HP Color LaserJet 3000, 3600, 3800 Service Manual

4.6 (25)

HP Color LaserJet 3000/3600/3800 Series printers

Service Manual

HP Color LaserJet 3000/3600/3800 Series printers

Service Manual

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.

Edition 1, 11/2005

Part number Q5982-90932

Trademark credits

Microsoft® and Windows® are U.S. registered trademarks of Microsoft Corporation.

Linux is a U.S. registered trademark of Linus Torvalds.

PostScript® is a trademarks of Adobe Systems Incorporated.

UNIX® is a registered trademark of The Open Group.

Energy Star® and the Energy Star® logo are U.S. registered marks of the United States Environmental Protection Agency.

Table of contents

1 Product information
Quick access to printer information........................................................................................................	2
Printers at a glance................................................................................................................................	3
HP Color LaserJet 3000 Series printer..................................................................................	3
HP Color LaserJet 3600 Series printer..................................................................................	4
HP Color LaserJet 3800 Series printer..................................................................................	4
Features at a glance...............................................................................................................................	5
Walkaround............................................................................................................................................	7
Control-panel overview...........................................................................................................................	9
Control-panel indicator lights...............................................................................................	10
Display.................................................................................................................................	10
Printer software....................................................................................................................................	12
HP Color LaserJet 3000 Series printer and HP Color LaserJet 3800 Series printer
drivers..................................................................................................................................	12
HP Color LaserJet 3600 Series printer drivers....................................................................	12
Additional drivers.................................................................................................................	13
Software for networks..........................................................................................................	13
HP Web Jetadmin...............................................................................................	13
UNIX....................................................................................................................	13
Linux....................................................................................................................	14
Utilities.................................................................................................................................	14
HP Easy Printer Care Software...........................................................................	14
Embedded Web server.......................................................................................	14
Other components and utilities............................................................................	14
Print-media specifications....................................................................................................................	16
Supported media types........................................................................................................	16
Supported media sizes........................................................................................................	16
2 Installation and configuration
What is in the box.................................................................................................................................	20
Site requirements.................................................................................................................................	21
Physical specifications.........................................................................................................	21
Connecting to a network or a computer...............................................................................................	22
Printer memory.....................................................................................................................................	24
Installing memory DIMMs....................................................................................................	24
To install memory and font DIMMs.....................................................................	24
Enabling memory................................................................................................	27
To enable memory for Windows.........................................................	27
Checking DIMM installation.................................................................................	27

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To check DIMM installation................................................................	27
3 Maintenance
Understanding approximate supplies-replacement intervals................................................................	30
Replacing supplies...............................................................................................................................	31
Locating supplies.................................................................................................................	31
Supply replacement guidelines............................................................................................	31
Replacing the fuser..............................................................................................................	32
Managing the print cartridge.................................................................................................................	33
HP print cartridges...............................................................................................................	33
Non-HP print cartridges.......................................................................................................	33
Print-cartridge authentication...............................................................................................	33
Print-cartridge storage.........................................................................................................	33
Print-cartridge life expectancy.............................................................................................	33
Checking the supply level....................................................................................................	34
Using the control panel.......................................................................................	34
Using the embedded Web server........................................................................	34
Using HP Web Jetadmin.....................................................................................	34
Replacing print cartridges...................................................................................	34
To replace the print cartridge..............................................................	35
Cleaning the printer..............................................................................................................................	37
Cleaning spilled toner..........................................................................................................	37
Vacuum specifications........................................................................................	37
Calibrating the printer...........................................................................................................................	38
Tools for troubleshooting......................................................................................................................	39
Using printer information pages...........................................................................................	39
Configuring e-mail alerts......................................................................................................	40
Using the embedded Web server........................................................................................	40
To open the embedded Web server by using a network connection..................	41
Embedded Web server sections.........................................................................	41
Using the HP Easy Printer Care Software...........................................................................	43
Supported operating systems.............................................................................	43
To use the HP Easy Printer Care Software.........................................................	43
HP Easy Printer Care Software sections............................................................	44
Using the HP Printer Utility for Macintosh............................................................................	45
To open the HP Printer Utility in Mac OS X V10.2..............................................	45
To open the HP Printer Utility in Mac OS X V10.3..............................................	45
HP Printer Utility features....................................................................................	45
4 Theory of operation
Engine control system..........................................................................................................................	48
Power-on sequence.............................................................................................................	49
Motors, fans, and solenoids.................................................................................................	50
Laser/scanner system..........................................................................................................................	52
Pickup-and-feed-system.......................................................................................................................	53
Sensors in the pickup-and-feed system trays (cassettes)...................................................	54
Cassette pickup mechanism................................................................................................	55
Multipurpose-tray pickup mechanism..................................................................................	56
Feed-speed control..............................................................................................................	56
Sensor jam detection...........................................................................................................	58

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Image-formation system.......................................................................................................................	61
Image-formation process.....................................................................................................	62
Latent-image formation stage..............................................................................................	63
Step 1: pre-exposure...........................................................................................	63
Step 2: primary charging.....................................................................................	64
Step 3: laser-beam exposure..............................................................................	64
Developing stage.................................................................................................................	64
Step 4: developing..............................................................................................	64
Transfer stage......................................................................................................................	64
Step 5: media feed..............................................................................................	65
Step 6: image transfer.........................................................................................	65
Step 7: separation from the drum........................................................................	65
Step 8: separation from the ETB.........................................................................	66
Fusing stage........................................................................................................................	66
Step 9: fusing......................................................................................................	66
Cleaning stage.....................................................................................................................	66
Step 10: drum cleaning.......................................................................................	67
Print cartridge......................................................................................................................	67
Print-cartridge activation......................................................................................................	68
5 Removal and replacement
Removal and replacement strategy......................................................................................................	70
Introduction..........................................................................................................................	70
Required tools .....................................................................................................................	71
Types of screws...................................................................................................................	72
Service approach.................................................................................................................	73
Before performing service....................................................................................................	73
After performing service.......................................................................................................	73
Print cartridges.....................................................................................................................	74
External doors, covers, and panels......................................................................................................	75
Front cover...........................................................................................................................	75
Upper cover (fuser door)......................................................................................................	80
Rear lower cover..................................................................................................................	83
Left cover.............................................................................................................................	84
Right cover...........................................................................................................................	87
Rear upper cover.................................................................................................................	91
Internal assemblies..............................................................................................................................	92
Formatter cage....................................................................................................................	92
Electrostatic transfer belt (ETB)...........................................................................................	94
Fuser....................................................................................................................................	95
Duplex fan............................................................................................................................	96
Print-cartridge drive motors.................................................................................................	99
Duplex-reverse-drive assembly.........................................................................................	100
Duplex-feed-drive assembly..............................................................................................	103
Fuser drive assembly.........................................................................................................	105
Developing separation-drive assembly..............................................................................	108
Pickup-and-feed assembly................................................................................................	111
Pickup-drive assembly.......................................................................................................	116
Laser/scanner assembly....................................................................................................	125
Main fan.............................................................................................................................	129

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Printed circuit assemblies (PCAs)......................................................................................................	131
Low-voltage power-supply PCA.........................................................................................	131
DC controller PCA.............................................................................................................	135
High-voltage power supply................................................................................................	137
Memory-controller PCA.....................................................................................................	139
Driver PCA.........................................................................................................................	141
Control panel.....................................................................................................................	143
Pickup-and-feed driver PCA..............................................................................................	145
Duplex-driver PCA.............................................................................................................	147
Sensors..............................................................................................................................................	149
Cassette media sensor (HP LaserJet 3600/3800).............................................................	149
Temperature sensor..........................................................................................................	151
Paper and registration sensor covers................................................................................	152
Cartridge-sensor PCA........................................................................................................	153
500-sheet feeder................................................................................................................................	156
500-sheet feeder right cover..............................................................................................	156
500-sheet feeder left cover................................................................................................	158
500-sheet feeder rear cover..............................................................................................	161
500-sheet feeder driver PCA.............................................................................................	163
Media sensor (500-sheet feeder).......................................................................................	165
6 Troubleshooting
Troubleshooting process....................................................................................................................	170
Pre-troubleshooting checklist ............................................................................................	170
Troubleshooting flowchart..................................................................................................	172
Power-on checks...............................................................................................................	172
Control-panel messages....................................................................................................................	174
Jams...................................................................................................................................................	195
Jam recovery.....................................................................................................................	195
Avoiding jams....................................................................................................................	196
Clearing jams.....................................................................................................................	197
Image-formation troubleshooting.......................................................................................	207
Print-quality problems associated with media...................................................	207
Defects on overhead transparencies.................................................................................	208
Print-quality problems that are related to the environment................................................	208
Print-quality problems that are related to jams..................................................................	209
Print-quality problems from toner buildup..........................................................................	209
Print-quality troubleshooting pages...................................................................................	209
Image defects.....................................................................................................................................	210
Light image........................................................................................................................	211
Light color..........................................................................................................................	211
Dark image........................................................................................................................	212
Dark color..........................................................................................................................	212
Completely blank image....................................................................................................	213
All black or solid color........................................................................................................	213
Dots in vertical lines...........................................................................................................	213
Dirt on back of paper.........................................................................................................	213
Dirt on front of paper..........................................................................................................	214
Vertical lines .....................................................................................................................	214
White vertical lines.............................................................................................................	214

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Horizontal line....................................................................................................................	215
White horizontal line..........................................................................................................	215
Color missing ....................................................................................................................	216
Blank spots........................................................................................................................	216
Poor fusing.........................................................................................................................	216
Image distortion.................................................................................................................	217
Color misregistration..........................................................................................................	217
Smearing...........................................................................................................................	218
Misplaced image................................................................................................................	218
Reversed color...................................................................................................................	218
Snail tracks........................................................................................................................	218
Repetitive-defects troubleshooting.....................................................................................................	220
Interface troubleshooting....................................................................................................................	222
Communication checks......................................................................................................	222
EIO troubleshooting...........................................................................................................	222
Service menu.....................................................................................................................................	223
Using the Service menu.....................................................................................................	223
Clear event log...................................................................................................................	223
Total page count................................................................................................................	223
Serial number....................................................................................................................	223
Diagnostics menu...............................................................................................................................	224
Diagnostics.........................................................................................................................................	225
LED diagnostics.................................................................................................................	225
Diagnostics mode..............................................................................................................	225
Diagnostics that put the engine into the special diagnostics mode...................	226
Diagnostic tests.................................................................................................................	226
Individual diagnostic tests..................................................................................................	227
Print the event log page....................................................................................	227
View the event log on the control-panel display................................................	227
Print the print-quality (PQ) troubleshooting pages............................................	228
Disable cartridge check (special mode test).....................................................	228
Paper-path sensor test......................................................................................	228
Paper-path test..................................................................................................	228
Manual sensor test (special mode test)............................................................	229
Component test (special mode test).................................................................	230
Print/Stop test....................................................................................................	232
Test pages..........................................................................................................................................	233
Engine test page................................................................................................................	233
Formatter test....................................................................................................................	233
Half-self test.......................................................................................................................	233
Drum-rotation test..............................................................................................................	234
Engine resets.....................................................................................................................................	235
Engine resets.....................................................................................................................	235
Cold reset..........................................................................................................	235
NVRAM initialization..........................................................................................	235
Hard-disk initialization.......................................................................................	236
Service ID...........................................................................................................................................	237
Converting the Service ID to an actual date......................................................................	237

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Restoring the Service ID....................................................................................................	237
Troubleshooting diagrams.................................................................................................	238
Connector locations..........................................................................................	238
Major assemblies..............................................................................................	240
DC controller connectors...................................................................................	245
Timing diagram.................................................................................................	246
Circuit diagrams................................................................................................	248
7 Parts and diagrams
Ordering parts and supplies...............................................................................................................	252
Parts..................................................................................................................................	252
How to use the parts lists and diagrams............................................................................	252
Types of screws.................................................................................................................	252
Related documentation and software................................................................................	253
Accessories and supplies..................................................................................................	253
External panels and covers................................................................................................................	258
Internal components...........................................................................................................................	266
Paper-pickup drive assembly.............................................................................................................	276
Duplexing-feed drive assembly (duplex models)................................................................................	278
Duplexing reverse-drive assembly (duplex models)...........................................................................	280
Developing separation-drive assembly..............................................................................................	282
Fuser drive assembly.........................................................................................................................	284
Cassette (tray 2).................................................................................................................................	286
Paper-pickup assembly (HP CLJ 3600/3800)....................................................................................	288
Paper-pickup assembly (HP CLJ 3000).............................................................................................	290
Electronic transfer belt (simplex models)...........................................................................................	292
Electronic transfer belt (duplex models).............................................................................................	294
Multipurpose tray assembly (tray 1)...................................................................................................	296
Duplex-paper feed assembly (duplex models)...................................................................................	298
Fuser..................................................................................................................................................	300
PCAs .................................................................................................................................................	302
500-sheet feeder cassette (tray 3).....................................................................................................	304
500-sheet feeder paper-pickup assembly..........................................................................................	306
500-sheet feeder PCA........................................................................................................................	308
Alphabetical parts list.........................................................................................................................	310
Numerical parts list.............................................................................................................................	319
Appendix A Printer specifications
Electrical specifications......................................................................................................................	330
Power-consumption specifications.....................................................................................................	331
Acoustic specifications.......................................................................................................................	332
Operating-environment specifications................................................................................................	333
Appendix B Product warranty statements
Hewlett-Packard Limited Warranty Statement...................................................................................	336
Availability of support and service......................................................................................................	337
HP maintenance agreements.............................................................................................................	337
Next-Day Onsite Service...................................................................................................	337

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Appendix C Regulatory statements
FCC regulations.................................................................................................................................	340
Declaration of conformity (HP Color LaserJet 3000 Series printer)...................................................	341
Declaration of conformity (HP Color LaserJet 3600 Series and HP Color LaserJet 3800 Series
printer)................................................................................................................................................	342
Safety statements...............................................................................................................................	343
Laser safety.......................................................................................................................	343
Canadian DOC regulations................................................................................................	343
EMI statement (Korea).......................................................................................................	343
VCCI statement (Japan)....................................................................................................	343
Power cord statement (Japan)...........................................................................................	343
Laser statement for Finland...............................................................................................	344
Index...................................................................................................................................................................	345

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List of tables

Table 1-1	Printer guides..................................................................................................................................	2
Table 1-2	HP Color LaserJet 3000 Series printer configurations....................................................................	3
Table 1-3	HP Color LaserJet 3600 Series printer configurations....................................................................	4
Table 1-4	HP Color LaserJet 3800 Series printer configurations....................................................................	4
Table 1-5	Features..........................................................................................................................................	5
Table 1-6	Printer drivers for the HP Color LaserJet 3000 and 3800 Series printers.....................................	12
Table 1-7	Tray 1 (multipurpose tray) media types.........................................................................................	16
Table 1-8	Tray 2 and tray 3 media types.......................................................................................................	16
Table 1-9	Supported media sizes..................................................................................................................	16
Table 1-10	Automatic 2-sided printing ............................................................................................................	17
Table 2-1	Physical dimensions for the HP Color LaserJet 3000/3600/3800 Series printers.........................	21
Table 4-1	Sequence of operation..................................................................................................................	48
Table 6-1	Troubleshooting flowchart...........................................................................................................	172
Table 6-2	Common causes of jams.............................................................................................................	196
Table 6-3	Image defects..............................................................................................................................	210
Table 6-4	Causes for light images...............................................................................................................	211
Table 6-5	Causes for one color printing light...............................................................................................	211
Table 6-6	Causes for dark images..............................................................................................................	212
Table 6-7	Causes for one color printing darker than others........................................................................	212
Table 6-8	Causes for a completely blank image.........................................................................................	213
Table 6-9	Causes for an all black or solid colored image............................................................................	213
Table 6-10	Causes for vertical lines of white dots.........................................................................................	213
Table 6-11	Causes for dirt on the back of the paper.....................................................................................	214
Table 6-12	Causes for dirt on the front of the paper.....................................................................................	214
Table 6-13	Causes for vertical lines..............................................................................................................	214
Table 6-14	Causes for white vertical lines.....................................................................................................	215
Table 6-15	Causes for horizontal line............................................................................................................	215
Table 6-16	Causes for white horizontal lines................................................................................................	215
Table 6-17	Causes for a missing color..........................................................................................................	216
Table 6-18	Causes for blank spots................................................................................................................	216
Table 6-19	Causes for poor fusing................................................................................................................	216
Table 6-20	Causes for distortion or blurring..................................................................................................	217
Table 6-21	Causes for color misregistration..................................................................................................	217
Table 6-22	Causes for smearing...................................................................................................................	218
Table 6-23	Causes for a misplaced image....................................................................................................	218
Table 6-24	Causes for reversed color...........................................................................................................	218
Table 6-25	Causes for snail tracks................................................................................................................	218
Table 6-26	Causes of repetitive defects........................................................................................................	220
Table 6-27	Communication check.................................................................................................................	222
Table 6-28	Manual sensor test......................................................................................................................	230

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Table 7-1	Technical support Web sites.......................................................................................................	253
Table 7-2	Accessories and supplies............................................................................................................	253
Table 7-3	External panels and covers (1 of 2)............................................................................................	259
Table 7-4	External panels, and covers (2 of 2)...........................................................................................	261
Table 7-5	Front-cover assembly (simplex model).......................................................................................	263
Table 7-6	Front-cover assembly (duplex model).........................................................................................	265
Table 7-7	Internal components (1 of 5).......................................................................................................	267
Table 7-8	Internal components (2 of 5).......................................................................................................	269
Table 7-9	Internal components (3 of 5).......................................................................................................	271
Table 7-10	Internal components (4 of 5).......................................................................................................	273
Table 7-11	Internal components (5 of 5).......................................................................................................	275
Table 7-12	Paper-pickup drive assembly......................................................................................................	277
Table 7-13	Duplexing-feed drive assembly (duplex models)........................................................................	279
Table 7-14	Duplexing reverse-drive assembly (duplex models)...................................................................	281
Table 7-15	Developing separation-drive assembly.......................................................................................	283
Table 7-16	Fuser drive assembly..................................................................................................................	285
Table 7-17	Cassette (tray 2)..........................................................................................................................	287
Table 7-18	Paper-pickup assembly (HP CLJ 3600/3800).............................................................................	289
Table 7-19	Paper-pickup assembly (HP CLJ 3000)......................................................................................	291
Table 7-20	Electronic transfer belt (simplex models)....................................................................................	293
Table 7-21	Electronic transfer belt (duplex models)......................................................................................	295
Table 7-22	Multipurpose tray assembly (tray 1)............................................................................................	297
Table 7-23	Duplex-paper feed assembly (duplex models)............................................................................	299
Table 7-24	Fuser...........................................................................................................................................	301
Table 7-25	PCAs...........................................................................................................................................	303
Table 7-26	500-sheet feeder cassette (tray 3)..............................................................................................	305
Table 7-27	500-sheet feeder paper-pickup assembly...................................................................................	307
Table 7-28	500-sheet feeder PCA.................................................................................................................	309
Table 7-29	Alphabetical parts list..................................................................................................................	310
Table 7-30	Numerical parts list......................................................................................................................	319
Table A-1	Electrical specifications for the HP Color LaserJet 3000 Series printers....................................	330
Table A-2	Electrical specifications for the HP Color LaserJet 3600 Series printer......................................	330
Table A-3	Electrical specifications for the HP Color LaserJet 3800 Series printer......................................	330
Table A-4	Power consumption (average, in watts)......................................................................................	331
Table A-5	Acoustic emissions for the HP Color LaserJet 3000 Series printers...........................................	332
Table A-6	Acoustic emissions for the HP Color LaserJet 3600 Series printer.............................................	332
Table A-7	Acoustic emissions for theHP Color LaserJet 3800 Series printers............................................	332
Table A-8	Operating environment specifications.........................................................................................	333

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List of figures

Figure 1-1	Front view (shown with optional 500-sheet paper feeder)..............................................................	7
Figure 1-2	Back and side view.........................................................................................................................	8
Figure 1-3	Control panel buttons and lights......................................................................................................	9
Figure 1-4	Printer display...............................................................................................................................	10
Figure 2-1	What is in the shipping box...........................................................................................................	20
Figure 3-1	Supply-item locations....................................................................................................................	31
Figure 4-1	Engine control system components..............................................................................................	48
Figure 4-2	Power-on sequence......................................................................................................................	49
Figure 4-3	Motors, fans, and solenoids..........................................................................................................	50
Figure 4-4	Laser/scanner system...................................................................................................................	52
Figure 4-5	Pickup-and-feed system................................................................................................................	53
Figure 4-6	Pickup-and-feed system sensors..................................................................................................	54
Figure 4-7	Cassette pickup mechanism.........................................................................................................	55
Figure 4-8	Multipurpose-tray pickup mechanism............................................................................................	56
Figure 4-9	Image formation system................................................................................................................	61
Figure 4-10	Image-formation steps..................................................................................................................	63
Figure 4-11	Pre-exposure.................................................................................................................................	64
Figure 4-12	Laser-beam exposure...................................................................................................................	64
Figure 4-13	Media feed....................................................................................................................................	65
Figure 4-14	Image transfer...............................................................................................................................	65
Figure 4-15	Separation from the drum.............................................................................................................	66
Figure 4-16	Fusing...........................................................................................................................................	66
Figure 4-17	Print cartridge................................................................................................................................	67
Figure 4-18	Print-cartridge activation...............................................................................................................	68
Figure 5-1	Phillips and pozidrive screwdriver comparison.............................................................................	71
Figure 5-2	Remove the print cartridges (1 of 2)..............................................................................................	74
Figure 5-3	Remove the print cartridges (2 of 2)..............................................................................................	74
Figure 5-4	Remove the front cover (1 of 7)....................................................................................................	75
Figure 5-5	Remove the front cover (2 of 7)....................................................................................................	76
Figure 5-6	Remove the front cover (3 of 7)....................................................................................................	76
Figure 5-7	Remove the front cover (4 of 7)....................................................................................................	77
Figure 5-8	Remove the front cover (5 of 7)....................................................................................................	77
Figure 5-9	Remove the front cover (6 of 7)....................................................................................................	78
Figure 5-10	Remove the front cover (7 of 7)....................................................................................................	79
Figure 5-11	Remove the upper cover (1 of 5)..................................................................................................	80
Figure 5-12	Remove the upper cover (2 of 5)..................................................................................................	80
Figure 5-13	Remove the upper cover (3 of 5)..................................................................................................	81
Figure 5-14	Remove the upper cover (4 of 5)..................................................................................................	81
Figure 5-15	Remove the upper cover (5 of 5)..................................................................................................	82
Figure 5-16 Remove the rear lower cover (1 of 2)............................................................................................		83

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Figure 5-17 Remove the rear lower cover (2 of 2)............................................................................................	83
Figure 5-18 Remove the left cover (1 of 5).......................................................................................................	84
Figure 5-19 Remove the left cover (2 of 5).......................................................................................................	84
Figure 5-20 Remove the left cover (3 of 5).......................................................................................................	85
Figure 5-21 Remove the left cover (4 of 5).......................................................................................................	85
Figure 5-22 Remove the left cover (5 of 5).......................................................................................................	86
Figure 5-23 Remove the right cover (1 of 4).....................................................................................................	87
Figure 5-24 Remove the right cover (2 of 4).....................................................................................................	88
Figure 5-25 Remove the right cover (3 of 4).....................................................................................................	89
Figure 5-26 Remove the right cover (4 of 4).....................................................................................................	90
Figure 5-27 Remove the rear upper cover.......................................................................................................	91
Figure 5-28 Remove the formatter cage...........................................................................................................	93
Figure 5-29 Remove the front ETB...................................................................................................................	94
Figure 5-30 Remove the fuser..........................................................................................................................	95
Figure 5-31 Remove the duplex fan (1 of 3).....................................................................................................	96
Figure 5-32 Remove the duplex fan (2 of 3).....................................................................................................	97
Figure 5-33 Remove the duplex fan (3 of 3).....................................................................................................	98
Figure 5-34 Remove the print-cartridge motor.................................................................................................	99
Figure 5-35 Remove the duplex-reverse-drive assembly (1 of 5)..................................................................	100
Figure 5-36 Remove the duplex-reverse-drive assembly (2 of 5)..................................................................	101
Figure 5-37 Remove the duplex-reverse-drive assembly (3 of 5)..................................................................	101
Figure 5-38 Remove the duplex-reverse-drive assembly (4 of 5)..................................................................	102
Figure 5-39 Remove the duplex-reverse-drive assembly (5 of 5)..................................................................	102
Figure 5-40 Remove the duplex-feed-drive assembly (1 of 2).......................................................................	103
Figure 5-41 Remove the duplex-feed-drive assembly (2 of 2).......................................................................	104
Figure 5-42 Remove the fuser drive assembly (1 of 4) .................................................................................	105
Figure 5-43 Remove the fuser drive assembly (2 of 4) .................................................................................	106
Figure 5-44 Remove the fuser drive assembly (3 of 4)..................................................................................	106
Figure 5-45 Remove the fuser drive assembly (4 of 4)..................................................................................	107
Figure 5-46 Remove the developing separation-drive assembly (1 of 4).......................................................	108
Figure 5-47 Remove the developing separation-drive assembly (2 of 4).......................................................	109
Figure 5-48 Remove the developing separation-drive assembly (3 of 4).......................................................	109
Figure 5-49 Remove the developing separation-drive assembly (4 of 4).......................................................	110
Figure 5-50 Remove the pickup-and-feed assembly (1 of 8).........................................................................	111
Figure 5-51 Remove the pickup-and-feed assembly (2 of 8).........................................................................	112
Figure 5-52 Remove the pickup-and-feed assembly (3 of 8).........................................................................	112
Figure 5-53 Remove the pickup-and-feed assembly (4 of 8).........................................................................	113
Figure 5-54 Remove the pickup-and-feed assembly (5 of 8).........................................................................	113
Figure 5-55 Remove the pickup-and-feed assembly (6 of 8).........................................................................	114
Figure 5-56 Remove the pickup-and-feed assembly (7 of 8).........................................................................	114
Figure 5-57 Remove the pickup-and-feed assembly (8 of 8).........................................................................	115
Figure 5-58 Remove the pickup-drive assembly (1 of 13)..............................................................................	117
Figure 5-59 Remove the pickup-drive assembly (2 of 13)..............................................................................	118
Figure 5-60 Remove the pickup-drive assembly (3 of 13)..............................................................................	118
Figure 5-61 Remove the pickup-drive assembly (4 of 13)..............................................................................	119
Figure 5-62 Remove the pickup-drive assembly (5 of 13)..............................................................................	119
Figure 5-63 Remove the pickup-drive assembly (6 of 13)..............................................................................	120
Figure 5-64 Remove the pickup-drive assembly (7 of 13)..............................................................................	121
Figure 5-65 Remove the pickup-drive assembly (8 of 13)..............................................................................	121
Figure 5-66 Remove the pickup-drive assembly (9 of 13)..............................................................................	122

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Figure 5-67	Remove the pickup-drive assembly (10 of 13)............................................................................	122
Figure 5-68	Remove the pickup-drive assembly (11 of 13)............................................................................	123
Figure 5-69	Remove the pickup-drive assembly (12 of 13)............................................................................	123
Figure 5-70	Remove the pickup-drive assembly (13 of 13)............................................................................	124
Figure 5-71	Remove the laser/scanner assembly (1 of 6)..............................................................................	125
Figure 5-72	Remove the laser/scanner assembly (2 of 6)..............................................................................	126
Figure 5-73	Remove the laser/scanner assembly (3 of 6)..............................................................................	126
Figure 5-74	Remove the laser/scanner assembly (4 of 6)..............................................................................	127
Figure 5-75	Remove the laser/scanner assembly (5 of 6)..............................................................................	127
Figure 5-76	Remove the laser/scanner assembly (6 of 6)..............................................................................	128
Figure 5-77 Remove the main fan (1 of 2)......................................................................................................		129
Figure 5-78 Remove the main fan (2 of 2)......................................................................................................		130
Figure 5-79	Remove the low-voltage power-supply PCA (1 of 6)..................................................................	131
Figure 5-80	Remove the low-voltage power-supply PCA (2 of 6)..................................................................	132
Figure 5-81	Remove the low-voltage power-supply PCA (3 of 6)..................................................................	132
Figure 5-82	Remove the low-voltage power-supply PCA (4 of 6)..................................................................	133
Figure 5-83	Remove the low-voltage power-supply PCA (5 of 6)..................................................................	133
Figure 5-84	Remove the low-voltage power-supply PCA (6 of 6)..................................................................	134
Figure 5-85	Remove the DC controller PCA (1 of 3)......................................................................................	135
Figure 5-86	Remove the DC controller PCA (2 of 3)......................................................................................	136
Figure 5-87	Remove the DC controller PCA (3 of 3)......................................................................................	136
Figure 5-88	Remove the high-voltage power supply (1 of 3)..........................................................................	137
Figure 5-89	Remove the high-voltage power supply (2 of 3)..........................................................................	138
Figure 5-90	Remove the high-voltage power supply (3 of 3)..........................................................................	138
Figure 5-91	Remove the memory-controller PCA (1 of 2)..............................................................................	139
Figure 5-92	Remove the memory-controller PCA (2 of 2)..............................................................................	140
Figure 5-93	Remove the driver PCA (1 of 2)..................................................................................................	141
Figure 5-94	Remove the driver PCA (2 of 2)..................................................................................................	142
Figure 5-95	Remove the control panel (1 of 2)...............................................................................................	143
Figure 5-96	Remove the control panel (2 of 2)...............................................................................................	144
Figure 5-97	Remove the pickup-and-feed driver PCA (1 of 3).......................................................................	145
Figure 5-98	Remove the pickup-and-feed driver PCA (2 of 3).......................................................................	146
Figure 5-99	Remove the pickup-and-feed driver PCA (3 of 3).......................................................................	146
Figure 5-100	Remove the duplex-driver PCA (1 of 3)......................................................................................	147
Figure 5-101	Remove the duplex-driver PCA (2 of 3)......................................................................................	148
Figure 5-102	Remove the duplex-driver PCA (3 of 3)......................................................................................	148
Figure 5-103	Remove the cassette media sensor (1 of 2)...............................................................................	149
Figure 5-104	Remove the cassette media sensor (2 of 2)...............................................................................	150
Figure 5-105	Remove the temperature sensor.................................................................................................	151
Figure 5-106	Remove the paper and registration sensor covers.....................................................................	152
Figure 5-107	Remove the cartridge-sensor PCA (1 of 4).................................................................................	153
Figure 5-108	Remove the cartridge-sensor PCA (2 of 4).................................................................................	154
Figure 5-109	Remove the cartridge-sensor PCA (3 of 4).................................................................................	154
Figure 5-110	Remove the cartridge-sensor PCA (4 of 4).................................................................................	155
Figure 5-111	Remove the 500-sheet feeder right cover (1 of 3)......................................................................	156
Figure 5-112	Remove the 500-sheet feeder right cover (2 of 3)......................................................................	157
Figure 5-113	Remove the 500-sheet feeder right cover (3 of 3)......................................................................	157
Figure 5-114	Remove the 500-sheet feeder left cover (1 of 5).........................................................................	158
Figure 5-115	Remove the 500-sheet feeder left cover (2 of 5).........................................................................	159
Figure 5-116	Remove the 500-sheet feeder left cover (3 of 5).........................................................................	159

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Figure 5-117	Remove the 500-sheet feeder left cover (4 of 5).........................................................................	160
Figure 5-118	Remove the 500-sheet feeder left cover (5 of 5).........................................................................	160
Figure 5-119	Remove the 500-sheet feeder rear cover (1 of 3).......................................................................	161
Figure 5-120	Remove the 500-sheet feeder rear cover (2 of 3).......................................................................	162
Figure 5-121	Remove the 500-sheet feeder rear cover (3 of 3).......................................................................	162
Figure 5-122	Remove the 500-sheet-feeder driver PCA (1 of 2)......................................................................	163
Figure 5-123	Remove the 500-sheet-feeder driver PCA (2 of 2)......................................................................	164
Figure 5-124	Remove the media sensor (500-sheet feeder) (1 of 4)...............................................................	165
Figure 5-125	Remove the media sensor (500-sheet feeder) (2 of 4)...............................................................	166
Figure 5-126	Remove the media sensor (500-sheet feeder) (3 of 4)...............................................................	166
Figure 5-127	Remove the media sensor (500-sheet feeder) (4 of 4)...............................................................	167
Figure 6-1	Jam locations (printer shown without optional tray 3).................................................................	195
Figure 6-2	Repetitive defect ruler.................................................................................................................	221
Figure 6-3	Door switch and fuser interlock...................................................................................................	227
Figure 6-4	Engine test page.........................................................................................................................	233
Figure 6-5	Printer connector locations..........................................................................................................	238
Figure 6-6	500-sheet tray connector locations.............................................................................................	239
Figure 6-7	Major assemblies (1 of 5)............................................................................................................	240
Figure 6-8	Major assemblies (2 of 5)............................................................................................................	241
Figure 6-9	Major assemblies (3 of 5)............................................................................................................	242
Figure 6-10 Major assemblies (4 of 5)............................................................................................................		243
Figure 6-11 Major assemblies (5 of 5)............................................................................................................		244
Figure 6-12 DC controller connectors.............................................................................................................		245
Figure 6-13	Timing diagram (HP LaserJet 3000/3800)..................................................................................	246
Figure 6-14	Timing diagram (HP LaserJet 3600)...........................................................................................	247
Figure 6-15	General circuit diagram (1 of 2)...................................................................................................	249
Figure 6-16	General circuit diagram (2 of 2)...................................................................................................	250
Figure 7-1	External panels and covers (1 of 2)............................................................................................	258
Figure 7-2	External panels and covers (2 of 2)............................................................................................	260
Figure 7-3	Front-cover assembly (simplex model).......................................................................................	262
Figure 7-4	Front-cover assembly (duplex model).........................................................................................	264
Figure 7-5	Internal components (1 of 5).......................................................................................................	266
Figure 7-6	Internal components (2 of 5).......................................................................................................	268
Figure 7-7	Internal components (3 of 5).......................................................................................................	270
Figure 7-8	Internal components (4 of 5).......................................................................................................	272
Figure 7-9	Internal components (5 of 5).......................................................................................................	274
Figure 7-10	Paper-pickup drive assembly......................................................................................................	276
Figure 7-11	Duplexing-feed drive assembly (duplex models)........................................................................	278
Figure 7-12	Duplexing reverse-drive assembly (duplex models)...................................................................	280
Figure 7-13	Developing separation-drive assembly.......................................................................................	282
Figure 7-14 Fuser drive assembly..................................................................................................................		284
Figure 7-15	Cassette (tray 2)..........................................................................................................................	286
Figure 7-16	Paper-pickup assembly (HP CLJ 3600/3800).............................................................................	288
Figure 7-17	Paper-pickup assembly (HP CLJ 3000)......................................................................................	290
Figure 7-18	Electronic transfer belt (simplex models)....................................................................................	292
Figure 7-19	Electronic transfer belt (duplex models)......................................................................................	294
Figure 7-20	Multipurpose tray assembly (tray 1)............................................................................................	296
Figure 7-21 Duplex-paper feed assembly (duplex models)............................................................................		298
Figure 7-22	Fuser...........................................................................................................................................	300
Figure 7-23	PCAs...........................................................................................................................................	302

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Figure 7-24	500-sheet feeder cassette (tray 3)..............................................................................................	304
Figure 7-25	500-sheet feeder paper-pickup assembly...................................................................................	306
Figure 7-26	500-sheet feeder PCA.................................................................................................................	308

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1 Product information

●Quick access to printer information

●Printers at a glance

●Features at a glance

●Walkaround

●Control-panel overview

●Printer software

●Print-media specifications

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Quick access to printer information

Several references are available for use with this printer.

●HP Color LaserJet 3000 Series printer: www.hp.com/support/clj3000.

●HP Color LaserJet 3600 Series printer: www.hp.com/support/clj3600.

●HP Color LaserJet 3800 Series printer: www.hp.com/support/clj3800.

Table 1-1 Printer guides

Guide	Description

Getting started guide	Provides step-by-step instructions for installing and setting up the printer.

HP Jetdirect Embedded Print	Provides instructions to configure and troubleshoot the HP Jetdirect print server.
Server Administrators Guide

Accessory and consumable	Provide step-by-step instructions for installing the accessories and supplies. These guides
installation guides	are supplied with the optional printer accessories and supplies.

User guide	Provides detailed information for using and troubleshooting the printer. Available on the
	printer CD.

Online Help	Provides information about options that are available in the printer drivers. To view a Help
	file, open the online Help through the printer driver.

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Printers at a glance

The HP Color LaserJet 3000, 3600, and 3800 Series printers are available in the following configurations.

HP Color LaserJet 3000 Series printer

Table 1-2 HP Color LaserJet 3000 Series printer configurations

HP Color LaserJet 3000 printer

HP Color LaserJet 3000n printer

HP Color LaserJet 3000dn printer

HP Color LaserJet 3000dtn printer

●Prints up to 30 pages per minute (ppm) on letter-size media or

29 ppm on A4-size media in monochrome (black and white) and 15 ppm in color

●100-sheet multipurpose tray (tray 1) and 250-sheet input tray (tray 2)

●Hi-Speed universal serial bus (USB) 2.0 port and enhanced input/output (EIO) slot

●64 MB RAM

The features of the		The features of the		The features of the
HP Color LaserJet 3000		HP Color LaserJet 3000		HP Color LaserJet 3000
printer, plus:		printer, plus:		printer, plus:
●	64 MB RAM (128	●	192 MB RAM (256	●	192 MB RAM (256
	total)		total)		total)
●	HP Jetdirect full-	●	HP Jetdirect full-	●	HP Jetdirect full-
	featured embedded		featured embedded		featured embedded
	print server to		print server to		print server to
	connect to 10Base-T/		connect to 10Base-		connect to 10Base-T/
	100 Base-TX		T/100 Base-TX		100 Base-TX
	networks		networks		networks
		●	Automatic 2-sided	●	Automatic 2-sided
			(duplex) printing		(duplex) printing
				●	500-sheet input tray
					(tray 3)

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Printers at a glance

HP Color LaserJet 3000, 3600, 3800 Service Manual

HP Color LaserJet 3600 Series printer

Table 1-3 HP Color LaserJet 3600 Series printer configurations

HP Color LaserJet 3600 printer

HP Color LaserJet 3600n printer

HP Color LaserJet 3600dn printer

●17 ppm print speed

●100-sheet multipurpose tray (tray 1) and 250-sheet input tray (tray 2)

●Hi-Speed USB 2.0 port

●64 MB RAM

The features of the HP Color LaserJet 3600 printer, plus:

●HP Jetdirect value-featured embedded print server to connect to 10Base-T/100Base-TX networks

●64 MB RAM

The features of the HP Color LaserJet 3600 printer, plus:

●64 MB RAM (128 total)

●Automatic 2-sided (duplex) printing

●HP Jetdirect value-featured embedded print server to connect to 10Base-T/100Base-TX networks

HP Color LaserJet 3800 Series printer
Table 1-4 HP Color LaserJet 3800 Series printer configurations
HP Color LaserJet 3800 printer	HP Color LaserJet 3800n	HP Color LaserJet
	printer	3800dn printer

HP Color LaserJet 3800dtn printer

●	22 ppm (letter-size) or 21 ppm	The features of the	The features of the	The features of the
	(A4) print speed	HP Color LaserJet 3800	HP Color LaserJet 3800	HP Color LaserJet 3800
		printer, plus:	printer, plus:	printer, plus:

●100-sheet multipurpose tray

	(tray 1) and 250-sheet input tray	●	64 MB RAM (160	●	192 MB RAM (288	●	192 MB RAM (288
	(tray 2)		total)		total)		total)
●	Hi-Speed USB 2.0 port and EIO	●	HP Jetdirect full-	●	Automatic 2-sided	●	Automatic 2-sided
	slot		featured embedded		(duplex) printing		(duplex) printing
●	96 MB RAM		print server to	●	HP Jetdirect full-	●	HP Jetdirect full-
●	96 MB RAM		connect to 10Base-T/	●	HP Jetdirect full-	●	HP Jetdirect full-
			100Base-TX		featured embedded		featured embedded
			networks		print server to connect		print server to
					to 10Base-T/		connect to 10Base-T/
					100Base-TX		100Base-TX
					networks		networks
						●	500-sheet input tray
							(tray 3)

Chapter 1

Product information

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Features at a glance

Table 1-5 Features

Feature	HP Color LaserJet 3000 Series
	printer

HP Color LaserJet 3600 Series printer

HP Color LaserJet 3800 Series printer

Performance	●	533 MHz processor	●	360 MHz processor	●	533 MHz processor

User interface	●	Graphic display	●	Graphic display	●	Graphic display
	●	Control-panel help	●	Control-panel help	●	Control-panel help
	● HP Easy Printer Care Software (a		● HP Easy Printer Care Software		● HP Easy Printer Care Software
		Windows®- or Macintosh-based		(a Windowsor Macintosh-		(a Windowsor Macintosh-based
		status and troubleshooting tool)		based status and		status and troubleshooting tool)
	● Windows and Macintosh printer			troubleshooting tool)	● Windows and Macintosh printer
	● Windows and Macintosh printer		● Windows and Macintosh printer		● Windows and Macintosh printer
		drivers	● Windows and Macintosh printer			drivers
	● Embedded Web server to gain			drivers	● Embedded Web server to gain
	● Embedded Web server to gain		● Embedded Web server to		● Embedded Web server to gain
		access to support and to order	● Embedded Web server to			access to support and to order
		supplies (administrator tool for		configure network settings only		supplies (administrator tool for
		network-connected models only)		(administrator tool for network-		network-connected models only)
	●	HP formatter		connected models only)	●	HP formatter
	●	HP formatter	●	Host formatter	●	HP formatter
			●	Host formatter

Printer drivers	●	HP PCL 5c	HP JetReady 4.2		●	HP PCL 5c
	●	HP PCL 6			●	HP PCL 6
	●	PostScript® 3 emulation			●	PostScript 3 emulation
Storage features	●	Fonts, forms, and other macros	None		● Fonts, forms, and other macros
	●	Job retention			●	Job retention

Fonts	●	80 internal fonts available for both	None		● 80 internal fonts available for
		PCL and PostScript 3 emulation				both PCL and PostScript 3
	● 80 printer-matching screen fonts					emulation
	● 80 printer-matching screen fonts				● 80 printer-matching screen fonts
		in TrueType format available with			● 80 printer-matching screen fonts
		the software solution				in TrueType format available with
						the software solution

Accessories	●	Optional 500-sheet input tray	● Optional 500-sheet input tray		● Optional 500-sheet input tray
		(tray 3) (standard on the		(tray 3)		(tray 3) (standard on the
		HP Color LaserJet 3000dtn				HP Color LaserJet 3800dtn
		printer)				printer)
	● Dual inline memory modules				●	DIMMs
		(DIMMs)

Connectivity	●	Hi-Speed USB 2.0 cable interface	● Hi-Speed USB 2.0 cable		● Hi-Speed USB 2.0 cable
	● HP Jetdirect full-featured			interface		interface
	● HP Jetdirect full-featured
		embedded print server (standard	●	HP Jetdirect value-featured	●	HP Jetdirect full-featured
		on the HP Color LaserJet 3000n,		embedded print server (standard		embedded print server (standard
		3000dn, and 3000dtn printers)		on the HP Color LaserJet 3600n		on the HP Color LaserJet 3800n,
	● HP Web Jetadmin software			and 3600dn printers)		3800dn, and 3800dtn printers)
	● HP Web Jetadmin software
		(standard on the HP Color	● HP Web Jetadmin software		● HP Web Jetadmin software
				(standard on the HP Color		(standard on the HP Color
				LaserJet 3600n and 3600dn
				printers)

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Table 1-5 Features (continued)

Feature	HP Color LaserJet 3000 Series
	printer

HP Color LaserJet 3600 Series printer

HP Color LaserJet 3800 Series printer

		LaserJet 3000n, 3000dn, and	LaserJet 3800n, 3800dn, and
		3000dtn printers)	3800dtn printers)
	●	Enhanced input/output (EIO) slot	● Enhanced input/output (EIO) slot

Environmental	●	Sleep-mode setting
features	● High content of recyclable components and materials
	● High content of recyclable components and materials
	● ENERGY STAR® qualified
Supplies	●	Supplies status page contains information about toner level, page count, and estimated pages remaining
	● No-shake cartridge design
	● Printer checks for authentic HP print cartridges at cartridge installation
	● Internet-enabled supply-ordering capabilities (using HP Easy Printer Care Software)

Accessibility	●	The online user guide is compatible with text screen-readers.

● Print cartridges can be installed and removed by using one hand.

● All doors and covers can be opened by using one hand.

● Media can be loaded in tray 1 by using one hand.

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Walkaround

1 2

Figure 1-1

Front view (shown with optional 500-sheet paper feeder)

1 Output bin extender

2 Output bin

3 Top cover (This part is called the upper cover in this service manual.)

4 Printer control panel

5 Front door (This part is called the front cover in this service manual.)

6Tray 1 (holds 100 sheets of standard paper) (This part is called the multipurpose-tray assembly in this service manual.)

7 Tray 2 cassette (holds 250 sheets of standard paper)

8 Tray 3 cassette (optional; holds 500 sheets of standard paper)

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Walkaround

Figure 1-2 Back and side view

1	On/off switch

2	Power connection

3	EIO slot (available on the HP Color LaserJet 3000 and 3800 Series printers)

4	Hi-Speed USB 2.0 port

5Network port (available on the HP Color LaserJet 3000n, 3000dn, 3000dtn, 3600n, 3600dn, 3800n, 3800dn, and 3800dtn printers)

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Control-panel overview

The control panel provides controls for printer functions and shows messages about the printer, print jobs, and supplies status.

Figure 1-3	Control panel buttons and lights

Number	Button or light			Function

1	Stop button			Halts the current job, presents a choice to resume or cancel the
				current print job, clears media from the printer, and clears any
				continuable errors that are associated with the halted job. If the printer
				is not printing a job, pressing Stop pauses the printer.

2	Menu button			Opens and closes menus.

3	Ready light			Indicates that the printer is online or offline. See Control-panel
				indicator lights on page 10.

4	Data light			Indicates whether or not the printer is receiving data. See Control-
				panel indicator lights on page 10.

5	Attention light			Indicates that a critical error has occurred. See Control-panel
				indicator lights on page 10.

6	Back arrow (		) button	Navigates backward in nested menus.

7	Up arrow (		) button	Navigates menus and text, and increases the values of numerical
				items in the display.

8	Select (	) button		Makes selections, resumes printing after continuable errors, and
				overrides a non-HP print cartridge.

9	Down arrow (		) button	Navigates menus and text, and decreases the values of numerical
				items in the display.

10	Help (	) button		Provides detailed information about printer messages or menus.

11	Supplies gauge			Shows the print cartridge-consumption levels. See Display
				on page 10.

12	Display			Shows status information, menus, help information, and error
				messages. See Display on page 10.

The printer communicates through the display and the lights on the control panel. The display shows status information, menus, help information, and error messages. The Ready, Data, and Attention lights provide at-a-glance information about the printer state.

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You can perform most routine printing tasks from the computer through the printer driver or any software program. Use the control panel to access printer features that the printer driver or software program do not support. Any changes that you make from the computer override the printer control-panel settings. For information about using the printer driver, see Printer software on page 12.

Control-panel indicator lights

Indicator	On	Off	Flashing

Ready (green)

The printer is online (can accept and process data).

The printer is offline (paused), or is turned off.

The printer is attempting to stop printing and go offline. This usually results from a user's request to pause the current job.

Data (green)

The processed data is present in the printer, but more data is needed to complete the job, or the job is paused or waiting for errors to be cleared.

The printer is not processing or receiving data.

The printer is processing and receiving data.

Attention	A critical error has occurred.	No conditions exist that	An error has occurred. The
(amber)	The printer requires attention.	require attention.	printer requires attention.
(amber)

Display

The printer display gives you complete, timely information about the printer and print jobs. Graphics illustrate levels of supplies. Menus provide access to printer functions and detailed information.

The top-level screen on the display has two areas: message/prompt and supplies gauge.

Figure 1-4 Printer display

1Message/prompt area

2Supplies gauge

3Print cartridge colors from left to right: black, yellow, cyan, and magenta

The message and prompt areas of the display alert you to the state of the printer and tell you how to respond.

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