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惠普彩色激光打印机CP4020/CP4520维修手册下载
发布时间：2020-02-11 11:20   浏览次数： 次　　
惠普彩色激光打印机CP4020/CP4520维修手册包括第一部分机器的拆卸和备件更换，第二部分故障诊断和排错，第三部分备件图表，第四部分服务和支持；第五部分产品概述。本文给出了获取维修手册的方法。
惠普CP4020打印机维修手册

惠普彩色激光打印机CP4020/CP4520维修手册获取方法；
打印机维修手册可以访问下淘宝链接联系咨询客服：
https://item.taobao.com/item.htm?id=611639732863
惠普彩色激光打印机CP4020/CP4520维修手册目录摘选
1 Theory of operation
Basic operation 2
Sequence of operation 3
Engine-control system ... 4
DC controller . 5
Solenoids ... 5
Clutches ..... 6
Switches ..... 6
Sensors ...... 7
Motors . 8
Fans 9
High-voltage power supply ..... 10
Low-voltage power supply ...... 12
Overcurrent/overvoltage protection .... 13
Safety 13
Voltage detection ... 13
Sleep (powersave) mode ..... 13
Low-voltage power supply failure 13
Fuser control ...... 14
Fuser temperature control .... 15
Fuser sleeve temperature protection . 15
Failure detection ..... 16
Fuser unit identification . 17
Fuser unit life detection . 17
Laser/scanner system . 18
Laser/scanner failure 19
Protective-glass cleaners . 19
Image-formation system ..... 21
Image-formation process . 22
Step 1: Pre-exposure .... 24
Step 2: Primary charging ...... 24
Step 3: Laser-beam exposure ..... 25
Step 4: Development ..... 25
Step 5: Primary transfer 26
ENWW v
Step 6: Secondary transfer .. 26
Step 7: Separation . 27
Step 8: Fusing . 27
Step 9: ITB cleaning ...... 28
Step 10: Drum cleaning . 28
Print cartridge .... 28
Developing-roller engagement and disengagement .. 30
Intermediate transfer belt (ITB) unit ...... 31
Primary-transfer-roller engagement and disengagement ...... 32
ITB cleaning .... 34
Calibration ... 34
Color-misregistration control 35
Image-stabilization control ... 35
Pickup, feed, and delivery system .... 37
Pickup-and-feed unit . 41
Cassette pickup ...... 41
Cassette-presence detection .... 42
Cassette lift operation and cassette paper-presence detection . 43
Cassette multiple-feed prevention ... 43
Multipurpose tray pickup ...... 44
Paper feed 45
Skew-feed prevention . 46
Paper detection ... 47
Feed speed control ..... 48
Fusing and delivery unit ... 48
Loop control .... 49
Pressure-roller pressurization control 50
Duplexing unit (HP Color LaserJet CP4525dn, HP Color LaserJet CP4025dn, and HP
Color LaserJet CP4525xh only) ..... 52
Duplexing reverse and feed control ... 52
Duplex print operation ... 53
Jam detection 55
Optional paper feeder .. 57
Motor control ...... 59
Paper-feeder pickup and feed operation ..... 60
Paper-size detection and cassette-presence detection .... 62
Paper-feeder cassette lift operation ...... 63
Paper feeder jam detection ..... 64
2 Removal and replacement
Introduction .... 68
Removal and replacement strategy . 68
Electrostatic discharge 69
Required tools ..... 69
Before performing service .. 70
After performing service ..... 70
Post-service test ... 71
Print-quality test . 71
Parts removal order ..... 72
Customer self repair (CSR) components 74
Print cartridges ... 74
Toner-collection unit . 76
Formatter PCA ... 78
Hard drive ... 79
Remove the hard drive .. 79
Memory DIMM ... 81
Remove the memory DIMM . 81
Enable memory ... 82
Tray ...... 84
Fuser ... 85
Feed and separation rollers (Trays 2-5) ...... 86
Pickup roller (Tray 1) 87
Secondary transfer roller . 90
Reinstall the transfer roller ... 91
Intermediate transfer belt (ITB) ...... 92
External panels, covers, and doors .. 95
Identification and location 95
Upper-left cover . 96
Power-supply cover .. 98
Left cover .... 99
Remove the left cover ... 99
Front-top cover 100
Remove the front-top cover 100
Rear-top cover . 102
Remove the rear-top cover 102
Right-front cover ..... 103
Remove the right-front cover ..... 103
Reinstall the power button ...... 104
Control-panel assembly . 105
Remove the control-panel assembly 105
Front-door assembly ...... 107
Remove the front-door assembly ..... 107
Right-rear cover ...... 110
Remove the right-rear cover ..... 110
Rear cover 112
Remove the rear cover ...... 112
Right-door assembly ...... 113
Internal assemblies ... 118
Cassette feed guide 118
Secondary transfer assembly ...... 119
Reinstall the secondary transfer assembly .... 120
Separation pad (Tray 1) . 121
Remove the separation pad (Tray 1) ...... 121
Registration density (RD) sensor assembly ...... 124
Remove the RD sensor assembly .... 124
Registration assembly ... 128
Remove the registration assembly ... 129
Residual-toner-feed motor .... 133
Remove the residual-toner-feed motor ... 133
Residual-toner duct and feed assembly .... 134
Remove the residual-toner duct and feed assembly .... 134
Cartridge fan and environmental sensor .... 137
Remove the cartridge fan and environmental sensor .. 137
Toner-collection sensor and scanner-thermistor assembly ... 141
Remove the toner-collection sensor and scanner-thermistor assembly .. 141
Delivery fan ...... 143
Remove the delivery fan .... 143
Delivery assembly ... 145
Remove the delivery assembly . 145
Reinstall the delivery assembly ..... 149
Duplex-drive assembly .. 151
Remove the duplex-drive assembly . 151
Power-supply fan .... 152
Remove the power-supply fan .. 152
Interconnect board (ICB) ...... 153
Remove the ICB ... 153
DC controller PCA only .. 155
Remove the DC controller PCA only 155
Low-voltage power supply (LVPS) ...... 157
Remove the low-voltage power supply ... 157
DC controller PCA and tray .. 161
Remove the DC controller PCA and tray 161
High-voltage power supply lower (HVPS-D) ..... 163
Remove the high-voltage power supply lower ...... 163
Reinstall the high-voltage power supply lower ... 167
Developing-disengagement motor ...... 168
Remove the developing-disengagement motor .... 168
Exhaust fan and fan duct ...... 169
Remove the exhaust fan and fan duct .... 169
Reinstall the exhaust fan and fan duct .... 171
Pickup motor .... 172
Remove the pickup motor .. 172
Lifter-drive assembly ...... 173
Remove the lifter-drive assembly ..... 173
Lifter base assembly ...... 175
Remove the lifter base assembly ..... 175
Reinstall the lifter base assembly ..... 176
Tray-pickup drive assembly .. 178
Remove the tray-pickup drive assembly . 178
Tray-pickup assembly .... 180
Remove the tray-pickup assembly ... 180
Laser/scanner assembly (Y/M) .... 186
Remove the laser/scanner assembly (Y/M) ... 187
Laser/scanner assembly (C/Bk) ... 190
Remove the laser/scanner assembly (C/Bk) .. 191
Reinstall the protective glass cleaner (PGC) actuators .... 193
High-voltage power supply upper (HVPS-T) ..... 196
Remove the high-voltage power supply upper ...... 196
Reinstall the high-voltage power supply upper ... 198
Yellow, magenta, cyan, and black drum motors ...... 199
Remove the yellow, magenta, cyan, and black drum motors ..... 199
Fuser motor ..... 200
Remove the fuser motor ..... 201
ITB motor .. 202
Remove the ITB motor 202
Main-drive assembly ...... 203
Remove the main-drive assembly .... 204
Reinstall the main-drive assembly . 207
Fuser-drive assembly .... 211
Remove the fuser-drive assembly .... 212
Reinstall the fuser-drive assembly . 215
Optional paper feeder assemblies (1 x 500-sheet and 3 x 500-sheet) ... 216
Front door (optional paper feeder) ...... 216
Rear cover (optional paper feeder) ..... 218
Right-front cover (optional paper feeder) ... 219
Right door (optional paper feeder) ...... 220
Left cover (optional paper feeder) 222
Remove the left cover (optional paper feeder) ...... 222
Right cover (optional paper feeder) .... 224
Remove the right cover (optional paper feeder) .... 224
Rear-right cover (optional paper feeder) .... 225
Remove the rear-right cover (optional paper feeder) ... 225
Pickup assembly (optional paper feeder) .. 226
Remove the pickup assembly (optional paper feeder) . 226
Lifter assembly (optional paper feeder) ..... 229
Remove the lifter assembly (optional paper feeder) .... 229
Lifter-drive assembly (optional paper feeder) ... 230
Remove the lifter-drive assembly (optional paper feeder) .. 230
Pickup motor assembly (optional paper feeder) ..... 231
Remove the pickup motor (optional paper feeder) assembly ..... 231
Controller PCA (optional paper feeder) ..... 232
Remove the controller PCA (optional paper feeder) .... 232
3 Solve problems
Solve problems checklist .. 234
Menu map ... 236
Troubleshooting process .. 237
Determine the problem source .... 237
Pre-troubleshooting checklist .... 237
Troubleshooting flowchart .. 239
Power subsystem ... 240
Power-on checks .. 240
Power-on troubleshooting overview ..... 240
Tools for troubleshooting .. 242
Individual component diagnostics 242
LED diagnostics ... 242
Understand lights on the formatter 242
Engine diagnostics ...... 243
Defeating interlocks .. 243
Disable cartridge check ... 244
Engine-test button .... 244
Paper-path test ..... 245
Manual sensor test (special-mode test) .. 246
A TOP (top of page) sensor .... 247
B and C loop sensors ...... 248
D fuser delivery sensor .... 249
E duplex re-pickup sensor ...... 250
F output bin full sensor .... 251
I developer alienation ...... 252
J fuser pressure-release sensor ... 253
K primary transfer-roller-disengagement sensor 254
L media sensor . 256
M front-door switch ... 257
N right-door switch .... 258
Manual sensor test 2 (special-mode test) ...... 259
O Tray 1 paper present sensor ..... 261
P Tray 2 paper present sensor ...... 262
Q Tray 2 paper surface 1 and 2 sensors ..... 263
R Tray 2 paper size switches 264
S Tray 3 paper present sensor ...... 265
T Tray 3 feed sensor 265
U Tray 3 paper surface 1 and 2 sensors ..... 265
V Tray 3 paper size switches .. 265
W Tray 4 paper present sensor ..... 265
X Tray 4 feed sensor 265
Y Tray 4 paper surface 1 and 2 sensors ..... 265
Z Tray 4 paper size switches .. 266
a Tray 5 paper present sensor ...... 266
b Tray 5 feed sensor . 266
c Tray 5 paper surface 1 and 2 sensors ...... 266
d Tray 5 paper size switches .. 266
5V laser and 24V interlock and logic switches (and power
switch) . 267
New ITB sensor . 271
Tray 3, 4, and 5 right door switch .. 272
Paper-path sensors test ..... 273
Print/stop test 273
Component tests .. 274
Component test (special-mode test) ..... 274
Diagrams .. 277
Block diagrams ..... 277
Plug/jack locations ...... 280
Location of connectors 281
DC controller connector locations .. 281
Controller PCA (1 x 500-sheet and 3 x 500-sheet optional paper
feeders) ..... 283
Locations of major components 284
General timing chart .... 294
Circuit diagrams ... 294
HP Easy Printer Care .... 298
Open the HP Easy Printer Care software ...... 299
HP Easy Printer Care software sections . 299
Internal print-quality test pages .... 302
Print-quality-troubleshooting pages .. 302
Diagnostics page .. 305
Cleaning page ...... 306
Configuration page ...... 307
Configuration page ... 307
HP embedded Jetdirect page . 309
Embedded protocol page 310
Finding important information on the configuration pages 311
Color-band test ..... 311
Print-quality troubleshooting tools 312
Repetitive defects ruler ...... 312
Calibrate the product ... 313
Control panel menus ...... 314
Control panel menus ... 314
Show Me How menu 314
Retrieve job menu .... 314
Information menu ...... 317
Paper handling menu ...... 317
Manage supplies menu ... 318
Configure device menu .... 321
Diagnostics menu ..... 342
Service menu ..... 344
Interpret control-panel messages 345
Control-panel message types ... 345
Control-panel messages .... 345
Event log messages ...... 376
Print an event log . 376
Show an event log 376
Sample event log . 377
Clear the event log ...... 377
Event log message table .... 378
Clear paper jams 383
Common causes of jams ...... 383
Jam locations ... 386
Clear jams in the right door ... 387
Clear jams in the output bin area . 390
Clear jams in Tray 1 390
Clear jams in Tray 2 or optional Trays 3, 4, or 5 ...... 392
Clear jams in the lower right door (Tray 3, 4, or 5) .. 393
Jam causes and solutions .... 394
Jams in the output bin . 394
Jams in the fuser and transfer area . 394
Jams in the duplex area (HP Color LaserJet CP4525dn, HP Color LaserJet
CP4025dn, and HP Color LaserJet CP4525xh only) ... 397
Jams in Tray 1, Tray 2 and internal paper path .... 399
Jams in Tray 3, 4, and 5 ..... 400
Change jam recovery ..... 402
Solve paper-handling problems ...... 403
Product feeds multiple sheets ...... 403
Product feeds incorrect page size ...... 403
Product pulls from incorrect tray .. 403
Paper does not feed automatically ..... 404
Paper does not feed from Tray 2, 3, 4, or 5 ...... 404
Transparencies or glossy paper will not feed ... 405
Envelopes jam or will not feed in the product ... 405
Output is curled or wrinkled .. 406
Product will not duplex or duplexes incorrectly . 406
Use manual print modes .. 408
Solve image-quality problems . 410
Image defects table 410
Clean the product ...... 416
Clean the paper path ..... 416
Solve performance problems .. 417
Solve connectivity problems .... 418
Solve direct-connect problems .... 418
Solve network problems 418
Service mode functions .... 420
Service menu ... 420
Product resets .. 423
Restore factory-set defaults ...... 423
Hard disk initialization (optional) ...... 423
NVRAM initialization .... 423
Product cold reset ...... 424
Product updates . 424
4 Parts and diagrams
Order parts, accessories, and supplies . 426
Part numbers ...... 427
Accessories ..... 427
Print cartridges and toner collection unit .... 427
Memory ..... 427
Cables and interfaces .... 427
Customer self repair (CSR) parts 428
Service maintenance kits ...... 428
Unique components 429
Screws .. 430
How to use the parts lists and diagrams ...... 431
External covers, panels, and doors 432
Right door assembly .. 434
Front door assembly .. 436
Internal components .. 438
Internal components (1 of 7) . 438
Internal components (2 of 7) . 440
Internal components (3 of 7) . 442
Internal components (4 of 7) . 444
Internal components (5 of 7) . 446
Internal components (6 of 7) . 448
ENWW xiii
Internal components (7 of 7) . 450
Cassettes 2-5 ... 452
Paper pickup assembly .. 454
Tray 1 paper pickup assembly ..... 456
Registration assembly ... 458
Secondary transfer assembly ...... 460
Delivery assembly ... 462
Fuser assembly ...... 464
PCAs .. 466
Assessories . 468
Paper feeders .. 468
Paper feeder external covers, panels, and doors .... 470
1 X 500 paper feeder main body . 472
3 X 500 paper feeder main body . 474
Alphabetical parts list 476
Numerical parts list .... 484
打印机维修手册可以访问下淘宝链接联系咨询客服：
https://item.taobao.com/item.htm?id=611639732863
武汉打印机复印机绘图仪维修服务台专注打印机复印机绘图仪的应用以及故障排除和维修；武汉打印机复印机绘图仪维修服务台收集了这些设备的一般常识性问题和技术性问题及其解决方案；同时收集了部分打印机、复印机和绘图仪维修手册，以供需要者参考和研究之用。通过浏览查阅本站相关内容，可以解决在使用过程中遇到的某些故障和使用问题。本站资深工程师从事办公设备维修近二十年，尤其是对惠普大幅面打印机绘图仪的维修服务，具有丰富的售后维修服务经验。我们专业提供湖北武汉周边地区惠普绘图仪快速上门维修服务。对其他地区用户提供远程维修咨询服务。
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