HP LaserJet 3500, LaserJet 3550, LaserJet 3700 Service Manual
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.
TrueType
TM
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
ENU
and S
TOP
Keycap. Two examples are M
.
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.
ENWW Conventions iii
iv ENWW
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 ........................................................................................................26
Transparencies .................................................................................................................2 6
Glossy paper .....................................................................................................................26
Colored paper ...................................................................................................................26
Envelopes .........................................................................................................................27
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
ENWW Conventions v
Canadian DOC regulations ...............................................................................................37
EMI statement (Korea) .....................................................................................................37
VCCI statement (Japan) ...................................................................................................37
Laser statement for Finland ..............................................................................................38
FCC Regulations .....................................................................................................................39
2 Service approach
Chapter contents .....................................................................................................................41
Search approach .....................................................................................................................42
Parts and supplies ...................................................................................................................43
Ordering parts ...................................................................................................................43
Ordering supplies ..............................................................................................................43
Exchange program ...........................................................................................................44
Supplies ............................................................................................................................44
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 .....................................................................................................................47
Checking the package contents ..............................................................................................48
Unpacking the printer ..............................................................................................................50
Installing the print cartridge .....................................................................................................55
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 .......................................................................................................................71
Printer drivers ...................................................................................................................71
Software for networks .......................................................................................................72
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
vi ENWW
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 .....................................................................................................................91
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 ...................................................................................................................113
Basic operation .....................................................................................................................114
Operation sequence .......................................................................................................114
Power-on sequences ......................................................................................................116
Engine control system ...........................................................................................................119
DC controller PCB ..........................................................................................................119
Low-voltage power supply circuit ...................................................................................126
Low-voltage power supply circuit ...................................................................................131
Laser/scanner system ...........................................................................................................139
Laser control ...................................................................................................................140
Scanner motor control ....................................................................................................144
Image formation system ........................................................................................................146
Print process ...................................................................................................................147
Developing section .........................................................................................................156
Cartridge cleaning control ...............................................................................................163
Transfer section ..............................................................................................................164
ITB cleaning control ........................................................................................................167
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 ...........................................................................................174
Image stabilization control ..............................................................................................177
Pickup/feed system ...............................................................................................................182
Pickup/feed unit ..............................................................................................................184
Fuser/delivery unit ..........................................................................................................189
Duplexing feed unit (HP 3700 printer only) ....................................................................192
Jam detection .................................................................................................................195
ENWW Conventions vii
Paper feeder ..........................................................................................................................197
Pickup/delivery sequence ...............................................................................................198
Paper jam detection ........................................................................................................199
6 Removal and replacement
Chapter contents ...................................................................................................................201
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 ...................................................................................................................................209
Front door removal .........................................................................................................209
Left cover removal ..........................................................................................................210
Left front cover removal ..................................................................................................211
Right cover removal ........................................................................................................213
Top cover removal ..........................................................................................................214
Upper rear door removal ................................................................................................214
Rear cover removal ........................................................................................................215
Lower rear door (rear output bin) removal .....................................................................215
Tray 1 (multipurpose) removal .......................................................................................216
Main Assemblies ...................................................................................................................217
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 ................................................................................................................................250
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
viii ENWW
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 ..................................................................................................279
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
ENWW Conventions ix
7 Troubleshooting
Chapter contents ...................................................................................................................303
Introduction ............................................................................................................................306
Troubleshooting process .......................................................................................................307
Pre-troubleshooting checklist .........................................................................................307
Troubleshooting flowchart ..............................................................................................308
Troubleshooting power-on ..............................................................................................310
Printer error troubleshooting .................................................................................................312
Status messages ............................................................................................................312
Warning messages .........................................................................................................312
Error messages ..............................................................................................................312
Critical error messages ...................................................................................................312
Alphabetical printer messages .......................................................................................312
Numerical printer messages ...........................................................................................327
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 ...................................................................................................356
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 ...............................................................................................................384
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 .....................................................................................................................388
Swatch book color matching (HP Color LaserJet 3700 series printer only) ...................388
Adjusting color balance ..................................................................................................389
x ENWW
Image defects ........................................................................................................................390
Light image ....................................................................................................................391
Light color .......................................................................................................................392
Dark image ...................................................................................................................392
Dark color .......................................................................................................................393
Completely blank image .................................................................................................393
All black or solid color ....................................................................................................393
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 .................................................................................................................396
White horizontal line .......................................................................................................396
Color missing ..................................................................................................................397
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 ........................................................................................401
Interface troubleshooting ......................................................................................................403
Communications checks .................................................................................................403
EIO troubleshooting ........................................................................................................403
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 ......................................................................................................................406
@PJL EOJ ......................................................................................................................406
@PJL ECHO ...................................................................................................................406
@PJL USTATUS JOB=ON/OFF ....................................................................................406
@PJL USTATUSOFF .....................................................................................................406
Control panel troubleshooting ...............................................................................................407
Printing a menu map ......................................................................................................407
Information menu ............................................................................................................407
Paper handling menu .....................................................................................................408
Configure device menu ...................................................................................................409
Print quality menu ...........................................................................................................411
System setup menu ........................................................................................................414
I/O menu .........................................................................................................................418
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 .....................................................................................................................424
Printer configuration page ..............................................................................................428
Supplies status page ......................................................................................................429
Usage page (HP 3700 only) ...........................................................................................430
ENWW Conventions xi
Event log .........................................................................................................................431
Diagnostics ............................................................................................................................433
Diagnostics flowchart ......................................................................................................433
Engine diagnostics .........................................................................................................434
Diagnostics from the Control Panel ......................................................................................436
Printer display menu .......................................................................................................436
Diagnostics test menu ....................................................................................................436
Paper Path Test ..............................................................................................................439
Component Test – special mode test .............................................................................439
Print/Stop Test ................................................................................................................442
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 ...............................................................................................................................450
Main parts .......................................................................................................................451
Switches .........................................................................................................................452
Sensors ...........................................................................................................................453
Solenoids and clutches ...................................................................................................454
Motors and fans ..............................................................................................................455
PCBs ...............................................................................................................................456
Connector locations ........................................................................................................458
500-sheet paper feeder connectors ...............................................................................462
General circuit diagram ..................................................................................................463
8 Parts and diagrams
Chapter contents ...................................................................................................................465
Introduction ............................................................................................................................466
Ordering parts .......................................................................................................................467
Supplies and accessories ...............................................................................................467
Replacement parts configuration ....................................................................................473
Illustrations and parts lists .....................................................................................................478
Alphabetical parts list.............................................................................................................538
Numerical parts list.................................................................................................................551
Index
xii ENWW
List of tables
Table 1-1. Features ............................................................................................................6
Table 1-2. Electrical specifications ...................................................................................12
Table 1-3.
Table 1-4. Environmental specifications ..........................................................................13
Table 1-5. Supply storage requirements ..........................................................................13
Table 1-6. Physical dimensions ........................................................................................15
Table 1-7. Acoustic emissions ..........................................................................................15
Table 1-8.
Table 1-9.
Table 1-10.
Table 1-11. Automatic two-sided printer (available on some models of the
Table 1-12. Model names and numbers ............................................................................22
Table 1-13. Weight equivalence table ................................................................................29
Table 2-1. Related documentation and software .............................................................45
Table 3-1. Printer drivers for the HP Color LaserJet 3500/3550 series printer ................71
Table 3-2. Printer drivers for the HP Color LaserJet 3700 series printer .........................72
Table 3-3. Other software applications ............................................................................75
Table 3-4. Printer security levels ......................................................................................76
Table 4-1. Cleaning the printer .........................................................................................92
Table 4-2. Approximate replacement intervals .................................................................94
Table 4-3. Approximate replacement intervals .................................................................95
Table 5-1. Basic operation sequence .............................................................................115
Table 5-2. Motor Functions ............................................................................................122
Table 5-3. Function of solenoids ....................................................................................123
Table 5-4. Function of clutches ......................................................................................123
Table 5-5. Print media and feed speeds ........................................................................187
Table 5-6. Conditions of available duplex feed ..............................................................195
Table 6-1. Common fasteners ........................................................................................205
Table 6-2. Approximate replacement intervals for print cartridges ................................207
Table 6-3. Approximate replacement intervals for supply items ....................................207
Table 7-1. Pre-troubleshooting checklist ........................................................................307
Table 7-2. Alphabetical printer messages ......................................................................313
Table 7-3. Numerical printer messages .........................................................................328
Table 7-4. Error messages and associated jam locations .............................................358
Table 7-5. Causes for multiple pages feeding ................................................................360
Table 7-6. Causes for jams in the Tray 1 pick-up area ..................................................360
Table 7-7. Causes for jams in the Tray 2 area ...............................................................361
Table 7-8. Causes for jams in the fuser/face-down delivery area ..................................361
Table 7-9. Transfer/feed area .........................................................................................362
Table 7-10. Causes for wrinkled or folded paper (paper path entrance) .........................368
Table 7-11. Causes for wrinkled or folded paper (paper path exit) ..................................368
Table 7-12. Causes for skewed paper .............................................................................368
Table 7-13. Causes for jams in the duplex area (HP 3700 (only) ....................................369
Table 7-14. Fuser/face-down delivery area ......................................................................370
Table 7-15. Common causes of paper jams ....................................................................378
Power consumption for 110 and 220-volt (average in watts)
1
Tray 1 paper sizes
Tray 2 paper sizes
Tray 3 paper sizes
HP Color LaserJet 3700 series printer)
.........................................................................................16
1
.........................................................................................17
1
.........................................................................................17
1
.........................................................17
1
........................12
ENWW Conventions xiii
Table 7-16. Image defects ................................................................................................390
Table 7-17. Causes for light images .................................................................................391
Table 7-18. Causes for one color printing light ................................................................392
Table 7-19. Causes for dark images ................................................................................392
Table 7-20. Causes for one color printing dark ................................................................393
Table 7-21. Causes for a completely blank image ...........................................................393
Table 7-22. Causes for an all black or solid colored image .............................................393
Table 7-23. Causes for vertical lines of white dots ..........................................................394
Table 7-24. Causes for dirt on the back of the paper .......................................................394
Table 7-25. Causes for dirt on the front of the paper .......................................................395
Table 7-26. Causes for vertical lines ................................................................................395
Table 7-27. Causes for white vertical lines ......................................................................395
Table 7-28. Causes for horizontal line .............................................................................396
Table 7-29. Causes for white horizonal lines ...................................................................396
Table 7-30. Causes for a missing color ............................................................................397
Table 7-31. Causes for blank spots ..................................................................................397
Table 7-32. Causes for poor fusing ..................................................................................397
Table 7-33. Causes for distortion or blurring ....................................................................398
Table 7-34. Causes for smearing .....................................................................................398
Table 7-35. Causes for smearing .....................................................................................399
Table 7-36. Causes for a misplaced image ......................................................................399
Table 7-37. Causes for reversed color .............................................................................400
Table 7-38. Causes for reversed color .............................................................................400
Table 7-39. Repetitive defect cause .................................................................................401
Table 7-40. Communications check .................................................................................403
Table 7-41. Information menu ..........................................................................................408
Table 7-42. Paper handling menu ....................................................................................408
Table 7-43. Printing menu ................................................................................................409
Table 7-44. Print quality menu .........................................................................................412
Table 7-45. System setup submenu .................................................................................415
Table 7-46. I/O submenu ..................................................................................................418
Table 7-47. Resets submenu ...........................................................................................419
Table 7-48. Diagnostics menu ..........................................................................................419
Table 7-49. Service menu ................................................................................................420
Table 7-50. Paper path and manual sensor test control panel information .....................438
Table 8-1. Supplies and accessories .............................................................................467
Table 8-2. Common fasteners ........................................................................................472
Table 8-3. PCB locations ................................................................................................481
Table 8-4. Paper feeder PCB Assembly Location diagram ...........................................483
Table 8-5. External covers and panels ...........................................................................485
Table 8-6. Front door assembly .....................................................................................487
Table 8-7. Internal components (1 of 4) .........................................................................489
Table 8-8. Internal components (2 of 4) .........................................................................491
Table 8-9. Internal components (3 of 4) .........................................................................495
Table 8-10. Internal components (4 of 4) .........................................................................497
Table 8-11. Center Frame Assembly ...............................................................................499
Table 8-12. Main Right Side Plate Assembly / Motors .....................................................501
Table 8-13. Main Left Side Plate Assembly .....................................................................505
Table 8-14. Image drive assembly ...................................................................................511
Table 8-15. Developing Disengaging Assembly ..............................................................513
Table 8-16. Tray 2 (cassette) ...........................................................................................515
Table 8-17. Pick-up/Feed assembly .................................................................................519
Table 8-18. Tray 2 (cassette) pick-up assembly ..............................................................521
Table 8-19. Face-down delivery assembly .......................................................................523
Table 8-20. Transfer unit ..................................................................................................525
Table 8-21. Right Swing Frame Assembly .......................................................................527
xiv ENWW
Table 8-22. Left swing frame assembly ...........................................................................529
Table 8-23. Fuser assembly .............................................................................................531
Table 8-24. 500-Sheet paper feeder main body ..............................................................533
Table 8-25. 500-Sheet paper feeder paper pick-up drive assembly ................................535
Table 8-26. 500-Sheet paper feeder tray (Tray 3) ...........................................................537
Table 8-27. Alphabetical parts list.....................................................................................538
Table 8-28. Numerical parts list.........................................................................................551
ENWW Conventions xv
xvi ENWW
List of figures
Figure 1-1. HP Color LaserJet 3500/3550 printer ...............................................................3
Figure 1-2. HP Color LaserJet 3500n/3550n printer ...........................................................3
Figure 1-3. HP Color LaserJet 3700 printer ........................................................................4
Figure 1-4. HP Color LaserJet 3700n printer ......................................................................4
Figure 1-5. HP Color LaserJet 3700dn printer ....................................................................5
Figure 1-6. HP Color LaserJet 3700dtn printer ...................................................................5
Figure 1-7. Front view, HP Color LaserJet 3500/3550 and 3700 series printers
(shown with additional 500-sheet paper feeder) ...............................................9
Figure 1-8. Rear view, HP Color LaserJet 3500/3550 and 3700 series printers
(shown with additional 500-sheet paper feeder) .............................................10
Figure 1-9. Space requirements for the HP Color LaserJet 3500/3550 series printer ......11
Figure 1-10. Space requirements for the HP Color LaserJet 3700 series printer
with optional Tray 3 .........................................................................................12
Figure 1-11. Serial number information ...............................................................................22
Figure 1-12. Sample label ....................................................................................................23
Figure 1-13. EMI statement for Korea .................................................................................37
Figure 1-14. VCCI statement for Japan ...............................................................................37
Figure 3-1. HP Color LaserJet 3500/3550 printer package contents ................................48
Figure 3-2. Additional contents shipped with the HP Color LaserJet 3500n/3550n
printer ..............................................................................................................48
Figure 3-3. HP Color LaserJet 3700, 3700n, or 3700dn printer package contents ..........49
Figure 3-4. HP Color LaserJet 3700dtn printer package contents ....................................49
Figure 3-5. USB connection ..............................................................................................66
Figure 3-6. Parallel port connection ...................................................................................67
Figure 4-1. Toner specks ...................................................................................................93
Figure 4-2. Toner smearing ...............................................................................................93
Figure 4-3. Supply item and part locations ........................................................................96
Figure 5-1. Basic system operation .................................................................................114
Figure 5-2. Power-on sequence ......................................................................................116
Figure 5-3. Timing diagram .............................................................................................118
Figure 5-4. Engine control system ...................................................................................119
Figure 5-5. DC controller circuit .......................................................................................120
Figure 5-6. Motor locations ..............................................................................................123
Figure 5-7. Solenoid and clutch locations .......................................................................124
Figure 5-8. Drum motor control circuit .............................................................................124
Figure 5-9. Developing motor control circuit ....................................................................125
Figure 5-10. Fan control circuit ..........................................................................................125
Figure 5-11. Low-voltage power supply circuit ..................................................................126
Figure 5-12. Ceramic heater fusing method ......................................................................127
Figure 5-13. Heater temperature control circuit .................................................................128
Figure 5-14. Low-voltage power supply circuit ..................................................................131
Figure 5-15. High-voltage power supply circuit .................................................................133
Figure 5-16. Video interface ..............................................................................................135
Figure 5-17. Video interface signals ..................................................................................136
Figure 5-18. Output timing of the VIDEO signal in response to the /TOP signal ..............137
Figure 5-19. Output timing of the VIDEO signal synchronized with the /BD signal ..........138
ENWW Conventions xvii
Figure 5-20. Laser/scanner unit .........................................................................................139
Figure 5-21. Laser control block diagram ..........................................................................141
Figure 5-22. Image mask control .......................................................................................143
Figure 5-23. Scanner motor control ...................................................................................144
Figure 5-24. Image formation system ................................................................................146
Figure 5-25. Image formation system (signal paths) .........................................................147
Figure 5-26. Print process diagram ...................................................................................149
Figure 5-27. Electrostatic latent image formation ..............................................................150
Figure 5-28. Primary charging ...........................................................................................150
Figure 5-29. Laser beam exposure ...................................................................................151
Figure 5-30. Image development .......................................................................................152
Figure 5-31. Potential difference between the developing cylinder and the exposed
area ...............................................................................................................152
Figure 5-32. Primary transfer .............................................................................................153
Figure 5-33. Secondary transfer ........................................................................................153
Figure 5-34. Separation .....................................................................................................154
Figure 5-35. Fusing ............................................................................................................155
Figure 5-36. ITB cleaning ..................................................................................................155
Figure 5-37. Drum cleaning ...............................................................................................156
Figure 5-38. Cartridge diagram .........................................................................................157
Figure 5-39. Developing engaging/disengaging unit .........................................................159
Figure 5-40. Memory tag control .......................................................................................160
Figure 5-41. Cartridge presence detection ........................................................................161
Figure 5-42. Toner level detection .....................................................................................162
Figure 5-43. Transfer section diagram ..............................................................................164
Figure 5-44. Transfer section ............................................................................................166
Figure 5-45. ITB cleaning control ......................................................................................167
Figure 5-46. Waste toner full detection .............................................................................168
Figure 5-47. Transfer unit detection ..................................................................................169
Figure 5-48. Transfer unit life detection control .................................................................169
Figure 5-49. ITB self-aligning mechanism .........................................................................171
Figure 5-50. Primary transfer roller engaging/disengaging control ...................................172
Figure 5-51. Secondary transfer roller engaging/disengaging control ..............................173
Figure 5-52. Secondary transfer roller engaging/disengaging detection ..........................174
Figure 5-53. Color misregistration control .........................................................................176
Figure 5-54. Color misregistration detection .....................................................................177
Figure 5-55. Image stabilization control ............................................................................178
Figure 5-56. Image density detection ................................................................................180
Figure 5-57. Pickup/feed system .......................................................................................183
Figure 5-58. Pickup/feed system blocks ............................................................................184
Figure 5-59. Pickup/delivery unit block ..............................................................................186
Figure 5-60. Skew control mechanism ..............................................................................188
Figure 5-61. Media detection .............................................................................................189
Figure 5-62. Fuser/delivery unit .........................................................................................191
Figure 5-63. Duplexing unit ...............................................................................................193
Figure 5-64. Reverse control .............................................................................................194
Figure 5-65. Paper feeder .................................................................................................197
Figure 5-66. Paper feeder PCB signal flow .......................................................................198
Figure 5-67. Pickup/delivery sequence .............................................................................199
Figure 6-1. Phillips and Posidrive screwdriver comparison .............................................205
Figure 6-2. Cover locations .............................................................................................209
Figure 6-3. Front door removal (1 of 2) ...........................................................................210
Figure 6-4. Front door removal (2 of 2) ...........................................................................210
Figure 6-5. Left cover removal .........................................................................................211
Figure 6-6. Left front cover removal (1 of 3) ....................................................................211
Figure 6-7. Left front cover removal (2 of 4) ....................................................................212
xviii ENWW
Figure 6-8. Left front cover removal (2 of 3) ....................................................................212
Figure 6-9. Left front cover removal (3 of 3) ....................................................................213
Figure 6-10. Right cover removal ......................................................................................213
Figure 6-11. Top cover removal ........................................................................................214
Figure 6-12. Upper rear door removal ...............................................................................214
Figure 6-13. Rear cover removal .......................................................................................215
Figure 6-14. Lower rear door removal ...............................................................................215
Figure 6-15. Tray 1 removal ..............................................................................................216
Figure 6-16. Main internal assemblies ...............................................................................217
Figure 6-17. Transfer unit removal ....................................................................................219
Figure 6-18. Transfer unit installation ................................................................................219
Figure 6-19. Print cartridge removal ..................................................................................220
Figure 6-20. Fuser removal ...............................................................................................221
Figure 6-21. Face-down delivery assembly removal .........................................................222
Figure 6-22. Laser/scanner assembly removal .................................................................223
Figure 6-23. Image drive assembly removal .....................................................................224
Figure 6-24. Developing engaging drive assembly removal .............................................225
Figure 6-25. Pick-up/feed assembly removal (1 of 13) .....................................................226
Figure 6-26. Pick-up/feed assembly removal (2 of 13) .....................................................226
Figure 6-27. Pick-up/feed assembly removal (3 of 13) .....................................................227
Figure 6-28. Right swing rod arm reassembly ...................................................................227
Figure 6-29. Pick-up/feed assembly removal (4 of 13) .....................................................228
Figure 6-30. Pick-up/feed engaging rack assembly replacement (1 of 2) .........................229
Figure 6-31. Pick-up/feed engaging rack assembly replacement (2 of 2) .........................229
Figure 6-32. Print cartridge engaging pins replacement ...................................................229
Figure 6-33. Pick-up/feed assembly removal (5 of 13) .....................................................230
Figure 6-34. Pick-up/feed assembly removal (6 of 13) .....................................................231
Figure 6-35. Gear plate gear locations replacement .........................................................231
Figure 6-36. Pick-up/feed assembly removal (7 of 13) .....................................................232
Figure 6-37. Pick-up/feed assembly removal (8 of 13) .....................................................232
Figure 6-38. Pick-up/feed assembly removal (9 of 13) .....................................................233
Figure 6-39. Pick-up/feed assembly removal (10 of 13) ...................................................233
Figure 6-40. Pick-up/feed assembly removal (11 of 13) ...................................................234
Figure 6-41. Pick-up/feed assembly removal (12 of 13) ...................................................234
Figure 6-42. Pick-up/feed assembly removal (13 of 13) ...................................................235
Figure 6-43. Main assemblies parts location .....................................................................236
Figure 6-44. Tray 1 pick-up roller removal ........................................................................237
Figure 6-45. Tray 1 separation pad removal .....................................................................237
Figure 6-46. Tray 2 pick-up roller removal ........................................................................238
Figure 6-47. Tray 2 separation pad removal .....................................................................238
Figure 6-48. Secondary transfer charging roller removal ..................................................239
Figure 6-49. Feed guide unit removal (1 of 2) ...................................................................240
Figure 6-50. Feed guide removal (2 of 2) ..........................................................................241
Figure 6-51. Feed guide/printer drive shaft connection .....................................................241
Figure 6-52. Feed guide unit tab locations ........................................................................241
Figure 6-53. Right swing guide removal (1 of 4) ...............................................................242
Figure 6-54. Right swing guide removal (2 of 4) ...............................................................242
Figure 6-55. Right swing guide removal (3 of 4) ...............................................................243
Figure 6-56. Right swing guide removal (4 of 4) ...............................................................243
Figure 6-57. Swing guide shaft removal ............................................................................244
Figure 6-58. Developing (drum) lock arm position for swing guide installation .................244
Figure 6-59. Left swing guide removal (1 of 6) ..................................................................245
Figure 6-60. Left swing guide removal (2 of 6) ..................................................................246
Figure 6-61. Left swing guide removal (3 of 6) ..................................................................246
Figure 6-62. Left swing guide removal (4 of 6) ..................................................................247
Figure 6-63. Left swing guide removal (5 of 6) ..................................................................247
ENWW Conventions xix
Figure 6-64. Left swing guide removal (6 of 6) ..................................................................248
Figure 6-65. Left swing guide replacement .......................................................................249
Figure 6-66. Switch locations ............................................................................................250
Figure 6-67. Door switch removal ......................................................................................250
Figure 6-68. Sensor locations ............................................................................................252
Figure 6-69. Tray 2 paper sensor removal (1 of 3) ............................................................253
Figure 6-70. Tray 2 paper sensor removal (2 of 3) ............................................................253
Figure 6-71. Tray paper sensor removal (3 of 3) ...............................................................254
Figure 6-72. Registration paper sensor removal (1 of 2) ..................................................254
Figure 6-73. Registration paper sensor removal (2 of 2) ..................................................255
Figure 6-74. Media sensor removal ...................................................................................255
Figure 6-75. Fuser front paper sensor (PS6) removal ......................................................256
Figure 6-76. Fuser delivery paper sensor removal (1 of 2) ...............................................256
Figure 6-77. Fuser delivery paper sensor removal (2 of 2) ...............................................257
Figure 6-78. Face-down (output bin) delivery paper sensor removal ...............................257
Figure 6-79. Reversed paper sensor removal (1 of 2) ......................................................258
Figure 6-80. Reversed paper sensor removal (2 of 2) ......................................................258
Figure 6-81. Duplex feed delivery paper sensor removal .................................................259
Figure 6-82. Rear output bin paper sensor removal .........................................................259
Figure 6-83. Color misregistration sensor removal ...........................................................260
Figure 6-84. Waste toner level sensor removal .................................................................261
Figure 6-85. Developing engaging sensor removal ..........................................................261
Figure 6-86. Environmental sensor removal .....................................................................262
Figure 6-87. Secondary transfer roller engaging sensor removal .....................................262
Figure 6-88. Solenoid and clutch locations .......................................................................263
Figure 6-89. Tray 1 pick-up solenoid removal ...................................................................264
Figure 6-90. Tray 2 pick-up solenoid removal (1 of 2) ......................................................264
Figure 6-91. Tray 2 pick-up solenoid removal (2 of 2) ......................................................265
Figure 6-92. Secondary transfer roller engaging solenoid removal (1 of 2) ......................265
Figure 6-93. Secondary transfer roller engaging solenoid removal (2 of 2) ......................266
Figure 6-94. Duplex feed solenoid removal .......................................................................266
Figure 6-95. Registration clutch removal (1 of 2) ..............................................................267
Figure 6-96. Registration clutch removal (2 of 2) ..............................................................267
Figure 6-97. Black development clutch removal (2 of 2) ...................................................268
Figure 6-98. Developing engaging drive clutch removal ...................................................268
Figure 6-99. Motor and fan locations .................................................................................269
Figure 6-100. Feed motor removal (1 of 3) .........................................................................270
Figure 6-101. Feed motor removal (2 of 3) .........................................................................270
Figure 6-102. Feed motor removal (3 of 3) .........................................................................271
Figure 6-103. Delivery motor removal .................................................................................271
Figure 6-104. Drum motor removal (1 of 3) .........................................................................272
Figure 6-105. Drum motor removal (2 of 3) .........................................................................272
Figure 6-106. Drum motor removal (3 of 3) .........................................................................273
Figure 6-107. Developing motor removal (1 of 3) ................................................................273
Figure 6-108. Developing motor removal (2 of 3) ................................................................274
Figure 6-109. Developing motor removal (3 of 3) ................................................................274
Figure 6-110. Primary transfer roller engaging motor removal (1 of 4) ...............................275
Figure 6-111. Primary transfer roller engaging motor removal (2 of 4) ...............................276
Figure 6-112. Transfer roller engaging motor removal (3 of 4) ...........................................276
Figure 6-113. Transfer roller engaging motor (4 of 4) .........................................................277
Figure 6-114. Fan removal ..................................................................................................277
Figure 6-115. Circuit board locations ...................................................................................278
Figure 6-116. DC controller PCB removal ...........................................................................279
Figure 6-117. Formatter PCB (HP 3500/3550) removal (1 of 2) .........................................280
Figure 6-118. Formatter PCB (HP 3500/3500) removal (2 of 2) .........................................280
Figure 6-119. Formatter PCB (HP 3700) removal (1 of 2) ..................................................281
xx ENWW
Figure 6-120. Formatter PCB (HP 3700) removal (2 of 2) ..................................................281
Figure 6-121. HP 3500/3550 and HP 3700 .........................................................................282
Figure 6-122. High-voltage power supply PCB removal (1 of 5) .........................................282
Figure 6-123. High-voltage power supply PCB removal (2 of 5) .........................................283
Figure 6-124. High-voltage power supply PCB removal (3 or 5) .........................................283
Figure 6-125. High-voltage power supply PCB removal (4 of 5) .........................................284
Figure 6-126. High-voltage power supply PCB removal (5 of 5) .........................................284
Figure 6-127. Low voltage power supply PCB removal (1 of 2) ..........................................285
Figure 6-128. Left front cover removal (2 of 4) ....................................................................285
Figure 6-129. Low voltage power supply PCB removal (2 of 2) ..........................................286
Figure 6-130. Memory controller PCB removal (1 of 2) ......................................................286
Figure 6-131. Memory controller PCB removal (2 of 2) ......................................................287
Figure 6-132. Control panel PCB removal ..........................................................................287
Figure 6-133. Developing contact assembly removal (1 of 3) .............................................289
Figure 6-134. Developing contact assembly removal (2 of 3) .............................................289
Figure 6-135. Developing contact assembly removal (3 of 3) .............................................290
Figure 6-136. Right Tray 2 guide removal (1 of 6) ..............................................................291
Figure 6-137. Right Tray 2 guide removal (2 of 6) ..............................................................292
Figure 6-138. Right Tray 2 guide removal (3 of 6) ..............................................................292
Figure 6-139. Right Tray 2 guide removal (4 of 6) ..............................................................293
Figure 6-140. Right Tray 2 guide removal (5 of 6) ..............................................................293
Figure 6-141. Right tray guide removal (6 of 6) ...................................................................294
Figure 6-142. Right Tray 2 guide removal (1 of 3) ..............................................................294
Figure 6-143. Right Tray 2 guide removal (2 of 3) ..............................................................295
Figure 6-144. Right Tray 2 guide removal (3 of 3) ..............................................................295
Figure 6-145. 500-Sheet feeder cover locations .................................................................296
Figure 6-146. 500-Sheet paper feeder front cover removal ................................................296
Figure 6-147. 500-sheet paper feeder right cover removal .................................................297
Figure 6-148. 500-sheet paper feeder left cover removal ...................................................297
Figure 6-149. 500-Sheet paper feeder pick-up roller removal ............................................298
Figure 6-150. 500-sheet paper feeder separation pad removal ..........................................299
Figure 6-151. 500-Sheet paper feeder pick-up drive unit removal ......................................299
Figure 6-152. 500-Sheet paper feeder sensor/solenoid/motor/PCB locations ...................300
Figure 6-153. 500-Sheet paper feeder PCB removal ..........................................................300
Figure 6-154. 500-Sheet paper feeder pick-up clutch removal ...........................................301
Figure 6-155. 500-Sheet paper feeder pick-up solenoid removal .......................................301
Figure 6-156. 500-Sheet paper feeder front frame removal (1 of 3) ...................................302
Figure 6-157. 500-Sheet feeder paper sensor removal (2 of 3) ..........................................302
Figure 6-158. 500-Sheet feeder paper sensor removal (3 of 3) ..........................................302
Figure 7-1. Jam area locations and sensor positions ......................................................357
Figure 7-2. Printer front door ...........................................................................................364
Figure 7-3. Left side of front door ....................................................................................367
Figure 7-4. Repetitive defects ruler .................................................................................402
Figure 7-5. Configuration page ........................................................................................404
Figure 7-6. Printer menu map (HP 3700 shown) .............................................................407
Figure 7-7. Printer configuration page .............................................................................428
Figure 7-8. EIO page .......................................................................................................429
Figure 7-9. Supplies status page .....................................................................................430
Figure 7-10. Usage page ...................................................................................................431
Figure 7-11. Event log .......................................................................................................432
Figure 7-12. Diagnostics flowchart ....................................................................................433
Figure 7-13. Formatter LED ...............................................................................................434
Figure 7-14. Location of sensors .......................................................................................437
Figure 7-15. Location of motors and fans ..........................................................................440
Figure 7-16. Location of solenoids and clutches ...............................................................441
Figure 7-17. Test page switch ...........................................................................................445
ENWW Conventions xxi
Figure 7-18. Location of main parts ...................................................................................451
Figure 7-19. Location of switches ......................................................................................452
Figure 7-20. Location of sensors .......................................................................................453
Figure 7-21. Location of solenoids and clutches ...............................................................454
Figure 7-22. Location of motors and fans ..........................................................................455
Figure 7-23. PCB locations ................................................................................................456
Figure 7-24. Location of DC controller PCB connectors (HP 3700) ..................................457
Figure 7-25. Location of DC controller PCB connectors (HP 3500/3550) .........................457
Figure 7-26. Connector locations for the HP Color LaserJet 3700 printer (1 of 2) ...........458
Figure 7-27. Connector locations for the HP Color LaserJet 3700 printer (2 of 2) ...........459
Figure 7-28. Connector locations for the HP Color LaserJet 3500/3550 printer (1 of 2) . .460
Figure 7-29. Connector locations for the HP Color LaserJet 3500/3550 printer (2 of 2) . .461
Figure 7-30. Connector locations for the 500-sheet paper feeder ....................................462
Figure 7-31. General circuit diagram (1 of 2) ....................................................................463
Figure 7-32. General circuit diagram (2 of 2) ....................................................................464
Figure 8-1. Main parts (1 of 3) .........................................................................................478
Figure 8-2. Main parts (2 of 3) .........................................................................................479
Figure 8-3. Main parts (3 of 3) 500-sheet paper feeder ..................................................480
Figure 8-4. PCB locations (1 of 2) ...................................................................................480
Figure 8-5. Paper Feeder PCB Assembly Location Diagram (2 of 2) R90 - 1 ................482
Figure 8-6. External covers and panels ...........................................................................484
Figure 8-7. Front door assembly .....................................................................................486
Figure 8-8. Internal components (1 of 4) .........................................................................488
Figure 8-9. Internal components (2 of 4) .........................................................................490
Figure 8-10. Internal components (3 of 4) .........................................................................494
Figure 8-11. Internal components (4 of 4) .........................................................................496
Figure 8-12. Center frame assembly .................................................................................498
Figure 8-13. Main Right Side Plate Assembly / Motors .....................................................500
Figure 8-14. Main Left Side Plate Assembly .....................................................................504
Figure 8-15. Lower Frame Assembly - HP 3700 and HP 3500/3550 (1 of 2) ...................506
Figure 8-16. Lower Frame Assembly - HP 3700 and HP 3500/3550 (2 of 2) ...................508
Figure 8-17. Image Drive Assembly ..................................................................................510
Figure 8-18. Developing Disengaging Assembly ..............................................................512
Figure 8-19. Tray 2 (cassette) ...........................................................................................514
Figure 8-20. Pick-up/Feed assembly (1 of 2) ....................................................................516
Figure 8-21. Pick-up/Feed assembly (2 of 2) ....................................................................518
Figure 8-22. Tray 2 (cassette) pick-up assembly ..............................................................520
Figure 8-23. Face-down delivery assembly .......................................................................522
Figure 8-24. Transfer Unit ..................................................................................................524
Figure 8-25. Right Swing Frame Assembly .......................................................................526
Figure 8-26. Left Swing Frame Assembly .........................................................................528
Figure 8-27. Fuser .............................................................................................................530
Figure 8-28. 500-Sheet paper feeder main body ..............................................................532
Figure 8-29. 500-Sheet paper feeder paper pick-up drive assembly ................................534
Figure 8-30. 500-Sheet paper feeder tray (Tray 3) ...........................................................536
xxii ENWW
Printer description
1
Chapter contents
This chapter contains the following sections.
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 ........................................................................................................26
Transparencies .................................................................................................................2 6
Glossy paper .....................................................................................................................26
Colored paper ...................................................................................................................26
Envelopes .........................................................................................................................27
Labels ...............................................................................................................................27
Heavy paper .....................................................................................................................28
HP LaserJet Tough paper ................................................................................................28
Preprinted forms and letterhead .......................................................................................28
Recycled paper .................................................................................................................29
ENWW Chapter contents 1
Media weight .....................................................................................................................29
Environmental product stewardship program .........................................................................31
Protecting the environment ...............................................................................................31
Declaration of Conformities .....................................................................................................34
Safety statements ...................................................................................................................37
Laser safety statement .....................................................................................................37
Canadian DOC regulations ...............................................................................................37
EMI statement (Korea) .....................................................................................................37
VCCI statement (Japan) ...................................................................................................37
Laser statement for Finland ..............................................................................................38
FCC Regulations .....................................................................................................................39
2 Chapter 1 Printer description ENWW
Printer configurations
HP Color LaserJet 3500/3550 printer
Figure 1-1.
HP Color LaserJet 3500/3550 printer
The HP Color LaserJet 3500 printer is a four-color laser printer that prints 12 pages per
minute (ppm) in both monochrome (black and white) and color. The HP Color LaserJet 3550
printer prints 16 pages per minute (ppm) in both monochrome (black and white) and color.
Trays. The printer comes with a multipurpose tray (Tray 1) that holds up to 100 sheets of
various paper types and sizes or 10 envelopes, and a 250-sheet paper feeder (Tray 2) that
supports various paper sizes. It supports an optional 500-sheet paper feeder (Tray 3). See
Print media specifications for more information.
Connectivity. The printer provides a high-speed Universal Serial Port (USB) 2.0 port for
connectivity.
Memory. The printer contains 64 megabytes (MB) of synchronous dynamic random access
memory (SDRAM).
HP Color LaserJet 3500n/3550n printer
Figure 1-2.
ENWW Printer configurations 3
HP Color LaserJet 3500n/3550n printer
The HP Color LaserJet 3500n/3550n printer includes the features of the HP Color LaserJet
3500/3550 printer, plus an HP Jetdirect en3700 external print server for easy connectivity to
10/100base-T networks.
HP Color LaserJet 3700 printer
Figure 1-3.
HP Color LaserJet 3700 printer
The HP Color LaserJet 3700 printer is a four-color laser printer that prints 16 ppm in both
monochrome and color.
Trays. The printer comes with a multipurpose tray (Tray 1) that holds up to 100 sheets of
various paper types and sizes or 10 envelopes, and a 250-sheet paper feeder (Tray 2) that
supports various paper sizes. It supports an optional 500-sheet paper feeder (Tray 3). See
Print media specifications for more information.
Connectivity. The printer has a USB port and a standard bidirectional parallel port
(IEEE-1284 compliant) for connectivity.
Memory. The printer contains 64 MB of SDRAM. To allow for memory expansion, the printer
has three dual inline memory module (DIMM) slots that accept 64, 128, or 256 MB RAM
each. This printer can support up to 448 MB of memory.
HP Color LaserJet 3700n printer
Figure 1-4.
4 Chapter 1 Printer description ENWW
HP Color LaserJet 3700n printer
The HP Color LaserJet 3700n printer includes the features of the HP Color LaserJet 3700
printer, plus an HPJetdirect 615n print server for easy connectivity to 10/100 base-T networks.
HP Color LaserJet 3700dn printer
Figure 1-5.
Figure 1-6.
HP Color LaserJet 3700dn printer
The HP Color LaserJet 3700dn printer includes the features of the HP Color LaserJet 3700n
printer, automatic two-sided (duplex) printing, and a total of 128 MB of SDRAM.
HP Color LaserJet 3700dtn printer
HP Color LaserJet 3700dtn printer
The HP Color LaserJet 3700dtn printer includes the features of the HP Color LaserJet
3700dn printer, with an additional 500-sheet paper feeder (Tray 3).
ENWW Printer configurations 5
Printer features
Table 1-1. Features
Feature HP Color LaserJet 3500/3550
series printer
Performance ● 12 ppm (in both
monochrome and color). If
the performance of the
printer is less than this,
see the HP Color LaserJet
3550 and 3700 series
printer User Guide or
theHP Color LaserJet
3500 and 3700 series
printer User Guide for
factors affecting printer
performance.
● Prints on a variety of
media. For more
information see
media specifications.
Memory ● 64 MB of SDRAM. ● 64 MB of SDRAM.
User interface ● Graphic display on control
panel.
● Enhanced control panel
help.
● HP Toolbox (a web
application for status and
troubleshooting
information).
●
Windows
Macintosh print drivers.
Print
®
PC and Apple
HP Color LaserJet 3700
series printer
● 16 ppm (in both
monochrome and color). If
the performance of the
printer is less than this,
see the HP Color LaserJet
3550 and 3700 series
printer User Guide for
factors affecting printer
performance.
● Prints on a variety of
media. For more
information see
media specifications.
● MIPS RISC 350 MHz
processor.
● Can be expanded to 448
MB.
● Graphic display on control
panel.
● Enhanced control panel
help.
● HP Toolbox (a Web
application for status and
troubleshooting
information).
● Windows PC and Apple
Macintosh print drivers.
● Embedded Web server to
access support and order
supplies (administrator tool
for network-connected
printers).
Print
Supported printer personalities ● HP JetReady 4.1 for the
HP Color LaserJet
3500/3550 series printer.
Storage features ● Not applicable. ● Fonts and forms.
Environmental features ● PowerSave setting.
● High content of recyclable
components and materials.
● HP PCL 6.
● PostScript 3 emulation.
● Automatic language
switching.
● PowerSave setting.
● High content of recyclable
components and materials.
6 Chapter 1 Printer description ENWW
Loading...