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惠普M402 M403 M426 M427打印机维修手册排错拆装图解手册
发布时间:2018-06-10 20:26   浏览次数: 次  
惠普M402 M403 M426 M427打印机维修手册包含机器拆装手册:备件拆卸的详细步骤和更换以及备件列表和图示;故障诊断手册:工作原理介绍和故障诊断与排除,包括维修模式的进入和使用等。文中给出了手册的获取方法
惠普M402打印机维修手册
惠普M402 M403 M426 M427打印机维修手册
https://item.taobao.com/item.htm?id=559964135975

打印机拆装手册
Table of contents
1 Removal and replacement ..... 1
机器拆卸和备件更换
For additional service and support .......... 2
Removal and replacement strategy ........ 3
Introduction ..... 3
Considerations during removal and replacement . 3
Electrostatic discharge .......... 4
Required tools . 4
Fasteners used in this printer 5
Service approach ..... 6
Before performing service .... 6
After performing service ....... 6
Post-service test ......... 6
Print-quality test . 6
Removal and replacement procedures ... 7
Customer self-repair (CSR) A parts and assemblies ......... 7
RL2-0656-000CN multipurpose tray roller .... 8
Introduction . 8
Step 1: Remove the roller .. 8
Step 2: Unpack the replacement assembly ...... 10
Step 3: Install the roller ... 11
RM2-5392-000CN 250-sheet paper input tray ....... 13
Introduction .......... 13
Step 1: Remove Tray 2 ..... 13
Step 2: Unpack the replacement assembly ...... 14
Step 3: Install Tray 2 ........ 14
RM2-5413-000CN optional Tray 3 .... 16
Introduction .......... 16
Step 1: Remove optional Tray 3 . 16
Step 2: Unpack the replacement assembly ...... 17
Step 3: Install optional Tray 3 .... 18
RM2-5452-000CN Tray 2 paper pickup roller assembly .... 20
Introduction .......... 20
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Step 1: Remove Tray 2 ..... 20
Step 2: Remove the pickup roller assembly (Tray 2) .. 21
Step 3: Unpack the replacement assembly ...... 23
Step 4: Install the pickup roller assembly (Tray 2) ...... 24
Step 5: Install Tray 2 ........ 25
RM2-5741-000CN optional Tray 3 paper pickup roller assembly 27
Introduction .......... 27
Step 1: Remove optional Tray 3 . 27
Step 2: Remove the paper pickup roller assembly (optional Tray 3) 28
Step 3: Unpack the replacement assembly ...... 30
Step 4: Install the paper pickup roller assembly (optional Tray 3) ... 31
Step 5: Install optional Tray 3 .... 32
RM2-5397-000CN Tray 2 separation roller assembly ....... 34
Introduction .......... 34
Step 1: Remove Tray 2 ..... 34
Step 2: Remove the separation pad roller assembly (Tray 2) 35
Step 3: Unpack the replacement assembly ...... 36
Step 4: Install the separation pad roller assembly (Tray 2) ... 36
Step 5: Install Tray 2 ........ 37
RM2-5745-000CN optional Tray 3 separation roller assembly .... 39
Introduction .......... 39
Step 1: Remove Tray 3 ..... 39
Step 2: Remove the separation roller assembly (optional Tray 3) ... 40
Step 3: Unpack the replacement assembly ...... 41
Step 4: Install the separation roller assembly (optional Tray 3) ...... 42
Step 5: Install Tray 3 ........ 43
Removal and replacement: External panels, covers, and doors .......... 45
Removal and replacement: Damper sheets . 46
Introduction .......... 46
Step 1: Remove the damper sheets ...... 46
Step 2: Unpack the replacement assembly ...... 47
Step 3: Install the damper sheets ......... 47
Removal and replacement: Rear USB cover . 46
Introduction .......... 49
Step 1: Remove the rear USB cover ....... 49
Step 2: Unpack the replacement assembly ...... 50
Step 3: Install the rear USB cover .......... 51
Removal and replacement: Support shaft ... 53
Introduction .......... 53
Step 1: Remove the support shaft ........ 53
Step 2: Unpack the replacement assembly ...... 54
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Step 3: Install the support shaft 55
Removal and replacement: Cartridge door assembly ........ 57
Introduction .......... 57
Step 1: Remove the cartridge door assembly .. 57
Step 2: Unpack the replacement assembly ...... 60
Step 3: Install the cartridge door assembly ..... 61
Removal and replacement: Pressure-release link .. 64
Introduction .......... 64
Step 1: Remove the cartridge door assembly .. 64
Step 2: Remove the pressure-release link ....... 67
Step 3: Unpack the replacement assembly ...... 68
Step 4: Install the pressure-release link .......... 68
Step 5: Install the cartridge door assembly ..... 69
Removal and replacement: Left cover .......... 73
Introduction .......... 73
Step 1: Remove the rear USB cover ....... 74
Step 2: Remove the rear network cover (M402d and M403d) .......... 75
Step 3: Remove Tray 2 ..... 75
Step 4: Remove the cartridge door assembly .. 76
Step 5: Remove the left cover .... 78
Step 6: Unpack the replacement assembly ...... 80
Step 7: Install the left cover ....... 80
Step 8: Install the cartridge door assembly ..... 82
Step 9: Install Tray 2 ........ 85
Step 10: Install the rear network cover (M402d and M403d) 85
Step 11: Install the rear USB cover ........ 85
Removal and replacement: Right cover ....... 87
Introduction .......... 87
Step 1: Remove Tray 2 ..... 87
Step 2: Remove the cartridge door assembly .. 88
Step 3: Remove the right cover .. 90
Step 4: Unpack the replacement assembly ...... 91
Step 5: Install the right cover ..... 92
Step 6: Install the cartridge door assembly ..... 94
Step 7: Install Tray 2 ........ 97
Removal and replacement: Rear door assembly .... 98
Introduction .......... 98
Step 1: Remove Tray 2 ..... 99
Step 2: Remove the cartridge door assembly .. 99
Step 3: Remove the left cover .. 102
Step 4: Remove the right cover 103
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Step 5: Remove the rear door assembly ........ 104
Step 6: Unpack the replacement assembly ... 105
Step 7: Install the rear door assembly 106
Step 8: Install the right cover ... 107
Step 9: Install the left cover ..... 109
Step 10: Install the cartridge door assembly . 110
Step 11: Install Tray 2 .... 113
Removal and replacement: Cassette rear cover ... 114
Introduction ........ 114
Step 1: Remove Tray 2 ... 115
Step 2: Remove the cartridge door assembly 115
Step 3: Remove the left cover .. 118
Step 4: Remove the right cover 119
Step 5: Remove the rear door assembly ........ 120
Step 6: Remove the cassette rear cover ........ 121
Step 7: Unpack the replacement assembly ... 123
Step 8: Install the cassette rear door assembly ....... 124
Step 9: Install the rear door assembly 125
Step 10: Install the right cover . 125
Step 11: Install the left cover ... 127
Step 12: Install the cartridge door assembly . 128
Step 13: Install Tray 2 .... 132
Removal and replacement: Top cover (M427/M426) ....... 133
Introduction ........ 133
Step 1: Remove Tray 2 ... 134
Step 2: Remove the cartridge door assembly 134
Step 3: Remove the left cover .. 137
Step 4: Remove the right cover 138
Step 5: Remove the integrated scanner assembly (M427/M426) .. 140
Step 6: Remove the control panel (M427/M426) ...... 144
Step 7: Remove the top cover (M427/M426) . 148
Step 8: Unpack the replacement assembly ... 149
Step 9: Remove the cable guide (M427/M426) ......... 150
Step 10: Install the cable guide (M427/M426) .......... 151
Step 11: Install the top cover (M427/M426) .. 153
Step 12: Install the control panel (M427/M426) ....... 155
Step 13: Install the integrated scanner assembly (M427/M246) ... 159
Step 14: Install the right cover . 164
Step 15: Install the left cover ... 166
Step 16: Install the cartridge door assembly . 167
Step 17: Install Tray 2 .... 171
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Removal and replacement: Cable guide (M427/M426) .... 172
Introduction ........ 172
Step 1: Remove Tray 2 ... 173
Step 2: Remove the cartridge door assembly 173
Step 3: Remove the left cover .. 176
Step 4: Remove the right cover 177
Step 5: Remove the control panel (M427/M426) ...... 178
Step 6: Remove the integrated scanner assembly (M427/M246) .. 182
Step 7: Remove the top cover (M427/M426) . 187
Step 8: Remove the cable guide (M427/M426) ......... 188
Step 9: Unpack the replacement assembly ... 190
Step 10: Install the cable guide (M427/M426) .......... 190
Step 11: install the top cover (M427/M426) .. 192
Step 12: Install the integrated scanner assembly (M427/M246) ... 194
Step 13: Install the control panel (M427/M426) ....... 199
Step 14: Install the right cover . 203
Step 15: Install the left cover ... 205
Step 16: Install the cartridge door assembly . 206
Step 17: Install Tray 2 .... 210
Removal and replacement: Top cover (M403/M402) ....... 211
Introduction ........ 211
Step 1: Remove Tray 2 ... 212
Step 2: Remove the cartridge door assembly 212
Step 3: Remove the left cover .. 215
Step 4: Remove the right cover 216
Step 5: Remove the top cover (M403/M402) . 217
Step 6: Remove the 2-line LCD operator and indication covers (M403/
M402) ....... 219
Step 7: Unpack the replacement assembly ... 220
Step 8: Install the 2-line LCD operator and indication covers (M403/
M402) ....... 221
Step 9: Install the top cover (M403/M402) .... 222
Step 10: Install the right cover . 224
Step 11: Install the left cover ... 226
Step 12: Install the cartridge door assembly . 227
Step 13: Install Tray 2 .... 231
Removal and replacement: 2-line LCD operator and indication covers (M403/
M402) ... 232
Introduction ........ 232
Step 1: Remove Tray 2 ... 233
Step 2: Remove the cartridge door assembly 233
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Step 3: Remove the left cover .. 236
Step 4: Remove the right cover 237
Step 5: Remove the top cover (M403/M402) . 238
Step 6: Remove the 2-line LCD operator and indication covers (M403/
M402) ....... 240
Step 7: Unpack the replacement assembly ... 241
Step 8: Install the 2-line LCD operator and indication covers (M403/
M402) ....... 242
Step 9: Install the top cover (M403/M402) .... 243
Step 10: Install the right cover . 245
Step 11: Install the left cover ... 247
Step 12: Install the cartridge door assembly . 248
Step 13: Install Tray 2 .... 252
Removal and replacement: Paper delivery tray (output bin) ...... 253
Introduction ........ 253
Step 1: Remove Tray 2 ... 254
Step 2: Remove the cartridge door assembly 255
Step 3: Remove the left cover .. 257
Step 4: Remove the right cover 258
Step 5: Remove the integrated scanner assembly (M427/M246) .. 259
Step 6: Remove the control panel (M427/M246) ...... 264
Step 7: Remove the top cover (M427/M426) . 268
Step 8: Remove the top cover (M403/M402) . 269
Step 9: Remove the paper delivery tray (output bin) .......... 271
Step 10: Unpack the replacement assembly . 272
Step 11: Install the paper delivery tray (output bin) 272
Step 12: Install the top cover (M403/M402) .. 273
Step 13: Install the top cover (M427/M426) .. 275
Step 14: Install the control panel (M427/M246) ....... 277
Step 15: Install the integrated scanner assembly (M427/M246) ... 281
Step 16: Install the right cover . 286
Step 17: Install the left cover ... 288
Step 18: Install the cartridge door assembly . 289
Step 19: Install Tray 2 .... 293
Removal and replacement: Integrated scanner assembly (M427/M426) ........ 294
Introduction ........ 294
Step 1: Remove Tray 2 ... 295
Step 2: Remove the cartridge door assembly 295
Step 3: Remove the left cover .. 298
Step 4: Remove the ISA (M427/M426) 299
Step 5: Unpack the replacement assembly ... 304
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Step 6: Install the ISA (M427/M426) ... 305
Step 7: Install the left cover ..... 310
Step 8: Install the cartridge door assembly ... 311
Step 9: Install Tray 2 ...... 315
Removal and replacement: ISA lift assembly and slider pin (M427/M426) ..... 294
Introduction ........ 316
Step 1: Remove the slider pin (M427/M426) . 317
Step 2: Remove the ISA lift assembly (M427/M426) 317
Step 3: Unpack the replacement assembly ... 319
Step 4: Install the ISA lift assembly (M427/M426) ... 320
Step 5: Install the slider pin (M427/M426) .... 322
Removal and replacement: Internal parts and assemblies ..... 324
Removal and replacement: Fuser .... 325
Introduction ........ 325
Step 1: Remove Tray 2 ... 326
Step 2: Remove the cartridge door assembly 326
Step 3: Remove the left cover .. 329
Step 4: Remove the right cover 330
Step 5: Remove the rear door assembly ........ 331
Step 6: Remove the fuser ......... 332
Step 7: Unpack the replacement assembly ... 335
Step 8: Install the fuser . 336
Step 9: Install the rear door assembly 339
Step 10: Install the right cover . 340
Step 11: Install the left cover ... 342
Step 12: Install the cartridge door assembly . 343
Step 13: Install Tray 2 .... 346
Removal and replacement: Registration assembly ......... 347
Introduction ........ 347
Step 1: Remove Tray 2 ... 348
Step 2: Remove the cartridge door assembly 349
Step 3: Remove the left cover .. 351
Step 4: Remove the right cover 353
Step 5: Remove the rear door assembly ........ 354
Step 6: Remove the integrated scanner assembly (M427/M246) .. 355
Step 7: Remove the control panel (M427/M426) ...... 360
Step 8: Remove the top cover (M427/M426) . 364
Step 9: Remove the top cover (M403/M402) . 365
Step 10: Remove the paper delivery tray (output bin) ........ 366
Step 11: Remove the fuser ....... 367
Step 12: Remove the registration assembly .. 370
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Step 13: Unpack the replacement assembly . 373
Step 14: Install the registration assembly ..... 374
Step 15: Install the fuser .......... 376
Step 16: Install the paper delivery tray (output bin) 379
Step 17: Install the top cover (M403/M402) .. 380
Step 18: Install the top cover (M427/M426) .. 382
Step 19: Install the control panel (M427/M246) ....... 384
Step 20: Install the integrated scanner assembly (M427/M246) ... 388
Step 21: Install the rear door assembly ......... 393
Step 22: Install the right cover . 394
Step 23: Install the left cover ... 396
Step 24: Install the cartridge door assembly . 397
Step 25: Install Install Tray 2 .... 401
Removal and replacement: Main motor (M1) ........ 402
Introduction ........ 402
Step 1: Remove Tray 2 ... 403
Step 2: Remove the cartridge door assembly 403
Step 3: Remove the right cover 405
Step 4: Remove the main motor (M1) . 406
Step 5: Unpack the replacement assembly ... 407
Step 6: Install the main motor (M1) .... 407
Step 7: Install the right cover ... 408
Step 8: Install the cartridge door assembly ... 410
Step 9: Install Tray 2 ...... 413
Removal and replacement: Power switch printed circuit assembly ...... 414
Introduction ........ 414
Step 1: Remove Tray 2 ... 415
Step 2: Remove the cartridge door assembly 415
Step 3: Remove the right cover 418
Step 4: Remove the power switch PCA 419
Step 5: Unpack the replacement assembly ... 421
Step 6: Install the power switch PCA ... 422
Step 7: Install the right cover ... 423
Step 8: Install the cartridge door assembly ... 425
Step 9: Install Tray 2 ...... 428
Removal and replacement: Fax PCA (M427/M426) .......... 429
Introduction ........ 429
Step 1: Remove Tray 2 ... 430
Step 2: Remove the cartridge door assembly 430
Step 3: Remove the left cover .. 433
Step 4: Remove the fax PCA (M427/M426) .... 434
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Step 5: Unpack the replacement assembly ... 435
Step 6: Install the fax PCA (M427/M426) ....... 436
Step 7: Install the left cover ..... 437
Step 8: Install the cartridge door assembly ... 438
Step 9: Install Tray 2 ...... 442
Removal and replacement: Walkup USB PCA (M427/M426) ....... 443
Introduction ........ 443
Step 1: Remove Tray 2 ... 444
Step 2: Remove the cartridge door assembly 444
Step 3: Remove the left cover .. 447
Step 4: Remove the fax PCA ..... 448
Step 5: Remove the walkup USB PCA (M427/M426) . 449
Step 6: Unpack the replacement assembly ... 451
Step 7: Install the walkup USB PCA (M427/M426) .... 451
Step 8: Install the fax PCA ........ 453
Step 9: Install the left cover ..... 454
Step 10: Install the cartridge door assembly . 455
Step 9: Install Tray 2 ...... 459
Removal and replacement: Wireless PCA ... 460
Introduction ........ 460
Step 1: Remove Tray 2 ... 461
Step 2: Remove the cartridge door assembly 461
Step 3: Remove the left cover .. 464
Step 4: Remove the wireless PCA ........ 465
Step 5: Unpack the replacement assembly ... 466
Step 6: Install the wireless PCA 467
Step 7: Install the left cover ..... 468
Step 8: Install the cartridge door assembly ... 469
Step 9: Install Tray 2 ...... 473
Removal and replacement: Formatter PCA 474
Introduction ........ 474
Step 1: Remove Tray 2 ... 475
Step 2: Remove the cartridge door assembly 475
Step 3: Remove the left cover .. 478
Step 4: Remove the fax PCA ..... 479
Step 5: Remove the wireless PCA ........ 480
Step 6: Remove the formatter PCA ..... 481
Step 7: Unpack the replacement assembly ... 483
Step 8: Install the formatter PCA ........ 483
Step 9: Install the wireless PCA 485
Step 10: Install the fax PCA ...... 486
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Step 11: Install the left cover ... 487
Step 12: Install the cartridge door assembly . 488
Step 13: Install Tray 2 .... 492
Removal and replacement: Fan (FM1) ........ 493
Introduction ........ 493
Step 1: Remove Tray 2 ... 494
Step 2: Remove the cartridge door assembly 494
Step 3: Remove the left cover .. 496
Step 4: Remove the fan (FM1) .. 498
Step 5: Unpack the replacement assembly ... 499
Step 6: Install the fan (FM1) ..... 500
Step 7: Install the left cover ..... 501
Step 8: Install the cartridge door assembly ... 502
Step 9: Install Tray 2 ...... 506
Removal and replacement: Fan holder (FM1) ....... 507
Introduction ........ 507
Step 1: Remove Tray 2 ... 508
Step 2: Remove the cartridge door assembly 508
Step 3: Remove the left cover .. 511
Step 4: Remove the fan (FM1) .. 512
Step 5: Remove the fan holder (FM1) .. 514
Step 6: Unpack the replacement assembly ... 516
Step 7: Install the fan holder (FM1) ..... 517
Step 8: Install the fan (FM1) ..... 518
Step 9: Install the left cover ..... 519
Step 10: Install the cartridge door assembly . 521
Step 11: Install Tray 2 .... 524
Removal and replacement: Laser scanner assembly ...... 525
Introduction ........ 525
Step 1: Remove Tray 2 ... 526
Step 2: Remove the cartridge door assembly 526
Step 3: Remove the left cover .. 529
Step 4: Remove the right cover 530
Step 5: Remove the integrated scanner assembly (M427/M246) .. 531
Step 6: Remove the control panel (M427/M246) ...... 536
Step 7: Remove the top cover (M427/M426) . 540
Step 8: Remove the top cover (M403/M402) . 541
Step 9: Remove the paper delivery tray (output bin) .......... 543
Step 10: Remove the laser scanner assembly .......... 544
Step 11: Unpack the replacement assembly . 544
Step 12: Install the laser scanner assembly .. 545
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Step 13: Install the paper delivery tray (output bin) 546
Step 14: Install the top cover (M403/M402) .. 546
Step 15: Install the top cover (M427/M426) .. 548
Step 16: Install the control panel (M427/M246) ....... 551
Step 17: Install the integrated scanner assembly (M427/M246) ... 555
Step 18: Install the right cover . 560
Step 19: Install the left cover ... 562
Step 20: Install the cartridge door assembly . 563
Step 21: Install Tray 2 .... 566
Removal and replacement: Sheet-metal formatter bracket and formatter PCA ........ 567
Step 1: Remove Tray 2 ... 567
Step 2: Remove the cartridge door assembly 568
Step 3: Remove the left cover .. 570
Step 4: Remove the right cover 572
Step 5: Remove the integrated scanner assembly (M427/M246) .. 573
Step 6: Remove the control panel (M427/M246) ...... 578
Step 7: Remove the top cover (M427/M426) . 582
Step 8: Remove the top cover (M403/M402) . 583
Step 9: Remove the sheet-metal formatter bracket and formatter PCA .. 584
Step 10: Install the sheet-metal formatter bracket and formatter PCA ... 587
Step 11: Install the top cover (M403/M402) .. 589
Step 12: Install the top cover (M427/M426) .. 590
Step 13: Install the control panel (M427/M246) ....... 593
Step 14: Install the integrated scanner assembly (M427/M246) ... 597
Step 15: Install the right cover . 602
Step 16: Install the left cover ... 604
Step 17: Install the cartridge door assembly . 605
Step 18: Install Tray 2 .... 608
Removal and replacement: NFC FFC 609
Introduction ........ 609
Step 1: Remove Tray 2 ... 610
Step 2: Remove the cartridge door assembly 611
Step 3: Remove the left cover .. 613
Step 4: Remove the right cover 615
Step 5: Remove the integrated scanner assembly (M427/M246) .. 616
Step 6: Remove the control panel (M427/M246) ...... 621
Step 7: Remove the top cover (M427/M426) . 625
Step 8: Remove the NFC PCA cover (M427/M426) .... 626
Step 9: Remove the top cover (M403/M402) . 627
Step 10: Remove the paper delivery tray (output bin) ........ 628
Step 11: Remove the NFC PCA .. 629
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Step 12: Remove the NFC FFC .. 629
Step 13: Unpack the replacement assembly . 631
Step 14: Install the NFC FFC ..... 631
Step 15: Install the NFC PCA ..... 633
Step 16: Install the paper delivery tray (output bin) 635
Step 17: Install the top cover (M403/M402) .. 635
Step 18: Install the NFC PCA cover (M427/M426) ..... 637
Step 19: Install the top cover (M427/M426) .. 638
Step 20: Install the control panel (M427/M246) ....... 640
Step 21: Install the integrated scanner assembly (M427/M246) ... 644
Step 22: Install the right cover . 649
Step 23: Install the left cover ... 651
Step 24: Install the cartridge door assembly . 652
Step 25: Install Tray 2 .... 655
Removal and replacement: Control panel FFC, (M403/M402) .... 656
Introduction ........ 656
Step 1: Remove Tray 2 ... 657
Step 2: Remove the cartridge door assembly 657
Step 3: Remove the left cover .. 660
Step 4: Remove the right cover 661
Step 5: Remove the top cover (M403/M402) . 662
Step 6: Remove the paper delivery tray (output bin) .......... 664
Step 7: Remove the control panel FFC 665
Step 8: Unpack the replacement assembly ... 666
Step 9: Install the control panel FFC ... 666
Step 10: Install the paper delivery tray (output bin) 668
Step 11: Install the top cover (M403/M402) .. 668
Step 12: Install the right cover . 670
Step 13: Install the left cover ... 672
Step 14: Install the cartridge door assembly . 673
Step 15: Install Tray 2 .... 677
Removal and replacement: Formatter FFC 678
Introduction ........ 678
Step 1: Remove Tray 2 ... 679
Step 2: Remove the cartridge door assembly 680
Step 3: Remove the left cover .. 682
Step 4: Remove the right cover 683
Step 5: Remove the integrated scanner assembly (M427/M246) .. 684
Step 6: Remove the control panel (M427/M246) ...... 689
Step 7: Remove the top cover (M427/M426) . 693
Step 8: Remove the top cover (M403/M402) . 694
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Step 9: Remove the sheet-metal formatter bracket and formatter PCA .. 696
Step 10: Remove the formatter FFC .... 698
Step 11: Unpack the replacement assembly . 699
Step 12: Install the formatter FFC ....... 700
Step 13: Install the sheet-metal formatter bracket and formatter PCA ... 701
Step 14: Install the top cover (M403/M402) .. 703
Step 15: Install the top cover (M427/M426) .. 705
Step 16: Install the control panel (M427/M246) ....... 708
Step 17: Install the integrated scanner assembly (M427/M246) ... 712
Step 18: Install the right cover . 717
Step 19: Install the left cover ... 719
Step 20: Install the cartridge door assembly . 720
Step 21: Install Tray 2 .... 723
Removal and replacement: DC controller ... 724
Introduction ........ 724
Step 1: Remove Tray 2 ... 725
Step 2: Remove the cartridge door assembly 726
Step 3: Remove the left cover .. 728
Step 4: Remove the right cover 730
Step 5: Remove the rear door assembly ........ 731
Step 6: Remove the integrated scanner assembly (M427/M246) .. 732
Step 7: Remove the control panel (M427/M246) ...... 737
Step 8: Remove the top cover (M427/M426) . 741
Step 9: Remove the top cover (M403/M402) . 742
Step 10: Remove the paper delivery tray (output bin) ........ 743
Step 11: Remove the sheet-metal formatter bracket and formatter ....... 744
Step 12: Remove the DC controller ..... 746
Step 13: Unpack the replacement assembly . 748
Step 14: Install the DC controller ........ 749
Step 15: Install the sheet-metal formatter bracket and formatter .......... 751
Step 16: Install the paper delivery tray (output bin) 754
Step 17: Install the top cover (M403/M402) .. 754
Step 18: Install the top cover (M427/M426) .. 756
Step 19: Install the control panel (M427/M246) ....... 758
Step 20: Install the integrated scanner assembly (M427/M246) ... 762
Step 21: Install the rear door assembly ......... 767
Step 22: Install the right cover . 768
Step 23: Install the left cover ... 770
Step 24: Install the cartridge door assembly . 771
Step 25: Install Tray 2 .... 775
Removal and replacement: Tag-cable assembly (toner-cartridge memory) ... 776
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Introduction ........ 776
Step 1: Remove Tray 2 ... 777
Step 2: Remove the cartridge door assembly 778
Step 3: Remove the left cover .. 780
Step 4: Remove the right cover 781
Step 5: Remove the integrated scanner assembly (M427/M246) .. 782
Step 6: Remove the control panel (M427/M246) ...... 787
Step 7: Remove the top cover (M427/M426) . 791
Step 8: Remove the top cover (M403/M402) . 792
Step 9: Remove the paper delivery tray (output bin) .......... 794
Step 10: Remove the sheet-metal formatter bracket and formatter
PCA 795
Step 11: Remove the tag-cable assembly (toner-cartridge memory) ...... 797
Step 12: Unpack the replacement assembly . 798
Step 13: Install the tag-cable assembly (toner-cartridge memory) ......... 799
Step 14: Install the sheet-metal formatter bracket and formatter PCA ... 800
Step 15: Install the paper delivery tray (output bin) 803
Step 16: Install the top cover (M403/M402) .. 803
Step 17: Install the top cover (M427/M426) .. 805
Step 18: Install the control panel (M427/M246) ....... 807
Step 19: Install the integrated scanner assembly (M427/M246) ... 811
Step 20: Install the right cover . 816
Step 21: Install the left cover ... 818
Step 22: Install the cartridge door assembly . 819
Step 23: Install Tray 2 .... 823
Removal and replacement: Connecting PCA ......... 824
Introduction ........ 824
Step 1: Remove Tray 2 ... 825
Step 2: Remove the cartridge door assembly 826
Step 3: Remove the left cover .. 828
Step 4: Remove the right cover 830
Step 5: Remove the integrated scanner assembly (M427/M246) .. 831
Step 6: Remove the control panel (M427/M246) ...... 836
Step 7: Remove the top cover (M427/M426) . 840
Step 8: Remove the top cover (M403/M402) . 841
Step 9: Remove the paper delivery tray (output bin) .......... 842
Step 10: Remove the sheet-metal formatter bracket and formatter
PCA 843
Step 11: Remove the connecting PCA . 845
Step 12: Unpack the replacement assembly . 847
Step 13: Install the connecting PCA .... 847
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Step 14: Install the sheet-metal formatter bracket and formatter PCA ... 849
Step 15: Install the paper delivery tray (output bin) 851
Step 16: Install the top cover (M403/M402) .. 852
Step 17: Install the top cover (M427/M426) .. 854
Step 18: Install the control panel (M427/M246) ....... 856
Step 19: Install the integrated scanner assembly (M427/M246) ... 860
Step 20: Install the right cover . 865
Step 21: Install the left cover ... 867
Step 22: Install the cartridge door assembly . 868
Step 23: Install Tray 2 .... 872
Removal and replacement: Laser scanner FFC ..... 873
Introduction ........ 873
Step 1: Remove Tray 2 ... 874
Step 2: Remove the cartridge door assembly 875
Step 3: Remove the left cover .. 877
Step 4: Remove the right cover 879
Step 5: Remove the integrated scanner assembly (M427/M246) .. 880
Step 6: Remove the control panel (M427/M246) ...... 885
Step 7: Remove the top cover (M427/M426) . 889
Step 8: Remove the top cover (M403/M402) . 890
Step 9: Remove the paper delivery tray (output bin) .......... 891
Step 10: Remove the sheet-metal formatter bracket and formatter
PCA 892
Step 11: Remove the tag-cable assembly ..... 894
Step 12: Remove the laser scanner FFC ......... 896
Step 13: Unpack the replacement assembly . 898
Step 14: Install the laser scanner FFC . 899
Step 15: Install the tag-cable assembly ........ 901
Step 16: Install the sheet-metal formatter bracket and formatter PCA ... 903
Step 17: Install the paper delivery tray (output bin) 905
Step 18: Install the top cover (M403/M402) .. 906
Step 19: Install the top cover (M427/M426) .. 908
Step 20: Install the control panel (M427/M246) ....... 910
Step 21: Install the integrated scanner assembly (M427/M246) ... 914
Step 22: Install the right cover . 919
Step 23: Install the left cover ... 921
Step 24: Install the cartridge door assembly . 922
Step 25: Install Tray 2 .... 926
Removal and replacement: High-voltage power supply .. 927
Introduction ........ 927
Step 1: Remove Tray 2 ... 928
ENWW xxi
Step 2: Remove the cartridge door assembly 929
Step 3: Remove the left cover .. 931
Step 4: Remove the right cover 932
Step 5: Remove the integrated scanner assembly (M427/M246) .. 933
Step 6: Remove the control panel (M427/M246) ...... 938
Step 7: Remove the top cover (M427/M426) . 942
Step 8: Remove the top cover (M403/M402) . 943
Step 9: Remove the paper delivery tray (output bin) .......... 945
Step 10: Remove the sheet-metal formatter bracket and formatter
PCA 946
Step 11: Remove the HVPS ....... 948
Step 12: Unpack the replacement assembly . 950
Step 13: Install the HVPS .......... 951
Step 14: Install the sheet-metal formatter bracket and formatter PCA ... 953
Step 15: Install the paper delivery tray (output bin) 956
Step 16: Install the top cover (M403/M402) .. 956
Step 17: Install the top cover (M427/M426) .. 958
Step 18: Install the control panel (M427/M246) ....... 960
Step 19: Install the integrated scanner assembly (M427/M246) ... 964
Step 20: Install the right cover . 969
Step 21: Install the left cover ... 971
Step 22: Install the cartridge door assembly . 972
Step 23: Install Tray 2 .... 976
Removal and replacement: Low-voltage power supply .. 977
Introduction ........ 977
Step 1: Remove Tray 2 ... 978
Step 2: Remove the cartridge door assembly 979
Step 3: Remove the left cover .. 981
Step 4: Remove the right cover 983
Step 5: Remove the integrated scanner assembly (M427/M246) .. 984
Step 6: Remove the control panel (M427/M246) ...... 989
Step 7: Remove the top cover (M427/M426) . 993
Step 8: Remove the top cover (M403/M402) . 994
Step 9: Remove the paper delivery tray (output bin) .......... 995
Step 10: Remove the fan (FM1) 996
Step 11: Remove the sheet-metal formatter bracket and formatter
PCA 997
Step 12: Remove the LVPS ....... 999
Step 13: Unpack the replacement assembly .......... 1003
Step 14: Install the LVPS ........ 1004
Step 15: Install the sheet-metal formatter bracket and formatter PCA . 1008
xxii ENWW
Step 16: Install the fan (FM1) . 1010
Step 17: Install the paper delivery tray (output bin) ......... 1011
Step 18: Install the top cover (M403/M402) 1012
Step 19: Install the top cover (M427/M426) 1014
Step 20: Install the control panel (M427/M246) .... 1016
Step 21: Install the integrated scanner assembly (M427/M246) . 1020
Step 23: Install the right cover .......... 1025
Step 24: Install the left cover ... 519
Step 25: Install the cartridge door assembly ......... 1028
Step 26: Install Tray 2 . 1032
Removal and replacement: NFC cover (M427/M426) .... 1033
Introduction ...... 1033
Step 1: Remove Tray 2 . 1034
Step 2: Remove the cartridge door assembly ........ 1034
Step 3: Remove the left cover 1037
Step 4: Remove the right cover ......... 1038
Step 6: Remove the integrated scanner assembly (M427/M246) 1040
Step 5: Remove the control panel (M427/M426) ... 1044
Step 7: Remove the top cover (M427/M426) .......... 1048
Step 8: Remove the NFC cover (M427/M426) ......... 1049
Step 9: Unpack the replacement assembly . 1050
Step 10: Install the NFC cover (M427/M426) .......... 1050
Step 11: Install the top cover (M427/M426) 1051
Step 12: install the control panel (M427/M426) .... 1053
Step 12: Install the integrated scanner assembly (M427/M246) . 1057
Step 13: Install the right cover .......... 1062
Step 14: Install the left cover . 1064
Step 15: Remove the cartridge door assembly ...... 1065
Step 16: Install Tray 2 . 1069
Removal and replacement: NFC PCA ........ 1070
Introduction ...... 1070
Step 1: Remove Tray 2 . 1071
Step 2: Remove the cartridge door assembly ........ 1072
Step 3: Remove the left cover 1074
Step 4: Remove the right cover ......... 1075
Step 5: Remove the integrated scanner assembly (M427/M246) 1076
Step 6: Remove the control panel (M427/M426) ... 1081
Step 7: Remove the top cover (M427/M426) .......... 1085
Step 8: Remove the NFC cover (M427/M426) ......... 1086
Step 9: Remove the top cover (M403/M402) .......... 1087
Step 10: Remove the NFC PCA 1088
ENWW xxiii
Step 11: Unpack the replacement assembly .......... 1089
Step 12: Install the NFC PCA ... 1090
Step 13: Install the top cover (M403/M402) 1091
Step 14: Install the NFC cover (M427/M426) .......... 1093
Step 15: Install the top cover (M427/M426) 1094
Step 16: Install the control panel (M427/M426) .... 1096
Step 17: Install the integrated scanner assembly (M427/M246) . 1100
Step 18: Install the right cover .......... 1105
Step 19: Install the left cover . 1107
Step 20: Remove the cartridge door assembly ...... 1108
Step 21: Install Tray 2 . 1112
Removal and replacement: Control-panel assembly (M403/M402) ... 1113
Introduction ...... 1113
Step 1: Remove Tray 2 . 1114
Step 2: Remove the cartridge door assembly ........ 1114
Step 3: Remove the left cover 1117
Step 4: Remove the right cover ......... 1118
Step 5: Remove the top cover (M403/M402) .......... 1119
Step 6: Remove the paper delivery tray (output bin) ........ 1121
Step 7: Remove the control-panel assembly (M403/M402) ........ 1122
Step 8: Unpack the replacement assembly . 1122
Step 9: Install the control-panel assembly (M403/M402) 1123
Step 10: Install the paper delivery tray (output bin) ......... 1124
Step 11: Install the top cover (M403/M402) 1124
Step 12: Install the right cover .......... 1126
Step 13: Install the left cover . 1128
Step 14: Install the cartridge door assembly ......... 1129
Step 15: Install Tray 2 . 1133
Removal and replacement: Control panel (M427/M426) and control panel sub
assemblies .... 1134
Introduction ...... 1134
Step 1: Remove the control panel mount cover (M427/M426) .... 1135
Step 2: Remove the control panel (M427/M426) ... 1137
Step 3: Remove the control panel mount base (M427/M426) ..... 1140
Step 4: Remove the control panel mount chassis assembly (M427/
M426) ..... 1141
Step 5: Remove Tray 2 . 1142
Step 6: Remove the cartridge door assembly ........ 1143
Step 7: Remove the left cover 1145
Step 8: Remove the control panel 22-pin FFC (M427/M426) ....... 1147
Step 9: Unpack the replacement assembly . 1149
xxiv ENWW
Step 10: Install the control panel 22-pin FFC (M427/M426) ........ 1150
Step 11: Install the left cover . 1152
Step 12: Install the cartridge door assembly ......... 1153
Step 13: Install Tray 2 . 1157
Step 14: Install the control panel mount chassis assembly (M427/
M426) ..... 1157
Step 15: Install the control panel mount base (M427/M426) ...... 1158
Step 16: Install the control panel (M427/M426) .... 1159
Step 17: Install the control panel mount cover (M427/M426) ..... 1163
Removal and replacement: Trays ......... 1165
Removal and replacement: Tray 2 . 1165
RM2-5392-000CN 250-sheet paper input tray ...... 1166
RM2-5452-000CN Tray 2 paper pickup roller assembly ... 1168
RM2-5397-000CN Tray 2 separation roller assembly ....... 1175
Removal and replacement: Accessories .......... 1180
550-sheet paper feeder ..... 1180
C5F97-69001 optional 550-sheet paper feeder .... 1181
RM2-5413-000CN optional Tray 3 .... 1186
RM2-5741-000CN optional Tray 3 paper pickup roller assembly 1190
RM2-5745-000CN optional Tray 3 separation roller assembly ... 1197
2 Parts and diagrams ......... 1203
备件列表和图示
For additional service and support ... 1204
Order parts, accessories, and supplies ........ 1205
Ordering .... 1205
Orderable parts .... 1205
Supplies ..... 1205
Accessories 1206
Customer self-repair parts ........ 1206
How to use the parts lists and diagrams ..... 1207
Document feeder and image scanner .......... 1208
Main assemblies ... 1208
Covers, printer base ..... 1210
Covers, M402 and M403 .. 1210
Covers, M426 and M427 .. 1212
Internal components, printer base ... 1214
Internal components, printer base (1 of 3) ..... 1214
Internal components, printer base (2 of 3) ..... 1216
Internal components, printer base (3 of 3) ..... 1218
550-sheet paper feeder ......... 1220
Covers, 550-sheet paper feeder 1220
ENWW xxv
Main body, 550-sheet paper feeder ..... 1222
Alphabetical parts list . 1224
Numerical parts list ..... 1231

打印机维修故障拍错手册
Table of contents
1 Theory of operation ... 1
打印机工作原理
Related documentation and software ..... 2
Basic operation ....... 3
Sequence of operation .......... 4
Engine-control system ...... 5
DC controller .... 6
Motor control ....... 8
Fan control .......... 8
Low-voltage power supply .... 9
Over-current/over-voltage protection ......... 10
Safety ......... 10
Low-voltage power supply functions .... 10
High-voltage power supply . 11
High-voltage power supply circuits ... 12
Fuser bias .......... 12
Fuser control . 12
Fuser circuits ..... 13
Fuser control functions 14
Fuser heater protection .......... 15
Engine laser/scanner system ..... 16
Laser/scanner failure detection ..... 17
Safety . 17
Image-formation process ... 18
Step 1: Primary charging ........ 21
Step 2: Laser-beam exposure . 22
Step 3: Development ... 22
Step 4: Transfer . 23
Step 5: Separation ........ 24
Step 6: Fusing .... 24
Step 7: Drum cleaning .. 24
Toner cartridges ....... 25
Design .... 25
ENWW vii
Memory chip ...... 27
Toner level and cartridge life detection ........ 27
Pickup, feed, and delivery system ......... 27
Sensors and switches .......... 29
Motors, clutches, and solenoids ..... 31
Jam detection/prevention ... 31
Paper feeder (optional Tray 3) .... 35
Basic operation ......... 35
Paper path ......... 35
Paper feeder controller 35
Motor control .... 36
Pickup and feed operation .. 36
Electrical components, pickup and feed ....... 36
Other functions . 37
Jam detection .... 38
2 Solve problems ........ 39
打印机工作诊断与排除
For additional service and support ....... 40
Solve problems checklist . 41
Solve problems checklist ..... 41
Print the menu map ..... 42
Print a configuration page ...... 42
Print the service page (includes the event log) ....... 43
Print the demo page .... 43
Troubleshooting process . 44
Determine the problem source ...... 44
Pre-troubleshooting checklist 44
Determine the problem source .......... 46
Power subsystem ..... 47
Power-on checks .......... 47
Control panel checks 47
Tools for troubleshooting 49
Component diagnostics ...... 49
LED diagnostics . 49
Network LEDs (network models only) .. 49
Control panel LEDs .......... 49
Engine diagnostics ....... 50
Engine test . 50
Diagrams ....... 51
Diagrams: Block diagrams ...... 51
Cross-sectional view of printer .. 51
viii ENWW
Cross-sectional view of 550–sheet paper feeder ....... 52
Diagrams: Printed circuit assembly (PCA) connector locations .... 53
Diagrams: DC controller connections .... 53
Paper feeder controller PCA ....... 54
Diagrams: External plug and port locations . 54
Diagrams: Locations of major components . 56
Major components (printer base) .......... 56
Motor and fan ....... 57
Rollers and pads (printer base) .. 58
PCAs (printer base) .......... 59
Diagrams: Timing chart .......... 60
Diagrams: Circuit diagrams ..... 61
Advanced configuration with HP Embedded Web Server (EWS) and HP Device Toolbox
(Windows 7) ... 62
Internal print-quality test pages .... 64
Clean the paper path .... 64
Clean the paper path (LCD control panel) ........ 64
Clean the paper path (touchscreen control panel) ..... 65
Print the configuration page ... 65
Print the configuration page from an LCD control panel ....... 65
Print the configuration page from a touchscreen control panel ...... 65
Print-quality troubleshooting tools .......... 66
Repetitive image defect ruler . 66
Use a ruler to measure between repetitive defects .... 66
Control panel menus 70
HP Web Services menu 70
Reports menu ... 70
Quick Forms menu ....... 71
USB Flash Drive menu .. 71
System Setup menu ..... 72
Service menu ..... 74
Network Setup menu ... 77
Control panel message document (CPMD) .......... 79
Control-panel message types 79
Control-panel messages and event log entries ...... 79
30.XX Error Messages ...... 79
49.XX.YY Error Messages 80
50.XX fuser errors 80
51.XX and 52 Laser/Scanner Errors ...... 81
55.XXXX Error Messages . 82
57.XX Error Messages ...... 83
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58.XX Error Messages ...... 83
59.XX Error Messages ...... 84
79 Errors .... 85
Alpha Error Messages ...... 85
Event-log messages . 96
Print the event log ....... 96
Print the event log (LCD control panel) . 96
Print the event log (touchscreen control panel) ......... 97
Show an event log ........ 97
Event-log messages .... 97
Clear paper jams . 101
Clear paper jams (M402, M403) ... 101
Introduction .... 101
Experiencing frequent or recurring paper jams? .. 101
Jam locations .. 102
Clear paper jams in Tray 1 .... 103
Clear paper jams in Tray 2 .... 104
Clear paper jams in optional Tray 3 . 108
Clear paper jams in the fuser 111
Clear paper jams in the output bin .. 115
Clear paper jams in the duplexer ..... 117
Clear paper jams (M426, M427) ... 119
Introduction .... 119
Experiencing frequent or recurring paper jams? .. 119
Jam locations .. 120
Clear paper jams in the document feeder .. 122
Clear paper jams in Tray 1 .... 125
Clear paper jams in Tray 2 .... 126
Clear paper jams in optional Tray 3 . 130
Clear paper jams in the fuser 134
Clear paper jams in the output bin .. 137
Clear paper jams in the duplexer ..... 140
Solve paper-handling problems .......... 142
The printer picks up multiple sheets of paper ... 142
The printer does not pick up paper ......... 142
Solve image quality problems .. 143
Print quality examples ...... 143
Clean the printer . 150
Clean the pickup and separation rollers . 150
Clean the paper path ......... 150
Clean the paper path (LCD control panel) ... 150
x ENWW
Clean the paper path (touchscreen control panel) 150
Clean the touchscreen ....... 150
Solve performance problems ... 152
Factors affecting print performance ....... 152
Print speeds .... 152
The product does not print or it prints slowly ... 153
The product does not print ... 153
The product prints slowly ..... 154
Solve connectivity problems .... 155
Solve direct-connect problems .... 155
Solve network problems ... 155
Poor physical connection ...... 155
The computer is using the incorrect IP address for the product . 155
The computer is unable to communicate with the product ........ 156
The product is using incorrect link and duplex settings for the network ......... 156
New software programs might be causing compatibility problems ..... 156
The computer or workstation might be set up incorrectly ......... 156
The product is disabled, or other network settings are incorrect ......... 156
Solve wireless network problems 157
Wireless connectivity checklist ........ 157
The control panel displays the message: The wireless feature on this product has
been turned off .......... 157
The product does not print after the wireless configuration completes .......... 158
The product does not print, and the computer has a third-party firewall installed ... 158
The wireless connection does not work after moving the wireless router or
product . 158
Cannot connect more computers to the wireless product .......... 158
The wireless product loses communication when connected to a VPN 159
The network does not appear in the wireless networks list ....... 159
The wireless network is not functioning .... 159
Service mode functions . 160
Service menu .......... 160
Service menu settings .......... 160
Restore the factory-set defaults ..... 160
Restore the factory-set defaults (LCD control panel) .......... 160
Restore the factory-set defaults (touchscreen control panel) ....... 161
Secondary service menu ... 161
Open the secondary service menu .. 161
Open the secondary service menu (LCD control panel) ....... 161
Open the secondary service menu (touchscreen control panel) .... 161
Secondary service menu structure .. 162
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Developer's menu ... 162
Open the Developer's menu (LCD control panel) .. 162
Open the Developer's menu (touchscreen control panel) .......... 163
Product resets ........ 164
NVRAM initialization .. 164
Solve fax problems (fax models only) . 165
Introduction . 165
Fax troubleshooting checklist ...... 165
Solve general fax problems ......... 166
Faxes are sending slowly ...... 166
Fax quality is poor ...... 167
Fax cuts off or prints on two pages . 168
Solve email problems (M426, M427 printes) . 169
Cannot connect to the email server ........ 169
Validate the SMTP gateway (Windows) .. 169
Validate the LDAP gateway (Windows) ... 169
Manually update the firmware . 170
Manually update the firmware (LCD control panel) ...... 170
Manually update the firmware (touchscreen control panel) ... 170
Appendix A Printer specifications .... 171
Printer dimensions M426 and M427 ... 172
Printer dimensions M402 and M403 ... 174
Printer space requirements ...... 176
Power consumption, electrical specifications, and acoustic emissions .... 176
Operating-environment range . 176
Certificate of Volatility ... 177

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