HP Color Laserjet CP3505 Series Service Manual
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HP Color LaserJet 3000/3600/
3800/CP3505 Series Printer
Service Manual
HP Color LaserJet 3000/3600/3800/
CP3505 Series Printer
Service Manual
Copyright and license
© 2007 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.
Edition 1, 6/2007
Part number Q5982-91034
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
HP Color LaserJet CP3505 Series printer ............................................................................ 5
Features at a glance ..............................................................................................................................6
Walkaround ............................................................................................................................................ 8
Control-panel overview ........................................................................................................................ 10
Control-panel indicator lights .............................................................................................. 11
Display ................................................................................................................................ 11
Printer software .................................................................................................................................... 13
HP Color LaserJet 3000 Series printer, HP Color LaserJet 3800 Series printer, and
HP Color LaserJet CP3505 Series printer drivers .............................................................. 13
HP Color LaserJet 3600 Series printer drivers ................................................................... 14
Additional drivers ................................................................................................................ 15
Software for networks ......................................................................................................... 15
HP Web Jetadmin .............................................................................................. 15
UNIX ...................................................................................................................15
Linux ...................................................................................................................15
Utilities ................................................................................................................................. 16
HP Easy Printer Care Software ......................................................................... 16
Embedded Web server ...................................................................................... 16
Other components and utilities .......................................................................... 16
Print-media specifications .................................................................................................................... 17
Supported paper and print media sizes .............................................................................. 17
Media type and tray loading ................................................................................................ 18
2 Installation and configuration
What is in the box ................................................................................................................................ 22
Site requirements ................................................................................................................................ 23
Physical specifications ........................................................................................................ 23
Connecting to a network or a computer .............................................................................................. 24
Printer memory .................................................................................................................................... 26
Installing memory DIMMs ................................................................................................... 26
To install memory DIMMs .................................................................................. 26
Enabling memory ............................................................................................... 29
To enable memory for Windows ....................................................... 29
ENWW iii
Checking DIMM installation ............................................................................... 29
To check DIMM installation ............................................................... 29
3 Maintenance
Understanding approximate supplies-replacement intervals .............................................................. 32
Replacing supplies .............................................................................................................................. 33
Locating supplies ................................................................................................................ 33
Supply replacement guidelines ........................................................................................... 33
Managing the print cartridge ................................................................................................................ 34
HP print cartridges .............................................................................................................. 34
Non-HP print cartridges ...................................................................................................... 34
Print-cartridge authentication .............................................................................................. 34
Print-cartridge storage ........................................................................................................ 34
Print-cartridge life expectancy ............................................................................................ 34
Checking the supply level ................................................................................................... 35
Using the control panel ...................................................................................... 35
Using the embedded Web server ...................................................................... 35
Using HP Web Jetadmin .................................................................................... 35
Replacing print cartridges .................................................................................. 35
To replace the print cartridge ............................................................ 36
Cleaning the printer ............................................................................................................................. 38
Cleaning spilled toner ......................................................................................................... 38
Vacuum specifications ....................................................................................... 38
Calibrating the printer .......................................................................................................................... 39
Tools for troubleshooting ..................................................................................................................... 40
Using printer information pages .......................................................................................... 40
Configuring e-mail alerts ..................................................................................................... 41
Using the embedded Web server ....................................................................................... 41
To open the embedded Web server by using a network connection ................ 42
Embedded Web server sections ........................................................................ 43
Using the HP Easy Printer Care Software .......................................................................... 44
Supported operating systems ............................................................................ 44
To use the HP Easy Printer Care Software ....................................................... 45
HP Easy Printer Care Software sections ........................................................... 45
Using the HP Printer Utility for Macintosh .......................................................................... 46
To open the HP Printer Utility in Mac OS X V10.2 ............................................. 46
To open the HP Printer Utility in Mac OS X V10.3 ............................................. 46
HP Printer Utility features ................................................................................... 46
4 Theory of operation
Engine control system ......................................................................................................................... 50
Power-on sequence ............................................................................................................ 51
Motors, fans, and solenoids ................................................................................................ 52
Laser/scanner system ......................................................................................................................... 54
Pickup-and-feed-system ...................................................................................................................... 55
Sensors in the pickup-and-feed system trays (cassettes) .................................................. 56
Cassette pickup mechanism ............................................................................................... 57
Multipurpose-tray pickup mechanism ................................................................................. 58
Feed-speed control ............................................................................................................. 58
Sensor jam detection .......................................................................................................... 60
iv ENWW
Image-formation system ...................................................................................................................... 63
Image-formation process .................................................................................................... 64
Latent-image formation stage ............................................................................................. 65
Step 1: pre-exposure .......................................................................................... 65
Step 2: primary charging .................................................................................... 66
Step 3: laser-beam exposure ............................................................................. 66
Developing stage ................................................................................................................ 66
Step 4: developing ............................................................................................. 66
Transfer stage .....................................................................................................................66
Step 5: media feed ............................................................................................. 67
Step 6: image transfer ........................................................................................ 67
Step 7: separation from the drum ...................................................................... 67
Step 8: separation from the ETB ........................................................................ 68
Fusing stage ....................................................................................................................... 68
Step 9: fusing ..................................................................................................... 68
Cleaning stage .................................................................................................................... 68
Step 10: drum cleaning ...................................................................................... 69
Print cartridge ...................................................................................................................... 69
Print-cartridge activation ..................................................................................................... 70
5 Removal and replacement
Removal and replacement strategy ..................................................................................................... 72
Introduction ......................................................................................................................... 72
Required tools .....................................................................................................................73
Types of screws .................................................................................................................. 74
Service approach ................................................................................................................ 75
Before performing service ................................................................................................... 75
After performing service ...................................................................................................... 75
Print cartridges ....................................................................................................................76
External doors, covers, and panels ..................................................................................................... 77
Front cover ..........................................................................................................................77
Upper cover (fuser door) ..................................................................................................... 82
Rear lower cover ................................................................................................................. 85
Left cover ............................................................................................................................ 86
Right cover ..........................................................................................................................89
Rear upper cover ................................................................................................................ 93
Internal assemblies .............................................................................................................................. 94
Formatter cage .................................................................................................................... 94
Electrostatic transfer belt (ETB) .......................................................................................... 96
Fuser ...................................................................................................................................97
Duplex fan ...........................................................................................................................98
Print-cartridge drive motors .............................................................................................. 101
Duplex-reverse-drive assembly ........................................................................................ 102
Duplex-feed-drive assembly ............................................................................................. 105
Fuser drive assembly ........................................................................................................ 107
Developing separation-drive assembly ............................................................................. 110
Pickup-and-feed assembly ............................................................................................... 113
Pickup-drive assembly ...................................................................................................... 119
Laser/scanner assembly ................................................................................................... 128
Main fan ............................................................................................................................ 132
ENWW v
Printed circuit assemblies (PCAs) ..................................................................................................... 134
Low-voltage power-supply PCA ........................................................................................ 134
DC controller PCA ............................................................................................................. 138
High-voltage power supply ............................................................................................... 140
Memory-controller PCA .................................................................................................... 142
Driver PCA ........................................................................................................................ 144
Control panel ..................................................................................................................... 146
Pickup-and-feed driver PCA ............................................................................................. 148
Duplex-driver PCA ............................................................................................................ 150
Sensors .............................................................................................................................................. 152
Cassette media sensor (HP LaserJet 3600/3800/CP3505) ............................................. 152
Temperature sensor ......................................................................................................... 154
Paper and registration sensor covers ............................................................................... 155
Cartridge-sensor PCA ....................................................................................................... 156
500-sheet feeder ............................................................................................................................... 159
500-sheet feeder right cover ............................................................................................. 159
500-sheet feeder left cover ............................................................................................... 161
500-sheet feeder rear cover ............................................................................................. 164
500-sheet feeder driver PCA ............................................................................................ 166
Media sensor (500-sheet feeder) ..................................................................................... 168
6 Troubleshooting
Troubleshooting process ................................................................................................................... 172
Pre-troubleshooting checklist ............................................................................................ 172
Troubleshooting flowchart ................................................................................................. 174
Power-on checks .............................................................................................................. 175
Control-panel messages .................................................................................................................... 176
Jams .................................................................................................................................................. 200
Jam recovery .................................................................................................................... 200
Avoiding jams .................................................................................................................... 201
Clearing jams .................................................................................................................... 202
Image-formation troubleshooting ...................................................................................... 212
Print-quality problems associated with media .................................................. 212
Defects on overhead transparencies ................................................................................ 213
Print-quality problems that are related to the environment .............................................. 214
Print-quality problems that are related to jams ................................................................. 214
Print-quality problems from toner buildup ......................................................................... 214
Print-quality troubleshooting pages .................................................................................. 214
Image defects .................................................................................................................................... 215
Light image ....................................................................................................................... 216
Light color ......................................................................................................................... 216
Dark image ........................................................................................................................ 217
Dark color .......................................................................................................................... 218
Completely blank image ................................................................................................... 218
All black or solid color ....................................................................................................... 218
Dots in vertical lines .......................................................................................................... 218
Dirt on back of paper ........................................................................................................ 219
Dirt on front of paper ......................................................................................................... 219
Vertical lines ..................................................................................................................... 220
White vertical lines ............................................................................................................ 220
vi ENWW
Horizontal line ................................................................................................................... 220
White horizontal line ......................................................................................................... 221
Color missing .................................................................................................................... 221
Blank spots ....................................................................................................................... 222
Poor fusing ........................................................................................................................222
Image distortion ................................................................................................................ 222
Color misregistration ......................................................................................................... 223
Smearing ........................................................................................................................... 223
Misplaced image ............................................................................................................... 224
Reversed color .................................................................................................................. 224
Snail tracks ....................................................................................................................... 224
Repetitive-defects troubleshooting .................................................................................................... 225
Interface troubleshooting ................................................................................................................... 227
Communication checks ..................................................................................................... 227
EIO troubleshooting .......................................................................................................... 227
Service menu ..................................................................................................................................... 228
Using the Service menu .................................................................................................... 228
Clear event log .................................................................................................................. 228
Total page count ............................................................................................................... 228
Serial number .................................................................................................................... 228
Diagnostics menu .............................................................................................................................. 229
Diagnostics ........................................................................................................................................ 230
LED diagnostics ................................................................................................................ 230
Diagnostics mode ............................................................................................................. 230
Diagnostics that put the engine into the special diagnostics mode ................. 231
Diagnostic tests ................................................................................................................. 231
Individual diagnostic tests ................................................................................................. 232
Print the event log page ................................................................................... 232
View the event log on the control-panel display .............................................. 232
Print the print-quality (PQ) troubleshooting pages ........................................... 233
Disable cartridge check (special mode test) .................................................... 233
Paper-path sensor test ..................................................................................... 233
Paper-path test ................................................................................................. 233
Manual sensor test (special mode test) ........................................................... 234
Component test (special mode test) ................................................................ 235
Print/Stop test ................................................................................................... 237
Test pages .........................................................................................................................................238
Engine test page ............................................................................................................... 238
Formatter test .................................................................................................................... 238
Half-self test ...................................................................................................................... 238
Drum-rotation test ............................................................................................................. 239
Engine resets ..................................................................................................................................... 240
Engine resets .................................................................................................................... 240
Cold reset ......................................................................................................... 240
NVRAM initialization ......................................................................................... 240
Hard-disk initialization ...................................................................................... 241
Service ID .......................................................................................................................................... 242
Converting the Service ID to an actual date ..................................................................... 242
Restoring the Service ID ................................................................................................... 242
Troubleshooting diagrams ................................................................................................ 243
ENWW vii
Connector locations ......................................................................................... 243
Major assemblies ............................................................................................. 245
DC controller connectors ................................................................................. 250
Timing diagram ................................................................................................ 251
Circuit diagrams ............................................................................................... 253
7 Parts and diagrams
Ordering parts and supplies .............................................................................................................. 258
Parts .................................................................................................................................. 258
How to use the parts lists and diagrams ........................................................................... 258
Types of screws ................................................................................................................ 258
Related documentation and software ............................................................................... 259
Accessories and supplies ................................................................................................. 259
External panels and covers ............................................................................................................... 264
Internal components .......................................................................................................................... 272
Paper-pickup drive assembly ............................................................................................................ 282
Duplexing-feed drive assembly (duplex models) .............................................................................. 284
Duplexing reverse-drive assembly (duplex models) ......................................................................... 286
Developing separation-drive assembly ............................................................................................. 288
Fuser drive assembly ........................................................................................................................ 290
Cassette (tray 2) ................................................................................................................................ 292
Paper-pickup assembly (HP CLJ 3600/3800/CP3505) ..................................................................... 294
Paper-pickup assembly (HP CLJ 3000) ............................................................................................ 296
Electronic transfer belt (simplex models) .......................................................................................... 298
Electronic transfer belt (duplex models) ............................................................................................ 300
Multipurpose tray assembly (tray 1) .................................................................................................. 302
Duplex-paper feed assembly (duplex models) .................................................................................. 304
Fuser .................................................................................................................................................. 306
PCAs .................................................................................................................................................. 308
500-sheet feeder cassette (tray 3) .................................................................................................... 310
500-sheet feeder paper-pickup assembly ......................................................................................... 312
500-sheet feeder PCA ....................................................................................................................... 314
Alphabetical parts list ......................................................................................................................... 316
Numerical parts list ............................................................................................................................ 326
Appendix A Printer specifications
Electrical specifications ..................................................................................................................... 338
Power-consumption specifications .................................................................................................... 339
Acoustic specifications ...................................................................................................................... 340
Operating-environment specifications ............................................................................................... 341
Appendix B Product warranty statements
Hewlett-Packard Limited Warranty Statement .................................................................................. 344
Availability of support and service ..................................................................................................... 345
HP maintenance agreements ............................................................................................................ 345
Next-Day Onsite Service .................................................................................................. 345
Appendix C Regulatory statements
FCC regulations ................................................................................................................................. 348
viii ENWW
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