Note Ne uU Un Ne Lm N Step 4 Install the toner cartridge Open the EP Cartridge door Remove toner cartridge from its box and cut it open Save the packing materials for possible cartridge storage Shake the cartridge vigorously to distribute the toner evenly inside the cartridge See Figure 2 2 Grasp the toner sealing tab on the right side of the cartridge Pull firmly to remove the strip of sealing tape Grasp the plastic cartridge body and slide the cartridge into the printer pushing it firmly into place Close the EP Cartridge door Step 5 Load paper Insert paper into the Input Paper Bin Adjust paper guides to fit the width of the paper snugly This avoids paper skewing Step 6 Attach the power cord Connect the power cord at the right rear of the the printer Since there is not a power switch plugging in the power cord is the only method to power the printer on and off All of the Control Panel
63. he 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 appendix B 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 high 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 e 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 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 Bb Bb Bb Bb AABbCc
64. hnical 1 11 AUDIO TIPS HP 1 11 B background scatter 7 16 black page 7 16 blank page all pages 7 18 occasional 7 18 bottom assembies memory door guide 6 41 bottom assemblies DC Controller 6 43 formatter PCA 6 46 motor 6 42 cable pinouts 7 30 cables 8 17 replaceable 8 6 capacities output tray 1 3 caution messages 6 3 CDRH B 1 Center 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 Compuserve 1 11 consumables ordering 8 4 printer 1 9 control panel 1 3 described 5 9 features 1 3 3 10 layout 3 10 messages 7 8 self test for printer errors 7 8 settings 5 9 using 3 10 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 10 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 5 2 4 distribution system AC 5 6 documentation related 1 9 1 10 doors 8 7 DRAM installation 6 5 dropouts 7 17 drum photosensitive 5 13 7 13 7 22 7 23 drum cleaning process described 5 12 5 13 drum conditioning described 5 1
65. igh Voltage Connection Points 2 of 2 Overriding PS204 Repetitive Image Defect Ruler Repetitive Image Defect Ruler Major Assembly Locations Covers and Doors Internal Components 1 of 3 Internal Components 2 of 3 Internal Components 3 of 3 DC Controller Formatter and Cables Pickup Roller Assembly Feed Assembly Separation Guide Assembly Delivery Assembly VCCI Statement Japan List of Tables Table 1 1 Printer Features o o e 1 3 Table 1 2 Paper Capacities and Sizes oo oo 1 3 Table 1 3 Performance Specifications o ooo 1 5 Table 1 4 Electrical Specifications oo ooo 1 5 Table 1 5 Acoustic Emissions o e e e 1 5 Table 1 6 Related Documentation o o e 1 10 Table 2 1 Environmental Requirements 2 3 Table 2 2 Printer Dimensions o e e 2 4 Table 3 1 Indicator Lights 1 of2 o o 3 11 Table 3 1 Indicator Lights Continued 2 0f2 3 12 Table 3 2 Front Panel Button Usage o o 3 13 Table 4 1 Life Expectancy of Consumables 4 3 Table 4 2 Cleaning Printer Components 4 7 Table 5 1 Solenoid and PhotosensorS o e 5 17 Table 5 2 Printer Timing llle 5 19 Table 7 1 Printer Status Messages
66. istance 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 and 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
67. itch SW201 5 5 self test page 3 14 sensors 5 17 separation guide assembly 8 22 sequence of operation 5 19 serial number information 1 4 service approach 1 9 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 2 6 SME Support Materials Europe 1 10 software installation 3 4 minimum requirements 3 5 solving print quality problems 7 14 space requirements 2 4 specifications electrical 1 5 paper 1 10 printer 1 5 2 3 staining 7 14 standard interfaces 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 also accessories and supplies surge protection 1 14 SW101 12 volt dc power shutoff microswitch 5 5 SW101 printer door microswitch 5 5 SW201 engine test microswitch 5 5 T technical assistance 1 11 test engine 3 16 toner 1 9 toner cartridge charging rollers B 3 check list 7 13 cleaning spills 4 8 defective 4 8 described 5 13 drum cleaning 5 12 5 13 drum conditioning 5 12 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 7 23 printer message 7 7 refilled 7 23 replacement 8 5 weight 7 13 toner ca
68. l Panel Printers from Program Manager and then deleting the printer driver Select HP 5L Uninstall from the HP LaserJet 5L Printer Group in Program Manager Installation and Configuration 3 9 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 ca READY Green These lights can be in only one of the following states OFF ON Blinking Coo am NV 3 10 Installation and Configuration 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 Ready Ready to print Blinking Print job in progress Let job finish printing mE Form Feed There is unprinted Briefly press the Front Panel Button to print the data in the buffer remaining data mH Blinking Manual Feed The printer is in Make sure you have the correct paper in the manual feed mode Single Sheet Input Bin and briefly press and release the Front Panel Button to print O os 93 25 ae ce 25 o 35 a On Error light continuously on mm Printer is out o
69. ler 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 e Replace the DC Controller 7 18 Troubleshooting 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 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 e Unload the pape
70. lifting the plastic tab up Figure 6 34 callout 1 and sliding it out the side of the Paper Feed Frame Figure 6 34 callout 2 Figure 6 34 Feed Assembly Removal 1 of 3 6 38 Removaland Replacement Figure 6 35 4 Remove the self tapping screw that holds the Feed Assembly in place Figure 6 35 callout 1 Feed Assembly Removal 2 of 3 Removal and Replacement 6 39 9 juaua9e doy pue exa0uidy 5 Remove the Feed Assembly 6 Turn the unit over Lift the paper feed roller out Figure 6 36 Figure 6 36 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 6 40 Removal and Replacement Figure 6 37 Bottom Assemblies Memory Door Guide 1 Remove the Printer Covers 2 Remove any extra memory 3 Two tabs hold the memory door guide on the printer chassis Press each tab inward Figure 6 37 4 Pull the memory door guide out Memory Door Guide Removal Removal and Replacement 6 41 9 juaua9e doy pue jeAowayY Motor 1 Remove the Printer Covers 2 Remove the motor connector Figure 6 38 callout 1 3 Remove the memory door guide to expose the two motor screws 4 Remove the motor screws Figure 6 38 callout 2 5 Lift the Motor out Figure 6 38 Motor Removal 6 42 Removaland Replacement
71. lights briefly illuminate then the green Ready light comes on Briefly press the Front Panel Button to generate a self test and verify that the printer is working Refer to the section Printing a Self Test Page later in this chapter for a detailed description of self test information Step 7 Install printing software The printing software package supplied with the HP LaserJet 5L printer provides many useful programs and utilities With this software you can Select paper size and orientation Select the number of copies you would like to print Adjust printing resolution brightness and contrast Learn tips and techniques for using this software This software allows you to install two types of printer drivers a host based driver and a PCL driver If your system meets the minimum requirements the host based software will be installed automatically 3 4 Installation and Configuration Note udo Nh WN If your system does not meet these minimum requirements only the PCL driver software will be installed Minimum System Requirements 486 or above PC with 8 Mbytes DRAM minimum Fully functional bi directional cable IEEE 1284 compliant cable recommended HP LaserJet 5L printer connected and powered on To install the printing software Turn on your computer Start Microsoft Windows and install Disk 1 into your disk drive A From Program Manager select File From the File menu choose Run Type A setup
72. ly 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 was 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 co
73. m 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 and defects during printing White areas on the page may indicate that the drum has been exposed to light for too long If white areas appear stop the printer and wait a few minutes This process should eliminate most defective images If not the toner cartridge may be placed in a dark environment for several days which may restore some life to the drum Troubleshooting 7 13 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 t
74. mum recommended circuit capacity for product Acoustic Emissions During Printing 5 5 Bels Sound Power Level per ISO 9296 During Standby amp SleepMode Silent Product Information 1 5 L uoneuuoju 1onpoJg Product Overview Figure 1 2 Front Side Views of the Printer 1 Paper Input Support 2 Paper Output Support 3 Paper Guides 4 Error top Light 5 Data middle Light 6 Ready bottom Light 1 6 Product Information 7 Front Panel Button 13 Front Output Slot face up 8 Paper Output Bin 9 Paper Path Lever 10 Serial and Model Number under printer 11 Paper Input Bin 12 Single Sheet Input Slot Product Information Figure 1 3 Front Door Assemblies 16 Transfer Roller 14 Paper Release Lever 17 EP Door 15 Toner Cartridge Compartment Product Information 1 7 T kj o E zi 9 iL Back View of the Printer sion Cover 20 Memory Expan ctor 18 Power Cable Conne tor 19 Parallel Cable Connec 1 8 Product Information 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 Par
75. n 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 tarkoitettuja 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 wa
76. n 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 NO 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 pl 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 m
77. n 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 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 S M JA AQO euonouny Functional Overview 5 11 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 Transferri
78. ner 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 While 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 Hewlett Packard has no control or process to ensure that a refilled toner cartridge functions at the high level of reliability of a new HP LaserJet toner cartridge Hewlett Packard also cannot predict what the long term reliability effect on the printer is from using different toner formulations found in refilled cartridges 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
79. ng Step 6 Image Fusing Figure 5 4 Electrostatic Latent Image Formation Block lt Flow Of Paper Direction Of Drum Rotation 3 Developing Developing Block Drum Cleaning Block Paper Delivery Manual Feeding Slot gt 9 m z 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 are 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 ap
80. ng the screws Note The tabs on the front end of the Delivery Assembly must fit under the sheet metal fuser plate below 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 lift up to remove it Figure 6 11 callout 3 Fuser Pressure Plate Removal Removal and Replacement 6 15 9 juaus9e doy pue jeAowaY 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 the spring is placed over the positioning pin callout 3 or the toner cartridge will not glide into place 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
81. nter status from the host computer 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 the Front Panel Button Resolution Enhancement REt The Formatter PCA contains circuitry for Resolution Enhancement technology REO 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 S M JA AQO euonouny Figure 5 3 Note 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 Normal Mode Medium Density EconoMode Medium Density EconoMode vs Normal Mode Ec
82. nter 1 10 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 Index 1 xapul Index image transferring 5 12 5 14 image writing 5 12 5 13 installation DRAM 6 5 installing memory cards 6 5 printer 3 3 software 3 4 interfaces standard 1 3 internal assemblies 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 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 12 O operating environment 2 3 operation basic sequence 5 19 orde
83. nter 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 The printer exits SleepMode and all of the lights power on when any of the following occur Functional Overview Note 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 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 i e switch SW101 is open Functional Overview 5 7 S M JA AQO euonouny 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
84. nter s paper movement S M JA AQO euonouny Functional Overview 5 5 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 dc as follows 5 V dc Formatter PCA Photosensors DC Controller Circuitry Laser Beam Detect Circuitry 12 V de Motor Scanner Motor Solenoid 12VA de 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 pri
85. 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 this 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 pri
86. onfiguration 3 5 If you would like to connect another device to the LPT port you have configured to use with the HP LaserJet 5L select the other device from the Microsoft Windows Control Panel and restart windows The HP LaserJet printer is capable of receiving and processing both PCL commands and host based generated data Host Based Printer Settings To select printer settings open the HP LaserJet 5L Printer group within Program Manager and select HP 5L Driver Settings The Printer Settings window will appear See Figure 3 1 Select from the following options Paper Select Page Orientation number of Copies Scaling Paper Size and Manual Feed Print Quality Select Printer Resolution Economode or Advanced Within Advanced set Resolution Enhancement Toner Density Brightness and Contrast Tips Review quick tips and techniques for using this software You can also select the About button from the main screen From the About screen select System Info to create a host based test page that contains all of the system parameters This test page will be saved as HPWTSTPG TXT Figure 3 1 i Com 1D Env 4 1 8 x 9 in a IDL Env 110 x 220 mm CS Env 162 x 229 mm Host Based Printer Settings Options Note Some applications e g Microsoft Word and CorelDRAW allow you to change your printer settings by selecting Print Setup and selecting the Setup option If you choose to change your p
87. onoMode 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 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 i
88. 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 S cannot continue until the door is closed and the cartridge is in proper position MAlAIOAQ euonouny Functional Overview 5 17 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 process and causes a paper jam indication on the front panel A paper jam can be detected under any of the following conditions Power On Jams Paper is present under either PS201 or PS203 at power on 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 even
89. or paper movement Paper Pickup Assembly RG5 1940 000CN 50 000 Look for glazing and or cracks Separation Pad amp RB1 5008 000CN 50 000 May affect paper movement Sub pads Heating Element May affect print quality 100 120 V 50 60 Hz RG5 1964 000CN 50 000 and or paper movement exchange part no Look for marks on pressure roller or upper Teflon sleeve 220 240 V 50 Hz RG5 1965 000CN exchange part no Pressure Roller RF5 1516 000CN The estimated toner cartridge life is based on Letter or A4 size paper with an average of 596 toner coverage and a medium density setting Toner cartridge life can be extended further by conserving toner using the printer s EconoMode feature Printer Maintenance 4 3 oo2ueuojule u U 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 596 of the page Figure 4 1 EKKZ 5 COVERAGE KKKEEEKKEEEEZZZE EKZEEZZEEEKKEEEZ po EKZEEZZEEEKKEEEZ KKKEEEKKEEEEZZZE KKEEKKZZZZZEEEKK KKKKEEEEEEZZZZEE EKZEEZZEEEKKEEEZ EKZEEEE EEEEZZ EEZZZZZ EEEEEZE EZZZKKK KEEEEE KZZZEE EEEEEZ ZZZKKKE Ki KKKEEEEEK ZZZEEE KKEKEEE ZZZ EEEKKKEE ZZKKEEEE KKKKKEE EEEE EEIZZZK E pm ZEEEEZ EEEEEKKK 2222 EEEEEE ZKZKZKZZK KKKKKKK 222222 EEE
90. ource Print a self test page see Chapter 3 to check that the printer recognizes the additional memory you 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 Covers and Doors Back Cover 1 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 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 using a flathead screwdriver to pry the two upper corners apart Figure 6 3 callout 1 6 To remove the cover pull it downward Figure 6 3 callout 2 Figure 6 3 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 there is a flex point Press the left tab inward to release it The right tab will fall out easily Figure 6 4 Figure 6 4 EP Doo
91. ove replace the toner cartridge This test is especially important if refilled toner cartridges have been used Troubleshooting 7 23 BunooysealqnolL Z 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 system is given in the table below Table 7 5 High Voltage Power Supply Check wes m 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 BunooysalqnolL Z Table 7 6 Paper Curl Paper curl is inherent to the laser printing processe
92. 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 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 BunoouseI qnoJ Z Inspect the cartridge for leaking toner through worn seals If the dru
93. plying 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 focusing 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 S 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 MAlAIOAQ jeuonoung Functional Overview 5 13 Step 4 Im
94. r Figure 6 7 callout 1 3 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 4 Lift the Control Panel out Control Panel Removal Removal and Replacement 6 11 9 yu w vsejd y pue ea0uidy Exit Roller Assembly 1 Remove Printer Covers 2 Grasp the 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 6 12 Removal and 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 Hand assembly must be removed to access any fuser components Delivery Assembly Removal 1 of 2 Removal and Replacement 6 13 9 juaua9e doy pue exa0uidy 3 Remove the 2 screws Figure 6 10 callout 1 Once the screws have been removed rotate the rear of the assembly up and lift it out of the printer Figure 6 10 Delivery Assembly Removal 2 of 2 Caution Upon replacement make certain that the positioning pins on the bottom of the assembly are properly positioned before tighteni
95. r Assembly Removal 6 8 Removaland 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 juaus9e doy pue enouiay Main Cover and Paper Input Assembly pa Remove the toner cartridge Remove memory door N 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 Lift the cover straight off 8 Remove the Paper Input Assembly Figure 6 6 callout 2 by rotating it forward and aun RU lifting it out 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 Input Feed Roller and Separation Pad 6 10 Removal and Replacement Figure 6 7 Internal Assemblies Control Panel 1 Remove the Printer Covers 2 Release the Control Panel connecto
96. r and re stack it in the input bin e 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 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 e Restack the paper in the paper input source and try reprinting the job Troubleshooting 7 19 BunoouseI qnoJ Z 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 e 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 ch
97. r 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 l 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 7 lf 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 P
98. r 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 precisely 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 S M JA AQO euonouny Figure 5 5 shows a simplified paper path and the locations of the photosensors and rollers Figure 5 5 Manual Inpu
99. rdance 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 Reorient or relocate the receiving antenna 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 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 COBB TIBIHEB UTER O RR L7 miiicds voci m n2asSEB Cre coumEmEUiETBE cL SERE SSRBSAEMHNBAS VCCI HESS LCS0Ed LOL EAENERSUX TVvVUUVavE OREBRUCC BHICA SSBZORALEATEMSVET AURA SIGE gt THILO RORWELTFEW VCCI Statement Japan B 4 Regulatory Information Index A AC power distribution 5 6 circuitry 5 6 accessories and supplies 8 5 acoustic emissions 1 5 assistance tec
100. rdingly e Some sharing devices or networks may generate a blank page as a separator Try connecting the printer directly to the computer 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 not 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 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 Make sure you removed the entire length of the sealing tape from the toner cartridge before you installed the cartridge The toner cartridge may be completely out of toner Replace the cartridge e 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 Control
101. ridge Photosensitive Drum 76 mm 3 0 in Repetitive Image Defect Ruler 7 28 Troubleshooting iagram D iring Main W 7 Troubleshooting pejre3su eSpuyueo da Pesoj9 J00q Jeueg o uo VOd 1eneuuoJ se euiBu3 e 1ozms apa eded 1ejonuoo od uL ud zoer voer YOLOINNOD JOVIIOA HOIH jquiessy 39qiu1uvo da BuisnJ uonensiBeu ino Jedeg Ajuo yo OLL zoind Main Wiring Diagram Figure 7 9 Troubleshooting 7 29 Table 7 7 7 30 Troubleshooting Cable Pinouts J401 pin 1 Motor Drive Signal J401 pin 2 Motor Drive Signal J401 pin 3 Motor Drive Signal J401 pin 4 Motor Drive Signal J204 pin 1 J204 pin 2 Solenoid SL1 Pickup Drive J202 pin 1 J202 pin 2 J202 pin 3 PAPSENS L when PS202 detects paper J202 pin 4 45V J202 pin 5 GND J202 pin 6 PISNS L when PS203 detects paper J207 pin 2 Scanner tachometer pulses J207 pin 4 L to rotate scanner motor pq opni E oo Meepna a o oo m pn moasa E S o EA Nep EA G Table 7 8 Cable Pinouts H when cartridge is not installed or the front door is open at PS204 Fusing temperature feedback Fusing assembly drive voltage Fusing assembly drive voltage Troubleshooting 7 31 BunooysalqnolL Z 7 32 Troubleshooting Parts and Diagrams Contents How to Use the Part Lists and Diagrams llle 8 3 Ordering Parts cin A federa cue KR x 8 3 Ordering Consumables o
102. ring related 1 9 Index 2 ordering consumables 8 4 ordering parts 1 9 8 3 output components 8 14 overcurrent dc protection circuitry 5 6 devices 5 6 protection 5 6 overvoltage devices 5 6 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 messages 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 10 ordering 1 9 8 3 Parts Direct Ordering 8 3 PDO Parts Direct Ordering 1 10 8 3 phone numbers 8 4 SME Support Materials Europe 1 10 Parts 1 9 parts and diagrams 8 1 8 26 Parts Direct Ordering 8 3 parts lists 8 3 PDO Parts Direct Ordering 1 10 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 5 13 photosensitive drum conditioning 5 12 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 14 power control 1 3 power distribution AC 5 6 power save mode
103. rinter settings from your application the HP window will appear just as it would from Program Manager 3 6 Installation and Configuration Host Based Printing Status To view your printer s status open the HP LaserJet 5L Printer group within Program Manager and select Status Window As shown in Figure 3 2 below the status window reports your printer s current status In this case the printer is Ready i x Ec Figure 3 2 Printer View Options Help Completed MS DOS Print Job Printer Ready a Host Based Printing Status This host based status window is only compatible with the HP LaserJet 5L If you have loaded both the host based and PCL software both cannot be active for the HP LaserJet 5L at the same time even though both software programs have their own unique status windows See Using Host Based and PCL Drivers Together later in this chapter PCL Printer Driver This printer driver has been updated from the HP Laser Jet 5P version 1 0 printer driver This software is compatible with the HP LaserJet 4 family drivers Installation and Configuration 3 7 uoneanBiuo pue uonejeisu PCL Printer Settings To change printer settings select Control Panel Printers HP LaserJet 5L PCL Setup The printer settings window will appear See Figure 3 3 Select from the following options Paper Select Paper Size Paper Source manual feed Copies Orientation portrait or landscape and
104. rol Panel self test procedure replace the Formatter PCA Paper Path and Components Figure 7 1 PAPER DELIVERY SENSOR signal POSNS MOTOR DRIVE signal IVA MA MB IVB A PAPER PICK UP SENSOR signal Face up Face down Delivery Roller Face down Delivery Fusing Unit paper Delivery Exit Sensor Roller L Paper Path and Components Photo sensitive Drum Transfer Roller Sensor K UP SOLENOID DRIVE signal Pic Paper Input Manual Bin Input PAPER OUT SENSOR signal PAPERSNS Sensor Feed Roller Troubleshooting 7 5 BunooysealqnolL Z DC Controller Diagram Figure 7 2 304 J208 J209 iso J207 ja E JE 401 n i i SW101 J202 FU10 FUTOP O J204 0 Formatter INL101 Q O TR 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 J302 Transfer Roller Contact J401 Motor J304 Prim
105. rranty h l l l 39 This warranty gives you specific legal rights You may also have other rights which 92 may vary from area to area 3c 22 Hewlett Packard warrants the 5L LaserJet printer against defects in materials and e 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 protector 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
106. rtridge microswitch SW101 5 5 toner safety B 3 tools required 6 4 top assemblies feed assembly 6 38 kick plate 6 34 laser scanner assembly 6 24 paper feed frame 6 30 pickup roller assembly 6 27 separation pad 6 36 solenoid 6 25 transfer roller 6 33 transferring process 5 14 troubleshooting 7 1 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 Index 3 xapul Index print quality problems 7 14 printer errors 7 7 troubleshooting checks 7 21 troubleshooting flowchart 7 3 troubleshooting tools 7 27 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 14 W WAIT printer timing 5 19 warning messages 6 3 warranty exclusions 1 13 limitations 1 14 start date 1 14 voltage 1 14 warranty 1 13 wiring diagram 7 29 wiring diagrams main 7 29 writing process 5 13 Index 4
107. s 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 following table Paper Curl Troubleshooting Possible Cause Recommended Action Paper Path Try using the front output slot to shorten and simplify 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
108. sor Assembly Interlock EP amp cover E Parts Index A 3 Table A 1 A 4 Parts Index Alphabetical Parts List continued Description pan 5 z Lise 100 E Lie 400 E Laser Cable RG5 2035 000CN Laser Scanner Exchange C3941 69003 es ESA Laser Scanner New Left Leg Left Pressure Roller Housing Left Sub Pad Assembly Main Cover Main Motor Main Separation Pad Main Separation Pad Spring Paper Pickup Roller Cable IRGs 2029 0000N 86 Pickup Roller Roller Assembly Pickup Roller Roller Bushing Pickup Roller Roller Grounding Clip Pressure Roller Bushing Pressure Roller Gear Pressure Roller Grounding Guide Right Pressure Roller Housing 13 19 16 13 11 4 7 2 15 13 1 11 11 8B 5 7 1 18 4 5 1 4 2 11 14 501 502 17 12 Table A 1 Alphabetical Parts List continued Description Right Sub Pad Assembly Rocker Arm Rocker Holder Scanner Cable Screw Screw Screw Screw Screw Screw Screw Screw Screw Screw Screw Screw DC Controller PCA Screw DC Controller PCA Screws Sensor Arm Sensor Holder Separation Guide Assembly Separation Pad Connector Seperation Pad Assembly Solenoid Spur Assembly Inside Spur Assembly Outside Thermistor Cable Transfer Guide Assembly Transfer Roller Transfer Roller Guide Rasaweowow o keeren e keen ss buscamos es gt woe xy es gt Resswowow eo Posao se Parts Index A
109. t Slot Paper Input Paper Output Bin Bin Toner Cartridge Paper Out Sensor Delivery PS202 Roller 41 Pick up 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 Figure 5 6 Pick up Roller Assembly Laser Scanner Heating Element 110v 220v DC Controller 110v 220v PS201 Formatter SW201 Solenoid and Sensors Table 5 1 Solenoid and Photosensors No Name 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 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 PS203 Paper Registration Sensor Detects the leading and trailing edges of the paper Synchronizes the photosensitive drum and the top of the paper PS204 Door Open Cartridge Sensor Detects whether printer door is
110. t numbers for all FRUs are located in Chapter 8 of this manual Parts Exchange Program HP offers remanufactured assembles for some selected parts These are identified in Chapter 8 and can be ordered through HP s Parts Direct Ordering or Parts Center Europe PCE Ordering Parts Field replaceable part numbers are found in Chapter 8 of this manual Replacement parts may be ordered from HP s Service Materials Organization SMO Parts Direct Ordering or Support Materials Europe SME 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 PDO Parts Direct Ordering 1 800 227 8164 U S only e HP s Distribution Center HPD 970 339 7009 U S only SME Product Information 1 9 L uoneuuoju 1onpoJg Table 1 6 Related Documentation mener suo sue nes HP LaserJet Family Quick Reference Service Guide 5010 3991 x x HP LaserJet 5L Printer C3941 90901 X User s Manual HP PCL5 Printer Language Technical 5010 3994 X X Reference Information Package HP LaserJet Printer Family Paper 5010 3990 X X X Specifications Guide LaserJet Basic Hardware Training Course 5961 0880 EJEA HPLJ 5L Hardware Training Kit C394
111. t 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 White areas on the page may indicate that the drum has been exposed to light for too long If white areas appear stop the printer and wait a few minutes This process should eliminate most defective images If not the toner may be placed in a dark environment for an extended period of time which may restore some life to the drum 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 Installation and Configuration Contents Unpacking and Installation ees 3 3 Step 1 Choose the best location ooo o 3 3 Step 2 Unpack the printer 2 2 2 0 2 200 0000 3 3 Step 3 Check package contents o ooo oo 3 3 Step 4 Install the toner cartridge oo ooo 3 4 Step 5 Load paper lt s eue oo 3 4 Step 6 Attach the power cord ooo o 3 4 Step 7 Install printing software llle 3 4 Host Based Printer Driver o o o e 3 5 Host Based Printer Settings o e e
112. ter 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 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 uoneunuojul lojenbay 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 acco
113. 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 shall be deemed printer abuse and all repairs thereafter will be billed on a time and materials basis Product Information 1 13 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 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 app
114. ts 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 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 S M JA AQO euonouny puooes yun iid S ico Figure 5 7 snonunuoo sjaays azis p y OM Bunulid 10 yey Buil y 9v seig Duidojeneq LL EE IE MEE uen mes via I T1 9 L NO
115. unctions ee ee 5 3 DC Controller Power System lees 5 4 Print Engine Control System lee 5 5 Power System on DC Controller PCA o oo o 5 6 Formatter System use RR RE X oem e Da 5 8 ug TTE 5 8 Read Only Memory ROM leen 5 8 Random Access Memory RAM o 5 8 Parallel Interface i once era he da dl GIA Wer CY d 5 8 Control Panel 22h 5 9 Resolution Enhancement RED 5 9 EconoMode llle 5 10 Memory Enhancement technology MEt 5 10 Enhanced VO 2 len 5 11 Page Protect imac s Ro ee ee AUR har a ee ars 5 11 PJL Overview elles 5 11 Image Formation System 2 2 2 20 e 5 12 Toner Cartridge eee 5 13 Step 1 Drum Cleaning ellen 5 13 Step 2 Drum Conditioning ellen 5 13 Step 3 Image Writing leen 5 13 Step 4 Image Developing o oo o 5 14 Step 5 Image Transferring o o a 5 14 Step 6 Image Fusing o o a 5 14 Paper Feed System o saporon See SS la oe eR ea ae 5 15 PaperJamDetection e 5 18 Basic Sequence of Operation le 5 19 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
116. untry of final destination 1 14 Product Information Site Requirements Contents Site Requirements n ea n eaa e e a a a A 2 3 Operating Environment e 2 3 Printer Space Requirements o a 2 4 The HP C3906A Toner Cartridge aooaa aa 2 5 Storage Conditions o o o 2 5 Storing Opened Toner Cartridges o oo o 2 5 Toner Cartridge Handling Suggestions o o 2 5 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 amp Cartridge Operating 50 to 90 5 F 10 to 32 5 C 32 to 104 F 0 to 40 C C ZU o aa Humidity 20 to 80 RH 10 to 80 RH c with no condensation with no condensation z 3 0 E E l Consider the following points before installing the printer o Install in a well ventilated dust free area Install on a hard flat and continuous surface with all four printer feet level Do not install on carpet or other soft surfaces Ensure adequate power is supplied Printer power requirements are listed under Specifications in Chapter 1 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
117. ure 5 6 Paper Registration Flag PS203 See Figure 5 6 Exit Sensor Flag PS201 See Figure 6 18 Door closed EP Cartridge Flag PS204 See Figure 5 6 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 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 BunoouseI qnoJ Z 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 Table 7 4 Service and Error Messages 1 of 3 ROM RAM Error An error was found with 1 Power cycle the printer by unplugging the printer the ROM or RAM The printer believes that and plugging it back in If this doesn t clear the error
118. w the voice prompts to enter HP FIRST HP CompuServe Forum CompuServe members can download a variety of support materials including product data sheets software application notes and printer drivers for many popular software applications Members may also post and reply to questions in an interactive format To access the HP Forum type GO HP at any prompt For more information or to join CompuServe call 1 800 524 3388 Product Information 1 11 Customer Information Centers North America Only For presales information contact the nearest Hewlett Packard Customer Information Center 1 800 752 0900 in North America Customer Support Center Assist Line The HP Customer Support Center 208 323 2551 is available to answer technical questions regarding setup configuration installation and operation of HP printers in the PC and Macintosh environments The CSC Assist line is available weekdays from 6 AM to 6 PM and Saturdays 9 AM to 4 PM Mountain Time Questions relating to operating systems such as MS DOS and UNIX your network configuration or network operating system cannot be answered by the Center and should be referred to your authorized reseller North American Response Center The North American Response Center NARC is 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 1 12 Product Information Wa
119. wlett 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 A 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 Information Center 800 752 0900 Refer to Related Documentation in Chapter 1 for documentation and training media product numbers Accessories and Supplies 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 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 sueibeig pue sued Common Hardware Table 8 2 Common Fasteners Used in the Printer o Screw Machine Trus Head M3x4 M3x6 M amp x8 Screw Star 3x6 Screw Self tap 4x10 Screw Hex head 3x8 Screw Hexhead 3x6 m 3x8 3x10

HP LaserJet 5L (C3941A)

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