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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：2020-02-11 12:31 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 M403 M426 M427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

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

xvi ENWW

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

xviii ENWW

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

xx ENWW

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

ENWW ix

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

ENWW xi

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

惠普M402 M403 M426 M427打印机维修手册可以访问下淘宝链接联系咨询客服：

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