HP LaserJet Enterprise MFP M630 Troubleshooting Manual and Repair Manual

LaserJet Enterprise MFP M630

Troubleshooting Manual

M630h

M630zM630fM630dn

www.hp.com/support/ljMFPM630

For product repair and part number information, see the Repair 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.

Edition 1, 9/2014

Conventions used in this guide

TIP: Helpful hints or shortcuts.

Reinstallation tip: Reinstallation helpful hints, shortcuts, or considerations.

NOTE: Information that explains a concept or how to complete a task.

IMPORTANT: Information that help the user to avoid potential product error conditions.

CAUTION: Procedures that the user must follow to avoid losing data or damaging the product.

WARNING! Procedures that the user must follow to avoid personal injury, catastrophic loss of data, or

extensive damage to the product.

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Table of contents

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

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

Sequence of operation (product) ........................................................................................................ 4

Sequence of operation (scanner) ........................................................................................................ 5

Formatter-control system ..................................................................................................................................... 6

Formatter hardware ............................................................................................................................ 6

Sleep mode ....................................................................................................................... 6

Input/output (I/O) ............................................................................................................. 8

CPU .................................................................................................................................... 8

Memory ............................................................................................................................. 8

Random access memory (RAM) ...................................................................... 8

Firmware ........................................................................................................................... 8

Nonvolatile random access memory (NVRAM) ................................................................. 8

Image Resolution Enhancement technology ................................................................... 8

HP Memory Enhancement technology ............................................................................. 9

Printer job language (PJL) ................................................................................................. 9

Printer management language (PML) .............................................................................. 9

Control panel ....................................................................................................................................... 9

Scanner interface ................................................................................................................................ 9

Engine-control system ........................................................................................................................................ 10

DC controller ...................................................................................................................................... 11

Motors ............................................................................................................................. 12

Fans ................................................................................................................................. 13

High-voltage power supply ............................................................................................ 14

Low-voltage power supply ............................................................................................. 15

Overcurrent/overvoltage protection ........................................................... 16

Voltage detection ......................................................................................... 16

Safety ............................................................................................................ 16

Sleep (power save) mode ............................................................................. 17

Low-voltage power supply functions .......................................................... 17

Fuser control ................................................................................................................... 18

Fuser temperature control ........................................................................... 19

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Fuser sleeve temperature protection .......................................................... 20

Fuser failure detection ................................................................................. 20

Pressure roller cleaning ............................................................................... 21

Ambient-temperature detection ................................................................. 21

Laser/scanner system ......................................................................................................................................... 22

Laser/scanner failure ........................................................................................................................ 23

Safety ................................................................................................................................................ 23

Image-formation system .................................................................................................................................... 24

Electrophotographic process ............................................................................................................ 26

Step 1: Primary charge (conditioning) ............................................................................ 27

Step 2: Laser-beam exposure (writing) .......................................................................... 27

Step 3: Developing .......................................................................................................... 28

Step 4: Transfer .............................................................................................................. 28

Step 5: Separation .......................................................................................................... 29

Step 6: Fusing .................................................................................................................. 29

Step 7: Drum cleaning ..................................................................................................... 30

Toner cartridge .................................................................................................................................. 31

Memory chip .................................................................................................................... 31

Cartridge presence and life detection ............................................................................ 31

Pickup, feed, and delivery system ...................................................................................................................... 33

Pickup-and-feed block ...................................................................................................................... 38

Tray 2 pickup ................................................................................................................... 39

Tray 2 paper-size detection and tray-present detection ............................ 40

Tray 1 pickup ................................................................................................................... 43

Tray 1 paper-presence detection ................................................................. 44

Feed speed control ......................................................................................................... 44

Skew-feed prevention .................................................................................................... 45

Paper-length detection .................................................................................................. 46

Paper-width detection .................................................................................................... 46

Fusing, reverse, and delivery block .................................................................................................. 47

Fusing .............................................................................................................................. 47

Pressure roller pressurization and depressurization control ....................................... 48

Reverse and delivery control .......................................................................................... 49

Face-down delivery ...................................................................................... 50

Face-up delivery ........................................................................................... 51

Output bin paper-full detection ................................................................... 52

Duplex block ...................................................................................................................................... 53

Duplex side registration adjustment operation ............................................................. 53

Jam detection .................................................................................................................................... 55

Optional paper feeders ........................................................................................................................................ 59

Paper-feeder pickup and feed components ..................................................................................... 62

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1x500-sheet paper feeder signal flow and component locations ................................ 62

1x500-sheet paper feeder with cabinet signal flow and component locations ........... 63

2,500-sheet high-capacity paper feeder signal flow and component locations .......... 65

Paper-size detection and tray-presence detection ......................................................................... 67

Paper feeder tray lift operation ........................................................................................................ 68

Trays 3 and 4 lift operation ............................................................................................ 68

Tray 5 lift operation ........................................................................................................ 69

Paper feeder jam detection .............................................................................................................. 70

Scanning/image capture system ........................................................................................................................ 73

Scanner .............................................................................................................................................. 73

Document feed system ..................................................................................................................... 73

Sensors in the document feeder .................................................................................... 73

Document feeder paper path ......................................................................................... 75

Document feeder simplex operation ............................................................................. 75

Document feeder e-duplex operation ............................................................................ 76

Front-side and back-side background selector ............................................................. 77

Deskew operation ........................................................................................................... 78

Document feeder hinges ................................................................................................ 79

Stapling mailbox .................................................................................................................................................. 81

Motor control ..................................................................................................................................... 83

Failure detection ............................................................................................................. 84

Delivery operation .......................................................................................................... 84

Staple operation ........................................................................................... 86

Stapler .......................................................................................................... 91

Output bin 3 lift operation ........................................................................... 92

Stacker mode .................................................................................................................................... 93

Mailbox/job separator mode ............................................................................................................ 93

Jam detection .................................................................................................................................... 94

Automatic delivery ............................................................................................................................ 96

2 Solve problems ........................................................................................................................................... 97

Solve problems checklist ..................................................................................................................................... 98

Menu map .......................................................................................................................................................... 101

Current settings pages ...................................................................................................................................... 101

Event log ............................................................................................................................................................ 101

Pre-boot menu options ..................................................................................................................................... 103

Remote Admin ................................................................................................................................. 110

Required software and network connection ................................................................ 110

Telnet client ................................................................................................ 111

Network connection ................................................................................... 112

Connect a remote connection ...................................................................................... 112

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Disconnect a remote connection .................................................................................. 117

Troubleshooting process .................................................................................................................................. 119

Determine the problem source ....................................................................................................... 119

Troubleshooting flowchart .......................................................................................... 119

Power subsystem ............................................................................................................................ 120

Power-on checks .......................................................................................................... 120

Power-on troubleshooting overview ......................................................... 120

Scanning subsystem ....................................................................................................................... 124

Control panel checks ....................................................................................................................... 124

Control panel diagnostic flowcharts ............................................................................ 127

Touchscreen black, white, or dim (no image) ............................................ 128

Touchscreen is slow to respond or requires multiple presses to

respond ....................................................................................................... 129

Touchscreen has an unresponsive zone .................................................... 130

No control panel sound .............................................................................. 131

Home button is unresponsive .................................................................... 132

Hardware integration pocket (HIP) is not functioning (control panel

functional) .................................................................................................. 133

Tools for troubleshooting ................................................................................................................................. 134

Individual component diagnostics .................................................................................................. 134

LED diagnostics ............................................................................................................. 134

Understand lights on the formatter .......................................................... 134

Engine diagnostics ........................................................................................................ 139

Defeating interlocks ................................................................................... 139

Disable cartridge check .............................................................................. 140

Engine test button ...................................................................................... 140

Paper path test ............................................................................................................. 141

Paper path sensors test ............................................................................................... 141

Manual sensor tests and tray/bin sensor tests ........................................................... 143

Manual sensor tests ................................................................................... 143

Tray/bin manual sensor test ...................................................................... 148

Print/stop test .............................................................................................................. 150

Component tests .......................................................................................................... 150

Component test (special-mode test) ......................................................... 150

Scanner tests ................................................................................................................ 153

Scanner tests .............................................................................................. 153

Diagrams ......................................................................................................................................... 155

Block diagrams ............................................................................................................. 155

Sensors ....................................................................................................... 155

Switches (product base) ............................................................................. 159

Solenoids (product base) ........................................................................... 160

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Clutch (product base) ................................................................................. 161

Motors ......................................................................................................... 162

Fans (product base) .................................................................................... 166

Main assemblies ......................................................................................... 167

Main PCAs (product base) ........................................................................... 174

Rollers (product base) ................................................................................ 175

DC controller connections ............................................................................................ 176

Scanner controller board (SBC) connectors ................................................................. 178

1x500-sheet feeder, 1x500-sheet feeder with cabinet, and 2,500-sheet high-

capacity feeder connectors .......................................................................................... 179

Stapling mailbox connectors ........................................................................................ 180

General timing chart ..................................................................................................... 182

General circuit diagrams ............................................................................................... 184

Internal print-quality test pages .................................................................................................... 189

Print quality troubleshooting pages ............................................................................ 189

Fuser test page ............................................................................................................. 192

Cleaning page ............................................................................................................... 193

Enable and configure auto cleaning .......................................................... 193

Print configuration page ............................................................................................... 194

Configuration page ..................................................................................... 194

HP embedded Jetdirect page ..................................................................... 196

Finding important information on the configuration pages ..................... 197

Print quality troubleshooting tools ................................................................................................ 198

Print quality troubleshooting tools: repetitive defects ruler ...................................... 198

Control-panel menus ...................................................................................................................... 199

Administration menu .................................................................................................... 199

Reports menu ............................................................................................. 199

General Settings menu ............................................................................... 201

Copy Settings menu ................................................................................... 206

Scan/Digital Send Settings menu .............................................................. 214

Fax Settings menu (fax models only) ........................................................ 224

General Print Settings menu ...................................................................... 234

Default Print Options menu ....................................................................... 237

Display Settings menu ............................................................................... 239

Manage Supplies menu .............................................................................. 241

Manage Trays menu ................................................................................... 244

Network Settings menu ............................................................................. 246

Troubleshooting menu ............................................................................... 257

Device Maintenance menu ............................................................................................ 259

Backup/Restore menu ............................................................................... 259

Calibration/Cleaning menu ........................................................................ 260

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USB Firmware Upgrade menu .................................................................... 262

Service menu .............................................................................................. 262

Control panel message document (CPMD) ..................................................................................... 263

Control-panel message types ...................................................................................... 263

Control-panel messages and event log entries ........................................................... 263

10.XX.YZ Error Messages ........................................................................... 263

11.XX.YZ Error Messages ........................................................................... 266

13.XX.YZ Error Messages ........................................................................... 267

13.XX.YZ Error Messages ........................................................................... 293

30.XX.YZ Error Messages ........................................................................... 293

31.XX.YZ Error Messages ........................................................................... 300

32.XX.YX and 33.XX.YZ Error Messages .................................................... 306

40.XX.YZ Error Messages ........................................................................... 312

41.XX.YZ Error Messages ........................................................................... 314

42.XX.YZ Error Messages ........................................................................... 321

44.XX.XX Error Messages ........................................................................... 321

47.XX.XX Error Messages ........................................................................... 323

48.XX.YY Error Messages ........................................................................... 325

49.XX.YY Error Messages ........................................................................... 326

50.WX.YZ Error Messages .......................................................................... 326

51.XX.YZ, 52.XX.YZ Error Messages .......................................................... 328

54.XX.YZ Error Messages ........................................................................... 329

55.XX.YZ, 56.XX.YZ Error Messages .......................................................... 330

57.XX.YZ Error Messages ........................................................................... 331

58.XX.YZ Error Messages ........................................................................... 333

59.XX.YZ Error Messages ........................................................................... 335

60.00.0Y, 62.00.00 Error Messages .......................................................... 337

65.X0.AZ Error Messages ........................................................................... 339

66.WX.YZ Error Messages .......................................................................... 339

70.XX.YY Error Messages ........................................................................... 343

80.XX.YY, 82.XX.YY Error Messages .......................................................... 343

98.0X.0Y Error Messages ........................................................................... 344

99.XX.YY Error Messages ........................................................................... 345

Alpha Error Messages ................................................................................. 352

Control panel: event log messages ................................................................................................ 386

Print or view an event log ............................................................................................. 387

Clear the event log ........................................................................................................ 387

Clear jams .......................................................................................................................................................... 388

Jam sensor locations ...................................................................................................................... 388

Paper path sensor locations ......................................................................................... 388

Jam locations .................................................................................................................................. 392

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Auto-navigation for clearing jams .................................................................................................. 392

Experiencing frequent or recurring paper jams? ............................................................................ 392

Clear jams in the document feeder ................................................................................................. 394

Clear jams in Tray 1 ......................................................................................................................... 398

Clear jams in Tray 2, 3, or 4 ............................................................................................................. 401

Clear jams in the 1,500-sheet high-capacity input tray (Tray 5) ................................................... 403

Clear jams in the right door ............................................................................................................. 406

Clear jams in the lower-right door .................................................................................................. 407

Clear jams in the duplexer and fuser .............................................................................................. 408

Clear jams under the top cover and in the registration area ......................................................... 413

Clear jams in the output bin ............................................................................................................ 416

Clear jams in the stapling mailbox accessory ................................................................................ 417

Clear staple jams in the stapling mailbox accessory ..................................................................... 419

Change jam recovery ....................................................................................................................... 423

Paper feeds incorrectly or becomes jammed ................................................................................................... 424

The product does not pick up paper ............................................................................................... 424

The product picks up multiple sheets of paper .............................................................................. 424

The document feeder jams, skews, or picks up multiple sheets of paper .................................... 425

Prevent paper jams ......................................................................................................................... 425

Use manual print modes ................................................................................................................................... 426

Solve image quality problems .......................................................................................................................... 429

Image defects table ........................................................................................................................ 429

Clean the product .............................................................................................................................................. 439

Print a cleaning page ...................................................................................................................... 439

Check the scanner glass for dirt or smudges ................................................................................. 440

Clean the pickup rollers and separation pad in the document feeder ........................................... 442

Clean the pickup, feed, and separation rollers in the 1x500-sheet paper-feeder and 1x500-

sheet paper-feeder with storage cabinet ...................................................................................... 444

Clean the pickup, feed, and separation rollers in the 2,500-sheet high-capacity feeder (HCI) .... 445

Solve performance problems ............................................................................................................................ 446

Solve connectivity problems ............................................................................................................................. 447

Solve USB connection problems ..................................................................................................... 447

Solve wired network problems ....................................................................................................... 447

Poor physical connection ............................................................................................. 447

The computer is using the incorrect IP address for the product ................................. 447

The computer is unable to communicate with the product ........................................ 448

The product is using incorrect link and duplex settings for the network ................... 448

New software programs might be causing compatibility problems ........................... 448

The computer or workstation might be set up incorrectly .......................................... 448

The product is disabled, or other network settings are incorrect ............................... 448

Service mode functions ..................................................................................................................................... 449

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Service menu ................................................................................................................................... 449

Product resets ................................................................................................................................. 452

Restore factory-set defaults ........................................................................................ 452

Restore the service ID ................................................................................................... 453

Product cold reset ........................................................................................................ 453

Format Disk and Partial Clean functions ........................................................................................ 454

Active and repository firmware locations .................................................................... 454

Partial Clean .................................................................................................................. 454

Execute a Partial Clean ............................................................................... 455

Format Disk ................................................................................................................... 455

Execute a Format Disk ................................................................................ 456

Solve fax problems ............................................................................................................................................ 457

Checklist for solving fax problems ................................................................................................. 457

What type of phone line are you using? ....................................................................... 457

Are you using a surge-protection device? .................................................................... 457

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

machine? ....................................................................................................................... 457

Does your phone line have a call-waiting feature? ..................................................... 457

Check fax accessory status .......................................................................................... 458

General fax problems ...................................................................................................................... 459

The fax failed to send ................................................................................................... 459

An Out of Memory status message displays on the product control panel ................ 459

Print quality of a photo is poor or prints as a gray box ............................................... 459

You touched the Stop button to cancel a fax, but the fax was still sent ..................... 459

No fax address book button displays ........................................................................... 459

Not able to locate the Fax settings in HP Web Jetadmin ............................................. 459

The header is appended to the top of the page when the overlay option is enabled 459

A mix of names and numbers is in the recipients box ................................................. 459

A one-page fax prints as two pages ............................................................................. 460

A document stops in the document feeder in the middle of faxing ............................ 460

The volume for sounds coming from the fax accessory is too high or too low .......... 460

Use Fax over VoIP networks ........................................................................................................... 460

Problems with receiving faxes ........................................................................................................ 461

Problems with sending faxes ......................................................................................................... 463

Fax error messages on the product control panel ......................................................................... 464

Send-fax messages ...................................................................................................... 465

Receive-fax messages .................................................................................................. 466

Service settings ............................................................................................................................... 467

Settings in the Troubleshooting menu ........................................................................ 467

Firmware upgrades ........................................................................................................................................... 468

Determine the installed revision of firmware ................................................................................ 469

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Perform a firmware upgrade .......................................................................................................... 470

HP Embedded Web Server ............................................................................................ 470

USB flash drive (Pre-boot menu) ................................................................................. 470

USB flash drive (control-panel menu) .......................................................................... 471

Appendix A Product specifications ................................................................................................................. 473

Product dimensions ........................................................................................................................................... 474

Product space requirements ............................................................................................................................. 475

Power consumption, electrical specifications, and acoustic emissions .......................................................... 476

Environmental specifications ............................................................................................................................ 476

Certificate of Volatility ...................................................................................................................................... 477

Index ........................................................................................................................................................... 479

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List of tables

Table 1-1 Sequence of operation (product) ......................................................................................................................... 4

Table 1-2 Sequence of operation (scanner) ......................................................................................................................... 5

Table 1-3 Formatter hardware components ....................................................................................................................... 6

Table 1-4 Motors ................................................................................................................................................................ 12

Table 1-5 Fans .................................................................................................................................................................... 13

Table 1-6 Converted DC voltages ....................................................................................................................................... 16

Table 1-7 Low-voltage power supply functions ................................................................................................................ 17

Table 1-8 Fuser components ............................................................................................................................................. 18

Table 1-9 Sensors ............................................................................................................................................................... 34

Table 1-10 Motors, clutch, and solenoids .......................................................................................................................... 35

Table 1-11 Switches ........................................................................................................................................................... 36

Table 1-12 Tray 2 media-size detection switch components ........................................................................................... 40

Table 1-13 Feed speed control ........................................................................................................................................... 44

Table 1-14 Paper-width detection ..................................................................................................................................... 46

Table 1-15 Jams that the product detects ......................................................................................................................... 56

Table 1-16 Pickup and feed components (1x500-sheet paper feeder) ............................................................................ 62

Table 1-17 Pickup and feed components (1x500-sheet paper feeder with cabinet) ....................................................... 64

Table 1-18 Pickup and feed components (2,500-sheet high-capacity paper feeder) ...................................................... 66

Table 1-19 Paper-size detection and tray-presence detection (1 x 500-sheet paper feeder and 1x500-sheet

paper feeder with cabinet) ..................................................................................................................................................... 67

Table 1-20 Paper-size detection and tray-presence detection (2,500-sheet high-capacity paper feeder) ................... 67

Table 1-21 Document feeder sensors ................................................................................................................................ 74

Table 1-22 Document feeder paper path ........................................................................................................................... 75

Table 1-23 Document feeder deskew features ................................................................................................................. 78

Table 1-24 Motor control (stapling mailbox) ..................................................................................................................... 83

Table 1-25 Delivery components (stapling mailbox) ........................................................................................................ 85

Table 2-1 Pre-boot menu options (1 of 7) ....................................................................................................................... 103

Table 2-2 Pre-boot menu options (2 of 7) ....................................................................................................................... 104

Table 2-3 Pre-boot menu options (3 of 7) ....................................................................................................................... 105

Table 2-4 Pre-boot menu options (4 of 7) ....................................................................................................................... 106

Table 2-5 Pre-boot menu options (5 of 7) ....................................................................................................................... 107

Table 2-6 Pre-boot menu options (6 of 7) ....................................................................................................................... 108

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Table 2-7 Pre-boot menu options (7 of 7) ....................................................................................................................... 109

Table 2-8 Troubleshooting flowchart .............................................................................................................................. 119

Table 2-9 Control panel diagnostic functions .................................................................................................................. 124

Table 2-10 Connectivity LED, product initialization ........................................................................................................ 135

Table 2-11 Connectivity LED, product operational .......................................................................................................... 137

Table 2-12 Paper-path sensors diagnostic tests ............................................................................................................ 141

Table 2-13 Manual sensor diagnostic tests ..................................................................................................................... 144

Table 2-14 Tray/bin manual sensors ............................................................................................................................... 148

Table 2-15 Component test details ................................................................................................................................. 151

Table 2-16 Sensors (product base) .................................................................................................................................. 155

Table 2-17 Sensors (1x500-sheet paper feeder and 1x500-sheet paper feeder with cabinet) .................................... 156

Table 2-18 Sensors (2,500-sheet high-capacity feeder) (HCI) ........................................................................................ 157

Table 2-19 Sensors (SSMBM) ........................................................................................................................................... 158

Table 2-20 Switches (product base) ................................................................................................................................ 159

Table 2-21 Solenoids (product base) ............................................................................................................................... 160

Table 2-22 Clutch (product base) ..................................................................................................................................... 161

Table 2-23 Motors (product base) ................................................................................................................................... 162

Table 2-24 Motors (1 x 500-sheet paper feeder) ............................................................................................................ 163

Table 2-25 Motors (1x500-sheet and 3 x 500-sheet paper deck) .................................................................................. 163

Table 2-26 Motors (1x500-sheet and 3 x 500-sheet paper deck) .................................................................................. 164

Table 2-27 Motors (SSMBM) ............................................................................................................................................. 165

Table 2-28 Fans (product base) ....................................................................................................................................... 166

Table 2-29 Main assemblies (product base; 1 of 2) ......................................................................................................... 167

Table 2-30 Main assemblies (product base; 2 of 2) ......................................................................................................... 168

Table 2-31 Main assemblies (1 x 500-sheet paper feeder) ............................................................................................. 169

Table 2-32 Main assemblies (1x500-sheet paper feeder with cabinet) ......................................................................... 170

Table 2-33 Main assemblies (2,500-sheet high-capacity feeder) (HCI) .......................................................................... 171

Table 2-34 Main assemblies (SSMBM; 1 of 2) .................................................................................................................. 172

Table 2-35 Main assemblies (SSMBM; 2 of 2) .................................................................................................................. 173

Table 2-36 Main PCAs (product base) .............................................................................................................................. 174

Table 2-37 Rollers (product base) ................................................................................................................................... 175

Table 2-38 DC controller connectors ............................................................................................................................... 176

Table 2-39 Scanner controller board (SCB) connectors .................................................................................................. 178

Table 2-40 1x500-sheet feeder, 1x500-sheet feeder with cabinet, and 2,500-sheet high-capacity feeder

connectors ........................................................................................................................................................................... 179

Table 2-41 Stapling mailbox connectors ......................................................................................................................... 180

Table 2-42 Important information on the configuration pages ...................................................................................... 197

Table 2-43 Reports menu ................................................................................................................................................. 199

Table 2-44 General Settings menu .................................................................................................................................. 201

Table 2-45 Copy Settings menu ....................................................................................................................................... 206

Table 2-46 Scan/Dig

ital Send Settings menu .................................................................................................................. 214

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Table 2-47 Fax Settings menu (fax models only) ............................................................................................................ 224

Table 2-48 General Print Settings menu ......................................................................................................................... 234

Table 2-49 Default Print Options menu ........................................................................................................................... 237

Table 2-50 Display Settings menu ................................................................................................................................... 239

Table 2-51 Manage Supplies menu .................................................................................................................................. 241

Table 2-52 Manage Trays menu ....................................................................................................................................... 244

Table 2-53 Network Settings menu ................................................................................................................................. 246

Table 2-54 Embedded Jetdirect Menu ............................................................................................................................. 246

Table 2-55 Troubleshooting menu .................................................................................................................................. 257

Table 2-56 Backup/Restore menu ................................................................................................................................... 260

Table 2-57 Calibration/Cleaning menu ............................................................................................................................ 260

Table 2-58 Sample event log page .................................................................................................................................. 386

Table 2-59 Sensors (product base) .................................................................................................................................. 388

Table 2-60 1x500-sheet paper-feeder and 1x500-sheet paper-feeder with storage cabinet sensors and switches

.............................................................................................................................................................................. 389

Table 2-61 2,500-sheet high-capacity feeder (HCI) sensors and switches .................................................................... 390

Table 2-62 3-bin stapling mailbox accessory sensors .................................................................................................... 391

Table 2-63 Print modes

under the Adjust Paper Types submenu ................................................................................. 427

Table 2-64 Print modes under the Optimize submenu ................................................................................................... 427

Table 2-65 Image defects table ....................................................................................................................................... 429

Table 2-66 Solve performance problems ........................................................................................................................ 446

Table 2-67 Send-fax messages ....................................................................................................................................... 465

Table 2-68 Receive-fax messages ................................................................................................................................... 466

Table A-1 Physical specifications ..................................................................................................................................... 474

Table A-2 Accessory dimensions ...................................................................................................................................... 474

Table A-3 Product space requirements ........................................................................................................................... 475

Table A-4 Operating-environment specifications ........................................................................................................... 476

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List of figures

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

Figure 1-2 System block diagram ........................................................................................................................................ 3

Figure 1-3 Engine control system block diagram .............................................................................................................. 10

Figure 1-4 DC controller block diagram ............................................................................................................................. 11

Figure 1-5 Motors ............................................................................................................................................................... 12

Figure 1-6 Fans ................................................................................................................................................................... 13

Figure 1-7 High-voltage power supply .............................................................................................................................. 14

Figure 1-8 Low-voltage power supply circuit .................................................................................................................... 15

Figure 1-9 Fuser components ............................................................................................................................................ 18

Figure 1-10 Fuser circuit ..................................................................................................................................................... 19

Figure 1-11 Laser/scanner ................................................................................................................................................. 22

Figure 1-12 Image-formation system components .......................................................................................................... 24

Figure 1-13 Image-formation system motor control ........................................................................................................ 25

Figure 1-14 Stages of image-formation ............................................................................................................................ 26

Figure 1-15 1. Primary charge (conditioning) .................................................................................................................... 27

Figure 1-16 2. Laser-beam exposure (writing) .................................................................................................................. 27

Figure 1-17 3. Developing .................................................................................................................................................. 28

Figure 1-18 4. Transfer ....................................................................................................................................................... 28

Figure 1-19 5. Separation ................................................................................................................................................... 29

Figure 1-20 6. Fusing .......................................................................................................................................................... 29

Figure 1-21 7. Drum cleaning ............................................................................................................................................. 30

Figure 1-22 Toner Cartridge ............................................................................................................................................... 31

Figure 1-23 Pickup, feed, and delivery system .................................................................................................................. 33

Figure 1-24 Sensor locations ............................................................................................................................................. 34

Figure 1-25 Motor, clutch, and solenoid locations ............................................................................................................ 35

Figure 1-26 Switch locations .............................................................................................................................................. 36

Figure 1-27 Pickup-and-feed block ................................................................................................................................... 38

Figure 1-28 Tray 2 pickup ................................................................................................................................................... 39

Figure 1-29 Tray 2 lift operation ........................................................................................................................................ 41

Figure 1-30 Multiple-feed prevention ................................................................................................................................ 42

Figure 1-31 Tray 1 pickup ................................................................................................................................................... 43

Figure 1-32 Skew-feed prevention .................................................................................................................................... 45

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Figure 1-33 Fusing, reverse, and delivery block ................................................................................................................ 47

Figure 1-34 Pressure roller pressurization and depressurization control ....................................................................... 48

Figure 1-35 Reverse and delivery control .......................................................................................................................... 49

Figure 1-36 Face-down delivery ........................................................................................................................................ 50

Figure 1-37 Face-up delivery ............................................................................................................................................. 51

Figure 1-38 Output bin paper-full detection ..................................................................................................................... 52

Figure 1-39 Duplex block ................................................................................................................................................... 53

Figure 1-40 Duplex side registration adjustment operation ............................................................................................. 54

Figure 1-41 Jam detection sensors .................................................................................................................................... 56

Figure 1-42 1x500-sheet paper feeder ............................................................................................................................. 59

Figure 1-43 1x500-sheet paper feeder with cabinet ........................................................................................................ 60

Figure 1-44 2,500-sheet high-capacity paper feeder ....................................................................................................... 61

Figure 1-45 Signal flow for the 1x500-sheet paper feeder controller ............................................................................. 62

Figure 1-46 Pickup and feed components (1x500-sheet paper feeder) ........................................................................... 62

Figure 1-47 Signal flow for the 1x500 paper feeder with cabinet controller ................................................................... 63

Figure 1-48 Pickup and feed components (1x500-sheet paper feeder with cabinet) ...................................................... 64

Figure 1-49 Signal flow for the 2,500-sheet high-capacity paper feeder controller ....................................................... 65

Figure 1-50 Pickup and feed components (2,500-sheet high-capacity paper feeder) .................................................... 65

Figure 1-51 Trays 3 and 4 paper feeder lift operation ...................................................................................................... 68

Figure 1-52 Tray 5 paper feeder lift operation .................................................................................................................. 69

Figure 1-53 1x500-sheet paper feeder media feed sensor .............................................................................................. 70

Figure 1-54 1x500-sheet paper feeder with cabinet media feed sensor ......................................................................... 71

Figure 1-55 2,500-sheet high-capacity paper feeder media feed sensors ...................................................................... 72

Figure 1-56 Document feeder sensors .............................................................................................................................. 74

Figure 1-57 Document feeder paper path ......................................................................................................................... 75

Figure 1-58 Document feeder deskew features ................................................................................................................ 78

Figure 1-59 Document feeder open (book mode) ............................................................................................................. 79

Figure 1-60 Document feeder open (60º to 80º) ............................................................................................................... 80

Figure 1-61 Stapling mailbox ............................................................................................................................................. 81

Figure 1-62 Signal flow for the stapling mailbox .............................................................................................................. 82

Figure 1-63 Stapling mailbox motors ................................................................................................................................ 83

Figure 1-64 Delivery components (stapling mailbox) ....................................................................................................... 85

Figure 1-65 Stapling mailbox stapler operation ................................................................................................................ 87

Figure 1-66 Stapling mailbox stapler operation ................................................................................................................ 88

Figure 1-67 Stapling mailbox stapler operation ................................................................................................................ 89

Figure 1-68 Stapling mailbox stapler operation ................................................................................................................ 90

Figure 1-69 Stapling mailbox sensors for the stapler ....................................................................................................... 91

Figure 1-70 Stapling mailbox sensors for output bin 3 lift operation .............................................................................. 92

Figure 1-71 Stapling mailbox sensors for stacker mode .................................................................................................. 93

Figure 1-72 Stapling mailbox sensors for mail

Figure 1-73 Stapling mailbox sensors for jam detection .................................................................................................. 95

box/jam separation ................................................................................. 94

xx ENWW

Figure 2-1 Open the Control Panel ................................................................................................................................... 111

Figure 2-2 Turn Windows features on or off .................................................................................................................... 111

Figure 2-3 Enable the telnet client feature ..................................................................................................................... 112

Figure 2-4 Select the +3:Administrator item ................................................................................................................... 113

Figure 2-5 Select the +A:Remote Admin item ................................................................................................................. 113

Figure 2-6 Select the 1:Start Telnet item ........................................................................................................................ 113

Figure 2-7 Telnet connecting message ............................................................................................................................ 113

Figure 2-8 Telnet error message ..................................................................................................................................... 114

Figure 2-9 Telnet server function initialized ................................................................................................................... 114

Figure 2-10 Open a command window ............................................................................................................................ 115

Figure 2-11 Start a telnet session .................................................................................................................................... 115

Figure 2-12 Establish a telnet connection ....................................................................................................................... 115

Figure 2-13 Enter the PIN ................................................................................................................................................. 116

Figure 2-14 Remote Admin window ................................................................................................................................. 116

Figure 2-15 Access the administrator menu ................................................................................................................... 117

Figure 2-16 Access the remote admin menu ................................................................................................................... 117

Figure 2-17 Terminate the telnet connection ................................................................................................................. 118

Figure 2-18 Touchscreen blank, white, or dim (no image) .............................................................................................. 128

Figure 2-19 Touchscreen is slow to respond or requires multiple presses to respond ................................................. 129

Figure 2-20 Touchscreen has an unresponsive zone ...................................................................................................... 130

Figure 2-21 No control panel sound ................................................................................................................................ 131

Figure 2-22 Home button is unresponsive ...................................................................................................................... 132

Figure 2-23 Hardware integration pocket (HIP) is not functioning (control panel functional) ...................................... 133

Figure 2-24 Defeating interlocks ..................................................................................................................................... 139

Figure 2-25 Engine test button ........................................................................................................................................ 140

Figure 2-26 Sensors (product base) ................................................................................................................................. 155

Figure 2-27 Sensors (1x500-sheet paper feeder and 1x500-sheet paper feeder with cabinet) ................................... 156

Figure 2-28 Sensors (2,500-sheet high-capacity feeder) (HCI) ...................................................................................... 157

Figure 2-29 Sensors (SSMBM) .......................................................................................................................................... 158

Figure 2-30 Switches (product base) ............................................................................................................................... 159

Figure 2-31 Solenoids (product base) .............................................................................................................................. 160

Figure 2-32 Clutch (product base) ................................................................................................................................... 161

Figure 2-33 Motors (product base) .................................................................................................................................. 162

Figure 2-34 Motors (1 x 500-sheet paper feeder) ........................................................................................................... 163

Figure 2-35 Motors (1x500-sheet paper feeder) ............................................................................................................ 163

Figure 2-36 Motors (2,500-sheet high-capacity feeder) (HCI) ........................................................................................ 164

Figure 2-37 Motors (SSMBM) ............................................................................................................................................ 165

Figure 2-38 Fans (product base) ...................................................................................................................................... 166

Figure 2-39 Main assemblies (product base; 1 of 2) ....................................................................................................... 167

Figure 2-40 Main assemblies (product base; 2 of 2) ....................................................................................................... 168

Figure 2-41 Main assemblies (1x500-sheet paper feeder) ............................................................................................. 169

ENWW xxi

Figure 2-42 Main assemblies (1x 500-sheet paper feeder with cabinet) ....................................................................... 170

Figure 2-43 Main assemblies (2,500-sheet high-capacity feeder) (HCI) ........................................................................ 171

Figure 2-44 Main assemblies (SSMBM; 1 of 2) ................................................................................................................. 172

Figure 2-45 Main assemblies (SSMBM; 2 of 2) ................................................................................................................. 173

Figure 2-46 Main PCAs (product base) ............................................................................................................................. 174

Figure 2-47 Rollers (product base) .................................................................................................................................. 175

Figure 2-48 DC controller PCA connectors ....................................................................................................................... 176

Figure 2-49 Scanner controller board (SCB) connectors ................................................................................................. 178

Figure 2-50 1x500-sheet feeder, 1x500-sheet feeder with cabinet, and 2,500-sheet high-capacity feeder

connectors ........................................................................................................................................................................... 179

Figure 2-51 Stapling mailbox connectors ........................................................................................................................ 180

Figure 2-52 General timing chart (1 of 2) ........................................................................................................................ 182

Figure 2-53 General timing chart (2 of 2) ........................................................................................................................ 183

Figure 2-54 General circuit diagram (product base) (1 of 2) ........................................................................................... 184

Figure 2-55 General circuit diagram (product base) (2 of 2) ........................................................................................... 185

Figure 2-56 General circuit diagram 1x500-sheet feeder, 1x500-sheet feeder with cabinet, and 2,500-sheet

high-capacity feeder (HCI) ................................................................................................................................................... 186

Figure 2-57 General circuit diagram for the stapling mailbox ........................................................................................ 187

Figure 2-58 General circuit diagram for the envelope feeder ......................................................................................... 188

Figure 2-59 Print-quality troubleshooting procedure page ........................................................................................... 190

Figure 2-60 Black print-quality troubleshooting page .................................................................................................... 191

Figure 2-61 Configuration page ....................................................................................................................................... 195

Figure 2-62 HP embedded Jetdirect page ....................................................................................................................... 196

Figure 2-63 Removing paper Stuck in Duplex re-feed path. ........................................................................................... 280

Figure 2-64 Jam detection sensors .................................................................................................................................. 281

Figure 2-65 Opening to the registration assembly ......................................................................................................... 282

Figure 2-66 Paper feed assembly belt ............................................................................................................................. 288

Figure 2-67 Sample event log .......................................................................................................................................... 386

Figure 2-68 Sensors (product base) ................................................................................................................................. 388

Figure 2-69 1x500-sheet paper-feeder and 1x500-sheet paper-feeder with storage cabinet sensors and switches

.............................................................................................................................................................................. 389

Figure 2-70 2,500-sheet high-capacity feeder (HCI) sensors and switches ................................................................... 390

Figure 2-71 Stapling mailbox sensors ............................................................................................................................. 391

Figure A-1 Product space requirements .......................................................................................................................... 475

Figure A-2 Certificate of Volatility 1 of 2) ........................................................................................................................ 477

Figure A-3 Certificate of Volatility (2 of 2) ....................................................................................................................... 478

xxii ENWW

1 Theory of operation

●

Basic operation

●

Formatter-control system

●

Engine-control system

●

Laser/scanner system

●

Image-formation system

●

Pickup, feed, and delivery system

●

Optional paper feeders

●

Scanning/image capture system

●

Stapling mailbox

ENWW 1

Basic operation

/SC

SYS

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 power supply and the DC controller

●

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 pickup-and-feed system, which uses a system of rollers and belts to transport the paper through the product

●

The option system, which controls the optional paper feeders

●

The scanner system, which scans data and sends it to the formatter for copying or for sending to email

Figure 1-1 Relationship between the main product systems

LASER/SCANNER SYSTEM

LASER

ANNER SYSTEM

IMAGE-FORMATION SYSTEM

ENGINE CONTROL

ENGINE CONTR

SYSTEM

TEM

The interconnect board (ICB) provides connections from the formatter to the following components:

●

DC controller (DCC)

●

Scanner control board (SCB)

●

Control panel, easy-access USB port, and USB hardware integration pocket through a USB cable

PICKUP-AND-FEED SYSTEM

OPTION

PTI

ANNE

SCANNER

The formatter receives +5 volts from the low-voltage power supply (LVPS).

The document feeder/scanner receives +24 volts from the scanner power supply, which is powered by an AC line from the LVPS.

2 Chapter 1 Theory of operation ENWW

The stapling mailbox receives +24 volts from the LVPS through a line in the JetLink cable connecting the stapling mailbox to the product.

Figure 1-2 System block diagram

Control Panel Assembly Contains

Sensors &LEDs

SAT ADF Asset

A4 E-Dupl ex CIS SCANNER MODULE

Scanner

Timing

Scanner Tub

LED

Driver

Walkup USB, HIP Module and

J17

UPS

CIRCUIT

Driver &P/S

+3.3V

+6.5V

Timing

Generator

(x3 or x4)

ADF DC Motors

FB DC Motor

LED

Driver

Timing

A4 Carriage

ADF SENSORS

ADF MOTOR CONTROL

FLATBED SENSORS

Sensors

FLATBED MOTOR

J19

CONTROL

NVRAM

DC Motor

LED

LVDS

LED

LVDS

LED

LVDS

LED

LVDS

LED

LVDS

LED

LVDS

SCANNER FFC

E-Duplex FFC

MICCI-2 channel A/B

MICCI-2 channel C

+5V

MICCI-2 channel E

Scanner ICB

LED

LVDS

LED

LVDS

J18

+3.3V AUX

DC Motor

Driver &P/S

MICCI-2 channel E

ADF & FB SENSORS

ULTASONIC PICK SIGNALS

+32V

24V to 32V

booster

Contr ol

Panel

Assembly

24V

HDMI Data Cable

“Sideband” 12X1 Wire bundle

12-pin SBHDMI

X16 PCI-e Connector

FormatterEngine ICB

+5VSW

+3.3V AUX

USB Switch Control

KEYS

Scanner Signals: 4 Diff Data Pairs& 4DiffClockPairs

E-Duplex Signals: 4 Diff Data Pairs & 4 Diff Clock Pairs

MICCI2 signals

I2C I/F

NVRAM

USB&MassStorage+5V

3.3VStandby

Video I/F

NuBus

Engine FFC

CAN I/F

nENG_ON

Formatter

Power Circuits

USB Data Lines

PCI-express Lines

20Pin

36pin

iPass

36pin

iPass

+3.3VUSW

Formatter+5V

5V +

USB/MS

Formatter +5V

ASIC

Engine

ENWW Basic operation 3

Sequence of operation (product)

A microprocessor on the DC controller controls the operating sequence of the product. The tables in this section describe the basic operating sequence, from when the product power is turned on until the final printed page is delivered to an output bin.

Table 1-1 Sequence of operation (product)

Period Duration Description

Waiting From the time the power is turned on, the door is

closed, or the product exits Sleep mode until the product is ready for printing

Standby From the end of the waiting sequence or the end of

the last rotation until the formatter receives a print command or the product is turned off

Initial rotation From the time the formatter receives a print

command until the paper enters the paper path

Print From the time the first sheet of paper enters the

paper path until the last sheet has passed through the fuser

Last rotation From the time the last sheet of paper exits the

fuser until the motors stop rotating

●

Detects the toner cartridge

●

Cleans the transfer roller

●

Heats the fuser sleeve in the fuser

●

Pressurizes the pressure roller in the fuser

●

The product is in the Ready state.

●

The product enters Sleep mode if the Sleep command is received from the formatter.

●

Stabilizes the photosensitive drum to prepare for printing

●

Prepares the laser/scanner unit

●

Forms the image on the photosensitive drum

●

Transfers the toner to the paper

●

Fuses the toner image onto the paper

●

Moves the last printed sheet into the output bin

●

Cleans the transfer roller

●

Stops the high-voltage power supply

●

Stops the laser/scanner unit

●

If the product receives another print command, the product returns to the initial rotation period when the last rotation is complete.

●

If the product does not receive another print command, the product returns to the standby period.

4 Chapter 1 Theory of operation ENWW

Sequence of operation (scanner)

Table 1-2 Sequence of operation (scanner)

Period Duration Description

Power on When the product is turned on

Initialization From the end of the power-on period until the

product is ready to scan or copy

Standby From the end of the initialization period until a

request for a scan

Scan From the time immediately following a request for

a scan until the scan is complete

●

Scanner motors rotate

●

Product checks the status of all the sensors

●

Scanner lamp illuminates

●

Optical scan head moves from its home position

●

Scanner calibrates

●

Optical scan head returns to its home position

●

Scanner and document feeder initialization complete

●

Scanner calibrates

●

Document feeder checks for paper in the input tray

●

The product enters Sleep mode if the Sleep command is received from the formatter.

●

Scan carriage rests in its home position

●

Scanner turns on

●

Scan start position adjusted

●

Scan performed

●

Data sent to the formatter

ENWW Basic operation 5

Formatter-control system

The formatter performs the following functions:

●

Controls Sleep mode

●

Receives and processes print data from the various product interfaces

●

Monitors control-panel functions and relays product-status information (through the control panel and the network or the bidirectional interface)

●

Develops and coordinates data placement and timing with the DC controller

●

Stores font information

●

Communicates with the host computer through the network or the bidirectional interface

The formatter receives a print job from the network or the bidirectional interface and separates it into image information and instructions that control the printing process. The DC controller synchronizes the imageformation system with the paper-input and -output systems, and then signals the formatter to send the print-image data.

The formatter also provides the electrical interface and mounting locations for one memory DIMM, the hard disk drive or solid state module memory device, and the optional analog fax accessory.

Formatter hardware

The formatter system includes the following components.

Table 1-3 Formatter hardware components

Component Function

Microprocessor Stores fonts and microprocessor control programs

Random access memory (RAM) Stores printing and font information and temporarily stores print-image data before sending it to

Nonvolatile random access memory (NVRAM)

USB Sends and receives data through a USB type B interface connector (connected to the host

Hard-disk drive (HDD)

Solid-state module (SSM)

Real time clock The Wake-up time feature uses this clock. It includes a battery to supply power when the product

HP Jetdirect Inside (JDI) JDI is an Ethernet interface that is part of the formatter.

Sleep mode

the product. RAM data is lost when the product is turned off.

Stores configuration information. NVRAM data is saved when the product is turned off.

computer)

Stores the firmware. A remote firmware upgrade process overwrites and upgrades the firmware on the HDD or SSM.

is turned off.

NOTE: In the General Settings menu (a submenu of the Administration menu), this item is termed Sleep Timer Settings.

6 Chapter 1 Theory of operation ENWW

This feature conserves power after the product has been idle for an adjustable period of time. When the product is in Sleep mode, the product retains all settings, downloaded fonts, and macros. The default setting is for Sleep mode to be enabled, and the product enters Sleep mode after a 30-minute idle time.

The product firmware uses a combination of timers and Sleep settings to control when the product enters a different state as well as what states the product will enter. The available states are listed below, in descending order, from using the most power to using the least power:

●

Active: The product control panel is fully illuminated. The power button light is illuminated.

●

Shallow suspend: The product control panel is dim and the content is grayed out, but is still readable. The power button light is illuminated.

●

Suspend: The product control panel is off (blacked out). The power button light blinks once every three seconds.

●

Deep suspend: The product control panel is off (blacked out). The power button light blinks once every three seconds. The control panel and power button appearance is the same in this state as the suspend state. However, the product is drawing less than 1 watt of power in the deep suspend state (as opposed to 6 watts of power in the suspend state).

●

Off: This state is entered by pressing the power button or removing power from the product. The power button light is not illuminated.

The product exits Sleep mode and enters the warm-up cycle when any of the following events occur:

●

The product receives a print job, valid data, or a PML or PJL command.

●

A control-panel button is pressed or the touchscreen is touched.

●

A cover or door is opened.

●

The engine-test switch is pressed.

●

A paper tray, other than Tray 1, is opened.

NOTE: If the product is in the deep suspend state, opening a paper tray will not cause the product to

exit Sleep mode.

NOTE: Product error messages override the Sleep message. The product enters Sleep mode at the

appropriate time, but the error message continues to appear.

TIP: When the product is in Sleep mode, the sub-power supply is off and the low-voltage power supply is

on. The scanner cannot be used when the product is in Sleep mode.

ENWW Formatter-control system 7

Input/output (I/O)

The product has three I/O interfaces:

●

Hi-Speed USB 2.0

●

10/100/1000 Ethernet LAN connection with IPv4 and IPv6

●

Easy-access USB printing (no computer required)

CPU

The formatter incorporates an 800 MHz processor.

Memory

This section describes the product random access memory (RAM).

Random access memory (RAM)

RAM on the formatter contains the page, I/O buffers, and the font storage area. It stores printing and font information received from the host system, and can also serve to temporarily store a full page of print-image data before the data is sent to the product. The contents of RAM are lost when the product is turned off.

NOTE: If the product encounters a problem when managing available memory, a clearable warning

message displays on the control-panel display.

Firmware

The hard-disk drive (HDD) or solid-state module (SSM) store the firmware. A remote firmware upgrade process overwrites and upgrades the firmware on the HDD or SSM.

Nonvolatile random access memory (NVRAM)

NVRAM on the formatter stores product and user configuration settings. The contents of NVRAM are retained when the product is turned off or disconnected.

Image Resolution Enhancement technology

NOTE: Resolution Enhancement technology (REt) settings that are sent from software programs or product

drivers override the control-panel settings.

The formatter contains circuitry for REt, which modifies the standard video dot data on its way to the DC controller to produce “smoothed” line edges. REt can be turned on or off from the control panel or from some software programs. The default setting is on.

REt produces print output with smooth angles, curves, and edges. All print resolutions, including FastRes 1200, benefit from using REt.

●

ProRes 1200: produces 1200 dpi printing for the best quality in-line art and graphic images.

●

FastRes 1200: produces 1200 dpi print quality for fast, high-quality printing of business text and graphics.

8 Chapter 1 Theory of operation ENWW

HP Memory Enhancement technology

The HP Memory Enhancement technology (MEt) effectively doubles the amount of standard memory through a variety of font- and data-compression methods.

NOTE: MEt is available only in when printing in printer command language (PCL) mode. It is not functional

when printing in PostScript (PS) mode.

Printer job language (PJL)

PJL is an integral part of product configuration, in addition to the standard printer command language (PCL) and PostScript (PS). With standard cabling, the product can use PJL to perform a variety of functions, such as these:

●

Two-way communication with the host computer through a network connection or a USB device port: The product can inform the host about the control-panel settings, and the control-panel settings

can be changed from the host.

●

Dynamic I/O switching: The product uses this switching to be configured with a host on each I/O. The product can receive data from more than one I/O simultaneously, until the I/O buffer is full. This can occur even when the product is offline.

●

Context-sensitive switching: The product can automatically recognize the personality (PS or PCL) of each job and configure itself to serve that personality.

●

Isolation of print environment settings from one print job to the next: For example, if a print job is sent to the product in landscape mode, the subsequent print jobs print in landscape only if they are formatted for landscape printing.

Printer management language (PML)

PML allows remote configuration of the product and status read-back from the product through the I/O ports.

Control panel

The control panel is a 20.3 cm (8 in) full-color SVGA with capacitive touchscreen and adjustable viewing angle. It includes an easy-access USB port for walk-up printing and a hardware integration pocket for thirdparty 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 M630z model has a QWERTY retractable keyboard beneath the control panel. The keys are mapped to a specific language in the same way the virtual keyboard on the product control panel is mapped. Selecting a different keyboard layout for the virtual keyboard remaps the keys on the physical keyboard to match the new settings.

Scanner interface

The formatter receives data from the scanner to produce copies and to send scanned data in email format.

ENWW Formatter-control system 9

Engine-control system

user co

The engine-control system receives commands from the formatter and interacts with the other main systems to coordinate all product functions. The engine-control system consists of the following components:

●

DC controller

●

Low-voltage power supply (LVPS)

●

High-voltage power supply (HVPS)

●

Fuser control

This system controls the laser/scanner, image-formation, and pickup-and-feed systems. The microprocessor on the DC controller controls the operating sequence of the product.

Figure 1-3 Engine control system block diagram

Engine-control system

DC controller

Laser/scanner system

Image-formation system

Formatter

Low-voltage power supply

igh-voltage power suppl

High-voltage power supply

Fuser control

ntrol

Pickup, feed and delivery

Pickup, feed and deliver

system

stem

Option

ptio

Scanner

canner

10 Chapter 1 Theory of operation ENWW

DC controller

use

sfe

’y

The DC controller controls the operation of the product and its components. The DC controller starts the product operation when the product power is turned on and the power supply sends DC voltage to the DC controller. After the product enters the standby period, the DC controller sends out various signals to operate motors, solenoids, and other product components based on the print command and image data that the host computer sends.

Figure 1-4 DC controller block diagram

Tran

Transfer roller

Cartridge

Fuser

artrid

r roller

Low-volta

Low-voltage

power supply

ower suppl

igh-volta

High-voltage

ower suppl

power supply

DC controller

Motor

tor

Fan

Solenoid

olenoi

Clutch

lutc

Photointerrupter

Sensor

ensor

Control panel

ontrol panel

Image scanner

Formatter

ICB

Switch

witc

Accessory

Accessor

Laser scanner ass’y

Laser scanner ass

Duplex unit

uplex uni

ENWW Engine-control system 11

+ 473 hidden pages