HP Color LaserJet CM1312 MFP Series
Service Manual
Copyright and License
© 2008 Copyright Hewlett-Packard
Development Company, L.P.
Reproduction, adaptation, or translation
without prior written permission is prohibited,
except as allowed under the copyright laws.
The information contained herein is subject
to change without notice.
The only warranties for HP products and
services are set forth in the express warranty
statements accompanying such products
and services. Nothing herein should be
construed as constituting an additional
warranty. HP shall not be liable for technical
or editorial errors or omissions contained
herein.
Part number: CC430-90964
Edition 1, 4/2008
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®
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Group.
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mark are registered U.S. marks.
Table of contents
1 Product basics
Quick access to product information .................................................................................................... 2
Product comparison ............................................................................................................................. 3
Product features ................................................................................................................................... 4
Product walkaround .............................................................................................................................. 5
Base model front view ......................................................................................................... 5
Base model back view ......................................................................................................... 6
Fax/memory-card model front view ..................................................................................... 6
Fax/memory-card model back view ..................................................................................... 7
Interface ports ...................................................................................................................... 7
Supported operating systems ............................................................................................................... 8
Supported operating systems for Windows ......................................................................... 8
Supported operating systems for Macintosh ....................................................................... 8
Supported product software ................................................................................................................. 9
Software included with the product ...................................................................................... 9
Software for Windows ......................................................................................... 9
HP Web Jetadmin ............................................................................... 9
Embedded Web server ....................................................................... 9
HP ToolboxFX .................................................................................. 10
Software for Macintosh ..................................................................................... 10
Embedded Web server ..................................................................... 10
Supported printer drivers ................................................................................................... 11
Supported printer drivers for Windows .............................................................. 11
HP Universal Print Driver (UPD) ....................................................................... 11
UPD installation modes .................................................................... 11
Supported printer drivers for Macintosh ............................................................ 11
Software for other operating systems ................................................................................ 12
System requirements ......................................................................................................................... 13
Connectivity ........................................................................................................................................ 14
Supported network protocols (network models only) ......................................................... 14
2 Control panel
Control-panel walkaround .................................................................................................................. 18
Base models control panel ................................................................................................ 18
ENWW iii
Fax/memory-card models control panel ............................................................................ 19
Control-panel menus .......................................................................................................................... 20
Use the control-panel menus ............................................................................................. 20
Control-panel Setup menu ................................................................................................. 20
Function-specific menus (fax/memory-card models only) ................................................. 29
3 Paper and print media
Supported paper and print media ....................................................................................................... 36
Supported paper types and tray capacity ........................................................................................... 37
Load paper and print media ............................................................................................................... 38
Load Tray 1 ........................................................................................................................ 38
Load originals for copying, scanning, or faxing .................................................................. 39
Configure tray ..................................................................................................................................... 41
4 Manage and maintain the product
Information pages ............................................................................................................................... 44
HP ToolboxFX .................................................................................................................................... 46
View the HP ToolboxFX ..................................................................................................... 46
Status ................................................................................................................................. 46
Event log ........................................................................................................... 47
Alerts .................................................................................................................................. 47
Set up status alerts ........................................................................................... 47
Set up e-mail alerts ........................................................................................... 47
Product information ............................................................................................................ 47
Fax ..................................................................................................................................... 48
Fax Receive ...................................................................................................... 48
Fax phone book ................................................................................................ 48
Fax send log ...................................................................................................... 50
Fax receive log .................................................................................................. 50
Junk Faxes ........................................................................................................ 50
Help ................................................................................................................................... 50
System Settings ................................................................................................................. 51
Device Information ............................................................................................ 51
Paper Handling ................................................................................................. 52
Print Quality ....................................................................................................... 52
Print Density ...................................................................................................... 52
Paper Types ...................................................................................................... 53
System setup .................................................................................................... 54
Service .............................................................................................................. 54
Device polling .................................................................................................... 54
Print Settings ..................................................................................................................... 54
Printing .............................................................................................................. 54
PCL5 ................................................................................................................. 55
iv ENWW
PostScript .......................................................................................................... 55
Network Settings ................................................................................................................ 55
Embedded Web server ....................................................................................................................... 56
Features ............................................................................................................................. 56
Use HP Web Jetadmin software ........................................................................................................ 57
Security features ................................................................................................................................ 57
Turn on password protection using the embedded Web server ........................................ 57
Turn on password protection from the control panel ......................................................... 57
Turn on private receive feature .......................................................................................... 58
Manage supplies ................................................................................................................................ 59
Check and order supplies .................................................................................................. 59
Check supplies status by using the control panel ............................................. 59
Check supplies status by using HP ToolboxFX ................................................ 59
Store supplies ................................................................................................... 60
HP policy on non-HP supplies ........................................................................... 60
HP fraud hotline ................................................................................................ 60
Recycle supplies ............................................................................................... 60
Replace supplies ............................................................................................................... 61
Print cartridge .................................................................................................... 61
Clean the product .............................................................................................................. 64
Clean the paper path ......................................................................................... 64
Clean the paper path from HP ToolboxFX ....................................... 65
Clean the paper path from the product control panel ....................... 65
Clean the automatic document feeder (ADF) pickup roller assembly ............... 66
Clean the lid backing ......................................................................................... 68
Clean the scanner glass .................................................................................... 69
Clean the exterior .............................................................................................. 70
Firmware updates .............................................................................................................. 70
Recover from a corrupted firmware download .................................................. 70
5 Theory of operation
Basic operation ................................................................................................................................... 74
Major product systems ....................................................................................................... 74
Product components .......................................................................................................... 75
Sequence of operation ....................................................................................................... 75
Engine control system ........................................................................................................................ 77
DC controller ...................................................................................................................... 78
Low-voltage power supply ................................................................................................. 78
Fuser failure detection ....................................................................................... 79
High-voltage power supply ................................................................................................ 80
Laser/scanner system ....................................................................................................................... 81
Laser failure detection ....................................................................................................... 81
Image-formation system ..................................................................................................................... 82
ENWW v
Image-formation process ................................................................................................... 82
Latent-image formation stage ............................................................................................ 83
Step 1: primary charging ................................................................................... 83
Step 2: laser-beam exposure ............................................................................ 84
Developing stage ............................................................................................................... 84
Step 3: development ......................................................................................... 84
Transfer stage .................................................................................................................... 85
Step 4: primary transfer ..................................................................................... 85
Step 5: secondary transfer ................................................................................ 85
Step 6: separation from the drum ...................................................................... 86
Fusing stage ...................................................................................................................... 86
Step 7: fusing .................................................................................................... 86
ITB cleaning stage ............................................................................................................. 87
Step 8: ITB cleaning .......................................................................................... 87
Drum cleaning stage .......................................................................................................... 88
Step 9: drum cleaning ....................................................................................... 88
Developing roller engagement/disengagement control ..................................... 88
Pickup-and-feed system ..................................................................................................................... 89
Jam detection .................................................................................................................... 90
Pad transfer ....................................................................................................................... 90
Multiple-feed prevention .................................................................................................... 90
Scanner system (base models) .......................................................................................................... 91
Scanner power-on sequence of events ............................................................................. 91
Copy or scan-to-computer sequence of events ................................................................. 92
Scanner and ADF functions and operation (fax/memory-card models) ............................................. 93
Scanner functions ............................................................................................................. 93
Scanner operation ............................................................................................................. 94
ADF operation .................................................................................................................... 94
ADF paper path and ADF sensors ..................................................................................... 95
ADF jam detection ............................................................................................................. 96
Memory card system (fax/memory-card models only) ....................................................................... 97
Fax functions and operation (fax/memory-card models only) ............................................................ 98
Computer and network security features ........................................................................... 98
PSTN operation ................................................................................................................. 98
Receive faxes when you hear fax tones ............................................................................ 98
Distinctive ring function ...................................................................................................... 99
Fax by using Voice over IP services .................................................................................. 99
The fax subsystem ........................................................................................................... 100
Fax card in the fax subsystem ......................................................................................... 100
Safety isolation ................................................................................................ 100
Safety-protection circuitry ................................................................................ 100
Data path ......................................................................................................... 101
Hook state ....................................................................................................... 101
Downstream device detection ......................................................................... 101
vi ENWW
Hook switch control ......................................................................................... 101
Ring detect ...................................................................................................... 102
Line current control ......................................................................................... 102
Billing- (metering-) tone filters ......................................................................... 102
Fax page storage in flash memory .................................................................................. 102
Stored fax pages ............................................................................................. 102
Advantages of flash memory storage ............................................................. 102
6 Removal and replacement
Removal and replacement strategy ................................................................................................. 106
General cautions during removal and replacement ......................................................... 106
Electrostatic discharge ..................................................................................................... 106
Required tools ................................................................................................................. 107
Types of screws ............................................................................................................... 107
Service approach ............................................................................................................................. 108
Before performing service ................................................................................................ 108
After performing service ................................................................................................... 108
Post-service tests ............................................................................................................ 109
Test 1 (print-quality test) ................................................................................. 109
Test 2 (copy-quality test) ................................................................................. 109
Test 3 (fax-quality test) .................................................................................... 109
Parts removal order ......................................................................................................... 110
Print cartridges ................................................................................................................................. 111
Control-panel overlay (base model) ................................................................................................. 112
Control panel (base model) .............................................................................................................. 113
Control-panel bezel (fax/memory-card models) ............................................................................... 115
Control panel (fax/memory-card models) ......................................................................................... 116
Reinstall the control panel (fax/memory-card models) .................................................... 116
Paper-feed assemblies ..................................................................................................................... 118
Pickup roller (product base) ............................................................................................. 118
ADF pickup roller assembly ............................................................................................. 119
Separation roller (product base) ...................................................................................... 120
Transfer roller .................................................................................................................. 122
Paper-guide assembly ..................................................................................................... 124
External panels, covers, and doors .................................................................................................. 125
Front door and front-lower cover ..................................................................................... 125
Right cover ....................................................................................................................... 132
Left cover ......................................................................................................................... 135
Front-right cover .............................................................................................................. 137
Reinstall the front-right cover .......................................................................... 138
Memory-card reader PCA (fax/memory-card models only) ............................................. 139
Card cover or blanking cover ........................................................................................... 140
Rear-side cover ............................................................................................................... 142
ENWW vii
Rear-upper cover ............................................................................................................. 143
Rear door and rear-lower cover ....................................................................................... 145
Scanner assembly ........................................................................................................... 147
Top cover ......................................................................................................................... 149
Internal assemblies .......................................................................................................................... 151
Print-cartridge drawer ...................................................................................................... 151
Main motor ....................................................................................................................... 154
Speaker (fax/memory-card models only) ......................................................................... 155
Intermediate transfer belt (ITB) ........................................................................................ 156
Reinstall the ITB .............................................................................................. 159
DC controller PCA ........................................................................................................... 161
Special considerations .................................................................................... 161
Remove the DC controller PCA ...................................................................... 161
Formatter and fax card PCAs .......................................................................................... 165
Special considerations .................................................................................... 165
Remove the formatter PCA ............................................................................. 165
Fuser motor ..................................................................................................................... 168
Power supply (high-voltage) ............................................................................................ 169
Power supply (low voltage) .............................................................................................. 173
Reinstall the power supply (low voltage) ......................................................... 179
Power supply (fuser) ........................................................................................................ 180
Fuser ................................................................................................................................ 183
7 Problem solve
Menu map ........................................................................................................................................ 188
Troubleshooting process .................................................................................................................. 189
Pre-troubleshooting checklist .......................................................................................... 189
Power-on checks ............................................................................................................. 190
Troubleshooting tools ....................................................................................................................... 191
LED diagnostics ............................................................................................................... 191
Network LEDs (network models only) ............................................................. 191
Control panel LEDs ......................................................................................... 191
Memory card LED (fax/memory-card models only) ......................................... 191
Control-panel diagnostics ................................................................................................ 192
Diagrams ......................................................................................................................... 193
Block diagrams ................................................................................................ 193
Scanner and automatic document feeder (ADF) assemblies ......... 193
Major components .......................................................................... 195
Solenoid, sensors, and motors ....................................................... 197
Rollers ............................................................................................ 198
PCAs .............................................................................................. 199
Interface ports ................................................................................................. 200
DC controller PCA ........................................................................................... 201
viii ENWW
Timing diagram ............................................................................................... 203
Circuit diagram ................................................................................................ 204
Print-quality troubleshooting tools .................................................................................... 205
Repetitive image defects ................................................................................. 205
Calibrate the product ....................................................................................... 205
Internal print quality test pages ........................................................................................ 206
Cleaning page ................................................................................................. 206
Service page ................................................................................................... 206
Diagnostics pages ........................................................................................... 206
HP ToolboxFX software ................................................................................................... 208
Control-panel messages .................................................................................................................. 209
Event-log messages ......................................................................................................................... 217
Paper-handling problems ................................................................................................................. 219
Jams ................................................................................................................................ 219
Recover jams .................................................................................................. 219
Common causes of jams ................................................................................. 220
Clear jams ....................................................................................................... 221
Where to look for jams .................................................................... 221
Clear jams from the input-tray areas .............................................. 221
Clear jams from the output-bin ....................................................... 222
Clear jams from the ADF (fax/memory-card models only) ............. 223
Solve image quality problems .......................................................................................................... 227
General image quality problems ...................................................................................... 227
Solve issues with color documents .................................................................................. 231
Copy problems ................................................................................................................. 232
Prevent copy problems ................................................................................... 232
Image problems .............................................................................................. 232
Media-handling problems ................................................................................ 234
Performance problems .................................................................................... 235
Scan problems ................................................................................................................. 236
Solve scanned-image problems ...................................................................... 236
Scan-quality problems ..................................................................................... 238
Prevent scan-quality problems ....................................................... 238
Solve scan-quality problems ........................................................... 238
Solve performance problems ........................................................................................................... 240
Solve connectivity problems ............................................................................................................. 241
Solve direct-connection problems .................................................................................... 241
Solve network problems (network models only) .............................................................. 241
Service mode functions .................................................................................................................... 243
Service menu ................................................................................................................... 24 3
Service menu settings ..................................................................................... 243
Secondary service menu ................................................................................................. 243
Open the secondary service menu ................................................................. 243
Secondary service menu structure .................................................................. 244
ENWW ix
Product resets .................................................................................................................. 245
Restore the factory-set defaults ...................................................................... 245
NVRAM initialization ........................................................................................ 245
Solve fax problems (fax/memory-card models only) ........................................................................ 246
Fax logs and reports ........................................................................................................ 246
Print all fax reports .......................................................................................... 246
Print individual fax reports ............................................................................... 246
Set the fax activity log to print automatically ................................................... 247
Set the fax error report .................................................................................... 247
Set the fax confirmation report ........................................................................ 247
Include the first page of each fax on the fax confirmation, fax error, and last
call reports ....................................................................................................... 248
Perform a fax test ............................................................................................ 248
Change error correction and fax speed ........................................................................... 248
Set the fax-error-correction mode ................................................................... 248
Change the fax speed ..................................................................................... 249
Problems sending faxes .................................................................................................. 249
Problems receiving faxes ................................................................................................. 251
Performance problems .................................................................................................... 254
Memory card problems (fax/memory-card models only) .................................................................. 255
Missing or wrong files ...................................................................................................... 255
Index page not printing .................................................................................................... 255
Proof sheet not printing .................................................................................................... 256
Proof sheet not scanning ................................................................................................. 256
Issues with photo printing ................................................................................................ 257
8 Parts and diagrams
Order parts, accessories, and supplies ............................................................................................ 260
Supplies part numbers ..................................................................................................................... 261
Whole unit replacement .................................................................................................................... 262
How to use the parts lists and diagrams .......................................................................................... 263
Scanner assembly ............................................................................................................................ 264
Product base assembly locations ..................................................................................................... 268
Covers .............................................................................................................................................. 270
Internal assemblies .......................................................................................................................... 272
Alphabetical parts list ....................................................................................................................... 280
Numerical parts list ........................................................................................................................... 286
Appendix A Service and support
Hewlett-Packard limited warranty statement .................................................................................... 293
Customer self repair warranty service .............................................................................................. 294
Print cartridge limited warranty statement ........................................................................................ 295
Customer support ............................................................................................................................. 296
x ENWW
Repack the product .......................................................................................................................... 297
Appendix B Specifications
Physical specifications ..................................................................................................................... 300
Electrical specifications .................................................................................................................... 300
Power consumption .......................................................................................................................... 300
Environmental specifications ............................................................................................................ 301
Acoustic emissions ........................................................................................................................... 301
Skew specifications .......................................................................................................................... 301
Appendix C Regulatory information
FCC regulations ............................................................................................................................... 304
Additional statements for telecom (fax) products ............................................................................. 304
EU statement for telecom operation ................................................................................ 304
New Zealand telecom statements ................................................................................... 304
Telephone Consumer Protection Act (United States) ...................................................... 305
IC CS-03 requirements .................................................................................................... 305
Declarations of conformity ................................................................................................................ 306
HP Color LaserJet CM1312 ............................................................................................. 306
HP Color LaserJet CM1312nfi ......................................................................................... 306
Certificate of volatility ....................................................................................................................... 308
Country/region specific statements .................................................................................................. 309
Laser safety ..................................................................................................................... 309
Canadian DOC regulations .............................................................................................. 309
EMI statement (Korea) ..................................................................................................... 309
Laser statement for Finland ............................................................................................. 309
Substances table (China) ................................................................................................ 310
Index ................................................................................................................................................................. 311
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