HP Laserjet Enterprise M806, M830 troubleshooting manual

Download

LASERJET ENTERPRISE M806 LASERJET ENTERPRISE FLOW MFP M830

Troubleshooting Manual

M830zM806x+M806dn

HP LaserJet Enterprise M806 and Flow MFP M830

Troubleshooting 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: CZ244-90967

Edition 1, 11/2013

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

Normal sequence of operation ............................................................................ 3

Formatter-control system ..................................................................................................................... 5

Formatter hardware ............................................................................................................. 5

Control panel ....................................................................................................................... 6

Engine-control system .......................................................................................................................... 7

DC controller ........................................................................................................................ 8

Motors ............................................................................................................... 11

Fans .................................................................................................................. 12

Fuser-control circuit ........................................................................................................... 13

Fuser heater protection ..................................................................................... 15

Low-voltage power supply ................................................................................................. 16

Over-current/over-voltage protection ................................................................ 18

High-voltage power supply ................................................................................................ 19

Laser/scanner system ........................................................................................................................ 21

Image-formation system ..................................................................................................................... 22

Image formation process ................................................................................................... 23

Toner cartridge .................................................................................................................. 24

Toner cartridge design ...................................................................................... 24

No-shake toner .................................................................................................. 25

Toner cartridge memory chip ............................................................................ 25

Toner seal ......................................................................................................... 25

Toner level detection ......................................................................................... 25

Scanning/image capture system ........................................................................................................ 26

Scanner ............................................................................................................................. 26

Document feeder system ................................................................................................... 27

Document feeder sensors ................................................................................. 28

Document feeder simplex operation ................................................................. 29

Document feeder duplex operation ................................................................... 30

Document feeder paper control and deskew .................................................... 32

ENWW v

Document feeder paper pick and separation .................................................... 33

Document feeder paper stopper & fins ............................................................. 34

Document feeder simplex selector .................................................................... 35

Document feeder white backing ........................................................................ 35

Document feeder duplex selector ..................................................................... 36

Document feeder hinge ..................................................................................... 37

Pickup, feed, and delivery system ...................................................................................................... 39

Photo sensors and switches .............................................................................................. 40

Motors and solenoids ......................................................................................................... 42

Pickup and feed system ..................................................................................................... 43

Media-size detection ......................................................................................... 43

Media-level detection ........................................................................................ 43

Multi-feed prevention ......................................................................................... 43

Transparency media detection .......................................................................... 44

Fuser-wrapping jam detection ........................................................................... 44

Tray 1 ................................................................................................................................. 44

Tray 1 driver PCA .............................................................................................. 44

Tray 1 power supply .......................................................................................... 44

Tray 1 sequence of operation ........................................................................... 45

Tray 1 pickup and feed ...................................................................................... 45

Tray 1 jam detection .......................................................................................... 45

Tray 2 and Tray 3 .............................................................................................................. 46

Tray 2 cassette pickup ...................................................................................... 46

Tray 2 cassette multiple-feed prevention .......................................................... 48

Tray 2 cassette media-size detection and Tray 2 cassette-presence

detection ............................................................................................................ 49

Tray 2 cassette lift-up operation ........................................................................ 50

Tray media-presence detection ......................................................................... 52

Jam detection .................................................................................................................... 53

3,500-sheet high-capacity input (HCI) feeder ..................................................................................... 57

HCI electrical components ................................................................................................. 59

HCI motor control ............................................................................................................... 61

HCI motor failure detection ............................................................................... 62

HCI pickup-and-feed operation .......................................................................................... 63

HCI lift-up operation .......................................................................................... 64

HCI cassette media-size detection and cassette-presence detection ............... 65

Additional HCI pickup and feed functions .......................................................................... 65

HCI jam detection .............................................................................................................. 66

Stapler/stacker and stapler/stacker with hole punch .......................................................................... 68

Stapler/stacker motors ....................................................................................................... 72

Motor failure detection ....................................................................................... 72

vi ENWW

Feed-and-delivery operation .............................................................................................. 74

Switchback assembly ........................................................................................ 77

Straight feed ..................................................................................... 77

Switchback feed to the pass-through assembly/hole-puncher

assembly (without hole punching operation) .................................... 78

Switchback feed to the hole-puncher assembly (with hole

punching operation) .......................................................................... 79

Hole puncher assembly ..................................................................................... 81

Side registration operation ................................................................ 82

Hole punching operation (2-hole/3-hole puncher assembly) ............ 83

Hole punching operation (2-hole/4-hole puncher assembly) ............ 85

Stapler/stacker assembly .................................................................................. 87

Swing height control ......................................................................... 90

Process output bin paper-stacking operation .................................................... 91

Offset operation ................................................................................................. 91

Stack trailing-edge assist operation .................................................................. 94

Stack delivery operation .................................................................................... 94

Staple operation ................................................................................................ 94

Shift the staple unit .......................................................................................... 100

Stack operation (stapler/stacker and booklet maker) ...................................... 102

Output bin operation ....................................................................... 102

Shutter operation ............................................................................ 105

Jam detection .................................................................................................................. 105

Stapler/stacker jam detection .......................................................................... 105

Switchback assembly jam detection ............................................................... 106

Hole puncher assembly jam detection ............................................................ 108

Stapler/stacker assembly jam detection .......................................................... 109

Booklet maker .................................................................................................................................. 111

Electrical circuitry for the booklet maker unit ................................................................... 113

Basic operation of the booklet maker .............................................................................. 113

Construction of the booklet-maker-unit control system .................................................... 117

Booklet maker motors ...................................................................................................... 118

Booklet maker paper feed and delivery ........................................................................... 119

Booklet maker jam detection ........................................................................................... 125

Booklet maker delivery modes ......................................................................................... 126

2 Solve problems ............................................................................................................................................. 127

Solve problems checklist .................................................................................................................. 128

Menu map ........................................................................................................................................ 130

Preboot menu options ...................................................................................................................... 131

Current settings pages ..................................................................................................................... 138

ENWW vii

Troubleshooting process .................................................................................................................. 139

Determine the problem source ........................................................................................ 139

Troubleshooting flowchart ............................................................................... 139

Power subsystem ............................................................................................................ 140

Power-on checks ............................................................................................. 140

Power-on troubleshooting overview ............................................... 140

Control-panel checks ....................................................................................................... 141

Control-panel diagnostic flowcharts ................................................................ 144

Touchscreen black, white, or dim (no image) ................................. 145

Touchscreen is slow to respond or requires multiple presses to

respond ........................................................................................... 146

Touchscreen has an unresponsive zone ........................................ 147

No control-panel sound .................................................................. 148

Home button is unresponsive ......................................................... 149

Hardware integration pocket (HIP) is not functioning (control

panel functional) ............................................................................. 150

Scanning subsystem ........................................................................................................ 150

Tools for troubleshooting .................................................................................................................. 151

Individual component diagnostics .................................................................................... 151

LED diagnostics .............................................................................................. 151

Understand lights on the formatter ................................................. 151

Engine diagnostics .......................................................................................... 156

Defeating interlocks ........................................................................ 156

Disable cartridge check .................................................................. 157

Engine test button ........................................................................... 158

Paper path test ................................................................................................ 158

Paper path sensors test .................................................................................. 159

Manual sensor and tray/bin manual sensor tests ............................................ 160

Manual sensor test ......................................................................... 160

Tray/bin manual sensor test ........................................................... 161

Print/stop test .................................................................................................. 163

Component tests ............................................................................................. 163

Control-panel tests ......................................................................... 163

Component test (special-mode test) ............................................... 164

Finishing accessory component test .............................................. 166

Scanner tests M830 ........................................................................................ 202

Scanner tests .................................................................................. 202

Diagrams ......................................................................................................................... 204

Block diagrams ................................................................................................ 205

Location of connectors .................................................................................... 215

DC controller PCA connectors ........................................................ 215

viii ENWW

High capacity input (HCI) feeder controller PCA connectors .......... 217

Finishing accessories (all) controller PCA connectors ................... 218

Plug/jack locations .......................................................................................... 220

Locations of major components ...................................................................... 222

Base product .................................................................................. 222

High capacity input (HCI) feeder .................................................... 227

Finishing accessories ..................................................................... 231

General timing chart ........................................................................................ 234

Circuit diagrams .............................................................................................. 235

Internal print-quality test pages ........................................................................................ 245

Print quality troubleshooting pages ................................................................. 245

Fuser test page ............................................................................................... 247

Cleaning page ................................................................................................. 248

Enable and configure auto cleaning ............................................... 248

Print configuration page .................................................................................. 249

Configuration page ......................................................................... 249

HP embedded Jetdirect page ......................................................... 251

Finding important information on the configuration pages .............. 253

Print quality troubleshooting tools .................................................................................... 254

Repetitive defects ruler ................................................................................... 254

Control-panel menus ....................................................................................................... 255

Administration menu ....................................................................................... 255

Reports menu ................................................................................. 255

General Settings menu ................................................................... 257

Copy Settings menu (M830 only) ................................................... 266

Scan/Digital Send Settings menu (M830 only) ............................... 273

Fax Settings menu (M830 only) ...................................................... 284

General Print Settings menu .......................................................... 297

Default Print Options menu ............................................................ 300

Display Settings menu .................................................................... 302

Manage Supplies menu .................................................................. 304

Manage Trays menu ....................................................................... 308

Network Settings menu .................................................................. 310

Troubleshooting menu .................................................................... 322

Device Maintenance menu .............................................................................. 325

Backup/Restore menu .................................................................... 325

Calibration/Cleaning menu (M830) ................................................. 325

Calibration/Cleaning menu (M806) ................................................. 328

USB Firmware Upgrade menu ....................................................... 329

Service menu .................................................................................. 329

Interpret control-panel messages and event log entries .................................................. 329

ENWW ix

10.XX.YZ Error Messages .............................................................................. 329

10.00.00 e-Label Memory Error ...................................................... 329

10.00.10 e-Label Missing Memory Error ........................................ 330

10.00.50 Cartridge seal roll up error ............................................... 330

10.23.50 .......................................................................................... 330

10.23.51 .......................................................................................... 331

10.23.52 .......................................................................................... 331

10.23.70 Printing Past Very Low .................................................... 331

10.32.00 Unauthorized supply ........................................................ 331

10.XX.33 Used Supply In Use ........................................................ 332

10.XX.34 Used Supply In Use ........................................................ 332

10.XX.40 Genuine HP Supplies Installed ....................................... 332

10.XX.41 Unsupported Supply in Use ............................................ 332

10.XX.70 Printing past very low ...................................................... 332

10.YY.15 Install <supply> ............................................................... 333

10.YY.35 Incompatible <supply> .................................................... 333

11.XX.YZ Error Messages .............................................................................. 333

11.00.01 or 11.00.02 Internal clock error ........................................ 333

13.XX.YZ Error Messages .............................................................................. 334

13.60.Az ......................................................................................... 334

13.60.Dz ......................................................................................... 334

13.60.FF ......................................................................................... 336

13.64.Az ......................................................................................... 336

13.64.Dz ......................................................................................... 337

13.67.Az ......................................................................................... 338

13.67.Dz ......................................................................................... 338

13.67.FF ......................................................................................... 339

13.68.Az ......................................................................................... 340

13.68.Dz ......................................................................................... 340

13.69.Az ......................................................................................... 341

13.69.Dz ......................................................................................... 342

13.84.Az ......................................................................................... 342

13.89.3z .......................................................................................... 343

13.90.Az ......................................................................................... 343

13.90.Dz ......................................................................................... 344

13.92.FF ......................................................................................... 345

13.94.Az ......................................................................................... 346

13.94.Dz ......................................................................................... 346

13.96.33 .......................................................................................... 347

13.97.33 .......................................................................................... 347

13.98.A3 ......................................................................................... 348

x ENWW

13.98.D3 ......................................................................................... 348

13.A1.D1 ......................................................................................... 348

13.A1.FF ......................................................................................... 349

13.A2.D2 ......................................................................................... 349

13.A2.FF ......................................................................................... 350

13.A3.D3 ......................................................................................... 351

13.A3.FF ......................................................................................... 351

13.A4.D4 ......................................................................................... 352

13.A4.FF ......................................................................................... 353

13.A5.D5 ......................................................................................... 353

13.A5.FF ......................................................................................... 354

13.A7.D4 ......................................................................................... 355

13.A7.D5 ......................................................................................... 356

13.A7.FF ......................................................................................... 356

13.A8.D2 ......................................................................................... 357

13.A8.D3 ......................................................................................... 358

13.A8.D4 or 13.A8.D4 .................................................................... 358

13.AA.EE ........................................................................................ 359

13.AB.EE ........................................................................................ 359

13.B2.Az ......................................................................................... 360

13.B2.Dz ......................................................................................... 361

13.B2.FF ......................................................................................... 362

13.B4.FF ......................................................................................... 363

13.B9.Az ......................................................................................... 363

13.B9.Bz ......................................................................................... 364

13.B9.Cz ......................................................................................... 365

13.B9.Dz ......................................................................................... 367

13.B9.FF ......................................................................................... 368

13.BA.EE ........................................................................................ 368

13.BB.EE ........................................................................................ 369

13.D1.Az ......................................................................................... 369

13.D1.Dz ......................................................................................... 370

13.D1.FF ......................................................................................... 372

13.D2.Az ......................................................................................... 372

13.D2.Dz ......................................................................................... 373

13.D2.FF ......................................................................................... 373

13.D4.Az ......................................................................................... 374

13.D4.Dz ......................................................................................... 374

13.E1.Dz ......................................................................................... 375

13.E1.FF ......................................................................................... 376

13.E6.Az ......................................................................................... 377

ENWW xi

13.E6.Dz ......................................................................................... 378

13.E6.FF ......................................................................................... 379

13.EA.EE ........................................................................................ 379

13.FF.FF ......................................................................................... 380

30.XX.YZ Error Messages .............................................................................. 380

30.01.01 .......................................................................................... 380

30.01.06 .......................................................................................... 380

30.01.08 .......................................................................................... 381

30.01.10 (event code) Scanner ADF fan error ............................... 381

30.01.14 .......................................................................................... 381

30.01.15 .......................................................................................... 382

30.01.18 .......................................................................................... 382

30.01.19 .......................................................................................... 382

30.01.23 Scanner calibration failure ............................................... 382

30.01.30 or 30.01.32 ...................................................................... 383

30.01.36 .......................................................................................... 383

30.01.41 .......................................................................................... 383

30.01.42 .......................................................................................... 383

30.01.43 .......................................................................................... 384

30.01.44 .......................................................................................... 384

30.01.45 .......................................................................................... 384

30.01.46 .......................................................................................... 385

30.01.47 .......................................................................................... 385

30.01.48 .......................................................................................... 385

30.01.49 .......................................................................................... 385

30.01.50 .......................................................................................... 386

30.03.14 .......................................................................................... 386

30.03.20 .......................................................................................... 386

30.03.22 .......................................................................................... 386

30.03.23 .......................................................................................... 387

30.03.30 .......................................................................................... 387

30.03.45 .......................................................................................... 387

31.01.02 Jam in document feeder .................................................. 387

31.01.03 Document feeder pick error ............................................. 388

31.XX.YZ Error Messages .............................................................................. 389

31.03.30 .......................................................................................... 389

31.03.31 .......................................................................................... 390

31.03.32 .......................................................................................... 390

31.08.A1 ......................................................................................... 390

31.08.A2 ......................................................................................... 390

31.08.A3 ......................................................................................... 391

xii ENWW

31.13.01 .......................................................................................... 391

31.13.02 .......................................................................................... 391

31.13.13 .......................................................................................... 392

31.13.14 .......................................................................................... 392

31.13.15 .......................................................................................... 393

32.08.XX Error Messages ............................................................................... 393

32.08.A1, 32.08.A2, 32.08.A3 ........................................................ 393

32.1C.XX ........................................................................................ 393

40.XX.YZ Error Messages .............................................................................. 399

40.00.01 USB I/O buffer overflow To continue, touch “OK” ............ 399

40.00.02 Embedded I/O buffer overflow To continue, touch “OK” .. 399

40.00.03 EIO <X> buffer overflow To continue, touch “OK” ........... 399

40.00.04 EIO <X> bad transmission To continue, touch “OK” ....... 399

40.00.05 Embedded I/O bad transmission To continue, touch

“OK” ................................................................................................ 399

40.08.0X USB storage accessory removed .................................... 400

40.0X.05 USB storage accessory removed .................................... 400

41.XX.YZ Error Messages .............................................................................. 400

41.01.YZ ......................................................................................... 400

41.02.00 .......................................................................................... 401

41.03.FZ Unknown Misprint Error ................................................... 402

41.03.YZ Unexpected size in envelope feeder To use another

tray, touch "Options " ...................................................................... 402

41.03.YZ Unexpected size in tray <X> ........................................... 403

41.04.00 Printer Error ..................................................................... 404

41.05.YZ Unexpected type in tray <X> ........................................... 404

41.XX.YZ Error To continue, touch “OK” ........................................ 405

42.XX.YY Error Messages .............................................................................. 406

42.XX.YY Error Event Log message .............................................. 406

44.XX.XX Error Messages .............................................................................. 406

44.01.XX Error Event log message (MFP Only) ............................. 406

44.03.XX Error Event log message (MFP Only) ............................. 406

44.10.XX Error Event log message (MFP Only) ............................. 406

44.34.XX Error Event log message (MFP Only) ............................. 407

44.92.XX Error Event log message (MFP Only) ............................. 407

47.XX.XX Error Messages .............................................................................. 407

47.00.XX ......................................................................................... 407

47.01.XX ......................................................................................... 407

47.02.XX ......................................................................................... 408

47.03.XX ......................................................................................... 408

47.04.XX ......................................................................................... 408

ENWW xiii

47.05.00 .......................................................................................... 408

47.06.XX ......................................................................................... 409

47.WX.YZ Printer Calibration Failed To continue, touch “OK” ....... 409

48.XX.YY Error Messages .............................................................................. 409

48.XX.YY ........................................................................................ 409

49.XX.YY Error Messages .............................................................................. 410

49.XX.YY Error To continue turn off then on .................................. 410

50.WX.YZ Error Messages ............................................................................. 411

50.WX.YZ Fuser error To continue turn off then on ....................... 411

51.XX.YZ, 52.XX.YZ Error Messages ............................................................. 415

51.00.10 Beam detect error ............................................................ 415

51.00.19 / 51.00.20 Laser Scanner Error - Laser malfunction ........ 416

52.00.00/52.00.20 Scanner Startup/Rotation error ......................... 416

54.XX.YZ Error Messages .............................................................................. 416

54.00.03 (EVENT LOG ONLY) ....................................................... 416

54.06.21 (EVENT LOG ONLY) ....................................................... 417

55.XX.YZ, 56.XX.YZ Error Messages ............................................................. 417

55.00.01, 55.00.03, 55.00.04 DC controller error ........................... 417

55.01.06, 55.02.06 DC controller error ........................................... 417

56.00.YY Error ................................................................................ 418

57.XX.YZ Error Messages .............................................................................. 418

57.00.01 Error To continue turn off then on .................................... 418

57.00.02 Error To continue turn off then on .................................... 418

57.00.03 Error To continue turn off then on .................................... 419

57.00.04 Error To continue turn off then on .................................... 419

57.00.04 Error To continue turn off then on .................................... 420

57.00.05 Error To continue turn off then on .................................... 420

57.00.06 Error To continue turn off then on .................................... 420

57.00.07 Error To continue turn off then on .................................... 421

57.00.08 Error To continue turn off then on .................................... 421

57.00.09 Error To continue turn off then on .................................... 421

57.00.10 Error To continue turn off then on .................................... 421

59.XX.YZ Error Messages .............................................................................. 422

59.00.30 or 59.00.40 ...................................................................... 422

59.05.50 or 59.05.60 ...................................................................... 422

60.00.0Y, 62.00.00 Error Messages ............................................................... 423

60.00.02 Tray 2 lifting error ............................................................ 423

60.00.03 Tray 3 lifting error ............................................................ 423

60.00.04 Tray 4 lifting error ............................................................ 424

60.00.05 Tray 5 lifting error ............................................................ 424

xiv ENWW

62.00.00 No system To continue turn off then on ........................... 425

65.X0.AZ Error Messages ............................................................................... 425

65.X0.AZ Output accessory Failure ................................................ 425

66.WX.YZ Error Messages ............................................................................. 426

66.00.20 .......................................................................................... 426

66.00.40 .......................................................................................... 426

66.00.50 .......................................................................................... 427

66.00.77 .......................................................................................... 427

66.00.79 .......................................................................................... 427

66.00.8Z ......................................................................................... 428

66.12.46 .......................................................................................... 428

66.40.YZ ......................................................................................... 429

66.50.00 .......................................................................................... 429

66.60.16 .......................................................................................... 430

66.60.25 .......................................................................................... 430

66.60.27 .......................................................................................... 431

66.60.28 .......................................................................................... 431

66.60.31 .......................................................................................... 431

66.60.32 .......................................................................................... 433

66.60.33 .......................................................................................... 434

66.60.34 .......................................................................................... 435

66.60.48 .......................................................................................... 435

66.60.50 .......................................................................................... 436

66.80.01 .......................................................................................... 436

66.80.02 .......................................................................................... 436

66.80.03 .......................................................................................... 437

66.80.21 .......................................................................................... 438

66.80.22 .......................................................................................... 438

66.80.23 .......................................................................................... 438

66.80.33 .......................................................................................... 438

66.80.35 .......................................................................................... 438

66.80.36 .......................................................................................... 439

66.80.38 .......................................................................................... 440

66.80.46 .......................................................................................... 440

66.80.51 .......................................................................................... 441

66.80.55 .......................................................................................... 441

66.80.56 .......................................................................................... 441

66.80.57 .......................................................................................... 442

66.80.58 .......................................................................................... 442

66.80.59 .......................................................................................... 442

66.80.60 .......................................................................................... 442

ENWW xv

66.80.61 .......................................................................................... 442

66.80.62 .......................................................................................... 442

66.80.63 .......................................................................................... 443

66.80.64 .......................................................................................... 443

66.80.65 .......................................................................................... 443

66.80.70 .......................................................................................... 443

66.80.71 .......................................................................................... 443

66.80.72 .......................................................................................... 443

66.80.73 .......................................................................................... 444

66.80.74 .......................................................................................... 444

66.80.75 .......................................................................................... 444

66.80.76 .......................................................................................... 444

66.90.10 .......................................................................................... 444

66.90.29 .......................................................................................... 445

66.90.30 .......................................................................................... 446

66.90.41 .......................................................................................... 447

66.90.42 .......................................................................................... 448

66.90.43 .......................................................................................... 449

66.90.44 .......................................................................................... 449

66.90.45 .......................................................................................... 450

66.90.49 .......................................................................................... 451

66.90.50 .......................................................................................... 452

69.11.YZ ......................................................................................... 452

70.XX.YY Error Messages .............................................................................. 453

70.00.00 Error To continue turn off then on .................................... 453

80.XX.YY, 82.XX.YY Error Messages ............................................................. 453

80.0X.YY Embedded Jetdirect Error .............................................. 453

82.73.46, 82.73.47 .......................................................................... 454

98.0X.0Y Error Messages ............................................................................... 454

98.00.01 or 98.01.00 Corrupt data in firmware volume .................. 454

98.00.02 Corrupt data in the solutions volume ............................... 454

98.00.03 Corrupt data in the configuration volume ......................... 455

98.00.04 Corrupt data in the job data volume ................................ 455

99.XX.YY Error Messages .............................................................................. 455

99.00.01 Upgrade not performed file is corrupt .............................. 455

99.00.02 Upgrade not performed timeout during receive ............... 455

99.00.03 Upgrade not performed error writing to disk .................... 456

99.00.04 Upgrade not performed timeout during receive ............... 456

99.00.05 Upgrade not performed timeout during receive ............... 456

99.00.06 Upgrade not performed error reading upgrade ................ 456

99.00.07 Upgrade not performed error reading upgrade ................ 457

xvi ENWW

99.00.08 Upgrade not performed error reading upgrade ................ 457

99.00.09 Upgrade canceled by user ............................................... 457

99.00.10 Upgrade canceled by user ............................................... 457

99.00.11 Upgrade canceled by user ............................................... 458

99.00.12 Upgrade not performed the file is invalid ......................... 458

99.00.13 Upgrade not performed the file is invalid ......................... 458

99.00.14 Upgrade not performed the file is invalid ......................... 458

99.00.2X ......................................................................................... 458

99.01.XX ......................................................................................... 459

99.02.01 .......................................................................................... 460

99.02.09 .......................................................................................... 460

99.09.60 Unsupported disk ............................................................. 460

99.09.61 Unsupported disk ............................................................. 460

99.09.62 Unknown disk .................................................................. 460

99.09.63 Incorrect disk ................................................................... 461

99.09.64 Disk malfunction .............................................................. 461

99.09.65 Disk data error ................................................................. 461

99.09.66 No disk installed .............................................................. 461

99.09.67 Disk is not bootable please download firmware .............. 461

99.09.67 Disk is not bootable please download firmware .............. 462

99.XX.YY ........................................................................................ 462

Alpha Error Messages ..................................................................................... 462

<binname> full Remove all paper from bin ..................................... 462

<Supply> low OR Supplies low ...................................................... 462

<Supply> very low OR Supplies very low ....................................... 463

<Tray X> lifting ............................................................................... 463

[File System] device failure To clear touch “OK” ............................ 464

[File System] file operation failure To clear touch “OK” .................. 464

[File System] file system is full To clear touch “OK” ....................... 464

[File System] is not initialized ......................................................... 464

[File System] is write protected ....................................................... 464

Accept bad signature ...................................................................... 464

ADF not detected ............................................................................ 465

Bad duplexer connection ................................................................ 465

Bad optional tray connection .......................................................... 465

Calibration reset pending ................................................................ 465

Canceling ........................................................................................ 465

Canceling...<jobname> ................................................................... 466

Cartridge Low ................................................................................. 466

Cartridge Memory Abnormal .......................................................... 466

Cartridge Out .................................................................................. 466

ENWW xvii

Checking engine ............................................................................. 466

Checking paper path ...................................................................... 467

Chosen personality not available To continue, touch “OK” ............ 467

Clearing event log ........................................................................... 467

Clearing paper path ........................................................................ 467

Close Front door ............................................................................. 467

Close Left door ............................................................................... 468

Close Lower Right door .................................................................. 468

Close stapler/stacker multi bin mailbox door .................................. 468

Close top cover ............................................................................... 469

Close Upper Right Door ................................................................. 469

Cooling device ................................................................................ 469

Data received To print last page press “OK” .................................. 469

Different paper sizes in job ............................................................. 470

EIO <X> disk initializing .................................................................. 470

EIO <X> disk not functional ............................................................ 470

EIO <X> disk spinning up ............................................................... 470

Event log is empty .......................................................................... 470

Expected drive missing ................................................................... 471

External device initializing .............................................................. 471

Fax is disabled — ignoring call ....................................................... 471

FIM Load Error Send full FIM on <X> port ..................................... 471

Flatbed cover open or Close Flatbed cover .................................... 471

Fuser Kit low ................................................................................... 472

Fuser Kit very low To continue, touch “OK” .................................... 472

Gateways failed .............................................................................. 472

Gateways OK ................................................................................. 472

Genuine HP cartridge installed ....................................................... 472

Genuine HP supply installed .......................................................... 473

HP Secure hard drive disabled ....................................................... 473

Incompatible <Supply> ................................................................... 473

Incompatible supplies ..................................................................... 473

Initializing... ..................................................................................... 473

Install fuser unit .............................................................................. 474

Install supply ................................................................................... 474

Internal disk device failure To clear touch “OK” .............................. 474

Internal disk file operation failed ..................................................... 474

Internal disk file system is full ......................................................... 475

Internal disk is write protected ........................................................ 475

Internal disk not found .................................................................... 475

Internal disk not functional .............................................................. 475

xviii ENWW

Internal disk not initialized .............................................................. 475

Internal disk spinning up ................................................................. 475

Jam in document feeder ................................................................. 476

Job not stapled due to mixed sizes ................................................ 476

Load Tray <X>: [Type], [Size] To use another tray, press “OK” ..... 476

Loading program <XX> .................................................................. 476

Lower left booklet bin full ................................................................ 477

Manually feed output stack Then touch "OK" to print second side . 477

Manually feed: <Type><Size> To use another tray, press “OK” .... 477

Moving solenoid .............................................................................. 477

Moving solenoid and motor ............................................................ 477

No job to cancel .............................................................................. 478

Non HP Supply Installed ................................................................. 478

Output Bin Full ................................................................................ 478

Output Device detached ................................................................. 478

Paused... ........................................................................................ 479

Performing Paper Path Test… ....................................................... 479

Please Wait... ................................................................................. 479

Printing Configuration... .................................................................. 479

Printing Event Log... ....................................................................... 479

Printing File Directory... .................................................................. 479

Printing Font List... .......................................................................... 480

Printing Fuser Test Page... ............................................................. 480

Printing Help Page... ....................................................................... 480

Printing Menu Map... ...................................................................... 480

Printing stopped .............................................................................. 480

Printing Supplies Status Page... ..................................................... 480

Printing Usage Page... .................................................................... 481

Printing…engine test ...................................................................... 481

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

completes ....................................................................................... 481

Processing... ................................................................................... 481

Processing...copy <X> of <Y> ........................................................ 481

RAM disk device failure To clear touch “OK” .................................. 481

RAM disk file operation failed To clear touch “OK” ......................... 482

RAM disk file system is full To clear touch “OK” ............................. 482

RAM disk is write protected To clear touch “OK” ............................ 482

RAM disk not initialized .................................................................. 482

Ready ............................................................................................. 482

Ready <IP Address> ...................................................................... 482

Receiving Upgrade ......................................................................... 483

ENWW xix

Reinsert duplexer ........................................................................... 483

Remove one toner cartridge ........................................................... 483

Remove USB accessory ................................................................. 483

Replace <Supply> .......................................................................... 483

Replace supplies ............................................................................ 484

Resend external accessory firmware ............................................. 484

Resend Upgrade ............................................................................ 485

Restore Factory Settings ................................................................ 485

ROM disk device failed To clear touch “OK” .................................. 485

ROM disk file operation failed To clear touch “OK” ........................ 485

ROM disk file system is full To clear touch “OK” ............................ 485

ROM disk is write protected To clear touch “OK” ........................... 485

ROM disk not initialized To clear touch “OK” .................................. 486

Rotating Motor ................................................................................ 486

Size mismatch in Tray <X> ............................................................. 486

Sleep mode on ............................................................................... 486

Staple Cartridge 2 and 3 very low (warning) .................................. 486

Staple Cartridge <X> low (warning) ................................................ 487

Staple Cartridge low ....................................................................... 487

Stapler/Stacker staple jam .............................................................. 487

Supplies low ................................................................................... 487

Supply Memory Warning ................................................................ 487

The unit has corrupt data ................................................................ 487

Too many pages in job to staple ..................................................... 488

Too many pages to make booklet .................................................. 488

Tray <X> [type] [size] ...................................................................... 488

Tray <X> empty: [Type], [Size] ....................................................... 488

Tray <X> lifting ............................................................................... 489

Tray <X> open ................................................................................ 489

Tray <X> overfilled ......................................................................... 490

Type mismatch Tray <X> ............................................................... 490

Unsupported drive installed To continue, touch “OK” ..................... 490

Unsupported supply in use OR Unsupported supply installed To

continue, touch “OK” ....................................................................... 491

Unsupported tray configuration ...................................................... 491

Unsupported USB accessory detected Remove USB accessory ... 491

Upgrade Error ................................................................................. 491

Upper left bin full ............................................................................. 491

USB accessory not functional ......................................................... 492

USB hubs are not fully supported Some operations may not work

properly ........................................................................................... 492

xx ENWW

USB is write protected To clear touch “OK” .................................... 492

USB needs too much power ........................................................... 492

USB needs too much power Remove USB and Then Turn Off

then On ........................................................................................... 492

USB not initialized .......................................................................... 493

USB storage accessory removed Clearing any associated data .... 493

USB storage device failure To clear touch “OK” ............................. 493

USB storage file operation failed To clear touch “OK” .................... 493

USB storage file system is full To clear touch “OK” ........................ 493

Used supply installed To continue, touch “OK” OR Used supply

in use Description ........................................................................... 494

Verifying, Please Wait .................................................................... 494

Waiting for Tray <X> to lift .............................................................. 494

Windows Login Required to Use this Feature ................................ 494

Event log messages ........................................................................................................ 494

Print or view an event log ................................................................................ 495

Clear an event log ........................................................................................... 495

Clear jams ........................................................................................................................................ 496

Auto-navigation for clearing jams .................................................................................... 496

Experiencing frequent or recurring paper jams? .............................................................. 496

Clear jams in the front door ............................................................................................. 497

Clear jams in Tray 1 ......................................................................................................... 500

Clear jams in the right door .............................................................................................. 503

Clear jams in Tray 2 and Tray 3 ...................................................................................... 506

Clear jams in Tray 4 and Tray 5 ...................................................................................... 507

Clear jams in the duplexer ............................................................................................... 511

Clear jams in the left door (fuser area) ............................................................................ 516

Clear jams in the output bin area (M806 only) ................................................................. 519

Clear jams in the stapler/stacker accessory .................................................................... 521

Clear jams in the stapler/stacker ..................................................................... 521

Clear connection jams ..................................................................................... 522

Clear Staple 1 jams ......................................................................................... 523

Clear jams in the stapler/stacker with hole punch accessory .......................................... 527

Clear top left door jams in the stapler/stacker with hole punch accessory ...... 527

Clear a connection jam in the stapler/stacker with hole punch accessory ...... 530

Clear Staple 1 jams ......................................................................................... 534

Clear jams in the booklet maker accessory ..................................................................... 538

Clear jams in the front left door of the booklet maker ..................................... 538

Clear connection jams ..................................................................................... 541

Clear Staple 1 jams ......................................................................................... 542

Clear staple jams in the booklet maker ........................................................... 544

ENWW xxi

Paper feeds incorrectly or becomes jammed ................................................................................... 549

The product does not pick up paper ................................................................................ 549

The product picks up multiple sheets of paper ................................................................ 549

The document feeder jams, skews, or picks up multiple sheets of paper (M830) ........... 549

Prevent paper jams .......................................................................................................... 550

Use manual print modes .................................................................................................................. 551

Solve image quality problems .......................................................................................................... 553

Image defects table ......................................................................................................... 553

Clean the product ............................................................................................................................. 558

Print a cleaning page ....................................................................................................... 558

Check the scanner glass for dirt or smudges (M830) ...................................................... 558

Clean the pickup rollers and separation pad in the document feeder (M830) ................. 560

Solve performance problems ........................................................................................................... 561

Solve connectivity problems ............................................................................................................. 562

Solve USB connection problems ..................................................................................... 562

Solve wired network problems ......................................................................................... 562

Poor physical connection ................................................................................ 562

The computer is using the incorrect IP address for the product ...................... 562

The computer is unable to communicate with the product .............................. 563

The product is using incorrect link and duplex settings for the network .......... 563

New software programs might be causing compatibility problems ................. 563

The computer or workstation might be set up incorrectly ................................ 563

The product is disabled, or other network settings are incorrect ..................... 563

Service mode functions .................................................................................................................... 564

Service menu ................................................................................................................... 564

Product resets .................................................................................................................. 567

Restore factory-set defaults ............................................................................ 567

Restore the service ID ..................................................................................... 568

Product cold reset ........................................................................................... 568

Format Disk and Partial Clean functions ......................................................................... 569

Active and repository firmware locations ......................................................... 569

Partial Clean .................................................................................................... 569

Execute a Partial Clean .................................................................. 570

Format Disk ..................................................................................................... 570

Execute a Format Disk ................................................................... 571

Solve fax problems ........................................................................................................................... 572

Checklist for solving fax problems ................................................................................... 572

What type of phone line are you using? .......................................................... 572

Are you using a surge-protection device? ....................................................... 572

Are you using a phone company voice-messaging service or an answering

machine? .....

.................................................................................................... 572

xxii ENWW

Does your phone line have a call-waiting feature? ......................................... 573

Check fax accessory status ............................................................................ 573

General fax problems ...................................................................................................... 574

The fax failed to send ...................................................................................... 574

An Out of Memory status message displays on the product control panel ..... 574

Print quality of a photo is poor or prints as a gray box .................................... 574

You touched the Stop button to cancel a fax, but the fax was still sent .......... 574

No fax address book button displays .............................................................. 574

Not able to locate the Fax settings in HP Web Jetadmin ................................ 574

The header is appended to the top of the page when the overlay option is

enabled ........................................................................................................... 574

A mix of names and numbers is in the recipients box ..................................... 574

A one-page fax prints as two pages ................................................................ 575

A document stops in the document feeder in the middle of faxing .................. 575

The volume for sounds coming from the fax accessory is too high or too

low ................................................................................................................... 575

Product upgrades ............................................................................................................................. 576

Determine the installed revision of firmware .................................................................... 576

Perform a firmware upgrade ............................................................................................ 576

HP Embedded Web Server ............................................................................. 576

USB flash drive (Preboot menu) ..................................................................... 577

USB flash drive (control-panel menu) ............................................................. 578

Appendix A Service and support ..................................................................................................................... 579

Hewlett-Packard limited warranty statement .................................................................................... 580

HP's Premium Protection Warranty: LaserJet toner cartridge limited warranty statement ............... 581

HP policy on non-HP supplies .......................................................................................................... 582

HP anticounterfeit Web site .............................................................................................................. 583

Data stored on the toner cartridge .................................................................................................... 584

End User License Agreement .......................................................................................................... 585

OpenSSL .......................................................................................................................................... 588

Customer self-repair warranty service .............................................................................................. 589

Customer support ............................................................................................................................. 590

Appendix B Product specifications .................................................................................................................. 591

Physical specifications ..................................................................................................................... 592

HP LaserJet Enterprise M806 .......................................................................................... 592

HP LaserJet Enterprise Flow M830 ................................................................................. 592

Finishing accessories ...................................................................................................... 593

Power consumption, electrical specifications, and acoustic emissions ............................................ 593

Environmental

specifications ............................................................................................................ 593

ENWW xxiii

Appendix C Regulatory information ................................................................................................................. 595

FCC regulations ............................................................................................................................... 596

Environmental product stewardship program ................................................................................... 597

Protecting the environment .............................................................................................. 597

Ozone production ............................................................................................................ 597

Power consumption ......................................................................................................... 597

Paper use ........................................................................................................................ 597

Plastics ............................................................................................................................ 597

HP LaserJet print supplies ............................................................................................... 597

Return and recycling instructions ..................................................................................... 598

United States and Puerto Rico ........................................................................ 598

Multiple returns (more than one cartridge) ..................................... 598

Single returns ................................................................................. 598

Shipping .......................................................................................... 598

Non-U.S. returns ............................................................................................. 599

Paper ............................................................................................................................... 599

Material restrictions .......................................................................................................... 599

Disposal of waste equipment by users ............................................................................ 600

Electronic hardware recycling .......................................................................................... 600

Chemical substances ....................................................................................................... 600

Material Safety Data Sheet (MSDS) ................................................................................ 600

EPEAT ............................................................................................................................. 600

For more information ....................................................................................................... 600

Declaration of conformity (M806) ..................................................................................................... 601

Declaration of conformity (M830) ..................................................................................................... 603

Certificate of Volatility (M806) .......................................................................................................... 605

Certificate of Volatility (M830) .......................................................................................................... 607

Safety statements ............................................................................................................................. 609

Laser safety ..................................................................................................................... 609

Canada - Industry Canada ICES-003 Compliance Statement ......................................... 609

VCCI statement (Japan) .................................................................................................. 609

Power cord instructions ................................................................................................... 609

Power cord statement (Japan) ......................................................................................... 609

EMC statement (China) ................................................................................................... 610

EMC statement (Korea) ................................................................................................... 610

EMI statement (Taiwan) ................................................................................................... 610

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

GS statement (Germany) ................................................................................................. 612

Substances Table (China) ............................................................................................... 612

SEPA Ecolabel User Information (China) ........................................................................ 612

Restriction on Hazardous Substances statement (Turkey) ............................................. 613

..................................................... 610

xxiv ENWW

Restriction on Hazardous Substances statement (Ukraine) ............................................ 613

Eurasian Conformity (Belarus, Kazakhstan, Russia) ....................................................... 613

Additional statements for telecom (fax) products ............................................................................. 614

EU Statement for Telecom Operation .............................................................................. 614

New Zealand Telecom Statements .................................................................................. 614

Additional FCC statement for telecom products (US) ...................................................... 614

Telephone Consumer Protection Act (US) ...................................................................... 615

Industry Canada CS-03 requirements ............................................................................. 615

Vietnam Telecom wired/wireless marking for ICTQC Type approved products .............. 616

Japan Telecom Mark ....................................................................................................... 616

Index ................................................................................................................................................................. 617

ENWW xxv

xxvi ENWW

List of tables

Table 1-1 Sequence of operation (product base) ............................................................................................... 3

Table 1-2 Formatter hardware components ....................................................................................................... 5

Table 1-3 Electrical components ........................................................................................................................ 8

Table 1-4 Motors .............................................................................................................................................. 11

Table 1-5 Fans ................................................................................................................................................. 12

Table 1-6 Fuser components ........................................................................................................................... 13

Table 1-7 Fuser control functions ..................................................................................................................... 15

Table 1-8 Low-voltage power supply functions ................................................................................................ 18

Table 1-9 High-voltage power supply circuits ................................................................................................... 20

Table 1-10 Image formation process ................................................................................................................ 23

Table 1-11 Toner cartridge components .......................................................................................................... 24

Table 1-12 Document feeder sensors .............................................................................................................. 28

Table 1-13 Photo sensors and switches .......................................................................................................... 40

Table 1-14 Motors and solenoids (paper path) ................................................................................................ 42

Table 1-15 Tray 1 jam detection ....................................................................................................................... 45

Table 1-16 Stapler/stacker delivery modes ...................................................................................................... 49

Table 1-17 Jam detection sensors ................................................................................................................... 53

Table 1-18 Jams detected by the DC controller ............................................................................................... 54

Table 1-19 Jam detection ................................................................................................................................. 55

Table 1-20 HCI electrical components ............................................................................................................. 58

Table 1-21 HCI electrical components ............................................................................................................. 59

Table 1-22 HCI motors ..................................................................................................................................... 61

Table 1-23 HCI motor failures .......................................................................................................................... 62

Table 1-24 Additional HCI Pickup and feed functions ...................................................................................... 65

Table 1-25 Stapler/stacker delivery modes ...................................................................................................... 69

Table 1-26 Stapler/stacker with hole punch delivery modes ............................................................................ 70

Table 1-27 Stapler/stacker motors ................................................................................................................... 72

Table 1-28 Stapler/stacker failure detection ..................................................................................................... 73

Table 1-29 Feed-and-delivery electrical components ...................................................................................... 75

Table 1-30 Motors for the stack job offset ........................................................................................................ 93

Table 1-31 Sensors used in stapling ................................................................................................

Table 1-32 Motors used in stapling .................................................................................................................. 96

................ 95

ENWW xxvii

Table 1-33 Output-bin-1-shift area sensor PCA ............................................................................................. 104

Table 1-34 Output-bin-2-shift area sensor PCA ............................................................................................. 104

Table 1-35 Delivery modes ............................................................................................................................ 111

Table 1-36 Booklet maker motors .................................................................................................................. 118

Table 1-37 Booklet maker motors .................................................................................................................. 121

Table 1-38 Booklet maker sensors ................................................................................................................. 122

Table 1-39 Booklet maker jam sensors .......................................................................................................... 125

Table 1-40 Booklet maker delivery modes ..................................................................................................... 126

Table 2-1 Preboot menu options (1 of 6) ....................................................................................................... 131

Table 2-2 Preboot menu options (2 of 6) ....................................................................................................... 133

Table 2-3 Preboot menu options (3 of 6) ....................................................................................................... 134

Table 2-4 Preboot menu options (4 of 6) ....................................................................................................... 135

Table 2-5 Preboot menu options (5 of 6) ....................................................................................................... 135

Table 2-6 Preboot menu options (6 of 6) ....................................................................................................... 136

Table 2-7 Troubleshooting flowchart .............................................................................................................. 139

Table 2-8 Control-panel diagnostic functions ................................................................................................. 141

Table 2-9 Product environment spacing ........................................................................................................ 151

Table 2-10 Heartbeat LED, product initialization ............................................................................................ 152

Table 2-11 Heartbeat LED, product operational ............................................................................................ 155

Table 2-12 Paper-path sensors diagnostic tests ............................................................................................ 159

Table 2-13 Manual sensor diagnostic tests .................................................................................................... 161

Table 2-14 Tray/bin manual sensors .............................................................................................................. 162

Table 2-15 Component test details ................................................................................................................ 164

Table 2-16 Motors and solenoids (paper path) .............................................................................................. 205

Table 2-17 Photo switches and sensors (product base) ................................................................................ 207

Table 2-18 Document feeder sensors ............................................................................................................ 208

Table 2-19 Jam sensors (product base) ......................................................................................................... 210

Table 2-20 High capacity input (HCI) feeder jam sensors ............................................................................. 211

Table 2-21 High capacity input (HCI) feeder cross section ............................................................................ 212

Table 2-22 Stapler/stacker (SS) and Stapler/stacker with hole punch (SSHP) cross section ........................ 213

Table 2-23 Booklet maker (BM) cross section ............................................................................................... 214

Table 2-24 DC controller PCA connectors .............................................................................................

Table 2-25 High capacity input (HCI) feeder controller PCA connectors ....................................................... 217

Table 2-26 Finishing accessories (all) controller PCA connectors ................................................................. 218

Table 2-27 Plug/jack locations (M806) ........................................................................................................... 220

Table 2-28 Plug/jack locations (M830) ........................................................................................................... 220

Table 2-29 M830 product integrated scanner assembly (ISA) ....................................................................... 222

Table 2-30 Base product covers .................................................................................................................... 223

Table 2-31 Base product main assemblies (1 of 3) ........................................................................................ 224

Table 2-32 Base product main assemblies (2 of 3) ........................................................................................ 225

Table 2-33 Base product main assemblies (3 of 3) ........................................................................................ 226

........ 215

xxviii ENWW

Table 2-34 High capacity input (HCI) feeder covers ...................................................................................... 227

Table 2-35 High capacity input (HCI) feeder main assemblies (1 of 3) .......................................................... 228

Table 2-36 High capacity input (HCI) feeder main assemblies (2 of 3) .......................................................... 229

Table 2-37 High capacity input (HCI) feeder main assemblies (3 of 3) .......................................................... 230

Table 2-38 Stapler/stacker and stapler/stacker with hole punch covers ........................................................ 231

Table 2-39 Booklet maker only covers ........................................................................................................... 232

Table 2-40 Finishing accessories main assemblies ....................................................................................... 233

Table 2-41 Important information on the configuration pages ........................................................................ 253

Table 2-42 Reports menu ............................................................................................................................... 255

Table 2-43 General Settings menu ................................................................................................................ 257

Table 2-44 Copy Settings menu (M830 only) ................................................................................................. 266

Table 2-45 Scan/Digital Send Settings menu (M830 only) ............................................................................ 273

Table 2-46 Fax Settings menu (M830 only) ................................................................................................... 284

Table 2-47 General Print Settings menu ........................................................................................................ 297

Table 2-48 Default Print Options menu .......................................................................................................... 300

Table 2-49 Display Settings menu ................................................................................................................. 302

Table 2-50 Manage Supplies menu ............................................................................................................... 304

Table 2-51 Manage Trays menu .................................................................................................................... 308

Table 2-52 Network Settings menu ................................................................................................................ 310

Table 2-53 Jetdirect Menu .............................................................................................................................. 310

Table 2-54 Troubleshooting menu ................................................................................................................. 322

Table 2-55 Backup/Restore menu .................................................................................................................. 325

Table 2-56 Calibration/Cleaning menu (M830) .............................................................................................. 326

Table 2-57 Calibration/Cleaning menu ........................................................................................................... 328

Table 2-58 Print modes under the Adjust Paper Types submenu ................................................................. 551

Table 2-59 MP modes under the Optimize submenu .............................................................

Table 2-60 Image defects table ...................................................................................................................... 553

Table 2-61 Solve performance problems ....................................................................................................... 561

Table B-1 Physical specifications, with toner cartridge .................................................................................. 592

Table B-2 Product dimensions with all doors and trays fully opened ............................................................. 592

Table B-3 Physical specifications, with toner cartridge .................................................................................. 592

Table B-4 Product dimensions with all doors, trays, and document feeder fully opened ............................... 592

Table B-5 Accessory specifications ................................................................................................................ 593

Table B-6 Accessory dimensions with all doors and trays fully opened ......................................................... 593

Table B-7 Operating-environment specifications ........................................................................................... 593

........................ 552

ENWW xxix

xxx ENWW

List of figures

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

Figure 1-2 Engine-control system ...................................................................................................................... 7

Figure 1-3 DC controller block diagram .............................................................................................................. 8

Figure 1-4 Fuser-control circuit ........................................................................................................................ 13

Figure 1-5 Fuser system block diagram ........................................................................................................... 14

Figure 1-6 Low-voltage power supply .............................................................................................................. 16

Figure 1-7 High-voltage power supply .............................................................................................................. 20

Figure 1-8 Laser/scanner system ..................................................................................................................... 21

Figure 1-9 Image formation process ................................................................................................................ 23

Figure 1-10 Layout of the toner cartridge ......................................................................................................... 24

Figure 1-11 Document feeder cross section .................................................................................................... 27

Figure 1-12 Document feeder sensor positions ............................................................................................... 28

Figure 1-13 Simplex operation paper path ....................................................................................................... 29

Figure 1-14 Duplex operation paper path ........................................................................................................ 30

Figure 1-15 Deskew rollers and width adjust ................................................................................................... 32

Figure 1-16 Separation angled ramp, separation roller, and separation pad ................................................... 33

Figure 1-17 Paper stopper ............................................................................................................................... 34

Figure 1-18 White backing and simplex selector .............................................................................................. 35

Figure 1-19 Duplex selector ............................................................................................................................. 36

Figure 1-20 Document feeder closed (book mode) .......................................................................................... 37

Figure 1-21 Document feeder open (max opening 70º) ................................................................................... 38

Figure 1-22 Pickup, feed, and delivery system blocks ..................................................................................... 39

Figure 1-23 Photo sensors and switches ......................................................................................................... 40

Figure 1-24 Motors and solenoids (paper path) ............................................................................................... 42

Figure 1-25 Tray 1 operations .......................................................................................................................... 44

Figure 1-26 Tray 2 cassette pickup operation .................................................................................................. 47

Figure 1-27 Tray 2 cassette multiple-feed prevention ...................................................................................... 48

Figure 1-28 Tray 2 cassette lift-up operation .................................................................................................... 51

Figure 1-29 Tray 2 cassette media-presence detection ................................................................................... 52

Figure 1-30 Sensors for jam detection ............................................................................................................. 53

Figure 1-31 HCI paper path .............................................................................................................

Figure 1-32 HCI signal flow .............................................................................................................................. 58

................. 57

ENWW xxxi

Figure 1-33 HCI electrical components ............................................................................................................ 59

Figure 1-34 HCI motors .................................................................................................................................... 61

Figure 1-35 HCI pickup-and-feed components ................................................................................................ 63

Figure 1-36 HCI lift-up operation mechanism ................................................................................................... 64

Figure 1-37 HCI jam sensor location ................................................................................................................ 66

Figure 1-38 Stapler/stacker paper path ............................................................................................................ 68

Figure 1-39 Hole punch paper path ................................................................................................................. 69

Figure 1-40 Stapler/stacker controller signal flow diagram .............................................................................. 71

Figure 1-41 Stapler/stacker feed-and-delivery electrical components ............................................................. 74

Figure 1-42 Hole punch feed-and-delivery electrical components ................................................................... 75

Figure 1-43 Straight feed .................................................................................................................................. 78

Figure 1-44 Switchback feed to the pass-through assembly/hole-puncher assembly (without hole

punching operation) ............................................................................................................................................ 79

Figure 1-45 Switchback feed to the hole-puncher assembly (with hole punching operation) .......................... 80

Figure 1-46 Hole-puncher assembly ................................................................................................................ 81

Figure 1-47 Operation of 4-hole punching ....................................................................................................... 86

Figure 1-48 Paper path when set to non-sort ................................................................................................... 87

Figure 1-49 Paper path for sizes other than A4, B5, or LTR ............................................................................ 88

Figure 1-50 Paper path (1 of 5) ........................................................................................................................ 89

Figure 1-51 Paper path (2 of 5) ........................................................................................................................ 89

Figure 1-52 Paper path (3 of 5) ........................................................................................................................ 89

Figure 1-53 Paper path (4 of 5) ........................................................................................................................ 90

Figure 1-54 Paper path (5 of 5) ........................................................................................................................ 90

Figure 1-55 Stapler/stacker assembly .............................................................................................................. 91

Figure 1-56 Process output bin ........................................................................................................................ 91

Figure 1-57 Motors and sensors for stack job offset ........................................................................................ 92

Figure 1-58 Stack job offset example ............................................................................................................... 92

Figure 1-59 Job offset operation (1 of 2) .......................................................................................................... 92

Figure 1-60 Job offset operation (2 of 2) .......................................................................................................... 93

Figure 1-61 Stack trailing-edge assist operation .............................................................................................. 94

Figure 1-62 Stack delivery ................................................................................................................................ 94

Figure 1-63 Stapler unit ............................................

Figure 1-64 Staple location .............................................................................................................................. 95

Figure 1-65 Paper path for stapling .................................................................................................................. 96

Figure 1-66 Rollers and sensors for stapling .................................................................................................... 97

Figure 1-67 Staple paper path ......................................................................................................................... 97

Figure 1-68 Shift process for the staple unit .................................................................................................... 98

Figure 1-69 Stapling operation (1 of 2) ............................................................................................................ 98

Figure 1-70 Stapling operation (2 of 2) ............................................................................................................ 99

Figure 1-71 Front 1-point stapling .................................................................................................................. 100

Figure 1-72 Rear 1-point stapling ................................................................................................................... 100

........................................................................................ 95

xxxii ENWW

Figure 1-73 2-point stapling ............................................................................................................................ 101

Figure 1-74 Items detected by the area sensors) .......................................................................................... 103

Figure 1-75 Output-bin components .............................................................................................................. 104

Figure 1-76 Shutter location ........................................................................................................................... 105

Figure 1-77 Jam detection sensors ................................................................................................................ 106

Figure 1-78 Switchback assembly sensors .................................................................................................... 107

Figure 1-79 Hole-punch assembly sensors .................................................................................................... 108

Figure 1-80 Stapler/stacker assembly sensors .............................................................................................. 109

Figure 1-81 Booklet maker paper path ........................................................................................................... 111

Figure 1-82 Booklet maker signal flow ........................................................................................................... 113

Figure 1-83 Paper delivery for booklet maker ................................................................................................ 114

Figure 1-84 Alignment plates ......................................................................................................................... 114

Figure 1-85 Stitching the stack ....................................................................................................................... 115

Figure 1-86 Position the stack ........................................................................................................................ 116

Figure 1-87 Fold and deliver the stack ........................................................................................................... 117

Figure 1-88 Booklet maker motors ................................................................................................................. 118

Figure 1-89 Feed drive for the booklet maker ................................................................................................ 119

Figure 1-90 Booklet-maker-unit paper path ................................................................................................... 120

Figure 1-91 Booklet maker motors ................................................................................................................. 121

Figure 1-92 Booklet maker sensors ............................................................................................................... 122

Figure 1-93 Booklet maker switches and microswitches ................................................................................ 124

Figure 1-94 Detecting jams in the booklet maker unit .................................................................................... 125

Figure 2-1 Touchscreen blank, white, or dim (no image) ............................................................................... 145

Figure 2-2 Touchscreen is slow to respond or requires multiple presses to respond .................................... 146

Figure 2-3 Touchscreen has an unresponsive zone ...................................................................................... 147

Figure 2-4 No control-panel sound ................................................................................................................. 148

Figure 2-5 Home button is unresponsive ....................................................................................................... 149

Figure 2-6 Hardware integration pocket (HIP) is not functioning (control panel functional) ........................... 150

Figure 2-7 Defeating interlocks (1 of 2) .......................................................................................................... 156

Figure 2-8 Defeating interlocks (2 of 2) .......................................................................................................... 157

Figure 2-9 Engine test button ......................................................................................................................... 158

Figure 2-10 Finishing controller PCA switches ............................................................................................... 167

Figure 2-11 Booklet maker (BM) saddle controller PCA switches

Figure 2-12 Stapler/stacker with hole punch (SSHP) punch controller PCA switches ................................... 169

Figure 2-13 Motors and solenoids (product base) ......................................................................................... 205

Figure 2-14 Rollers (product base) ................................................................................................................. 206

Figure 2-15 Switches and sensors (product base) ......................................................................................... 207

Figure 2-16 Document feeder sensors (M830 only) ....................................................................................... 208

Figure 2-17 Jam sensors (product base) ....................................................................................................... 210

Figure 2-18 High capacity input (HCI) feeder jam sensors ............................................................................ 211

Figure 2-19 High capacity input (HCI) feeder cross section ........................................................................... 212

.................................................................. 168

ENWW xxxiii

Figure 2-20 Stapler/stacker (SS) and Stapler/stacker with hole punch (SSHP) cross section ...................... 213

Figure 2-21 Booklet maker (BM) cross section .............................................................................................. 214

Figure 2-22 DC controller PCA connectors .................................................................................................... 215

Figure 2-23 High capacity input (HCI) feeder controller PCA connectors ...................................................... 217

Figure 2-24 Finishing accessories (all) controller PCA connectors ................................................................ 218

Figure 2-25 Plug/jack locations (M806) .......................................................................................................... 220

Figure 2-26 Plug/jack locations (M830) .......................................................................................................... 220

Figure 2-27 M830 product integrated scanner assembly (ISA) ...................................................................... 222

Figure 2-28 Base product covers ................................................................................................................... 223

Figure 2-29 Base product main assemblies (1 of 3) ...................................................................................... 224

Figure 2-30 Base product main assemblies (2 of 3) ...................................................................................... 225

Figure 2-31 Base product main assemblies (3 of 3) ...................................................................................... 226

Figure 2-32 High capacity input (HCI) feeder covers ..................................................................................... 227

Figure 2-33 High capacity input (HCI) feeder main assemblies (1 of 3) ........................................................ 228

Figure 2-34 High capacity input (HCI) feeder main assemblies (2 of 3) ........................................................ 229

Figure 2-35 High capacity input (HCI) feeder main assemblies (3 of 3) ........................................................ 230

Figure 2-36 Stapler/stacker and stapler/stacker with hole punch covers ....................................................... 231

Figure 2-37 Booklet maker only covers .......................................................................................................... 232

Figure 2-38 Finishing accessories main assemblies ...................................................................................... 233

Figure 2-39 General timing chart .................................................................................................................... 234

Figure 2-40 General circuit diagram, product base (1 of 3) ........................................................................... 235

Figure 2-41 General circuit diagram, product base (2 of 3) ........................................................................... 236

Figure 2-42 General circuit diagram, product base (3 of 3) ........................................................................... 237

Figure 2-43 General circuit diagram, high capacity input (HCI) feeder .......................................................... 238

Figure 2-44 General circuit diagram, finishing accessories (1 of 6) ............................................................... 239

Figure 2-45 General circuit diagram, finishing accessories (2 of 6) ............................................................... 240

Figure 2-46 General circuit diagram, finishing accessories (3 of 6) ............................................................... 241

Figure 2-47 General circuit diagram, finishing accessories (4 of 6) ............................................................... 242

Figure 2-48 General circuit diagram, finishing accessories (5 of 6) ............................................................... 243

Figure 2-49 General circuit diagram, finishing accessories (6 of 6)

Figure 2-50 Print-quality troubleshooting procedure page ............................................................................. 245

Figure 2-51 Black print-quality troubleshooting page ..................................................................................... 246

Figure 2-52 Configuration page ..................................................................................................................... 250

Figure 2-53 HP embedded Jetdirect page ..................................................................................................... 251

Figure C-1 Certificate of Volatility (1 of 2) ...................................................................................................... 605

Figure C-2 Certificate of Volatility (2 of 2) ...................................................................................................... 606

Figure C-3 Certificate of Volatility (1 of 2) ...................................................................................................... 607

Figure C-4 Certificate of Volatility (2 of 2) ...................................................................................................... 608

............................................................... 244

xxxiv ENWW

1 Theory of operation

Basic operation

●

Formatter-control system

●

Engine-control system

●

Laser/scanner system

●

Image-formation system

●

Scanning/image capture system

●

Pickup, feed, and delivery system

●

3,500-sheet high-capacity input (HCI) feeder

●

Stapler/stacker and stapler/stacker with hole punch

●

Booklet maker

●

ENWW 1

Basic operation

The product routes all high-level processes through the formatter, which stores font information, processes the print image, and communicates with the host computer.

The basic product operation comprises the following systems:

The engine-control system, which includes the DC controller printed circuit assembly (PCA), the

●

low-voltage and high-voltage power supplies, and the fuser control

The laser/scanner system, which forms the latent image on the photosensitive drum

●

The image-formation system, which transfers a toner image onto the paper

●

The paper feed system, which uses a system of rollers and belts to transport the paper through

●

the product

Accessories

●

Figure 1-1 Relationship between the main product systems

Formatter

Engine-control system

DC controller

Low-voltage power supply

High-voltage power supply

Fuser control

Laser/scanner system

Image-formation system

Pickup, feed and delivery

system

Input accessory

2 Chapter 1 Theory of operation ENWW

Sequence of operation

The DC controller in the engine-control system controls the operational sequences of the product. The following table describes durations and operations for each period of a print operation from the time the product is turned on until the motor stops rotating.

Normal sequence of operation

NOTE: The following sequence of operation applies to the engine portion of the product.

Table 1-1 Sequence of operation (product base)

Name Timing Purpose

WAIT The time required for the fuser surface

and rollers to reach target temperatures after the product is turned on (four minutes or less)

STBY (standby)

After the WAIT state or after the Last Rotation state until a print reservation command comes from the formatter

Initialize CPU and ASIC

●

Run fans 1-6 for 30 seconds; run duplexer fan for 3

●

seconds

Start formatter interface communication

●

Start fuser heaters

●

Start cartridge check

●

Check toner level memory

●

Start communication with optional interfaces (duplexer,

●

Tray 1, Tray 4)

Check cassette lifting and loading status

●

Check jam status (auto flush/eject)

●

Check for fuser wrapping jam

●

Check door open/sleep

●

Start fuser-roller temperature control and delivery motor

●

Run fuser control (fuser roller temperature at 180°C

●

(356°F), pressure roller at 140°C (285°F))

Await print reservation command (await INTR sequence)

●

Run fan motors 1-5 at half speed with fan 6 off

●

After five minutes or more, run the fuser/delivery motor for

●

about 0.08 seconds to prevent deformation of the pressure roller

ENWW Basic operation 3

Table 1-1 Sequence of operation (product base) (continued)

Name Timing Purpose

INTR (initial rotation)

PRINT After the input of a print command until

After a print-reservation command until the laser/scanner enters a ready state

the primary DC bias is turned off

Run scanner motor

●

Run fuser/delivery motor

●

Run drum motor

●

Run high-voltage control (negative bias to transfer roller)

●

Receive print command

●

Run fan motors 1-6 at full speed

●

Start pickup operation

●

Apply high-voltage control bias to primary charging roller,

●

developing roller, and transfer roller

Heat fuser roller to 190°C (374°F) and pressure roller to

●

180°C (356°F)

Execute final check on initial rotation (high-voltage,

●

scanner motor, pickup operation complete)

Check jam/door open/failure/sleep

●

Run fuser/delivery, drum, scanner, and fan motors

●

Set fuser control to print temperature: fuser 190°C

●

(374°F)

Send engine-to-formatter output signal

●

LSTR (last rotation)

After the primary charging roller is turned off until each motor stops

Send formatter-to-engine input signal

●

Run paper-feed control

●

Run image control

●

Set high-voltage control (toner level-output separation

●

bias and pressure roller bias)

Run next-pickup control to calculate the speed at which to

●

move paper

Check jam/door open/failure

●

Run fuser/delivery, drum, scanner, and fan motors.

●

Complete high-voltage control

Set fuser control to the standby temperature 180°C

●

(356°F); run fans 1–6 at full speed

Stop fuser/delivery, drum, and scanner motors (write in

●

cartridge memory)

Check jam/door open/failure; await next pickup

●

4 Chapter 1 Theory of operation ENWW

Formatter-control system

The formatter performs the following functions:

Controlls sleep mode

●

Receiving and processing print data from the various product interfaces

●

Monitoring control panel functions and relaying product status information (through the control

●

panel and the network or bidirectional interface)

Developing and coordinating data placement and timing with the DC controller PCA

●

Storing font information

●

Communicating with the host computer through the network or the bidirectional interface

●

The formatter receives a print job from the network or bidirectional interface and separates it into image information and instructions that control the printing process. The DC controller PCA synchronizes the image formation system with the paper input and output systems, and then signals the formatter to send the print image data.

Formatter hardware

The formatter system includes the following components.

Table 1-2 Formatter hardware components

Component Function

Microprocessor 800 mhz microprocessor stores fonts and control programs.

RAM Stores printing and font information and temporarily stores print-image data before it sent to

NVRAM Stores configuration information. NVRAM is saved when the product is turned off.

USB Sends and receives data through USB type B interface connector (connected to the host

Hard disk drive (HDD)

Solid state module (SSM)

Real time clock Used for the Wake-up time feature. It includes a battery to supply power when the product is

HP Jetdirect Inside (JDI) An Ethernet interface that is part of the formatter.

the print engine. RAM data is lost when the product is turned off.

NOTE: Upgrading RAM improves graphic-intense printing operations, but does not

increase the I/O buffer space or the printing speed.

computer).

The HDD or SSM store the firmware. A remote firmware upgrade process is used to overwrite and upgrade the firmware on the HDD or SSM.

turned off.

ENWW Formatter-control system 5

Control panel

The control panel is an 8 inch full color SVGA (M880) or 4.3 inch full color SVGA (M830) with capacitive touchscreen and adjustable viewing angle. It includes an easy-access USB port for walkup printing and a hardware integration pocket for third-party USB devices such as card readers.

The control panel has a diagnostic mode to allow testing of the touchscreen, Home button, and speaker. The control panel does not require calibration.

The M830 model has a QWERTY retractable keyboard beneath the control panel. The keys are mapped to your language in the same way the virtual keyboard on the product control panel is mapped. If you select a different keyboard layout for the virtual keyboard, the keys on the physical keyboard are remapped to match the new settings.

6 Chapter 1 Theory of operation ENWW

Engine-control system

The engine-control system receives commands from the formatter and interacts with the other main systems to coordinate all product functions. It consists of the following components:

DC controller

●

Low-voltage power supply

●

High-voltage power supply

●

Fuser control

●

Figure 1-2 Engine-control system

Formatter

Engine-control system

DC controller

Low-voltage power supply

High-voltage power supply

Fuser control

Laser/scanner system

Image-formation system

Pickup, feed and delivery

system

Input accessory

ENWW Engine-control system 7

DC controller

The DC controller controls the operational sequence of the product.

Figure 1-3 DC controller block diagram

AC input

Low-voltage

power supply

LED

Motor

Fuser

Transfer roller

Cartridge

Control panel

HIP

High-voltage

power supply

Connector PCA

DC controller

Fan

Solenoid

Clutch

Photointerrupter

Sensor

Switch

Duplex unit

Input accessory

Laser/scanner ass’y

MP tray pickup ass’y

Formatter

Output accessory

Table 1-3 Electrical components

Component type Abbreviation Component name

Motor DCM1 Fuser motor

DCM2 Drum motor

M1 Fuser shutter motor

M2 Tray 3 feed motor

M3 Tray 2 feed motor

M4 Scanner motor

8 Chapter 1 Theory of operation ENWW

Table 1-3 Electrical components (continued)

Component type Abbreviation Component name

STM1 Pickup motor

STM2 Lift-up motor

STM3 Cassette pickup motor

STM2001 Duplex side registration motor

STM2002 Duplex switchback motor

STM2003 Duplex feed motor

STM2004 Duplex re-pickup motor

STM2501 Tray 1 pickup motor

Fan FAN1 Power supply fan

FAN2 Controller fan

FAN3 Rear delivery fan (M806 only)

FAN3B Rear delivery fan (M830 only)

FAN4 Front delivery fan (M806 only)

FAN4B Front delivery fan (M830 only)

FAN5 Cartridge fan

FAN6 Center delivery fan (M806 only)

FAN7 Rear edge cooling fan

FAN8 Front edge cooling fan

FAN9 Condensation prevention fan

FAN2001 Duplex fan

Solenoid SL1 Face-up solenoid (M806 only)

SL2001 Duplex flapper solenoid

SL2501 Tray 1 pickup solenoid

Clutch CL2501 Tray 1 feed clutch

Switch SW1 Power switch

SW2 Tray 2 media-length switch

SW3 Tray 2 media-width switch

SW4 Tray 3 media-length switch

SW5 Tray 3 media-width switch

SW6 Left door open detection switch

SW7 Right door open detection switch

SW8 Front door open detection switch

SW9 Output accessory detection switch (M806 only)

ENWW Engine-control system 9

Table 1-3 Electrical components (continued)

Component type Abbreviation Component name

SW9B Output accessory detection switch (M830 only)

SW10 Interlock switch

— Test print switch

Photointerrupter PS1 Right media-width sensor

PS2 Left media-width sensor

PS3 Center media-width sensor

PS4 TOP sensor

PS5 Fuser shutter home position sensor

PS8 Tray 2 feed sensor C

PS9 Loop sensor

PS502 Fuser delivery sensor

PS503 Fuser depressurization sensor

PS1401 Tray 2 feed sensor B

PS1402 Tray 2 feed sensor A

PS1403 Tray 3 feed sensor B

PS1404 Tray 3 feed sensor A

PS1405 Tray 2 media-level sensor 1

PS1406 Tray 2 media-level sensor 2

PS1407 Tray 3 media-level sensor 1

PS1408 Tray 3 media-level sensor 2

PS1409 Tray 2 media-surface sensor

PS1410 Tray 2 media-presence sensor

PS1411 Tray 3 media-surface sensor

PS1412 Tray 3 media-presence sensor

PS1413 Cassette pickup roller home position sensor

PS1451 Face-down tray delivery sensor (M806 only)

PS1452 Face-down tray media-full sensor (M806 only)

PS2002 Duplex switchback sensor

PS2003 Duplex pre-registration sensor

PS2004 Duplex feed sensor

PS2005 Duplex residual media sensor

PS2501 Tray 1 media-presence sensor

PS2502 Tray 1 feed sensor

10 Chapter 1 Theory of operation ENWW

Motors

Table 1-3 Electrical components (continued)

Component type Abbreviation Component name

SR2001 Duplex side registration sensor

Sensor — Environment sensor

LED LED1 Power LED

The product has 14 motors for paper feed and image formation. The DC controller determines there is a motor failure if a motor does not reach a specified speed within a specified period after motor startup, or if the rotational speed is outside a specified range for a specified period.

Table 1-4 Motors

Abbreviation Component name Components driven or motor function

DCM1 Fuser motor Pressure roller and fuser delivery roller

Pressurizes or depressurizes the pressure roller

DCM2 Drum motor Photosensitive drum, registration roller and pre-registration

roller

M1 Fuser shutter motor Opens or closes the fuser shutter

M2 Tray 3 feed motor Tray 3 feed roller

M3 Tray 2 feed motor Tray 2 feed roller

M4 Scanner motor Scanner mirror

STM1 Pickup motor Moves the cassette pickup roller up or down

STM2 Lift-up motor Lifts the cassette

STM3 Cassette pickup motor Tray 2 pickup roller, Tray 2 feed roller, Tray 3 pickup roller,

and Tray 3 feed roller

STM2001 Duplex side registration motor Duplex side registration guide

STM2002 Duplex switchback motor Duplex inlet roller and duplex switchback roller

STM2003 Duplex feed motor Duplex registration roller and duplex feed roller

STM2004 Duplex re-pickup motor Duplex re-pickup roller

STM2501 Tray 1 pickup motor Tray 1 pickup roller and Tray 1 feed roller

The DC controller determines the following fan failures.

Failure detection function Supported feature

Power supply fan failure detection Yes

Controller fan failure detection Yes

Rear delivery fan failure detection Yes

Front delivery fan failure detection Yes

ENWW Engine-control system 11

Fans

Failure detection function Supported feature

Cartridge fan failure detection Yes

Center delivery fan failure detection (M806 only) Yes

Rear edge cooling fan failure detection Yes

Front edge cooling fan failure detection Yes

Condensation prevention fan failure detection Yes

Duplex fan failure detection Yes

The product fans prevent the temperature from rising in the product and cool the delivered paper.

Table 1-5 Fans

Abbreviation Component name Area cooled Type Speed Failure

detection

FAN1 Power supply fan Around the power supply

assembly

FAN2 Controller fan Around the formatter Intake Full/half Yes

FAN3 Rear delivery fan

(M806 only)

FAN3B Rear delivery fan

(M830 only)

FAN4 Front delivery fan

(M806 only)

FAN4B Front delivery fan

(M830 only)

FAN5 Cartridge fan Cartridge Intake Full/half Yes

FAN6 Center delivery fan

(M806 only)

FAN7 Rear edge cooling fan Around the fuser assembly Intake Full Yes

FAN8 Front edge cooling fan Around the fuser assembly Intake Full Yes

FAN9 Condensation

prevention fan

FAN2001 Duplex fan Inside the duplex unit Intake Full Yes

Around the delivery area Exhaust Full/half Yes

Around the delivery area Intake Full Yes

Around the fuser assembly Intake Full Yes

Exhaust Full/half Yes

12 Chapter 1 Theory of operation ENWW

Fuser-control circuit

This product features on-demand fusing. The fuser heater control circuit and the fuser heater safety circuit control the fuser temperature according to commands from the DC controller. The product uses on-demand fusing. The fuser-control circuit consists of the following major components:

Figure 1-4 Fuser-control circuit

TH3

TH4

Fuser sleeve

H1, H2

TH1

TH2

Pressure roller

FUSER TEMPERATURE signal

FUSER HEATER CONTROL signal

Fuser heater control

circuit

Low-voltage power supply

Fuser heater safety

circuit

DC controller

Table 1-6 Fuser components

Abbreviation Component name Function

H1 Fuser main heater Heats the center area of the fuser sleeve

H2 Fuser sub heater Heats the edge of the fuser sleeve

TH1 Main thermistor Detects the center temperature of the fuser heater (contact

type)

TH2 Small size thermistor Detects the temperature at one end of the fuser heater

(contact type)

TH3 Front thermistor Detects the temperature at one end of the fuser heater

(contact type)

TH4 Rear thermistor Detects the temperature at one end of the fuser heater

(contact type)

TP Thermoswitch Prevents an abnormal temperature rise of the fuser heater

(contact type)

ENWW Engine-control system 13

Figure 1-5 Fuser system block diagram

AC input

RL603

Fuser heater

control circuit

RL602

Zerocross

circuit

Relay control

circuit

Current

detection

circuit

Low-voltage

power supply

JP171

100V: Open 200V: Close

Fuser

/ZEROX

RLD1

RLD2

FSR_CUR

FSRD1

FSRD3

PW_TYP

DC controller

Fuser heater safety circuit

TH4

TH2

H1, H2

Pressure roller

TH3

TH1

Fuser sleeve ass’y

R_FSRTH

F_FSRTH

SS_FSRTH

M_FSRTH

/FSREXISTS

/FSREXISTS2

14 Chapter 1 Theory of operation ENWW

Fuser heater protection

The fuser protective function detects an abnormal temperature rise of the fuser unit and interrupts power supply to the fuser heater.

The following four protective components prevent an abnormal temperature rise of the fuser heater:

DC controller

●

The DC controller monitors the detected temperature of the thermistor. The DC controller deactivates the FUSER HEATER CONTROL signal and releases the relays (RL602, RL603) to interrupt power supply to the fuser heater when it detects an excessive temperature.

Fuser-heater safety circuit

●

The fuser heater safety circuit monitors the detected temperature of the thermistor. The fuser heater safety circuit releases the relays (RL602, RL603) to interrupt power supply to the fuser heater when it detects an excessive temperature.

Thermoswitch

●

The contact to the thermoswitch breaks to interrupt power supply to the fuser heater when the temperature of the fuser heater is abnormally high.

Current detection circuit

●

The DC controller detects the current value of the CURRENT DETECTION signal and deactivates the FUSER HEATER CONTROL signal to interrupt power supply to the fuser heater when the current is higher than a specified value.

Table 1-7 Fuser control functions

Function Supported feature

Fuser temperature control Yes

Fuser failure detection Yes

Frequency detection circuit failure detection Yes

Fuser depressurization mechanism failure detection Yes

Fuser type discrepancy detection N/A

Fuser type identification detection No

Fuser presence detection Yes

Fuser life detection Yes

Relay failure detection No

Pressure roller cleaning Yes

ENWW Engine-control system 15

Low-voltage power supply

The low-voltage power supply (LVPS) converts AC power into the DC voltage that the product components use. The following figure shows the system block diagram of the low-voltage power supply.

Figure 1-6 Low-voltage power supply

AC input

Low-voltage power supply

Fuse

FU101

Triac

FU102

Fuse

FU103

Fuse

Fuser

+3.3VB

DC controller

Power switch

SW1

Rectifying

circuit

+5V

generation

circuit

Protection

circuit

Rectifying

circuit

Zerocross

circuit

Protection

circuit

+24V

generation

circuit

+3.3V

generation

circuit

ZEROX

+24VB

+24VA

RMT_PFC

+5VA

+3.3VA

+5VC

RMT_5VC

PWRSAVE

+24VB

+24VA

+3.3VA

+5VR

+3.3VC

Interlock switch

SW10

The product uses three DC voltages: 24V, 5V, and 3.3V. The voltages are subdivided as follows:

Main DC voltage Sub-voltage Behavior

+24V +24VA Supplied constantly

Stopped during active off or inactive off

+24VB Interrupted when the front door is open (SW10)

Interrupted when the left door is open (SW10)

16 Chapter 1 Theory of operation ENWW

Main DC voltage Sub-voltage Behavior

+5V +5VA Supplied constantly

+5VB Controlled by the formatter

+5VC Supplied constantly

Stopped during active off or inactive off

+5VR Interrupted when the front door is open (SW10)

Interrupted when the left door is open (SW10)

+3.3V +3.3VA Supplied constantly

+3.3VB Supplied constantly

Stopped during active off or inactive off

+3.3VC Supplied constantly

Stopped during active off or inactive off

ENWW Engine-control system 17

Over-current/over-voltage protection

The low-voltage power supply (LVPS) has a protective circuit against over-current and over-voltage to prevent failures in the power supply circuit. It automatically stops supplying the DC voltage whenever excessive current flows or voltage abnormally increases.

If the DC voltage is not being supplied from the LVPS, the protective function might be running. In this case, turn off the power switch and unplug the power cable. Do not turn the power switch on until the root cause is found.

The DC controller notifies the formatter of a LVPS failure when the protective function is activated.

In addition, the LVPS has three fuses to protect against over-current. If over-current flows into the AC line, the fuse blows to stop AC power.

For safety, the product interrupts +24V and +5V power when the interlock switch is turned off. Accordingly, the DC voltage to the following components is interrupted:

High-voltage power supply

●

Drum motor

●

Fuser motor

●

Scanner motor

●

Duplex unit

●

Face-up solenoid (M806 only)

●

Laser driver

●

WARNING! The remote switch control circuit turns on or off the product power so that the AC power

flows even if the power switch is turned off. You must unplug the product power cord before servicing the product.

WARNING! If you believe the over-current or over-voltage protection circuits have been activated,

do not connect the product power cord or turn on the product power until the cause of the failure is found and corrected.

Table 1-8 Low-voltage power supply functions

Function Supported feature

Sleep mode No

Power supply voltage detection Yes

Automatic power OFF No

Automatic power ON/OFF No

Active OFF Yes

Inactive OFF Yes

Network mode No

Power switch illumination Yes

Low-voltage power supply failure detection Yes

Power save mode Yes

18 Chapter 1 Theory of operation ENWW

High-voltage power supply

The high-voltage power supply (HVPS) applies biases to the following components:

Primary charging roller

●

Developing roller

●

Transfer roller

●

Static charge eliminator

●

Fuser sleeve

●

Pressure roller

●

Pre-transfer guide

●

The following figure shows the system block diagram of the high-voltage power supply.

NOTE: The primary charging roller and the developing roller are in the cartridge.

ENWW Engine-control system 19

Figure 1-7 High-voltage power supply

High-voltage power supplyDC controller

Fuser

Fuser sleeve

Fusing bias

circuit

Primary charging

bias circuit

Developing bias

circuit

Static charge

eliminator bias

circuit

Transfer bias

circuit

Static charge

eliminator

Pressure roller

Cartridge

To primary charging roller

To developing roller

Pre-transfer guide

Transfer roller

Table 1-9 High-voltage power supply circuits

Bias generation circuit Purpose

Primary charging bias Applies bias to the primary charging roller to spread a uniform negative charge to the

photosensitive drum.

Developing bias Controls the amount of toner transferred to latent images on the photosensitive drum.

Pre-transfer upper guide bias Prevents toner from adhering to the pre-transfer upper guide.

Transfer bias Applies specific bias levels to the transfer charging roller at specific times.

Cleaning bias: Cleans the transfer charging roller by moving toner to the photosensitive

●

drum.

Between-page bias: Prevents residual toner from adhering to the transfer charging roller

●

between pages of a print job.

Print bias: Transfers toner to paper from the photosensitive drum.

●

Separation static charge eliminating bias

Toner level detection Monitors toner level via two antennae inside the toner cartridge.

Discharges paper at delivery.

20 Chapter 1 Theory of operation ENWW

Laser/scanner system

The laser unit of the laser/scanner system includes two laser diodes that enable scanning two lines simultaneously.

The laser/scanner PCA turns on the laser diodes based on signals from the DC controller and the formatter systems. The laser beams strike a six-sided mirror that rotates at a constant speed. The sixsided mirror reflects the beams through a focusing lens to a reflective mirror and then to the photosensitive drum, which also rotates at a constant speed. This allows the beams to scan across the drum at a constant speed to form the latent image on the drum surface.

Figure 1-8 Laser/scanner system

ENWW Laser/scanner system 21

Image-formation system

The image formation system consists of the toner cartridge, the transfer charging roller, and the fuser.

When the formatter sends a print command, the image formation system completes the following process.

1. The main motor rotates the photosensitive drum, the primary charging roller, the developing

cylinder, the transfer charging roller, and the pressure roller.

2. The primary charging roller applies a uniform negative charge to the photosensitive drum

surface.

3. The laser beams, modulated by signals from the formatter, focus on the photosensitive drum

surface to form a latent image.

4. Toner on the developing cylinder converts the latent image into a visible image, which is

transferred onto paper by the transfer charging roller.

5. The fuser applies heat and pressure to the toner image on the paper to make the image

permanent.

6. The cleaning blade scrapes residual toner from the photosensitive drum.

7. The primary charging roller applies a new charge to the photosensitive drum for the next image.

22 Chapter 1 Theory of operation ENWW

Image formation process

Each of the following processes functions independently and must be coordinated with the other product processes.

Figure 1-9 Image formation process

Image formation consists of the following processes.

Table 1-10 Image formation process

Step Process

Step 1: Primary charging (conditioning)

Step 2: laser beam exposure (writing)

Step 3: Developing The developing drum inside the toner cartridge receives a negative charge from the negative

Step 4: Pre-transfer The pre-transfer upper guide receives bias to prevent toner from adhering to it from the

Step 5: Transfer The transfer charging roller applies a positive charge to the paper causing the negatively

Step 6: Separation As the paper is separated from the photosensitive drum, the static charge eliminator reduces

Step 7: Fusing The paper with the toner image on it passes between the heated fuser roller and the

Step 8: Drum cleaning After the separation process, the drum is cleaned and conditioned for the next image. The

The primary charging roller, which is made of conductive rubber, is located inside the toner cartridge. An AC bias applied to it erases residual charges from the previous image. Then a negative DC bias applied to it creates a uniform negative potential on the photosensitive drum.

Two laser diodes project laser beams onto a rotating scanning mirror. As the scanning mirror rotates, it reflects the beams through a set of focusing lenses and onto another mirror, which reflects the beams through a slot in the top of the toner cartridge and onto the photosensitive drum. The beams sweep from left to right on the drum discharging the negative potential wherever they strike the surface. This creates the latent electrostatic image on the drum.

DC supply and charges the toner as it rotates. With the negative charge, the toner is attracted to the laser discharged areas of the latent image on the photosensitive drum and is repelled from the negatively charged (unexposed) areas.

photosensitive drum.

charged toner image to be attracted to the paper from the photosensitive drum.

the charge on the paper. This stabilizes the feed system and prevents loss of the toner image in temperature and humidity.

pressure roller. This melts the toner and presses it into the paper.

cleaning blade, which is always in contact with the surface of the drum, scrapes off excess toner. The excess toner is stored in the waste toner receptacle.

ENWW Image-formation system 23

Toner cartridge

The product has one toner cartridge. The cartridge consists of the following components.

Figure 1-10 Layout of the toner cartridge

Table 1-11 Toner cartridge components

Item number Component name

1 Primary charging roller

2 Laser beams

3 Blade

4 Developing cylinder

5 Developing cylinder

6 Cartridge memory

7 Flat antenna

8 Plate antenna

9 Transfer charging roller

10 Static charge eliminator

11 Photosensitive drum roller

12 Cleaner blade

13 Waste toner reservoir

Toner cartridge design

The toner cartridge contains three cylindrical toner reservoirs (callout 5) that interconnect. Cylindrical hoppers eliminate packing and accumulation in areas where the toner does not reach the development area (callout 4). Stirrers rotating within each of the cylinders unpack the toner allowing it to be displaced easily into the development area.

24 Chapter 1 Theory of operation ENWW

No-shake toner

The geometry of the hoppers and stirrers automatically redistributes and unpacks the toner eliminating the need to shake the toner cartridge at installation or when toner begins to run low. The toner cartridge is out of toner at the point when print fading occurs.

Toner cartridge memory chip

The toner cartridge includes a memory chip with RAM (callout 6) to record its condition and to provide information to the product. The memory chip controller reads and writes to the memory after receiving instructions from the DC controller, which monitors the antenna unit.

Read

●

When power is turned on

◦

When the front cover is closed

◦

When DC controller receives a command from the formatter

◦

Write

●

When a print operation is complete

◦

When the DC controller receives a command from the formatter

◦

Toner seal

The toner cartridge seal is opened automatically when the toner cartridge is installed into the product.

The DC controller checks the toner seal status to verify whether the toner cartridge is new whenever the product is turned on, the toner cartridge is inserted, or the front cover is closed. If the toner cartridge is new, the DC controller sends the open signal to the drum motor. The drum motor rotates in reverse to roll up the toner seal, and then, after a short time, the DC controller turns off the open signal.

The DC controller also monitors the presence of a toner cartridge. When a toner cartridge is inserted, the DC controller checks toner seal status as a signal that the toner cartridge is present.

Toner level detection

The toner cartridge includes a plate antenna and a flat antenna to enable the DC controller to detect toner-level.

Whenever the power is turned on, a door cover is closed, or a toner operation is performed, the DC controller sets the developing bias signal, and the developing AC bias circuit sends a signal to the toner level circuit 1 and to the developing cylinder. This causes the plate antenna to return the output value to the toner level circuit 1. The toner level circuit 1 compares the two signals and sends the results to the DC controller as the toner level detection signal. At the same time, the DC controller turns on the frequency output signal to output the reference frequency to the flat antenna. This causes the flat antenna to return the output value to the toner level circuit 2. The toner level circuit 2 compares the two signals and sends the results to the DC controller as a toner level percentage, which is accurate within 1%. The DC controller reports the result to the formatter.

ENWW Image-formation system 25

Scanning/image capture system

NOTE: The information in this section applies only to the HP LaserJet Enterprise Flow MFP M830

product.

Scanner

The scanner is a carriage-type platen scanner which includes the frame, glass, LED optics, and a scanner controller board (SCB) attached to the back of the assembly. The scanner has two sensors to detect Legal and Ledger/A3 sized paper and a switch to indicate when the document feeder is open.

The document feeder and control-panel assembly are attached to the scanner assembly. If the scanner fails, it can be replaced as a whole unit. The scanner replacement part does not include the document feeder, SCB, or control-panel assembly.

26 Chapter 1 Theory of operation ENWW

Document feeder system

Figure 1-11 Document feeder cross section

Item number Component name

1 Paper stopper

2 Input tray

3 Lift plate

4 Exit-drive roller

5Pick roller

6 Separation roller

7 Deskew-drive roller

8 Pre-scan drive roller

9 Simplex selector

10 Post-scan drive roller

11 Duplex selector (background selector)

12 Output tray

ENWW Scanning/image capture system 27

Document feeder sensors

The document feeder contains the following sensors:

Figure 1-12 Document feeder sensor positions

Table 1-12 Document feeder sensors

Item number Component name Description

1 Sensor, legal Detects whether there is a legal-size original.

2 Sensor, portrait/landscape Detects whether there is a portrait-size or landscape-size

3 Sensor, media width Detects the media stack width (one sheet or multiple sheets).

4 Sensor, stack height Detects the media stack height (one sheet or multiple sheets).

5 Sensor, paper presence Detects whether a document is present in the document feeder.

28 Chapter 1 Theory of operation ENWW

original.

Used in combination with other sensors to determine media size and orientation.

If paper is present in the document feeder when copies are made, the product scans the document using the document feeder. If no paper is present when copies are made, the product scans the document using the scanner glass.

Table 1-12 Document feeder sensors (continued)

Item number Component name Description

6 Sensor, ultrasonic Uses ultrasonic sound to detect a mutli-page paper feed.

7 Sensor, deskew Detects the top of the page as it approaches the back-side scan

8 Sensor, prescan1 Activates the frontside scan module (this component is in the

9 Sensor, prescan2 Activates the backside scan module and the backside

Document feeder simplex operation

Following is the basic sequence of operation for a document feeder simplex job.

Figure 1-13 Simplex operation paper path

NOTE: This sensor also functions as the pick success sensor.

module during e-duplex copy jobs.

scanner base) and the frontside background selector (this component is in the document feeder) if needed for an e-duplex copy job (HP EveryPage).

background selector if needed (these components are in the document feeder) for an e-duplex copy job.

Simplex scanSimplex scan

1. The

2. The

3. The

4. The

5. The

ENWW Scanning/image capture system 29

paper presence sensor

lift motor

height

sensor is triggered.

pick motor

rotates to raise the lift plate until the maximum height is reached or the

rotates to lower the pick roller and start picking the loaded paper.

ultrasonic sensor

is activated when paper is loaded in the input tray.

detects if more than one page passes the

separation roller

stack

. If there is a multipick, the document feeder stops, and an error message appears on the control-panel display.

deskew sensor

is activated when leading edge of paper is driven passed it. The firmware

registers the leading edge of paper position.

6. The leading edge of paper is continues to be driven into the pinch point of the

roller

and the

create a buckle of paper allowing for skew correction

deskew pinch rollers

. The paper is driven a preset distance past this point to

deskew drive

7. The

8. The

9. The

10. The

deskew motor

drive roller

pick motor

paper is being pulled in by the

feed motor

leading edge position as the

feed motor

prescan1 sensor

11. If the

12. The

13. The

14. The

15. The

ultrasonic sensor

activated, more than one page was loaded in the input tray, and the next page is fed starting with step 3. This is repeated for all pages loaded in the document feeder input tray.

prescan1 sensor

registers this position as the trailing edge of the paper.

feed motor

from

prescan1 sensor

feed motor

through the document feeder.

lift motor

ready state for the next scan operation.

rotates to drive the

stops turning and allows both the

deskew drive roller

rotates to drive paper into the

prescan1 sensor

continues to rotate to drive the paper leading edge a calibrated distance from

to the simplex scan area. The simplex scanner begins capturing scan data.

detects the trailing edge of the page and

is de-activated when trailing edge of paper passes it. The firmware

continues to rotate to drive the paper trailing edge through the preset distance

to the scan area. The

continues to rotate until the

rotates to lower the lift plate to the home position, and the document feeder is in a

deskew drive roller

pick and separator rollers

prescan1 sensor

is triggered.

simplex scanner

input tray

is empty and all pages have been fed

which pulls paper towards the

to free-spin while

. The firmware registers the paper

paper presence sensor

stops capturing scan data.

prescan

is still

Document feeder duplex operation

Following is the basic sequence of operation for a document feeder duplex job.

Figure 1-14 Duplex operation paper path

Simplex scan

Duplex scan

30 Chapter 1 Theory of operation ENWW

1. The

paper presence sensor

is activated when paper is loaded onto the input tray.

2. The

lift motor

height sensor

3. The

4. The

5. The

6. The leading edge of the paper is continues to be driven into the pinch point of the

7. The

pick motor

ultrasonic sensor

multipick, the document feeder stops and an error message appears on the control-panel display.

deskew sensor

firmware registers the leading edge of the paper position.

roller

and the

create a buckle of paper allowing for skew correction.

deskew motor

prescan drive roller

8. The

9. The

10. The

pick motor

while paper is being pulled in by the

feed motor

paper leading edge position as the

feed motor

prescan1 sensor

rotates to raise the lift plate until the maximum height is reached or the

is triggered.

rotates to lower the pick roller and start picking the loaded paper.

detects if more than one page passes the

is activated when the leading edge of the paper is driven passed it. The

deskew pinch rollers

rotates to drive the

stops turning and allows both the

rotates to drive the paper into the

continues to rotate to drive the paper leading edge a calibrated distance from

to the simplex scan area. The simplex scanner begins capturing scan data.

. The paper is driven a preset distance past this point to

deskew drive roller

which pulls the paper toward the

pick roller

deskew drive roller

prescan1 sensor

is triggered.

separation roller

and the

separator roller

. The firmware registers the

stack

. If there is a

deskew drive

to free-spin

11. The

12. The

feed motor

leading edge. The firmware registers the paper leading edge position as the triggered.

feed motor

prescan2 sensor

13. If the

14. The

15. The

16. The

17. The

18. The

ultrasonic sensor

still activated, more than one page was loaded, and the next page is fed (once the firmware has the memory available to store the scan data). This is repeated for all pages that are loaded in the document feeder.

prescan1 sensor

registers this position as the trailing edge of the paper.

feed motor

from the

prescan2 sensor

registers this position as the trailing edge of the paper.

feed motor

from the

feed motor

through.

continues to drive the paper until the

prescan2 sensor

is triggered by the paper

prescan2 sensor

continues to drive the paper leading edge through the calibrated distance from

to the duplex scan area. The

detects the trailing edge of the page and the

is de-activated when the trailing edge of the paper passes it. The firmware

continues to rotate to drive the paper trailing edge through the preset distance

prescan1 sensor

continues to rotate to drive the paper trailing edge through the preset distance

prescan2 sensor

continues to rotate until the

to the scan area. The simplex scanner stops capturing scan data.

is de-activated when the trailing edge of the paper passes it. The firmware

to the scan area. The

duplex scanner

input tray

is empty and all pages have been fed

begins capturing scan data.

paper presence sensor

stops capturing scan data.

19. The

ENWW Scanning/image capture system 31

lift motor

ready state for the next scan operation.

rotates to lower the lift plate to the home position and the document feeder is in a

Document feeder paper control and deskew

Figure 1-15 Deskew rollers and width adjust

Item number Component name

1 Deskew Pinch Rollers

2 Deskew Rollers

3 Width Adjust

Adjustable width adjust guides are provided on the input tray to ensure that the paper is stacked

●

together neatly at the center of the input tray. It also ensures the paper is located parallel with the direction of travel into the document feeder paper path.

To further minimize skew due to improper loading of paper in the input tray, a deskew function is

●

perform by buckling the paper to accumulate a paper buffer.

The leading edge of the paper lines up parallel with the deskew drive rollers in preparation to be

●

driven into the remaining paper path of the document feeder.

32 Chapter 1 Theory of operation ENWW

Document feeder paper pick and separation

Figure 1-16 Separation angled ramp, separation roller, and separation pad

Item number Description

1 Angled ramp

2 Separation roller

3 Separation pad

The top sheet of paper is picked by the pick roller.

●

The angled ramp (callout 1) profile functions as a barrier to prevent the remaining lower sheets

●

from being picked with the top sheet.

If more than one sheet of paper is being picked, the separation roller (callout 2) and separation

●

pad (callout 3) stop the lower sheet of paper, which allows only the single top sheet to be pulled into the document feeder.

The ultrasonic sensor, located behind the separator pad, ensures that the document feeder

●

stops if more than one page is picked (HP Every page technology).

The separation roller and separation pad are customer replaceable and have an expected life of

●

100,000 pages.

ENWW Scanning/image capture system 33

Document feeder paper stopper & fins

Figure 1-17 Paper stopper

Paper stopper A4/legal

Paper stopper A3/legal

The paper stopper on the output bin is adjustable to recieve A4 short edge/legal and A3/Ledger

●

paper.

An audible click sound can be heard when the paper stopper is pulled out and locked in position.

●

A spring automatically retracts the paper stopper when the user pushes in to close it.

●

A pair of guides function to neatly stack A4 long edge feed paper, and then collapse when a

●

longer sized paper is used.

34 Chapter 1 Theory of operation ENWW

Document feeder simplex selector

The simplex selector serves as a white or black background during the scanning process. The

●

black background is used when certain automatic cropping and edge detection modes are enabled on the device.

Switching between white and black mode is caused by rotating the deskew motor in reverse

●

which actuates a cam and lever that toggle the selector.

The simplex selector can sufficiently move (relative to the document feeder) to ensure consistent

●

and stable contact with the document feeder-specific window of the simplex scanner.

Document feeder white backing

Figure 1-18 White backing and simplex selector

Item number Description

1 White backing

ENWW Scanning/image capture system 35

The white backing (mounted to the document feeder; callout 1) ensures that any paper placed

●

on the flatbed scanner conforms to the glass, resulting in a uniform scan. The white color also enables scanning of transparent paper on the flatbed scanner window.

The optical properties (color and reflectance) are sufficient to achieve the required image quality

●

attributes on both transparent and non-transparent paper.

The material used is UV-stabilized so its color will not change over time after being exposed to

●

the light source from the scanner.

Document feeder duplex selector

Figure 1-19 Duplex selector

Item number Description

1 Duplex selector

The duplex selector is used as a white and black background for duplex scans. It also provides a

●

white surface for duplex scanner calibration when the device is powered on.

Switching between white, black, and calibration mode is caused by rotating the deskew motor in

●

reverse, which actuates a cam and lever that toggle the selector.

The duplex selector is biased toward the duplex scanner to keep the media conformed to the

●

duplex scanner glass.

The duplex selector is removable so that the surfaces of the selector and the scanner can be

●

cleaned if scans start to have lines in them. To access the seclector, open the cover hatch, raise the input tray, push on the green latches, and then pull duplex selector out of the document feeder.

36 Chapter 1 Theory of operation ENWW

Document feeder hinge

Figure 1-20 Document feeder closed (book mode)

The hinges of the document feeder allow the document feeder to move vertically and

●

accommodate the placement of books and other objects up to 40 mm (1.57 in) in height onto the flatbed scanner window, while still being able to close on top of the book or object (with the bottom of the document feeder mostly parallel to the flatbed scanner window).

The document feeder hinge provides a height adjustment of at least 40 mm (1.57 in) when a

●

maximum downward force of 5 kg (11 lb) is applied at front edge of the document feeder, with the fulcrum (such as the spine of a book) centered in the scan window and parallel to its long axis.

The document feeder is can withstand a downward force of at least 15 kg (33 lb) applied at the

●

front edge center of the document feeder, and the fulcrum (such as the spine of a book) oriented parallel to the long axis of the scan window but located anywhere within the scan window, without breaking, deforming, detaching, or experiencing performance degradation.

The document feeder hinge supports the document feeder in the open position and will prevent

●

the document feeder from damage by being slammed.

The hinge will hold the document feeder static in all positions higher than 125 mm (4.92 in) (as

●

measured at the front of the document feeder). The force required to open or close the document feeder is less than 2.27 kg (5 lb).

The hinge allows the document feeder to open to an angle of 70º from the horizontal.

●

ENWW Scanning/image capture system 37

Figure 1-21 Document feeder open (max opening 70º)

38 Chapter 1 Theory of operation ENWW

Pickup, feed, and delivery system

The DC controller controls the pickup, feed, and delivery system according to commands from the formatter.

The DC controller controls each block to pickup, feed and deliver paper. The pickup, feed, and delivery system consists of following three functional blocks:

Pickup-and-feed block: From each pickup source to the fuser inlet

●

Fuser-and-delivery block: From the fuser to each delivery destination

●

Duplex block: From the duplex switchback assembly to duplex re-pickup assembly

●

Figure 1-22 Pickup, feed, and delivery system blocks

Fuser-and-delivery block

Simplex paper path

Duplex paper path

Duplex block

Pickup-and-feed block

ENWW Pickup, feed, and delivery system 39

Photo sensors and switches

The following figure shows the sensors and switches for the pickup, feed, and delivery system.

Figure 1-23 Photo sensors and switches

PS1452

PS1451

PS2501

PS2502

PS502

PS9

PS4

PS2002

PS2003

PS2004

PS1410

SW2 SW3

PS1405 PS1406

PS1413

PS1412

SW4 SW5

PS1407 PS1408

Table 1-13 Photo sensors and switches

Abbreviation Component name

SW2 Tray 2 media-length switch

SW3 Tray 2 media-width switch

PS2005

PS1409

PS1411

PS1 PS2 PS3

PS8

PS1402

PS1401

PS1404

PS1403

SW4 Tray 3 media-length switch

SW5 Tray 3 media-width switch

PS1 Right media-width sensor

PS2 Left media-width sensor

PS3 Center media-width sensor

PS4 TOP sensor

PS8 Tray 2 feed sensor C

PS9 Loop sensor

PS502 Fuser delivery sensor

40 Chapter 1 Theory of operation ENWW

Table 1-13 Photo sensors and switches (continued)

Abbreviation Component name

PS1401 Tray 2 feed sensor B

PS1402 Tray 2 feed sensor A

PS1403 Tray 3 feed sensor B

PS1404 Tray 3 feed sensor A

PS1405 Tray 2 media-level sensor 1

PS1406 Tray 2 media-level sensor 2

PS1407 Tray 3 media-level sensor 1

PS1408 Tray 3 media-level sensor 2

PS1409 Tray 2 media-surface sensor

PS1410 Tray 2 media-presence sensor

PS1411 Tray 3 media-surface sensor

PS1412 Tray 3 media-presence sensor

PS1413 Cassette pickup roller home position sensor

PS1451 Face-down tray delivery sensor (M806 only)

PS1452 Face-down tray media-full sensor (M806 only)

PS2002 Duplex switchback sensor

PS2003 Duplex pre-registration sensor

PS2004 Duplex feed sensor

PS2005 Duplex residual media sensor

PS2501 Tray 1 media-presence sensor

PS2502 Tray 1 feed sensor

ENWW Pickup, feed, and delivery system 41

Motors and solenoids

Figure 1-24 Motors and solenoids (paper path)

SL1

SL2001

DCM1

DCM2

STM 2004

STM 2501

CL2501

SL2501

STM 2002

STM

2003

STM2

Table 1-14 Motors and solenoids (paper path)

Abbreviation Component name

DCM1 Fuser motor

DCM2 Drum motor

M2 Tray 3 feed motor

M3 Tray 2 feed motor

STM1 Pickup motor

STM2 Lift-up motor

STM3 Cassette pickup motor

STM3STM1

STM2002 Duplex switchback motor

42 Chapter 1 Theory of operation ENWW

Table 1-14 Motors and solenoids (paper path) (continued)

Abbreviation Component name

STM2003 Duplex feed motor

STM2004 Duplex re-pickup motor

STM2501 Tray 1 pickup motor

SL1 Face-up solenoid (M806 only)

SL2001 Duplex flapper solenoid

SL2501 Tray 1 pickup solenoid

CL2501 Tray 1 feed clutch

Pickup and feed system

The pickup and feed system picks up single sheets from Tray 2 or Tray 3, feeds each sheet to the fuser unit, and delivers each sheet to the face-up bin or to the face-down bin.

When the product is turned on, the lifter lifts the stack of paper to the pickup area in preparation for printing. When the DC controller receives a print command, the pickup roller starts rotating and lowers to the paper surface. This feeds a sheet of paper to the feed rollers and to the pre-registration roller, which corrects the skew. After a short time, the sheet is fed to the photosensitive drum where the image is transferred onto the sheet. Then the sheet is fed to the fuser and delivered to a bin.

Media-size detection

The pickup and feed system includes a custom/standard switch and two media-size detection switches because either tray can accommodate custom paper sizes. If custom/standard switch is set to standard, the DC controller determines the width and length of the paper according to the sizedetection switches. If the custom/standard switch is set to custom, the system requires the dimensions to be configured in the control panel. The width-detection switches also sense the presence of trays. If all of the width detection switches are off, the DC controller assumes that a tray is missing.

Media-level detection

The lifter detects the paper level in the trays using a blocking plate and two sensors. The lifter position indicates the paper level by shutting off the sensors. Paper level is based on the approximate number of sheets in the tray: full (200 or more sheets), high (100 to 200 sheets), middle (50 to 100 sheets), or low (less than 50 sheets).

Multi-feed prevention

The product prevents feeding of multiple sheets using a torque-limited separation roller. The separation roller rotates in the opposite direction of the feed roller. The torque limiter allows the separation roller to be turned backward as the top sheet feeds into the system, but it returns additional sheets to the tray.

ENWW Pickup, feed, and delivery system 43

Transparency media detection

The transparency sensor detects transparency media by reading a light that shines through a prism in the paper path. Paper passing through the paper path blocks the light indicating that it is not a transparency.

Fuser-wrapping jam detection

The paper path includes a mechanism to detect jams where paper wraps around fuser rollers. The DC controller sends signals to the pressure roller bias generation circuit, which applies the same bias values to the pressure roller and to the wrapping jam detection circuit. The jam-detection lever solenoid contacts the pressure roller to monitor its bias value. The wrapping jam detection circuit compares the original bias value to the bias value monitored on the pressure roller. If the values differ, the circuit signals the DC controller that a wrapping jam has occurred and to stop the printing operation.

Tray 1

Tray 1 accommodates a wide variety of paper. It picks up and feeds paper directly into the paper path.

Tray 1 driver PCA

Tray 1 includes a driver PCA with a four-bit microcomputer (CPU-IC2501) that controls the operational sequence and the serial communications with the DC controller. The CPU drives a motor, a solenoid, and a clutch according to commands from the DC controller.

Figure 1-25 Tray 1 operations

Tray 1 power supply

The power supply provides +24 volts DC to the motor, the solenoid, and the clutch, and +3.3 volts DC for the IC and the sensors.

44 Chapter 1 Theory of operation ENWW

Tray 1 sequence of operation

If no paper is detected by the paper path sensor, the Tray 1 pickup roller is returned to its initial position whenever any of the following occurs:

The door is closed.

●

The product returns from sleep mode.

●

Tray 1 is installed.

●

Tray 1 picks up paper according to the following sequence:

1. Receives a pickup command

2. Turns on the pickup solenoid (SL2501) to places the pickup roller in contact with the paper

surface

3. Turns on the feed clutch (CL2501) to rotate the pickup roller and the feed roller to pick up the

paper

4. Feeds the paper to the between-page adjustment position, turns off CL2501, and feeds paper

into the paper path

5. Receives a feed-stop command, stops the motor, and returns to a standby state

Tray 1 pickup and feed

The pickup roller moves up and down to feed paper into the paper path. This happens when the pickup solenoid moves the stopper away from the pickup cam allowing the cam to rotate. After completing one rotation, the cam contacts the stopper again holding it in place to bring the pickup roller back to its initial position.

Tray 1 prevents feeding of multiple sheets using a torque-limited separation roller. The separation roller rotates in the opposite direction of the feed roller. The torque limiter allows the separation roller to be turned backward as the top sheet feeds into the system, but it returns additional sheets to the tray.

Tray 1 jam detection

Tray 1 (multi-purpose tray) includes a paper path sensor (PS2502) that detects the leading edge of the paper as it is transported into the paper path. If the paper path sensor fails to detect the paper within a specified time after the pickup solenoid is turned on, the CPU stops the operation and notifies the DC controller of a jam. The CPU in Tray 1 can detect the following jams.

Table 1-15 Tray 1 jam detection

Jam type Description

Pickup retry jam The paper path sensor fails to detect the leading edge of the paper 1 second after

Pickup delay jam The paper path sensor (PS2502) fails to detect the leading edge of paper within 3

turning on the pickup solenoid. The CPU stops the motor once, and then restarts it. Then it turns on the pickup solenoid 0.7 seconds later.

seconds of turning on the pickup solenoid. The CPU stops the operation and sends an error message to the DC controller.

Residual jam The paper path sensor detects paper when, as the product is turned on, the product is

returning from sleep mode or the front cover is being closed.

ENWW Pickup, feed, and delivery system 45

Tray 2 and Tray 3

Tray 2 and Tray 3 accommodate up to 500 sheets each. The pickup-and-feed block picks one sheet of paper from Tray 2 and feeds it into the fuser.

Tray 2 cassette pickup

The operational sequence of the Tray 2 cassette pickup is as follows:

1. The product is turned on or the Tray 2 cassette is inserted.

2. The lift-up operation and the lifting plate spring move up the lifting plate to the position where the

paper can be picked up.

3. The DC controller rotates the pickup motor when it receives a print command from the formatter.

4. The Tray 2 cassette (CST) feed roller rotates.

5. The Tray 2 cassette (CST) pickup solenoid is driven at a specified timing.

6. The Tray 2 cassette (CST) pickup roller rotates and picks up the paper.

7. The Tray 2 cassette (CST) separation roller removes any multiple-fed sheets.

8. One sheet of paper is fed into the product.

NOTE: The lift-up operation pushes up the lifting plate to keep the stack surface of paper at the

pickup position.

46 Chapter 1 Theory of operation ENWW

Figure 1-26 Tray 2 cassette pickup operation

DC controller

Pickup motor

CST pickup solenoid

SL1

CST pickup roller

CST feed roller

CST separation roller

Lifting plate spring

Lifter

ENWW Pickup, feed, and delivery system 47

Tray 2 cassette multiple-feed prevention

The product uses a separation roller method to prevent multiple sheets of print media from entering the paper path. The Tray 2 cassette separation roller does not have its own driving force. Therefore the Tray 2 cassette separation roller follows the rotation of the Tray 2 cassette pickup roller.

During normal feed, when the product picks up one piece of paper, the Tray 2 cassette separation roller is driven by the Tray 2 cassette pickup roller through one sheet of paper. Thus the separation roller rotates in the paper feed direction.

During multiple-feed, when the product picks up more than one piece of paper, the low friction force between the sheets weakens the driving force from the Tray 2 cassette pickup roller. In addition, some braking force is always applied to the Tray 2 cassette separation roller, so the weak rotational force of the pickup roller is not enough to rotate the separation roller. Therefore, the separation roller holds back any multiple-fed sheets, and one sheet of paper is fed into the product.

Figure 1-27 Tray 2 cassette multiple-feed prevention

CST separation roller

CST Pickup roller

Print media

Lifting plate

The separation roller does not rotate

<Normal-feed> <Multiple-feed>

48 Chapter 1 Theory of operation ENWW

Tray 2 cassette media-size detection and Tray 2 cassette-presence detection

The DC controller detects the size of paper loaded in the Tray 2 cassette by using the Tray 2 cassette-media-end switch and Tray 2 cassette-media-width switch.

The DC controller also detects the presence of the cassette by using the Tray 2 cassette-media-end switch. The DC controller notifies the formatter if the Tray 2 cassette is absent.

Table 1-16 Stapler/stacker delivery modes

Paper size Cassette-media-width switch Cassette-media-end switch

Top switch Center switch Bottom switch

A4 On On On See footnote Off Off

Letter On On Off Off Off

B5 On Off Off Off Off

Executive Off Off Off Off Off

A5-R Off On On Off Off

B5-R Off Off On Off Off

Letter-R On Off On Off Off

A4-R On Off On Off On

Top switch

Center switch Bottom switch

A3 On On On On On

11 X 17OnOnOff OnOn

B4 On Off Off On On

Legal On Off On On On

The top Tray 2 cassette-media-end switch detects the presence of the Tray 2 cassette. It turns off when the Tray 2 cassette is present and turns on when the Tray 2 cassette is absent.

ENWW Pickup, feed, and delivery system 49

Tray 2 cassette lift-up operation

The cassette lift-up operation keeps the paper stack surface at the correct pickup position if either of the following conditions occur:

Product power is turned on.

●

Tray 2 cassette is installed.

●

The following list describes the sequence of the Tray 2 cassette lift-up operation:

a. The Tray 2 cassette lifter motor rotates to move the lifter rack toward the Tray 2 cassette-

mediastack surface sensor.

b. As the lifter rack moves, the lifter moves up.

c. The Tray 2 cassette lifter motor stops when the Tray 2 cassette-media-stack surface sensor

detects the lifter rack.

50 Chapter 1 Theory of operation ENWW

The DC controller determines a Tray 2 cassette lifter motor failure and notifies the formatter if the Tray 2 cassette-media-stack surface sensor does not detect the lifter rack within a specified period after the Tray 2 cassette lifter motor starts rotating.

Figure 1-28 Tray 2 cassette lift-up operation

PS4: Cassette media stack surface sensor

Cassette

Lifting plate

Lifter

Lifter rack

Cassette lifter motor

DC controller

Lifter drive ass’y

ENWW Pickup, feed, and delivery system 51

Tray media-presence detection

The Tray 2 cassette-media-out sensor detects the presence of paper in the Tray 2 cassette.

The DC controller notifies the formatter when the Tray 2 cassette-media-out sensor detects the media is absent.

Figure 1-29 Tray 2 cassette media-presence detection

DC controller

PS1 Cassette-media-width sensor

Cassette-media-end switch

52 Chapter 1 Theory of operation ENWW

Jam detection

The product uses the following sensors to detect the presence of paper and to check whether the paper is being fed correctly or has jammed.

Figure 1-30 Sensors for jam detection

PS1451

Simplex paper path

Duplex paper path

PS1452

PS2002

PS2003

PS502

PS9

Table 1-17 Jam detection sensors

Abbreviation Component name

PS1 Right media-width sensor

PS4

PS2004

PS2502

PS1 PS2 PS3

PS2005

PS1409PS1410

PS1411PS1412

PS1402

PS1404

PS8

PS1401

PS1403

PS2501

PS2 Left media-width sensor

PS3 Center media-width sensor

PS4 TOP sensor

PS8 Tray 2 feed sensor C

PS9 Loop sensor

PS502 Fuser delivery sensor

PS1401 Tray 2 feed sensor B

PS1402 Tray 2 feed sensor A

PS1403 Tray 3 feed sensor B

PS1404 Tray 3 feed sensor A

PS1451 Face-down tray delivery sensor (M806 only)

ENWW Pickup, feed, and delivery system 53

Table 1-17 Jam detection sensors (continued)

Abbreviation Component name

PS1452 Face-down tray media-full sensor (M806 only)

PS2002 Duplex switchback sensor

PS2003 Duplex pre-registration sensor

PS2004 Duplex feed sensor

PS2005 Duplex residual media sensor

PS2502 Tray 1 feed sensor

Table 1-18 Jams detected by the DC controller

Jam Supported feature

No pick jam 1 Yes

No pick jam 2 Yes

No pick jam 3 Yes

No pick jam 4 No

Pickup stay jam 1 Yes

Pickup stay jam 2 No

Pickup stay jam 3 No

Pickup stay jam 4 No

Fuser delivery delay jam 1 Yes

Fuser delivery delay jam 2 No

Fuser delivery delay jam 3 No

Fuser delivery delay jam 4 No

Fuser delivery stay jam 1 Yes

Fuser delivery stay jam 2 N/A

Fuser delivery stay jam 3 No

Fuser delivery stay jam 4 No

Residual paper jam 1 Yes

Residual paper jam 2 N/A

Residual paper jam 3 No

Residual paper jam 4 No

Door open jam 1 Yes

Door open jam 2 No

Door open jam 3 No

Door open jam 4 No

54 Chapter 1 Theory of operation ENWW

Table 1-18 Jams detected by the DC controller (continued)

Jam Supported feature

Fuser wrapping jam 1 Yes

Fuser wrapping jam 2 No

Fuser wrapping jam 3 No

Fuser wrapping jam 4 No

The product detects the following jams.

Table 1-19 Jam detection

Jam Causes and conditions

Pickup 1 delay jam Media fails to reach Tray 2 feed sensor A (PS1402) or Tray 3 feed sensor A (PS1404) within

3.2 seconds after pickup begins.

Pickup 2 delay jam

Fuser delivery 1 delay jam The leading edge fails to reach the fuser delivery sensor (PS502) within 1.4 seconds after

Fuser delivery 2 delay jam The leading edge fails to reach the fuser jam sensor (PS501) within 1.6 seconds after the /

Fuser delivery stationary jam The trailing edge fails to clear the fuser delivery sensor (PS502) within the specified time (3.4

Face-down delivery delay jam

Face-down delivery stationary jam

Media fails to reach Tray 2 feed sensor B (PS1401) or Tray 3 feed sensor B (PS1403)

●

within 3.0 seconds after Tray 2 feed sensor A (PS1402) or Tray 3 feed sensor A (PS1404) detects the leading edge.

Media fails to reach the registration paper sensor (PS2) within 4.0 seconds after Tray 2

●

feed sensor B (PS1401) detects the leading edge of the media or within 4.5 seconds after Tray 3 feed sensor B (PS1403) detects the leading edge.

the /VSYNC signal.

VSYNC signal.

seconds for A3 media or 2.5 seconds for A4 media) after the /VSYNC signal.

The leading edge fails to reach the face-down bin delivery sensor (PS1451) within 2.4 seconds after the /VSYNC signal.

The leading edge fails to clear the face-down bin delivery sensor (PS1451) within the specified time (4.3 seconds for A3 media or 3.4 seconds for A4 media) after the /VSYNC signal.

ENWW Pickup, feed, and delivery system 55

Table 1-19 Jam detection (continued)

Jam Causes and conditions

Door open jam The following sensors detect media in the system when the door is opened or closed:

Registration paper sensor (PS2)

●

Fuser delivery sensor (PS501)

●

Fuser jam sensor (PS502)

●

Face-down bin delivery sensor (PS1451)

●

Tray 2 feed sensor A (PS1401)

●

Tray 2 feed sensor B (PS1401)

●

Tray 3 feed sensor A (PS1404)

●

Tray 3 feed sensor B (PS1403)

●

Residual jam The following conditions indicate a residual jam:

The product is turned on, and the fuser delivery sensor (PS502) and the fuser jam

●

sensor (PS501) have detected media during the startup process.

The DC controller has not received an automatic delivery command three minutes after

●

a jam that should include the command was cleared.

At least one of the following sensors detects media after a jam was cleared, the jammed

●

media was delivered, the product is turned on, and the fuser is at target temperature:

Registration paper sensor (PS2)

◦

Fuser delivery sensor (PS501)

◦

Fuser jam sensor (PS502)

◦

Tray 2 feed sensor B (PS1401)

◦

Tray 3 feed sensor B (PS1403)

◦

Face-down bin delivery sensor (PS1451)

◦

56 Chapter 1 Theory of operation ENWW

3,500-sheet high-capacity input (HCI) feeder

The 3,500-sheet paper deck is optionally installed at the bottom of the product. The 3,500-sheet paper deck picks up one sheet of paper and feeds it to the product.

The following figure shows the installation and the paper path.

Figure 1-31 HCI paper path

Intermediate feed roller

Cassette feed roller

3,500-sheet paper deck

Cassette separation roller

Cassette pickup roller

Left cassette

The HCI controller controls the operational sequence of the 3,500-sheet paper deck.

Right cassette

ENWW 3,500-sheet high-capacity input (HCI) feeder 57

Figure 1-32 HCI signal flow

3,500-sheet paper deck

+3.3V

+24V

DC controller HCI controller

Table 1-20 HCI electrical components

Component type Abbreviation Component name

Motor M3301 HCI right cassette pickup motor

M3302 HCI right cassette lifter motor

M3303 HCI left cassette lifter motor

M3304 HCI left cassette pickup motor

M3305 HCI intermediate feed motor

Solenoid SL3301 HCI right cassette pickup solenoid

SL3302 HCI left cassette pickup solenoid

Motor

Solenoid

Photointerruptor

Switch

Photointerrupter PS3101 HCI right cassette lift-up media-surface sensor

PS3102 HCI right cassette pickup coordinate media-surface sensor

PS3103 Right cassette media-presence sensor

PS3201 HCI left cassette lift-up media-surface sensor

PS3202 HCI left cassette pickup coordinate media-surface sensor

PS3203 HCI left cassette media-presence sensor

PS3301 HCI media feed sensor

PS3302 HCI right cassette media feed sensor

PS3303 HCI right cassette media size sensor

PS3304 HCI left cassette media size sensor

PS3305 HCI left cassette media feed sensor

PS3306 HCI side feed guide open detection sensor

PS3307 HCI intermediate unit presence sensor

PS3308 HCI right cassette media-level sensor

PS3309 HCI left cassette media-level sensor

58 Chapter 1 Theory of operation ENWW

Table 1-20 HCI electrical components (continued)

Component type Abbreviation Component name

Switch SW3301 HCI right door open detection switch

HCI electrical components

The 3,500-sheet high-capacity input (HCI) feeder has two cassettes and each of them operates in the same manner.

Figure 1-33 HCI electrical components

SW3302 HCI right cassette open detection switch

SW3303 HCI left cassette open detection switch

M3304

SL3302

PS3203

PS3201

PS3202

PS3309

PS3304

Table 1-21 HCI electrical components

PS3305

PS3101

M3302M3303

PS3306

PS3103

PS3102

PS3308

PS3302

SL3301

PS3303SW3303 SW3302

PS3307 PS3301

M3305

SW3301

M3301

Abbreviation Component name Signal

M3301 Right cassette pickup motor HCI RIGHT CASSETTE PICKUP MOTOR

CONTROL signal

M3302 Right cassette lifter motor HCI RIGHT CASSETTE LIFTER MOTOR

CONTROL signal

M3303 Left cassette lifter motor HCI LEFT CASSETTE LIFTER MOTOR

CONTROL signal

M3304 Left cassette pickup motor HCI LEFT CASSETTE PICKUP MOTOR

CONTROL signal

SL3301 Right cassette pickup solenoid HCI RIGHT CASSETTE PICKUP SOLENOID

signal

ENWW 3,500-sheet high-capacity input (HCI) feeder 59

Table 1-21 HCI electrical components (continued)

Abbreviation Component name Signal

SL3302 Left cassette pickup solenoid HCI LEFT CASSETTE PICKUP SOLENOID signal

CL3301 Right cassette pickup clutch HCI RIGHT CASSETTE PICKUP CLUTCH signal

CL3302 Left cassette pickup clutch HCI LEFT CASSETTE PICKUP CLUTCH signal

SW3301 Right door open detection switch HCI RIGHT DOOR OPEN DETECTION signal

SW3302 Right cassette open detection switch HCI RIGHT CASSETTE OPEN DETECTION

signal

SW3303 Left cassette open detection switch HCI LEFT CASSETTE OPEN DETECTION signal

PS3101 Right cassette lift-up media-surface sensor HCI RIGHT CASSETTE MEDIA STACK

SURFACE 2 signal

PS3102 Right cassette pickup coordinate media-surface

sensor

PS3103 Right cassette media-presence sensor HCI RIGHT CASSETTE MEDIA OUT signal

PS3201 Left cassette lift-up media-surface sensor HCI LEFT CASSETTE MEDIA STACK SURFACE

PS3202 Left cassette pickup coordinate media-surface

sensor

PS3203 Left cassette media-presence sensor HCI LEFT CASSETTE MEDIA OUT signal

PS3301 Media-feed sensor HCI MEDIA FEED signal

PS3302 Right cassette media-feed sensor HCI RIGHT CASSETTE MEDIA FEED signal

PS3303 Right cassette media-size sensor HCI RIGHT CASSETTE MEDIA SIZE signal

PS3304 Left cassette media-size sensor HCI LEFT CASSETTE MEDIA SIZE signal

PS3305 Left cassette media-feed sensor HCI LEFT CASSETTE MEDIA FEED signal

PS3306 Side feed guide open detection sensor HCI LONG EDGE FEED GUIDE OPEN

PS3308 Right cassette media-level sensor HCI RIGHT CASSETTE MEDIA LEVEL signal

PS3309 Left cassette media-level sensor HCI LEFT CASSETTE MEDIA LEVEL signal

HCI RIGHT CASSETTE MEDIA STACK SURFACE 1 signal

2 signal

HCI LEFT CASSETTE MEDIA STACK SURFACE 1 signal

DETECTION signal

60 Chapter 1 Theory of operation ENWW

HCI motor control

The HCI has five motors in each cassette for paper-feed and cassette lift-up.

Figure 1-34 HCI motors

PS3201

PS3309

Table 1-22 HCI motors

M3304

PS3203

PS3202

PS3304

SL3302

PS3305

PS3101

M3302M3303

PS3306

PS3103

PS3102

PS3308

PS3302

SL3301

PS3303SW3303 SW3302

PS3307 PS3301

M3305

SW3301

M3301

Abbreviation Component name Components driven

M3301 HCI right cassette pickup motor Pickup roller, separation roller, and feed roller for the HCI right

cassette

M3302 HCI right cassette lifter motor Lifter for the HCI right cassette

M3303 HCI left cassette lifter motor Lifter for the HCI left cassette

M3304 HCI left cassette pickup motor Pickup roller, separation roller, and feed roller for the HCI left

cassette

M3305 HCI intermediate feed motor Intermediate feed roller

ENWW 3,500-sheet high-capacity input (HCI) feeder 61

HCI motor failure detection

The HCI controller determines the following motor failures.

Table 1-23 HCI motor failures

Failure detection function Supported feature

Right cassette pickup motor failure detection No

Right cassette lifter motor failure detection Yes

Left cassette lifter motor failure detection Yes

Left cassette pickup motor failure detection No

The formatter is notified is a jam is caused when the cassette pickup motors fail.

62 Chapter 1 Theory of operation ENWW

HCI pickup-and-feed operation

The 3,500-sheet paper deck picks up one sheet of paper in the paper deck cassette and feeds it to the product. The 3,500-sheet paper deck has two cassettes and each of them operates in the same manner. This section uses the left cassette for explanation.

Figure 1-35 HCI pickup-and-feed components

M3304

SL3302

PS3203

PS3201

PS3202

PS3309

PS3304

Abbreviation Component name

PS3305

PS3101

M3302M3303

PS3306

PS3103

PS3102

PS3308

PS3302

SL3301

PS3303SW3303 SW3302

PS3307 PS3301

M3305

SW3301

M3301

M3301 Right cassette pickup motor

M3302 Right cassette lifter motor

M3303 Left cassette lifter motor

M3304 Left cassette pickup motor

M3305 Intermediate feed motor

SL3301 Right cassette pickup solenoid

SL3302 Left cassette pickup solenoid

SW3301 Right door open detection switch

SW3302 Right cassette open detection switch

SW3303 Left cassette open detection switch

PS3101 Right cassette lift-up media-surface sensor

PS3102 Right cassette pickup coordinate media-surface sensor

PS3103 Right cassette media-presence sensor

PS3201 Left cassette lift-up media-surface sensor

ENWW 3,500-sheet high-capacity input (HCI) feeder 63

Abbreviation Component name

PS3202 Left cassette pickup coordinate media-surface sensor

PS3203 Left cassette media-presence sensor

PS3301 Media feed sensor

PS3302 Right cassette media feed sensor

PS3303 Right cassette media-size sensor

PS3304 Left cassette media-size sensor

PS3305 Left cassette media feed sensor

PS3306 Side feed guide open detection sensor

PS3307 Intermediate unit presence sensor

PS3308 Right cassette media-level sensor

PS3309 Left cassette media-level sensor

HCI lift-up operation

The HCI lifts up the tray to keep the surface of the paper at the pickup position whenever any of the following occur:

The product is turned on.

●

The cassette is installed.

●

The paper stack surface lowers as a result of the pickup operation.

●

Figure 1-36 HCI lift-up operation mechanism

HCI left cassette media stack surface 1 sensor

PS3202

HCI left cassette media stack surface 2 sensor

Wire

PS3201

Tray

Pulley

M3303

HCI left cassette lifter motor

The figure above illustrates the mechanism for the left cassette, but each HCI cassette has the same mechanism.

64 Chapter 1 Theory of operation ENWW

HP Laserjet Enterprise M806, M830 troubleshooting manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Theory of operation

Basic operation

Sequence of operation

Normal sequence of operation

Formatter-control system

Formatter hardware

Control panel

Engine-control system

DC controller

Motors

Fans

Fuser-control circuit

Fuser heater protection

Low-voltage power supply

Over-current/over-voltage protection

High-voltage power supply

Laser/scanner system

Image-formation system

Image formation process

Toner cartridge

Toner cartridge design

No-shake toner

Toner cartridge memory chip

Toner seal

Toner level detection

Scanning/image capture system

Scanner

Document feeder system

Document feeder sensors

Document feeder simplex operation

Document feeder duplex operation

Document feeder paper control and deskew

Document feeder paper pick and separation

Document feeder paper stopper & fins

Document feeder simplex selector

Document feeder white backing

Document feeder duplex selector

Document feeder hinge

Pickup, feed, and delivery system

Photo sensors and switches

Motors and solenoids

Pickup and feed system

Media-size detection

Media-level detection

Multi-feed prevention

Transparency media detection

Fuser-wrapping jam detection

Tray 1

Tray 1 driver PCA

Tray 1 power supply

Tray 1 sequence of operation

Tray 1 pickup and feed

Tray 1 jam detection

Tray 2 and Tray 3

Tray 2 cassette pickup

Tray 2 cassette multiple-feed prevention

Tray 2 cassette media-size detection and Tray 2 cassette-presence detection

Tray 2 cassette lift-up operation

Tray media-presence detection

Jam detection

3,500-sheet high-capacity input (HCI) feeder

HCI electrical components

HCI motor control

HCI motor failure detection

HCI pickup-and-feed operation

HCI lift-up operation