HP M551, M551N, M551XH User Manual

LASERJET ENTERPRISE 500 COLOR

Service Manual

M551n M551dn M551xh

HP LaserJet Enterprise 500 color M551 Printers

Service Manual

Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

The information contained herein is subject to change without notice.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Part number: CF079-90942

Edition 1, 10/2011

Trademark Credits

ENERGY STAR

and the ENERGY STAR

mark are registered U.S. marks.

Conventions used in this guide

TIP: Tips provide helpful hints or shortcuts.

NOTE: Notes provide important information to explain a concept or to complete a task.

CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging

the product.

WARNING! Warnings alert you to specific procedures that you should follow to avoid personal

injury, catastrophic loss of data, or extensive damage to the product.

ENWW iii

iv Conventions used in this guide ENWW

Table of contents

1 Theory of operation .......................................................................................................... 1

Basic operation ........................................................................................................................ 2

Sequence of operation ............................................................................................... 3

Engine control system ............................................................................................................... 4

DC controller ............................................................................................................ 5

Solenoids .................................................................................................. 6

Clutches .................................................................................................... 6

Switches ................................................................................................... 6

Sensors ..................................................................................................... 7

Motors and fans ......................................................................................... 7

High voltage power supply ...................................................................................... 10

Low voltage power supply ........................................................................................ 12

Overcurrent/overvoltage protection ............................................................ 14

Safety ..................................................................................................... 14

Sleep (powersave) mode ........................................................................... 14

Power supply voltage detection .................................................................. 14

Low voltage power supply failure ............................................................... 14

Power off condition .................................................................................. 15

Fuser control ........................................................................................................... 15

Fuser temperature control circuit ................................................................. 16

Fuser over temperature protection ............................................................... 17

Fuser failure detection ............................................................................... 18

Laser/scanner system ............................................................................................................. 19

Image formation system .......................................................................................................... 21

Image formation process .......................................................................................... 22

Step 1: Pre-exposure ................................................................................. 23

Step 2: Primary charging .......................................................................... 23

Step 3: Laser-beam exposure ..................................................................... 24

Step 4: Development ................................................................................ 24

Step 5: Primary transfer ............................................................................ 25

Step 6: Secondary transfer ........................................................................ 25

Step 7: Separation ................................................................................... 26

ENWW v

Step 8: Fusing ......................................................................................... 26

Step 9: ITB cleaning ................................................................................. 27

Step 10: Drum cleaning ............................................................................ 27

Print cartridge ......................................................................................................... 27

Developing roller engagement and disengagement ..................................................... 29

Intermediate transfer belt (ITB) unit ............................................................................. 31

Primary-transfer-roller engagement and disengagement ................................. 32

ITB cleaning ............................................................................................ 35

Calibration ............................................................................................................. 36

Color misregistration control ...................................................................... 36

Image stabilization control ........................................................................ 37

Pickup, feed, and delivery system ............................................................................................. 38

Pickup-and-feed unit ................................................................................................ 42

Cassette pickup ........................................................................................ 43

Cassette presence detection ........................................................ 44

Cassette lift operation ................................................................ 45

Cassette paper presence detection .............................................. 46

Cassette media width detection ................................................... 47

Multifeed prevention .................................................................. 48

Multipurpose tray pickup ........................................................................... 49

Paper feed .............................................................................................. 50

Skew-feed prevention ................................................................. 51

OHT detection .......................................................................... 52

Fusing and delivery unit ........................................................................................... 52

Loop control ............................................................................................ 53

Pressure-roller pressurization control ........................................................... 54

Duplexing unit (duplex models) ................................................................................. 55

Duplexing reverse and feed control ............................................................ 56

Duplex pickup operation ........................................................................... 56

Jam detection ........................................................................................................................ 57

Optional paper feeder ............................................................................................................ 59

Paper-feeder pickup and feed operation .................................................................... 61

Paper size detection and cassette presence detection .................................................. 62

Paper feeder cassette lift operation ............................................................................ 64

Paper feeder presence detection ............................................................................... 66

Paper-feeder multiple feed prevention ........................................................................ 67

Paper feeder jam detection ....................................................................................... 68

2 Removal and replacement .........................................

Introduction ........................................................................................................................... 70

Removal and replacement strategy ........................................................................................... 70

vi ENWW

..................................................... 69

Cautions during removal and replacement ................................................................. 70

Electrostatic discharge ............................................................................................. 71

Required tools ......................................................................................................... 72

Service approach ................................................................................................................... 73

Before performing service ........................................................................................ 73

After performing service ........................................................................................... 73

Post service test ....................................................................................................... 73

Print-quality test ........................................................................................ 73

Parts removal order ................................................................................................. 74

Customer self repair (CSR) components ..................................................................................... 76

Print cartridges ........................................................................................................ 76

Duplex reverse guide ............................................................................................... 78

Toner collection unit ................................................................................................ 79

Formatter PCA ........................................................................................................ 81

Disk drives ............................................................................................................. 82

Remove the HDD ...................................................................................... 82

Remove the SSM ...................................................................................... 84

Install a replacement hard drive ................................................................. 85

Reload the firmware .................................................................. 85

Tray cassette .......................................................................................................... 86

Fuser ..................................................................................................................... 87

Pickup roller (Tray 1) ............................................................................................... 88

Pickup roller (Tray 2) ............................................................................................... 89

Pickup and feed rollers (Tray 3) ................................................................................ 91

Separation roller (Tray 2) ......................................................................................... 93

Secondary transfer roller .......................................................................................... 94

Reinstall the transfer roller ......................................................................... 95

Secondary transfer assembly .................................................................................... 96

Reinstall the secondary transfer assembly .................................................... 97

Intermediate transfer belt (ITB) ................................................................................... 98

Right door (optional paper feeder) .......................................................................... 100

Covers ................................................................................................................................ 102

Identification and location ...................................................................................... 102

Front door assembly .............................................................................................. 103

Right door assembly .........................................

Right rear cover .................................................................................................... 109

Left cover ............................................................................................................. 111

Remove the left cover .............................................................................. 111

Left bottom cover ................................................................................................... 113

Remove the left bottom cover ................................................................... 113

Left bottom handle ................................................................................................. 114

..................................................... 105

ENWW vii

Remove the left bottom handle ................................................................. 114

Hardware integration pocket (HIP) (dn and xh models only) ....................................... 115

Control panel assembly ......................................................................................... 116

Right front cover .................................................................................................... 118

Remove the right front cover .................................................................... 118

Reinstall the power button ........................................................ 121

Front top cover ..................................................................................................... 122

Remove the front top cover ...................................................................... 122

Rear cover and upper rear cover ............................................................................ 124

Remove the rear cover and upper rear cover ............................................. 124

Rear top cover ...................................................................................................... 127

Remove the rear top cover ....................................................................... 127

Right bottom handle .............................................................................................. 129

Remove the right bottom handle ............................................................... 129

Rear bottom handle ............................................................................................... 130

Remove the rear bottom handle ................................................................ 130

Internal assemblies ............................................................................................................... 131

Delivery fan, cartridge fan, and environmental sensor ................................................ 131

Remove the delivery fan, cartridge fan, and environmental sensor ................ 131

Toner collection sensor ........................................................................................... 136

Remove the toner collection sensor ........................................................... 136

Residual toner feed motor ....................................................................................... 138

Remove the residual toner feed motor ....................................................... 138

Reinstall the residual toner collection door .................................. 142

Registration density (RD) sensor assembly ................................................................. 143

Remove the RD sensor assembly ............................................................... 143

Power supply fan and fan duct ................................................................................ 147

Remove the power supply fan and fan duct ............................................... 147

Registration assembly ............................................................................................ 150

Remove the registration assembly ............................................................. 150

Lower pickup guide ............................................................................................... 155

Remove the lower pickup guide ............................................................... 155

Reinstall the lower pickup guide ............................................................... 157

Interconnect board (ICB) ........................................................................................ 158

Remove the ICB ...................................................................................... 158

DC controller PCA and tray .................................................................................... 160

Remove the DC controller PCA ................................................................. 160

Low voltage power supply ...................................................................................... 163

ve the low voltage power supply ...................................................... 163

Remo

High voltage power supply lower (HVPS-D) .............................................................. 167

Remove the high voltage power supply lower ............................................ 167

viii ENWW

Reinstall the high voltage power supply lower ............................. 169

Developing disengagement motor ........................................................................... 170

Remove the developing disengagement motor ........................................... 170

Pickup motor ........................................................................................................ 172

Remove the pickup motor ........................................................................ 172

Lifter drive assembly .............................................................................................. 173

Remove the lifter drive assembly ............................................................... 173

Automatic close assembly ....................................................................................... 175

Remove the automatic close assembly ....................................................... 175

Cassette pickup drive assembly ............................................................................... 176

Remove the cassette pickup drive assembly ............................................... 176

Reinstall the cassette pickup drive assembly ................................ 181

Cassette pickup assembly ....................................................................................... 183

Remove the cassette pickup assembly ....................................................... 184

Laser/scanner assembly (Y/M) ............................................................................... 186

Remove the laser/scanner assembly (Y/M) ................................................ 186

Laser/scanner assembly (C/Bk) .............................................................................. 193

Remove the laser/scanner assembly (C/Bk) ............................................... 194

Reinstall the protective glass cleaner (PGC) actuators ................... 198

High voltage power supply upper (HVPS-T) .............................................................. 201

Remove the high voltage power supply upper ............................................ 202

Reinstall the high voltage power supply upper ............................ 205

Drum motor 1 ....................................................................................................... 206

Remove the drum motor 1 ....................................................................... 207

Drum motor 2 or drum motor 3 ............................................................................... 208

Remove the drum motor 2 or drum motor 3 ............................................... 209

Fuser motor .......................................................................................................... 210

Remove the fuser motor ........................................................................... 211

Main drive assembly ............................................................................................. 212

Remove the main drive assembly .............................................................. 213

Reinstall the main drive assembly .............................................. 217

Fuser drive assembly ............................................................................................. 223

Remove the fuser drive assembly .............................................................. 224

Reinstall the fuser drive assembly ............................................... 2

Delivery assembly ................................................................................................. 228

Remove the delivery assembly .................................................................. 229

Reinstall the delivery assembly .................................................. 232

Duplex drive assembly ........................................................................................... 233

Remove the duplex drive assembly ........................................................... 234

Optional paper feeder assembly (Tray 3) ................................................................................ 235

Drawer connector ................................................................................................. 235

ENWW ix

3 Solve problems ............................................................................................................. 237

Solve problems checklist ....................................................................................................... 238

Menu map .......................................................................................................................... 240

Current settings pages .......................................................................................................... 241

Preboot menu options ........................................................................................................... 242

Troubleshooting process ........................................................................................................ 243

Determine the problem source ................................................................................. 243

Troubleshooting flowchart ....................................................................... 243

Power subsystem ................................................................................................... 244

Power-on checks .................................................................................... 244

Power-on troubleshooting overview ............................................ 244

Tools for troubleshooting ....................................................................................................... 246

Individual component diagnostics ............................................................................ 246

LED diagnostics ...................................................................................... 246

Understand lights on the formatter ............................................. 246

Engine diagnostics ................................................................................. 254

Defeating interlocks ................................................................. 254

Disable cartridge check ........................................................... 256

Engine test button .................................................................... 257

Paper path test ....................................................................................... 258

Paper path sensors test ........................................................................... 258

Manual sensor test ................................................................................. 260

Registration sensor .................................................................. 261

Fuser loop sensors ................................................................... 262

Fuser output sensor .................................................................. 263

Duplexer refeed sensor ............................................................ 264

Output-bin full sensor ............................................................... 265

Fuser pressure-release sensor .................................................... 266

ITB alienation sensor ................................................................ 267

Right- and front-door interlock switches ....................................... 269

Tray/bin manual sensor test ..................................................... 271

Print/stop test ........................................................................................ 279

Component tests ..................................................................................... 280

Compo

Diagrams ............................................................................................................. 282

Block diagrams ...................................................................................... 282

Location of connectors ............................................................................ 284

DC controller PCA ................................................................... 284

Paper feeder driver PCA .......................................................... 285

Plug/jack locations ................................................................................. 286

Locations of major components ................................................................ 286

nent test (special-mode test) ............................................ 280

x ENWW

Base product .......................................................................... 286

1 x 500 paper feeder .............................................................. 293

General timing chart ............................................................................... 294

Circuit diagrams .................................................................................... 295

Internal print-quality test pages ................................................................................ 297

Print quality troubleshooting pages ........................................................... 297

Print quality assessment page .................................................................. 300

Cleaning page ....................................................................................... 302

Set up an auto cleaning page ................................................... 302

Configuration page ................................................................................ 303

Configuration page ................................................................. 303

HP embedded Jetdirect page .................................................... 305

Finding important information on the configuration pages ............ 306

Color band test ...................................................................................... 307

Print quality troubleshooting tools ............................................................................ 308

Repetitive defects ruler ............................................................................ 308

Calibrate the product .............................................................................. 309

Control panel menus .............................................................................................. 310

Retrieve Job From USB menu ................................................................... 311

Retrieve Job From Device Memory menu ................................................... 312

Supplies menu ....................................................................................... 316

Trays menu ............................................................................................ 324

Administration menu ............................................................................... 329

Reports menu .......................................................................... 329

General Settings menu ............................................................. 331

Retrieve From USB Settings menu .............................................. 349

General Print Settings menu ...................................................... 349

Default Print Options menu ....................................................... 352

Display Settings menu .............................................................. 355

Manage Supplies menu ........................................................... 356

Manage Trays menu ................................................................ 363

Network Settings menu ............................................................ 365

Troubleshooting menu ............................................................................. 382

Device Maintenance menu ...................................................................... 38

Backup/Restore menu .............................................................. 388

Calibrate/Cleaning menu ........................................................ 388

USB Firmware Upgrade menu ................................................... 391

Interpret control panel messages, status-alert messages, and event code errors ............. 392

10.0X.Y0 Supply memory error ............................................................... 392

10.22.50 .............................................................................................. 393

ENWW xi

10.22.51 .............................................................................................. 393

10.22.52 .............................................................................................. 393

10.23.50 .............................................................................................. 393

10.23.51 .............................................................................................. 394

10.23.52 .............................................................................................. 394

10.23.60 .............................................................................................. 394

10.23.70 Printing past very low .............................................................. 394

10.XX.34 Used supply in use ................................................................... 395

10.XX.40 Genuine HP supplies installed ................................................... 395

10.XX.41 Unsupported supply in use ........................................................ 396

10.XX.70 Printing past very low ............................................................... 396

10.YY.15 Install <supply> ....................................................................... 397

10.YY.25 Wrong cartridge in <color> slot ................................................ 397

10.YY.35 Incompatible <supply> ............................................................. 398

11.00.YY Internal clock error .................................................................. 399

13.00.00 .............................................................................................. 399

13.A3.D3 ............................................................................................. 399

13.A3.FF .............................................................................................. 399

13.B2.9C ............................................................................................. 399

13.B2.A1 ............................................................................................. 400

13.B2.A2 ............................................................................................. 400

13.B2.A3 ............................................................................................. 400

13.B2.D1 .............................................................................................. 400

13.B2.D2 .............................................................................................. 400

13.B2.D3 .............................................................................................. 400

13.D3.DZ ............................................................................................. 401

13.WX.EE ............................................................................................. 401

13.WX.FF ............................................................................................. 401

13.WX.YZ Fuser area jam ...................................................................... 402

13.WX.YZ Fuser wrap jam ...................................................................... 403

13.WX.YZ Jam below control panel ......................................................... 404

13.WX.YZ Jam in middle right door ......................................................... 404

13.WX.YZ Jam in right door .................................................................... 405

13.WX.YZ Jam in Tray 1 ........................................................................ 4

13.WX.YZ Jam in Tray <X> ..................................................................... 406

20.00.00 Insufficient memory To continue, press OK .................................. 406

21.00.00 Page too complex ................................................................... 406

32.08.XX .............................................................................................. 407

32.1C.XX .............................................................................................. 407

32.21.00 .............................................................................................. 411

33.XX.YY .............................................................................................. 412

xii ENWW

33.XX.YY Used board/disk ..................................................................... 412

41.02.00 Error ...................................................................................... 412

41.03.YZ Unexpected size in tray <X> ..................................................... 413

41.05.YZ Unexpected type in tray <X> .................................................... 413

41.07.YZ Error To continue, press OK ...................................................... 415

42.XX.YY .............................................................................................. 417

47.00.XX .............................................................................................. 417

47.01.XX .............................................................................................. 417

47.02.XX .............................................................................................. 417

47.03.XX .............................................................................................. 418

47.04.XX .............................................................................................. 418

47.05.00 .............................................................................................. 418

47.06.XX .............................................................................................. 418

47.WX.YZ Printer calibration error To continue, press OK ........................... 418

49.XX.YY To continue, turn off then on ...................................................... 420

50.WX.YZ Fuser error To continue, turn off then on .................................... 421

51.00.YY Error ...................................................................................... 424

52.00.XX To continue, turn off then on ...................................................... 424

54.XX.YY Error ...................................................................................... 425

55.00.YY DC controller error To continue, turn off then on .......................... 427

55.0X.YY DC controller error To continue, turn off then on .......................... 427

56.00.YY Error To continue, turn off then on .............................................. 427

57.00.0Y Error To continue, turn off then on ............................................. 428

58.00.04 .............................................................................................. 428

59.00.YY Error To continue, turn off then on .............................................. 429

59.05.XX .............................................................................................. 429

60.00.0Y Tray <Y> lifting error ............................................................... 430

61.00.01 .............................................................................................. 431

62.00.00 No system To continue, turn off then on ...................................... 431

70.00.00 Error To continue, turn off then on ............................................. 431

81.0X.YY Embedded JetDirect error ......................................................... 432

98.00.01 Corrupt data in firmware volume ............................................... 432

98.00.02 Corrupt data in solutions volume ............................................... 433

98.00.03 Corrupt data in configuration volume ......................................... 433

98.00.04 Corrupt data in job data volume ............................................... 433

99.00.01 Upgrade not performed file is corrupt ........................................ 433

99.00.02 Upgrade not performed timeout during receive ........................... 434

99.00.03 Upgrade not performed error writing to disk ............................... 434

99.00.04 Upgrade not performed timeout during receive ........................... 434

99.00.05 Upgrade not performed timeout during receive ........................... 434

99.00.06 Upgrade not performed error reading upgrade ........................... 435

ENWW xiii

99.00.07 Upgrade not performed error reading upgrade ........................... 435

99.00.08 Upgrade not performed error reading upgrade ........................... 435

99.00.09 Upgrade canceled by user ....................................................... 435

99.00.10 Upgrade canceled by user ....................................................... 436

99.00.11 Upgrade canceled by user ....................................................... 436

99.00.12 Upgrade not performed the file is invalid ................................... 436

99.00.13 Upgrade not performed the file is invalid ................................... 436

99.00.14 Upgrade not performed the file is invalid ................................... 437

99.00.2X .............................................................................................. 437

99.09.60 Unsupported disk .................................................................... 438

99.09.61 Unsupported disk .................................................................... 438

99.09.62 Unknown disk ......................................................................... 438

99.09.63 Incorrect disk .......................................................................... 438

99.09.64 Disk malfunction ...................................................................... 438

99.09.65 Disk data error ........................................................................ 439

99.09.66 No disk data installed .............................................................. 439

99.09.67 Disk is not bootable please download firmware .......................... 439

99.XX.YY .............................................................................................. 439

99.XX.YY .............................................................................................. 440

<Binname> Full Remove all paper from bin ............................................... 440

<Supply> almost full ............................................................................... 440

<Supply> low OR Supplies low ................................................................ 440

<Supply> very low OR Supplies very low .................................................. 441

<Tray X> lifting ...................................................................................... 442

[File System] device failure To clear, press OK ........................................... 442

[File System] file operation failed To clear, press OK .................................. 442

[File System] file system is full To clear, press OK ....................................... 442

[File System] is not initialized ................................................................... 443

[File System] is write protected ................................................................. 443

Accept bad signature ............................................................................. 443

Bad optional tray connection ................................................................... 443

Calibration reset pending ........................................................................ 444

Canceling ............................................................................................. 444

Canceling... <jobname> ......................................................................... 444

Checking engine .................................................................................... 444

Checking paper path .............................................................................. 444

osen personality not available To continue, press OK ............................. 445

Cleaning do not grab paper .................................................................... 445

Cleaning... ............................................................................................ 445

Clearing event log .................................................................................. 445

Clearing paper path ............................................................................... 445

xiv ENWW

Close front door ..................................................................................... 446

Close lower right door ............................................................................ 446

Close upper right door ............................................................................ 446

Creating cleaning page .......................................................................... 446

Data received To print last page, press OK ............................................... 447

EIO <X> disk initializing ......................................................................... 447

Event log is empty .................................................................................. 447

Expected drive missing ........................................................................... 447

HP Secure Hard Drive disabled ................................................................ 447

Incompatible <supply> ............................................................................ 448

Incompatible supplies ............................................................................. 448

Install <supply> ...................................................................................... 449

Install <supply> Close rear door .............................................................. 449

Install Fuser Unit ..................................................................................... 449

Install supplies ....................................................................................... 450

Install Transfer Unit ................................................................................. 450

Internal disk not functional ....................................................................... 450

Internal disk spinning up ......................................................................... 451

Load Tray <X>: [Type], [Size] .................................................................. 451

Load Tray <X>: [Type], [Size] To use another tray, press OK ....................... 451

Manually feed output stack Then press OK to print second sides .................. 452

Manually feed: [Type], [Size] ................................................................... 452

Manually feed: [Type], [Size] To use another tray, press OK ....................... 452

Moving solenoid .................................................................................... 452

Moving solenoid and motor ..................................................................... 453

No job to cancel .................................................................................... 453

Paused .................................................................................................. 453

Performing Color Band Test... .................................................................. 453

Performing Paper Path Test... ................................................................... 453

Please wait... ......................................................................................... 454

Printing CMYK samples... ........................................................................ 454

Printing Color Usage Log... ..................................................................... 454

Printing Configuration... .......................................................................... 454

Printing Demo Page... ............................................................................. 454

Printing Diagnostics Page... ..................................................................... 454

Printing Engine Test... ............................................................................. 455

Printing Event Log... ................................................................................ 455

Printing File Directory... ........................................................................... 455

Printing Font List... .................................................................................. 455

inting Fuser Test Page... ....................................................................... 455

Printing Help Page... .............................................................................. 456

ENWW xv

Printing Menu Map... ............................................................................. 456

Printing PQ Troubleshooting... ................................................................. 456

Printing Registration Page... ..................................................................... 456

Printing RGB Samples... .......................................................................... 456

Printing stopped ..................................................................................... 456

Printing Supplies Status Page... ................................................................ 457

Printing Usage Page... ............................................................................ 457

Processing duplex job Do not grab paper until job completes ...................... 457

Processing job from tray <X>... Do not grab paper until job completes ......... 457

Processing... .......................................................................................... 457

Processing... copy <X> of <Y> ................................................................ 458

Ready ................................................................................................... 458

Ready <IP Address> ............................................................................... 458

Remove all print cartridges ...................................................................... 458

Remove at least one print cartridge .......................................................... 458

Remove shipping lock from Tray 2 ............................................................ 459

Replace <supply> .................................................................................. 459

Replace Supplies .................................................................................... 460

Restore Factory Settings .......................................................................... 461

Restricted from printing in color ................................................................ 461

Rotating <color> motor ........................................................................... 461

Rotating motor ....................................................................................... 461

Size mismatch in Tray <X> ...................................................................... 462

Sleep mode on ...................................................................................... 462

Supplies in wrong positions ..................................................................... 462

Tray <X> empty: [Type], [Size] ................................................................ 463

Tray <X> open ....................................................................................... 463

Tray <X> overfilled ................................................................................. 464

Troubleshooting ..................................................................................... 464

Type mismatch Tray <X> ......................................................................... 464

Unsupported drive installed To continue, press OK ..................................... 464

Unsupported supply in use OR Unsupported supply installed To continue,

press OK ............................................................................................... 465

Unsupported tray configuration ................................................................ 465

Unsupported USB accessory detected Remove USB accessory ...................... 465

USB accessory needs too much power Remove USB and turn off then on ...... 466

USB accessory not functional ................................................................... 4

Used supply installed To continue, press OK OR Used supply in use ............. 466

Wrong cartridge in <color> slot ............................................................... 467

Event log messages ............................................................................................... 468

Print an event log ................................................................................... 469

xvi ENWW

View an event log .................................................................................. 470

Clear an event log .................................................................................. 470

Clear jams .......................................................................................................................... 471

Common causes of jams ........................................................................................ 471

Jam locations ........................................................................................................ 472

Clear jams in Tray 1 .............................................................................................. 473

Clear jams in the output bin area ............................................................................ 475

Clear jams in Tray 2 .............................................................................................. 476

Clear jams in the right door .................................................................................... 477

Clear jams in the optional 500-sheet paper and heavy media tray (Tray 3) .................. 481

Clear jams in the lower right door (Tray 3) ............................................................... 482

Jam causes and solutions ....................................................................................... 483

Jams in the output bin ............................................................................. 483

Jams in the fuser and transfer area ........................................................... 483

Jams in the duplex area (duplex models) ................................................... 487

Jams in Tray 1, Tray 2 and internal paper path .......................................... 488

Jams in Tray 3 ....................................................................................... 490

Change jam recovery ............................................................................................ 491

Solve paper handling problems ............................................................................................. 492

Product feeds multiple sheets .................................................................................. 492

Paper does not feed automatically ........................................................................... 492

Use manual print modes ....................................................................................................... 494

Solve image quality problems ................................................................................................ 497

Image defects table ............................................................................................... 497

Clean the product ................................................................................................................ 503

Clean the paper path ............................................................................................ 503

Set up an auto cleaning page .................................................................. 503

Solve performance problems ................................................................................................. 504

Solve connectivity problems ................................................................................................... 505

lve direct connect problems ................................................................................ 505

Solve network problems ......................................................................................... 505

Service mode functions ......................................................................................................... 507

Service menu ........................................................................................................ 507

Product resets ....................................................................................................... 509

Restore factory-set defaults ....................................................................... 509

Product cold reset ................................................................................... 510

Clean Disk and Partial Clean functions .................................................................... 510

Active and repository firmware locations ................................................... 510

Partial Clean ......................................................................................... 511

Execute a Partial Clean ............................................................ 511

Clean Disk ............................................................................................ 512

ENWW xvii

Execute a Clean Disk ............................................................... 512

Preboot menu options ........................................................................................................... 514

Product updates ................................................................................................................... 521

Determine the installed revision of firmware .............................................................. 521

Perform a firmware upgrade ................................................................................... 521

Embedded Web Server ........................................................................... 521

USB storage device (Preboot menu) .......................................................... 522

USB storage device (control-panel menu) ................................................... 523

4 Parts and diagrams ...................................................................................................... 525

Order parts, accessories, and supplies ................................................................................... 526

Part numbers ....................................................................................................................... 527

Accessories .......................................................................................................... 527

Print cartridges and toner collection unit ................................................................... 527

Memory ............................................................................................................... 527

Customer self repair (CSR) and service kits ............................................................... 528

Screws ................................................................................................................................ 530

How to use the parts lists and diagrams .................................................................................. 530

Covers ................................................................................................................................ 532

............................................................................................................................ 532

Right-door assembly ............................................................................................................. 534

Internal assemblies ............................................................................................................... 536

Internal assemblies (1 of 5) ..................................................................................... 536

Internal assemblies (2 of 5) ..................................................................................... 538

Internal assemblies (3 of 5) ..................................................................................... 540

Internal assemblies (4 of 5) ..................................................................................... 542

Internal assemblies (5 of 5) ..................................................................................... 544

Cassette ............................................................................................................... 546

Paper pickup assembly .......................................................................................... 548

PCAs ................................................................................................................... 550

Assessories .......................................................................................................................... 552

1 x 500-sheet paper feeder .................................................................................... 552

Paper feeder covers ............................................................................................... 554

feeder main body ........................................................................................ 556

Paper

Paper feeder cassette ............................................................................................. 558

Paper feeder PCA ................................................................................................. 560

Alphabetical parts list ........................................................................................................... 562

Numerical parts list .............................................................................................................. 568

Appendix A Service and support ..................................................................................... 575

Hewlett-Packard limited warranty statement ............................................................................. 576

xviii ENWW

HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement .................. 578

Color LaserJet Fuser Kit, Toner Collection Unit, and Transfer Kit Limited Warranty Statement .......... 579

Data stored on the print cartridge ........................................................................................... 580

End User License Agreement .................................................................................................. 581

OpenSSL ............................................................................................................................. 584

Customer self-repair warranty service ..................................................................................... 585

Customer support ................................................................................................................. 586

Appendix B Product specifications ................................................................................... 587

Physical specifications .......................................................................................................... 588

Power consumption, electrical specifications, and acoustic emissions .......................................... 588

Environmental specifications .................................................................................................. 588

Appendix C Regulatory information ................................................................................. 589

FCC regulations ................................................................................................................... 590

Environmental product stewardship program ........................................................................... 591

Protecting the environment ...................................................................................... 591

Ozone production ................................................................................................. 591

Power consumption ............................................................................................... 591

Paper use ............................................................................................................. 591

Plastics ................................................................................................................. 591

HP LaserJet print supplies ....................................................................................... 591

Return and recycling instructions ............................................................................. 592

United States and Puerto Rico .................................................................. 592

Multiple returns (more than one cartridge) .................................. 592

Single returns .......................................................................... 592

Shipping ................................................................................ 592

Non-U.S. returns .................................................................................... 593

Paper .................................................................................................................. 593

Material restrictions ............................................................................................... 593

Disposal of waste equipment by users in private households in the European Union ...... 594

Chemical substances ............................................................................................. 594

Material Safety Data Sheet (MSDS) ......................................................................... 594

For more information ............................................................................................. 594

Declaration of conformity ...................................................................................................... 5

Certificate of volatility ........................................................................................................... 597

Types of memory ................................................................................................... 597

Volatile memory ..................................................................................... 597

Non-volatile memory .............................................................................. 597

Mass Storage memory ............................................................................ 597

Safety statements ................................................................................................................. 598

ENWW xix

Laser safety .......................................................................................................... 598

Canadian DOC regulations .................................................................................... 598

VCCI statement (Japan) .......................................................................................... 598

Power cord instructions .......................................................................................... 598

Power cord statement (Japan) ................................................................................. 598

EMC statement (Korea) .......................................................................................... 599

Laser statement for Finland ..................................................................................... 599

GS statement (Germany) ........................................................................................ 600

Substances Table (China) ....................................................................................... 600

Restriction on Hazardous Substances statement (Turkey) ............................................. 600

Restriction on Hazardous Substances statement (Ukraine) ........................................... 600

Index ............................................................................................................................... 601

xx ENWW

List of tables

Table 1-1 Sequence of operation ............................................................................................................ 3

Table 1-2 Solenoids .............................................................................................................................. 6

Table 1-3 Clutches ................................................................................................................................ 6

Table 1-4 Switches ................................................................................................................................ 6

Table 1-5 Sensors ................................................................................................................................. 7

Table 1-6 Motors .................................................................................................................................. 8

Table 1-7 Fans ..................................................................................................................................... 9

Table 1-8 High voltage power supply circuits ......................................................................................... 10

Table 1-9 Converted DC voltages ......................................................................................................... 13

Table 1-10 Fuser components ............................................................................................................... 15

Table 1-11 Image formation process ..................................................................................................... 22

Table 1-12 Primary-transfer-roller engagement states ............................................................................... 32

Table 1-13 Image-stabilization controls .................................................................................................. 37

Table 1-14 Switches and sensors for the pickup, feed, and delivery system (1 of 2) .................................... 38

Table 1-15 Switches and sensors for the pickup, feed, and delivery system (2 of 2) .................................... 39

Table 1-16 Motors and solenoids for the pickup, feed, and delivery system ............................................... 40

Table 1-17 Jams that the product detects ............................................................................................... 57

Table 1-18 Electr

Table 1-19 Paper size detection ........................................................................................................... 62

Table 3-1 Troubleshooting flowchart .................................................................................................... 243

Table 3-2 Heartbeat LED, product initialization ..................................................................................... 247

Table 3-3 Heartbeat LED, product operational ...................................................................................... 249

Table 3-4 Connectivity LED, product initialization .................................................................................. 251

Table 3-5 Connectivity LED, product operational ................................................................................... 253

Table 3-6 Paper-path sensors diagnostic tests ....................................................................................... 259

Table 3-7 Manual sensor diagnostic tests ............................................................................................. 260

Table 3-8 Manual sensor test 2 diagnostic tests .................................................................................... 271

Table 3-9 Component test details ........................................................................................................ 280

Table 3-10 Sensors ........................................................................................................................... 282

Table 3-11 DC controller connectors ................................................................................................... 284

Table 3-12 Paper feeder driver PCA connectors ................................................................................... 285

Table 3-13 PCAs, motors, fans, switches, solenoids, and clutches ........................................................... 291

ical components for the paper feeder ............................................................................ 60

ENWW xxi

Table 3-14 Important information on the configuration pages ................................................................. 306

Table 3-15 Sign In menu .................................................................................................................. 310

Table 3-16 Retrieve Job From USB menu ....................................................................................... 311

Table 3-17 Retrieve Job From Device Memory menu ................................................................... 312

Table 3-18 Supplies menu ............................................................................................................... 316

Table 3-19 Trays menu .................................................................................................................... 324

Table 3-20 Reports menu ................................................................................................................ 329

Table 3-21 General Settings menu ................................................................................................. 331

Table 3-22 Retrieve From USB Settings menu ............................................................................... 349

Table 3-23 General Print Settings menu .......................................................................................... 349

Table 3-24 Default Print Options menu .......................................................................................... 352

Table 3-25 Display Settings menu .................................................................................................. 355

Table 3-26 Manage Supplies menu ................................................................................................ 356

Table 3-27 Manage Trays menu ..................................................................................................... 363

Table 3-28 Network Settings menu ................................................................................................ 365

Table 3-29 Jetdirect Menu ............................................................................................................. 365

Table 3-30 Troubleshooting menu .................................................................................................. 382

Table 3-31 Backup/Restore menu .................................................................................................. 388

Table 3-32 Calibrate/Cleaning menu ............................................................................................. 388

Table 3-33 Causes an

Table 3-34 Causes and solutions for fuser delivery delay jams ............................................................... 483

Table 3-35 Causes and solutions for wrapping jams ............................................................................. 484

Table 3-36 Causes and solutions for fuser delivery stationary jams .......................................................... 484

Table 3-37 Causes and solutions for residual media jams ...................................................................... 484

Table 3-38 Causes and solutions for pickup delay jams 2 ...................................................................... 485

Table 3-39 Causes and solutions for pickup stationary jams ................................................................... 486

Table 3-40 Causes and solutions for duplexing reverse jams .................................................................. 487

Table 3-41 Causes and solutions for duplex repick jams ........................................................................ 487

Table 3-42 Causes and solutions for residual media jams ...................................................................... 488

Table 3-43 Causes and solutions for pickup delay jam 1: tray pickup ..................................................... 488

Table 3-44 Causes and solutions for pickup stationary jams ................................................................... 489

Table 3-45 Causes and solutions for pickup delay jam 1; MP tray pickup ................................................ 489

Table 3-46 Causes and solutions for pickup delay and pickup stationary jams ......................................... 490

Table 3-47 Print modes under the Adjust Paper Types sub menu ....................................................... 494

Table 3-48 MP modes under the Optimize submenu ........................................................................... 4

Table 3-49 Image defects table .......................................................................................................... 497

Table 3-50 Solve performance problems .............................................................................................. 504

Table 3-51 Preboot menu options (1 of 5) ............................................................................................ 514

Table 3-52 Preboot menu options (2 of 5) ............................................................................................ 516

Table 3-53 Preboot menu options (3 of 5) ............................................................................................ 517

Table 3-54 Preboot menu options (4 of 5) ............................................................................................ 518

d solutions for delivery delay jam ........................................................................ 483

xxii ENWW

Table 3-55 Preboot menu options (5 of 5) ............................................................................................ 519

Table 3-56 Preboot menu options (5 of 5) ............................................................................................ 520

Table 4-1 Common fasteners ............................................................................................................. 530

Table 4-2 External covers, panels, and doors ....................................................................................... 533

Table 4-3 Right-door assembly ............................................................................................................ 535

Table 4-4 Internal assemblies (1 of 5) .................................................................................................. 537

Table 4-5 Internal assemblies (2 of 5) .................................................................................................. 539

Table 4-6 Internal assemblies (3 of 5) .................................................................................................. 541

Table 4-7 Internal assemblies (4 of 5) .................................................................................................. 543

Table 4-8 Internal assemblies (5 of 5) .................................................................................................. 545

Table 4-9 Cassette ............................................................................................................................ 547

Table 4-10 Paper pickup assembly ..................................................................................................... 549

Table 4-11 PCAs .............................................................................................................................. 551

Table 4-12 1 x 500-sheet paper feeder ............................................................................................... 553

Table 4-13 Paper feeder covers .......................................................................................................... 555

Table 4-14 Paper feeder main body .................................................................................................... 557

Table 4-15 Cassette .......................................................................................................................... 559

Table 4-16 Paper feeder PCA ............................................................................................................ 561

Table 4-17 Alphabetical parts list ....................................................................................................... 562

Table 4-18 Numerical parts list ........................................................................................................... 56

Table B-1 Product dimensions ............................................................................................................. 588

Table B-2 Product dimensions, with all doors and trays fully opened ....................................................... 588

ENWW xxiii

xxiv ENWW

List of figures

Figure 1-1 Relationship between the main product systems ......................................................................... 2

Figure 1-2 Engine control system ............................................................................................................. 4

Figure 1-3 DC controller block diagram ................................................................................................... 5

Figure 1-4 High voltage power supply circuits ........................................................................................ 10

Figure 1-5 Low voltage power-supply circuit ........................................................................................... 12

Figure 1-6 Fuser components ................................................................................................................ 15

Figure 1-7 Fuser temperature control circuit ............................................................................................ 16

Figure 1-8 Laser/scanner system ........................................................................................................... 19

Figure 1-9 Image formation system ........................................................................................................ 21

Figure 1-10 Image formation process .................................................................................................... 22

Figure 1-11 Pre-exposure ..................................................................................................................... 23

Figure 1-12 Primary charging ............................................................................................................... 23

Figure 1-13 Laser-beam exposure ......................................................................................................... 24

Figure 1-14 Development ..................................................................................................................... 24

Figure 1-15 Primary transfer ................................................................................................................. 25

Figure 1-16 Secondary transfer ............................................................................................................ 25

Figure 1-17 Separation ....................................................................................................................... 26

Figure 1-18 Fusing .............................................................................................................................. 26

Figure 1-19 ITB cleaning ...................................................................................................................... 27

Figure 1-20 Drum cleaning .................................................................................................................. 27

Figure 1-21 Print-cartridge system ......................................

Figure 1-22 Developing-roller engagement and disengagement control ..................................................... 29

Figure 1-23 ITB unit ............................................................................................................................. 31

Figure 1-24 Three states of primary-transfer-roller engagement and disengagement ..................................... 33

Figure 1-25 ITB cleaning process .......................................................................................................... 35

Figure 1-26 Toner patterns for calibration .............................................................................................. 36

Figure 1-27 Switches and sensors for the pickup, feed, and delivery system (1 of 2) ................................... 38

Figure 1-28 Switches and sensors for the pickup, feed, and delivery system (2 of 2) ................................... 39

Figure 1-29 Motors and solenoids for the pickup, feed, and delivery system .............................................. 40

Figure 1-30 Three main units of the pickup, feed, and delivery system ....................................................... 41

Figure 1-31 Pick feed mechanism ......................................................................................................... 42

Figure 1-32 Cassette-pickup mechanism ................................................................................................ 43

................................................................... 28

ENWW xxv

Figure 1-33 Cassette presence sensor .................................................................................................... 44

Figure 1-34 Cassette lift mechanism ...................................................................................................... 45

Figure 1-35 Paper level detection mechanism ......................................................................................... 46

Figure 1-36 Cassette media width detection ........................................................................................... 47

Figure 1-37 Multifeed prevention .......................................................................................................... 48

Figure 1-38 Multipurpose tray pickup mechanism ................................................................................... 49

Figure 1-39 Paper-feed mechanism ....................................................................................................... 50

Figure 1-40 Skew-feed prevention ......................................................................................................... 51

Figure 1-41 Fuser and delivery unit ....................................................................................................... 52

Figure 1-42 Loop-control mechanism ..................................................................................................... 53

Figure 1-43 Pressure-roller pressurization control .................................................................................... 54

Figure 1-44 Duplexing unit ................................................................................................................... 55

Figure 1-45 Jam detection sensors ........................................................................................................ 57

Figure 1-46 Optional paper feeder ....................................................................................................... 59

Figure 1-47 Signals for the paper feeder ............................................................................................... 60

Figure 1-48 Paper-feeder pickup and feed operation ............................................................................... 61

Figure 1-49 Paper size detection .......................................................................................................... 62

Figure 1-50 Paper-feeder cassette lift ..................................................................................................... 64

Figure 1-51 Paper

Figure 1-52 Jam detection .................................................................................................................... 68

Figure 2-1 Phillips and pozidrive screwdriver comparison ........................................................................ 72

Figure 2-2 Parts removal order (1 of 2) .................................................................................................. 74

Figure 2-3 Parts removal order (2 of 2) .................................................................................................. 75

Figure 2-4 Remove the print cartridge (1 of 2) ........................................................................................ 76

Figure 2-5 Remove the print cartridge (2 of 2) ........................................................................................ 77

Figure 2-6 Remove the duplex reverse guide (1 of 2) ............................................................................... 78

Figure 2-7 Remove the duplex reverse guide (2 of 2) ............................................................................... 78

Figure 2-8 Remove the toner collection unit (1 of 4) ................................................................................. 79

Figure 2-9 Remove the toner collection unit (2 of 4) ................................................................................. 79

Figure 2-10 Remove the toner collection unit (3 of 4) ............................................................................... 80

Figure 2-11 Remove the toner collection unit (4 of 4) ............................................................................... 80

Figure 2-12 Remove the formatter ......................................................................................................... 81

Figure 2-13 Remove the HDD (1 of 2) ................................................................................................... 82

Figure 2-14 Remove the HDD (2 of 2) ................................................................................................... 83

Figure 2-15 Remove the SSM (1 of 2) .................................................................................................... 84

Figure 2-16 Remove the SSM (2 of 2) .................................................................................................... 84

Figure 2-17 Remove the tray cassette (1 of 2) ......................................................................................... 86

Figure 2-18 Remove the tray cassette (2 of 2) ......................................................................................... 86

Figure 2-19 Remove the fuser

Figure 2-20 Remove the fuser (2 of 2) ................................................................................................... 87

Figure 2-21 Remove the pickup roller (Tray 1; 1 of 2) ............................................................................. 88

-feeder multiple feed prevention .................................................................................. 67

(1 of 2) ................................................................................................... 87

xxvi ENWW

Figure 2-22 Remove the pickup roller (Tray 1; 2 of 2) ............................................................................. 88

Figure 2-23 Remove the pickup roller (Tray 2; 1 of 4) ............................................................................. 89

Figure 2-24 Remove the pickup roller (Tray 2; 2 of 4) ............................................................................. 89

Figure 2-25 Remove the pickup roller (Tray 2; 3 of 4) ............................................................................. 90

Figure 2-26 Remove the pickup roller (Tray 2; 4 of 4) ............................................................................. 90

Figure 2-27 Remove the Pickup and feed rollers (Tray 3; 1 of 2) ............................................................... 91

Figure 2-28 Remove the Pickup and feed rollers (Tray 3; 2 of 2) ............................................................... 92

Figure 2-29 Remove the separation roller (Tray 2) ................................................................................... 93

Figure 2-30 Remove the transfer roller (1 of 3) ....................................................................................... 94

Figure 2-31 Remove the transfer roller (2 of 3) ....................................................................................... 94

Figure 2-32 Remove the transfer roller (3 of 3) ....................................................................................... 95

Figure 2-33 Reinstall the transfer roller ................................................................................................... 95

Figure 2-34 Remove the secondary transfer assembly (1 of 3) .................................................................. 96

Figure 2-35 Remove the secondary transfer assembly (2 of 3) .................................................................. 96

Figure 2-36 Remove the secondary transfer assembly (3 of 3) .................................................................. 97

Figure 2-37 Reinstall the secondary transfer assembly ............................................................................. 97

Figure 2-38 Remove the intermediate transfer belt (1 of 3) ....................................................................... 98

Figure 2-39 Remove the intermediate transfer belt (2 of 3) ....................................................................... 98

Figure 2-40 Remove the intermediate transfer belt (3 of 3) ....................................................................... 99

Figure 2-41 Remove the right door; optional paper feeder (1 of 3) ......................................................... 100

Figure 2-42 Remove the right door; optional paper feeder (2 of 3)

Figure 2-43 Remove the right door; optional paper feeder (3 of 3) ......................................................... 101

Figure 2-44 External panels, covers, and doors; identification and location ............................................. 102

Figure 2-45 Remove the front door assembly (1 of 2) ............................................................................ 103

Figure 2-46 Remove the front door assembly (2 of 2) ............................................................................ 104

Figure 2-47 Remove the right door assembly (1 of 8) ............................................................................ 105

Figure 2-48 Remove the right door assembly (2 of 8) ............................................................................ 105

Figure 2-49 Remove the right door assembly (3 of 8) ............................................................................ 106

Figure 2-50 Remove the right door assembly (4 of 8) ............................................................................ 106

Figure 2-51 Remove the right door assembly (5 of 8) ............................................................................ 107

Figure 2-52 Remove the right door assembly (6 of 8) ............................................................................ 107

Figure 2-53 Remove the right door assembly (7 of 8) ............................................................................ 108

Figure 2-54 Remove the right door assembly (8 of 8) ............................................................................ 108

Figure 2-55 Remove the right rear cover (1 of 3) .................................................................................. 109

Figure 2-56 Remove the right rear cover (2 of 3) .................................................................................. 109

Figure 2-57 Remove the right rear cover (3 of 3) .................................................................................. 110

Figure 2-58 Remove the left cover (1 of 4) ........................................................................................... 111

Figure 2-59 Remove the left cover (2 of 4) ........................................................................................... 111

Figure 2-60 Remove the left cover (3 of 4) ........................................................................................... 112

Figure 2-61 Remove the l

Figure 2-62 Remove the left bottom cover ............................................................................................ 113

eft cover (4 of 4) ........................................................................................... 112

......................................................... 100

ENWW xxvii

Figure 2-63 Remove the left bottom handle .......................................................................................... 114

Figure 2-64 Remove the HIP (1 of 2) ................................................................................................... 115

Figure 2-65 Remove the HIP (2 of 2) ................................................................................................... 115

Figure 2-66 Remove the control panel assembly (1 of 4) ........................................................................ 116

Figure 2-67 Remove the control panel assembly (2 of 4) ........................................................................ 116

Figure 2-68 Remove the control panel assembly (3 of 4) ........................................................................ 117

Figure 2-69 Remove the control panel assembly (4 of 4) ........................................................................ 117

Figure 2-70 Remove the right front cover (1 of 5) .................................................................................. 118

Figure 2-71 Remove the right front cover (2 of 5) .................................................................................. 119

Figure 2-72 Remove the right front cover (3 of 5) .................................................................................. 119

Figure 2-73 Remove the right front cover (4 of 5) .................................................................................. 120

Figure 2-74 Remove the right front cover (5 of 5) .................................................................................. 120

Figure 2-75 Reinstall the power button ................................................................................................. 121

Figure 2-76 Remove the front top cover (1 of 2) .................................................................................... 122

Figure 2-77 Remove the front top cover (2 of 2) .................................................................................... 123

Figure 2-78 Remove the rear cover and upper rear cover (1 of 4) ........................................................... 124

Figure 2-79 Remove the rear cover and upper rear cover (2 of 4) ........................................................... 125

Figure 2-80 Remove the rear cover and upper rear cover (3 of 4) ........................................................... 125

Figure 2-81 Remove the rear cover and upper rear cover (4 of 4) ........................................................... 126

Figure 2-82 Remove the rear top cover (1 of 2) .................................................................................... 12

Figure 2-83 Remove the rear top cover (2 of 2) .................................................................................... 128

Figure 2-84 Remove the right bottom handle ........................................................................................ 129

Figure 2-85 Remove the rear bottom handle ......................................................................................... 130

Figure 2-86 Remove the delivery fan, cartridge fan, and environmental sensor (1 of 9) ............................. 131

Figure 2-87 Remove the delivery fan, cartridge fan, and environmental sensor (2 of 9) ............................. 132

Figure 2-88 Remove the delivery fan, cartridge fan, and environmental sensor (3 of 9) ............................. 132

Figure 2-89 Remove the delivery fan, cartridge fan, and environmental sensor (4 of 9) ............................. 133

Figure 2-90 Remove the delivery fan, cartridge fan, and environmental sensor (5 of 9) ............................. 133

Figure 2-91 Remove the delivery fan, cartridge fan, and environmental sensor (6 of 9) ............................. 134

Figure 2-92 Remove the delivery fan, cartridge fan, and environmental sensor (7 of 9) ............................. 134

Figure 2-93 Remove the delivery fan, cartridge fan, and environmental sensor (8 of 9) ............................. 135

Figure 2-94 Remove the delivery fan, cartridge fan, and environmental sensor (9 of 9) ............................. 135

Figure 2-95 Remove the toner collection sensor (1 of 4) ......................................................................... 136

Figure 2-96 Remove the toner collection sensor (2 of 4) ......................................................................... 136

Figure 2-97 Remove the toner collection sensor (3 of 4) ......................................................................... 137

Figure 2-98 Remove the toner collection sensor (4 of 4) ......................................................................... 137

Figure 2-99 Remove the residual toner feed motor (1 of 7) ..................................................................... 138

Figure 2-100 Remove the residual toner feed motor (2 of 7) ................................................................... 139

Figure 2-101 Remove the residual toner feed motor (3 of 7) ................................................................... 139

Figure 2-102 Remove the residual toner feed motor (4 of 7) ................................................................... 140

Figure 2-103 Remove the residual toner feed motor (5 of 7) ................................................................... 140

xxviii ENWW

+ 616 hidden pages