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hp color LaserJet 3500/3550 and 3700 series printer
service
HP Color LaserJet 3500/3550 and 3700 series printers
Service Manual
© 2004 Copyright Hewlett-Packard Development Company, L.P. Reproduction, adaptation or translation without prior written permission is prohibited, except as allowed under the copyright laws. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Part number: Q5990-90939 Edition 1, 10/2004
Trademark Credits Microsoft® is a U.S. registered trademark of Microsoft Corporation. MS-DOS® is a U.S. registered trademark of the Microsoft Corporation. *Pantone®, Inc.'s check-standard trademark for color. PostScript® is a trademark of Adobe Systems Incorporated. TrueTypeTM is a U.S. trademark of Apple Computer, Inc. UNIX® is a registered trademark of The Open Group. Windows, MS Windows, and Windows NT are U.S. registered trademarks of Microsoft Corporation.
Conventions
This manual uses the following conventions: Color is used to emphasize items that are important to the material under discussion. Bold is used for menu items to click and for emphasis, particularly in situations where italic type would be confusing. Italic type is used to indicate related documents or emphasis. DISPLAY type indicates text as seen on the printer control panel display. Commands you use on a computer keyboard or on the printer control panel are shown in Keycap. Two examples are MENU and STOP. COURIER type indicates text that you type on a computer keyboard exactly as shown. NOTE CAUTION WARNING! Notes contain important information set off from the text. Caution messages alert you to the possibility of damage to equipment or loss of data. Warning messages alert you to the possibility of personal injury.
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Table of contents
1 Printer description
Chapter contents ....................................................................................................................... 1 Printer configurations ................................................................................................................3 HP Color LaserJet 3500/3550 printer .................................................................................3 HP Color LaserJet 3500n/3550n printer .............................................................................3 HP Color LaserJet 3700 printer ..........................................................................................4 HP Color LaserJet 3700n printer ........................................................................................4 HP Color LaserJet 3700dn printer ......................................................................................5 HP Color LaserJet 3700dtn printer .....................................................................................5 Printer features ..........................................................................................................................6 Printer assemblies .....................................................................................................................9 Front and rear features ....................................................................................................... 9 Site requirements ....................................................................................................................11 Space requirements .........................................................................................................11 Electrical specifications ....................................................................................................12 Environmental specifications ............................................................................................13 Printer specifications ...............................................................................................................15 Duty cycle .........................................................................................................................15 Print media specifications .......................................................................................................16 Supported media weights and sizes .................................................................................16 Hewlett-Packard warranty statement ......................................................................................19 HP's Premium Protection Print Cartridge Warranty Limited Warranty Statement ..................20 Premium Protection Warranty Color LaserJet Image Fuser Kit and Image Transfer Kit Limited Warranty Statement ...........................................................................................21 Identification ............................................................................................................................22 Model and serial numbers ................................................................................................22 Power and regulatory information ....................................................................................22 Selecting paper .......................................................................................................................24 Paper to avoid ...................................................................................................................24 Paper that can damage the printer ...................................................................................24 Printing on special media ........................................................................................................ 6 2 Transparencies ................................................................................................................. 6 2 Glossy paper .....................................................................................................................26 Colored paper ................................................................................................................... 6 2 Envelopes ......................................................................................................................... 7 2 Labels ...............................................................................................................................27 Heavy paper .....................................................................................................................28 HP LaserJet Tough paper ................................................................................................28 Preprinted forms and letterhead .......................................................................................28 Recycled paper .................................................................................................................29 Media weight .....................................................................................................................29 Environmental product stewardship program .........................................................................31 Protecting the environment ...............................................................................................31 Declaration of Conformities .....................................................................................................34 Safety statements ...................................................................................................................37 Laser safety statement .....................................................................................................37
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Canadian DOC regulations ...............................................................................................37 EMI statement (Korea) .....................................................................................................37 VCCI statement (Japan) ...................................................................................................37 Laser statement for Finland .............................................................................................. 8 3 FCC Regulations ..................................................................................................................... 9 3
2 Service approach
Chapter contents ..................................................................................................................... 1 4 Search approach ..................................................................................................................... 2 4 Parts and supplies ...................................................................................................................43 Ordering parts ...................................................................................................................43 Ordering supplies ..............................................................................................................43 Exchange program ...........................................................................................................44 Supplies ............................................................................................................................ 4 4 World Wide Web ...............................................................................................................44 HP service parts information CD-ROM ............................................................................44 HP support assistant CD-ROM ........................................................................................44 Customer care reseller sales and service support center ................................................44 Ordering related documentation and software .................................................................45 HP maintenance agreements .................................................................................................46 On-site service agreements ..............................................................................................46
3 Installation and configuration
Chapter contents ..................................................................................................................... 7 4 Checking the package contents .............................................................................................. 8 4 Unpacking the printer .............................................................................................................. 0 5 Installing the print cartridge ..................................................................................................... 5 5 Loading paper into Tray 3 (optional) .......................................................................................57 Loading paper into Tray 2 .......................................................................................................59 Loading paper into Tray 1 (optional procedure) ......................................................................61 Connecting power ...................................................................................................................62 Installing a new control panel overlay (optional) .....................................................................63 Testing the printer operation ...................................................................................................64 Using PowerSave Time ...........................................................................................................65 To set PowerSave Time ...................................................................................................65 To disable/enable PowerSave ..........................................................................................65 USB configuration ...................................................................................................................66 Connecting the USB cable ...............................................................................................66 Parallel configuration (HP Color LaserJet 3700 series printer only) .......................................67 Network configuration .............................................................................................................68 Enhanced I/O (EIO) configuration (HP color LaserJet 3700 series printer only) ....................69 HP Jetdirect print servers .................................................................................................69 Available enhanced I/O interfaces ....................................................................................69 NetWare networks ............................................................................................................70 Windows and Windows NT networks ...............................................................................70 AppleTalk networks ..........................................................................................................70 UNIX/Linux networks ........................................................................................................70 Printer software ....................................................................................................................... 1 7 Printer drivers ...................................................................................................................71 Software for networks ....................................................................................................... 2 7 Utilities ..............................................................................................................................73 Setting security on the printer .................................................................................................76 Locking the control panel ..................................................................................................76 Using an ASCII PJL escape sequence to set security .....................................................77 Printer memory for the HP Color LaserJet 3700 series printer ...............................................78
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Installing memory and font DIMMs .........................................................................................79 Enabling memory ..............................................................................................................83 Enabling the language font DIMM (HP color LaserJet 3700 only) ...................................83 Checking DIMM installation (HP color LaserJet 3700 only) .............................................84 Installing an HP Jetdirect print server card in the HP color LaserJet 3700 series printer ......85 To install the HP Jetdirect print server card .....................................................................85 Installing an HP Jetdirect en3700 external print server ..........................................................88
4 Printer maintenance
Chapter contents ..................................................................................................................... 1 9 Cleaning the printer and accessories ......................................................................................92 Cleaning spilled toner .......................................................................................................92 Managing supplies ..................................................................................................................94 Supplies life ......................................................................................................................94 Approximate replacement intervals for supplies for the HP Color LaserJet 3500 series printer ..................................................................................................................94 Approximate replacement intervals for supplies for the HP Color LaserJet 3550/3700 series printer ................................................................................................94 Locating supplies and parts ....................................................................................................96 Replacing supply items ...........................................................................................................97 Replacing the transfer unit ................................................................................................99 Replacing the fuser and pickup roller .............................................................................103
5 Theory of operation
Chapter contents ................................................................................................................... 13 1 Basic operation .....................................................................................................................114 Operation sequence .......................................................................................................114 Power-on sequences ...................................................................................................... 16 1 Engine control system ...........................................................................................................119 DC controller PCB ..........................................................................................................119 Low-voltage power supply circuit ...................................................................................126 Low-voltage power supply circuit ...................................................................................131 Laser/scanner system ........................................................................................................... 39 1 Laser control ................................................................................................................... 40 1 Scanner motor control ....................................................................................................144 Image formation system ........................................................................................................146 Print process ...................................................................................................................147 Developing section .........................................................................................................156 Cartridge cleaning control ...............................................................................................163 Transfer section .............................................................................................................. 64 1 ITB cleaning control ........................................................................................................ 67 1 Waste toner full detection ...............................................................................................167 Transfer (ITB) unit detection ...........................................................................................168 Transfer unit life detection ..............................................................................................169 ITB self-aligning mechanism ..........................................................................................170 Primary transfer roller engaging/disengaging control ....................................................171 Secondary transfer roller engaging/disengaging control ................................................172 Secondary transfer roller engaging/disengaging detection ............................................173 Color misregistration control ........................................................................................... 74 1 Image stabilization control ..............................................................................................177 Pickup/feed system ............................................................................................................... 82 1 Pickup/feed unit ..............................................................................................................184 Fuser/delivery unit ..........................................................................................................189 Duplexing feed unit (HP 3700 printer only) ....................................................................192 Jam detection .................................................................................................................195
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Paper feeder ..........................................................................................................................197 Pickup/delivery sequence ............................................................................................... 98 1 Paper jam detection ........................................................................................................199
6 Removal and replacement
Chapter contents ................................................................................................................... 01 2 Introduction ............................................................................................................................204 Removal and replacement strategy ................................................................................204 Repair notices .................................................................................................................204 Caution regarding electrostatic discharge (ESD) ...........................................................204 Required tools .................................................................................................................204 Types of screws ..............................................................................................................205 Supplies .................................................................................................................................207 Print cartridges and transfer unit ....................................................................................208 Covers ................................................................................................................................... 09 2 Front door removal .........................................................................................................209 Left cover removal ..........................................................................................................210 Left front cover removal .................................................................................................. 11 2 Right cover removal ........................................................................................................213 Top cover removal .......................................................................................................... 14 2 Upper rear door removal ................................................................................................214 Rear cover removal ........................................................................................................215 Lower rear door (rear output bin) removal .....................................................................215 Tray 1 (multipurpose) removal .......................................................................................216 Main Assemblies ................................................................................................................... 17 2 Transfer unit removal ......................................................................................................218 Print cartridge removal ...................................................................................................219 Fuser removal .................................................................................................................220 Face-down delivery assembly removal ..........................................................................221 Laser/scanner assembly removal ...................................................................................222 Image drive assembly removal .......................................................................................223 Developing engaging drive assembly removal ...............................................................225 Pick-up/feed assembly removal .....................................................................................225 Main assembly parts .............................................................................................................236 Tray 1 pick-up roller removal ..........................................................................................237 Tray 1 separation pad removal .......................................................................................237 Tray 2 pick-up roller removal ..........................................................................................238 Tray 2 separation pad removal .......................................................................................238 Secondary transfer charging roller removal ...................................................................239 Fuser sleeve unit removal ..............................................................................................239 Pressure roller removal ..................................................................................................239 Main thermistor/sub-thermistor removal .........................................................................239 Thermoswitch removal ...................................................................................................239 Feed guide unit removal .................................................................................................240 Swing guide removal, right .............................................................................................242 Swing guide removal, left ...............................................................................................245 Switches ................................................................................................................................ 50 2 Door Switch (SW1) removal ...........................................................................................250 Test print switch (SW1001) removal ..............................................................................251 Power switch (SW3001) removal ...................................................................................251 Sensors .................................................................................................................................252 Tray 1 (multipurpose tray) paper sensor (PS1) removal ................................................253 Tray 2 (cassette) paper sensor (PS2) removal ..............................................................253 Registration paper sensor (PS4) removal ......................................................................254 Media sensor (PS5) removal ..........................................................................................255
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Fuser front paper sensor (PS6) removal ........................................................................256 Fuser delivery paper sensor (PS7) removal ...................................................................256 Face-down delivery paper sensor (PS8) removal ..........................................................257 Reversed paper sensor (PS9) removal (HP 3700 only) .................................................257 Duplex feed delivery paper sensor (PS10) removal (HP 3700 only) .............................258 Rear output bin paper sensor (PS11) removal ...............................................................259 Color misregistration sensor (PS12) removal ................................................................260 Waste toner level sensor (PS13) removal ......................................................................260 Developing engaging sensor (PS14) removal ................................................................261 Environment sensor (PS15) removal .............................................................................261 Secondary transfer roller engaging sensor (PS16) removal ..........................................262 Solenoids and Clutches ........................................................................................................263 Tray 1 (multipurpose tray) pick-up solenoid (SL1) removal ...........................................263 Tray 2 pick-up solenoid (SL2) removal ...........................................................................264 Secondary transfer roller engaging solenoid (SL4) removal ..........................................265 Duplex feed solenoid (SL5) removal (HP 3700 only) .....................................................266 Registration clutch (CL1) removal ..................................................................................266 Black (K) development clutch (CL2 - image drive) removal ...........................................267 Developing engaging drive clutch (CL3) removal ..........................................................268 Motor and fans ......................................................................................................................269 Feed motor (M1) removal ...............................................................................................269 Delivery motor (M2) removal ..........................................................................................271 Drum motor (M3) removal ..............................................................................................271 Developing motor (M4) removal .....................................................................................273 Primary transfer roller engaging motor (M5) removal ....................................................274 Exhaust fan (FAN1) removal ..........................................................................................277 Circuit Boards ........................................................................................................................278 DC controller PCB removal ............................................................................................278 Formatter PCB removal .................................................................................................. 79 2 High-voltage power supply PCB removal .......................................................................281 Low-voltage power supply PCB removal .......................................................................285 Memory controller PCB removal ....................................................................................286 Control Panel PCB removal ............................................................................................287 Miscellaneous parts ..............................................................................................................288 Swing rod guide, left removal .........................................................................................288 Swing rod/lock guide, right removal ...............................................................................288 Transfer contact assembly removal ...............................................................................288 Developing contact assembly .........................................................................................288 Tray 2 (cassette) parts removal ............................................................................................291 Tray 2 (cassette) .............................................................................................................291 Cassette (Tray 2) guide, right, removal ..........................................................................291 500-Sheet paper feeder (Tray 3) covers ...............................................................................296 Front cover removal - 500-sheet paper feeder ...............................................................296 Right cover removal - 500-sheet paper feeder ...............................................................297 Left cover removal - 500-sheet paper feeder .................................................................297 500-Sheet paper feeder internal parts ..................................................................................298 Pick-up roller removal - 500-sheet paper feeder ............................................................298 Separation pad removal - 500-sheet paper feeder ........................................................299 Pick-up drive unit removal - 500-sheet paper feeder .....................................................299 500-Sheet paper feeder sensor/solenoid/motor/PCB ...........................................................300 500-Sheet paper feeder PCB removal - 500-sheet feeder ............................................300 Pick-up clutch (CL4) removal - 500-sheet feeder ...........................................................301 Pick-up solenoid (SL3) removal - 500-sheet feeder .......................................................301 Paper sensor (PS3) removal - 500-sheet feeder ...........................................................302
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7 Troubleshooting
Chapter contents ................................................................................................................... 03 3 Introduction ............................................................................................................................306 Troubleshooting process .......................................................................................................307 Pre-troubleshooting checklist .........................................................................................307 Troubleshooting flowchart ..............................................................................................308 Troubleshooting power-on .............................................................................................. 10 3 Printer error troubleshooting .................................................................................................312 Status messages ............................................................................................................312 Warning messages ......................................................................................................... 12 3 Error messages ..............................................................................................................312 Critical error messages ...................................................................................................312 Alphabetical printer messages .......................................................................................312 Numerical printer messages ........................................................................................... 27 3 Replacement parts configuration ..........................................................................................352 Formatter and DC Controller replaced at the same time ...............................................352 Formatter (New) replacement configuration ...................................................................352 Formatter (previously installed in another printer) replacement configuration ...............353 DC Controller (New) replacement configuration ............................................................353 DC Controller (previously installed in another printer) replacement configuration ........354 Media sensor (PS5) replacement configuration .............................................................354 Color Misregistration Sensor (PS12) replacement configuration ...................................355 Laser/scanner Assembly replacement configuration .....................................................355 Fuser replacement configuration ....................................................................................355 Transfer unit (ITB assembly) replacement configuration ...............................................355 Paper path troubleshooting ................................................................................................... 56 3 Paper path jam areas .....................................................................................................357 Paper jam error message ...............................................................................................357 Paper path areas jam troubleshooting ...........................................................................360 Paper jam recovery feature ............................................................................................377 Avoiding paper jams .......................................................................................................377 General paper path troubleshooting ...............................................................................379 Persistent jams ...............................................................................................................380 Image formation troubleshooting ..........................................................................................381 Print quality problems associated with media ................................................................381 Overhead transparency defect .......................................................................................381 Print quality problems associated with the environment ................................................382 Print quality problems associated with paper jams ........................................................382 Print quality problems associated with toner buildup .....................................................382 Print quality troubleshooting pages ................................................................................383 Calibrating the printer .....................................................................................................383 Using Color ...........................................................................................................................384 HP ImageREt 2400 .........................................................................................................384 Paper selection ............................................................................................................... 84 3 Color options (available for the HP Color LaserJet 3700 series printer) ........................384 Standard red-green-blue (sRGB) ...................................................................................384 Printing in four-colors [CMYK (available for the HP Color LaserJet 3700 series printer) .........................................................................................................................385 CMYK ink set emulation (PostScript only) .....................................................................385 Managing color ......................................................................................................................386 Print in Grayscale ...........................................................................................................386 Automatic or manual color adjustment ...........................................................................386 Manual color options ......................................................................................................386 Matching colors ..................................................................................................................... 88 3 Swatch book color matching (HP Color LaserJet 3700 series printer only) ...................388 Adjusting color balance ..................................................................................................389
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Image defects ........................................................................................................................390 Light image ....................................................................................................................391 Light color .......................................................................................................................392 Dark image ...................................................................................................................392 Dark color .......................................................................................................................393 Completely blank image .................................................................................................393 All black or solid color .................................................................................................... 93 3 Dots in vertical lines .......................................................................................................394 Dirt on back of paper ......................................................................................................394 Dirt on front of paper .......................................................................................................394 Vertical lines ..................................................................................................................395 White vertical lines ..........................................................................................................395 Horizontal line ................................................................................................................. 96 3 White horizontal line .......................................................................................................396 Color missing .................................................................................................................. 97 3 Blank spots .....................................................................................................................397 Poor fusing ....................................................................................................................397 Image distortion ..............................................................................................................398 Color misregistration .......................................................................................................398 Smearing ........................................................................................................................399 Misplaced image .............................................................................................................399 Reversed color ................................................................................................................400 Snail tracks .....................................................................................................................400 Repetitive defects troubleshooting ........................................................................................ 01 4 Interface troubleshooting ......................................................................................................403 Communications checks .................................................................................................403 EIO troubleshooting ........................................................................................................ 03 4 AUTOEXEC.BAT standard configurations .....................................................................404 Printer Job Language (PJL) commands .........................................................................404 @PJL COMMENT ..........................................................................................................405 @PJL INFO CONFIG .....................................................................................................405 @PJL INFO ID ................................................................................................................405 @PJL INFO USTATUS ..................................................................................................405 @PJL INFO PAGECOUNT ............................................................................................405 @PJL JOB ...................................................................................................................... 06 4 @PJL EOJ ...................................................................................................................... 06 4 @PJL ECHO ...................................................................................................................406 @PJL USTATUS JOB=ON/OFF ....................................................................................406 @PJL USTATUSOFF ..................................................................................................... 06 4 Control panel troubleshooting ...............................................................................................407 Printing a menu map ......................................................................................................407 Information menu ............................................................................................................407 Paper handling menu .....................................................................................................408 Configure device menu ...................................................................................................409 Print quality menu ........................................................................................................... 11 4 System setup menu ........................................................................................................ 14 4 I/O menu ......................................................................................................................... 18 4 Resets menu ...................................................................................................................419 Diagnostics menu ...........................................................................................................419 Service menu ..................................................................................................................420 Tools for troubleshooting ......................................................................................................422 Embedded Web server (HP Color LaserJet 3700 series printer only) ...........................422 HP Toolbox ..................................................................................................................... 24 4 Printer configuration page ..............................................................................................428 Supplies status page ......................................................................................................429 Usage page (HP 3700 only) ...........................................................................................430
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Event log .........................................................................................................................431 Diagnostics ............................................................................................................................433 Diagnostics flowchart ......................................................................................................433 Engine diagnostics .........................................................................................................434 Diagnostics from the Control Panel ......................................................................................436 Printer display menu ....................................................................................................... 36 4 Diagnostics test menu ....................................................................................................436 Paper Path Test ..............................................................................................................439 Component Test special mode test .............................................................................439 Print/Stop Test ................................................................................................................ 42 4 Information menu ............................................................................................................443 Configure device menu/printing menu ............................................................................443 Configure device menu/resets menu ..............................................................................443 Configure device menu/print quality menu .....................................................................443 Test pages .............................................................................................................................445 Engine test page .............................................................................................................445 Formatter test page ........................................................................................................445 Engine resets ........................................................................................................................446 Cold reset .......................................................................................................................446 NVRAM initialization .......................................................................................................446 Calibration bypass ..........................................................................................................447 Calibrate Now .................................................................................................................447 Service menu ........................................................................................................................448 Accessing the Service menu ..........................................................................................448 Diagrams ............................................................................................................................... 50 4 Main parts ....................................................................................................................... 51 4 Switches .........................................................................................................................452 Sensors ...........................................................................................................................453 Solenoids and clutches ...................................................................................................454 Motors and fans .............................................................................................................. 55 4 PCBs ...............................................................................................................................456 Connector locations ........................................................................................................ 58 4 500-sheet paper feeder connectors ...............................................................................462 General circuit diagram ..................................................................................................463
8 Parts and diagrams
Chapter contents ................................................................................................................... 65 4 Introduction ............................................................................................................................466 Ordering parts .......................................................................................................................467 Supplies and accessories ............................................................................................... 67 4 Replacement parts configuration ....................................................................................473 Illustrations and parts lists .....................................................................................................478 Alphabetical parts list.............................................................................................................538 Numerical parts list.................................................................................................................551
Index
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List of tables
Table 1-1. Table 1-2. Table 1-3. Table 1-4. Table 1-5. Table 1-6. Table 1-7. Table 1-8. Table 1-9. Table 1-10. Table 1-11. Table 1-12. Table 1-13. Table 2-1. Table 3-1. Table 3-2. Table 3-3. Table 3-4. Table 4-1. Table 4-2. Table 4-3. Table 5-1. Table 5-2. Table 5-3. Table 5-4. Table 5-5. Table 5-6. Table 6-1. Table 6-2. Table 6-3. Table 7-1. Table 7-2. Table 7-3. Table 7-4. Table 7-5. Table 7-6. Table 7-7. Table 7-8. Table 7-9. Table 7-10. Table 7-11. Table 7-12. Table 7-13. Table 7-14. Table 7-15.
Features ............................................................................................................6 Electrical specifications ...................................................................................12 Power consumption for 110 and 220-volt (average in watts)1 ........................12 Environmental specifications ..........................................................................13 Supply storage requirements ..........................................................................13 Physical dimensions ........................................................................................15 Acoustic emissions ..........................................................................................15 Tray 1 paper sizes1 .........................................................................................16 Tray 2 paper sizes1 .........................................................................................17 Tray 3 paper sizes1 .........................................................................................17 Automatic two-sided printer (available on some models of the HP Color LaserJet 3700 series printer)1 .........................................................17 Model names and numbers ............................................................................22 Weight equivalence table ................................................................................29 Related documentation and software .............................................................45 Printer drivers for the HP Color LaserJet 3500/3550 series printer ................71 Printer drivers for the HP Color LaserJet 3700 series printer .........................72 Other software applications ............................................................................75 Printer security levels ......................................................................................76 Cleaning the printer .........................................................................................92 Approximate replacement intervals .................................................................94 Approximate replacement intervals .................................................................95 Basic operation sequence .............................................................................115 Motor Functions ............................................................................................122 Function of solenoids ....................................................................................123 Function of clutches ......................................................................................123 Print media and feed speeds ........................................................................187 Conditions of available duplex feed ..............................................................195 Common fasteners ........................................................................................205 Approximate replacement intervals for print cartridges ................................207 Approximate replacement intervals for supply items ....................................207 Pre-troubleshooting checklist ........................................................................307 Alphabetical printer messages ......................................................................313 Numerical printer messages .........................................................................328 Error messages and associated jam locations .............................................358 Causes for multiple pages feeding ................................................................360 Causes for jams in the Tray 1 pick-up area ..................................................360 Causes for jams in the Tray 2 area ...............................................................361 Causes for jams in the fuser/face-down delivery area ..................................361 Transfer/feed area .........................................................................................362 Causes for wrinkled or folded paper (paper path entrance) .........................368 Causes for wrinkled or folded paper (paper path exit) ..................................368 Causes for skewed paper .............................................................................368 Causes for jams in the duplex area (HP 3700 (only) ....................................369 Fuser/face-down delivery area ......................................................................370 Common causes of paper jams ....................................................................378
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Table 7-16. Table 7-17. Table 7-18. Table 7-19. Table 7-20. Table 7-21. Table 7-22. Table 7-23. Table 7-24. Table 7-25. Table 7-26. Table 7-27. Table 7-28. Table 7-29. Table 7-30. Table 7-31. Table 7-32. Table 7-33. Table 7-34. Table 7-35. Table 7-36. Table 7-37. Table 7-38. Table 7-39. Table 7-40. Table 7-41. Table 7-42. Table 7-43. Table 7-44. Table 7-45. Table 7-46. Table 7-47. Table 7-48. Table 7-49. Table 7-50. Table 8-1. Table 8-2. Table 8-3. Table 8-4. Table 8-5. Table 8-6. Table 8-7. Table 8-8. Table 8-9. Table 8-10. Table 8-11. Table 8-12. Table 8-13. Table 8-14. Table 8-15. Table 8-16. Table 8-17. Table 8-18. Table 8-19. Table 8-20. Table 8-21.
Image defects ................................................................................................390 Causes for light images .................................................................................391 Causes for one color printing light ................................................................392 Causes for dark images ................................................................................392 Causes for one color printing dark ................................................................393 Causes for a completely blank image ...........................................................393 Causes for an all black or solid colored image .............................................393 Causes for vertical lines of white dots ..........................................................394 Causes for dirt on the back of the paper .......................................................394 Causes for dirt on the front of the paper .......................................................395 Causes for vertical lines ................................................................................395 Causes for white vertical lines ......................................................................395 Causes for horizontal line .............................................................................396 Causes for white horizonal lines ...................................................................396 Causes for a missing color ............................................................................397 Causes for blank spots ..................................................................................397 Causes for poor fusing ..................................................................................397 Causes for distortion or blurring ....................................................................398 Causes for smearing .....................................................................................398 Causes for smearing .....................................................................................399 Causes for a misplaced image ......................................................................399 Causes for reversed color .............................................................................400 Causes for reversed color .............................................................................400 Repetitive defect cause .................................................................................401 Communications check .................................................................................403 Information menu ..........................................................................................408 Paper handling menu ....................................................................................408 Printing menu ................................................................................................409 Print quality menu .........................................................................................412 System setup submenu .................................................................................415 I/O submenu ..................................................................................................418 Resets submenu ...........................................................................................419 Diagnostics menu ..........................................................................................419 Service menu ................................................................................................420 Paper path and manual sensor test control panel information .....................438 Supplies and accessories .............................................................................467 Common fasteners ........................................................................................472 PCB locations ................................................................................................481 Paper feeder PCB Assembly Location diagram ...........................................483 External covers and panels ...........................................................................485 Front door assembly .....................................................................................487 Internal components (1 of 4) .........................................................................489 Internal components (2 of 4) .........................................................................491 Internal components (3 of 4) .........................................................................495 Internal components (4 of 4) .........................................................................497 Center Frame Assembly ...............................................................................499 Main Right Side Plate Assembly / Motors .....................................................501 Main Left Side Plate Assembly .....................................................................505 Image drive assembly ...................................................................................511 Developing Disengaging Assembly ..............................................................513 Tray 2 (cassette) ...........................................................................................515 Pick-up/Feed assembly .................................................................................519 Tray 2 (cassette) pick-up assembly ..............................................................521 Face-down delivery assembly .......................................................................523 Transfer unit ..................................................................................................525 Right Swing Frame Assembly .......................................................................527
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Table 8-22. Table 8-23. Table 8-24. Table 8-25. Table 8-26. Table 8-27. Table 8-28.
Left swing frame assembly ...........................................................................529 Fuser assembly .............................................................................................531 500-Sheet paper feeder main body ..............................................................533 500-Sheet paper feeder paper pick-up drive assembly ................................535 500-Sheet paper feeder tray (Tray 3) ...........................................................537 Alphabetical parts list.............