Lexmark MX910, MX911, MX912, XM9145, XM9155 Service Manual

MX91x and XM91x5

7421-036, -039, -236, -239, -436, -439

Service Manual

• Start diagnostics

• Maintenance

• Safety and notices

• Trademarks

• Index

September 16, 2014 www.lexmark.com

P/N 12G3391

7421

Product information

Product name:
Lexmark MX91x and XM91x5

Machine type:
7421

Model(s):
036, 039, 236, 239, 436, 439

Edition notice

September 16, 2014

The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATIONAL,
INC., PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of
express or implied warranties in certain transactions; therefore, this statement may not apply to you.

This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these
changes will be incorporated in later editions. Improvements or changes in the products or the programs described may be made at any
time.

References in this publication to products, programs, or services do not imply that the manufacturer intends to make these available in all
countries in which it operates. Any reference to a product, program, or service is not intended to state or imply that only that product,
program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any existing intellectual
property right may be used instead. Evaluation and verification of operation in conjunction with other products, programs, or services,
except those expressly designated by the manufacturer, are the user’s responsibility.

Trademarks

Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other
countries.

PCL® is a registered trademark of the Hewlett-Packard Company.
All other trademarks are the property of their respective owners.

© 2014 Lexmark International, Inc.
All rights reserved.

P/N 12G3391

7421

Table of contents

Product information.....................................................................................2

Edition notice...............................................................................................2

Notices and safety information..................................................................21

Laser notices............................................................................................................................................21

Safety information...................................................................................................................................24

Preface.......................................................................................................27

Service manual conventions....................................................................................................................27

Change history.........................................................................................................................................27

General information...................................................................................31

Paper and specialty media guide.............................................................................................................31

Using specialty media ....................................................................................................................................... 31

Paper guidelines ...............................................................................................................................................33

Supported paper sizes, types, and weights ...................................................................................................... 37

Data security notice.................................................................................................................................42

Tools required for service........................................................................................................................43

Diagnostic information...............................................................................45

Troubleshooting overview.......................................................................................................................45

Performing the initial troubleshooting check ................................................................................................... 45

Fixing print quality issues........................................................................................................................45

Initial print quality check .................................................................................................................................. 46

Gray background check .................................................................................................................................... 46

Blank pages check .............................................................................................................. ............................... 49

Solid black pages check.....................................................................................................................................50

Shadow images check .......................................................................................................................................52

Skewed print check ...........................................................................................................................................54

Streaked horizontal or vertical lines check .......................................................................................................55

Toner smear check............................................................................................................................................57

Toner specks check ...........................................................................................................................................58

Fixing image quality issues......................................................................................................................59

Initial image quality check ................................................................................................................................59

Flatbed scanner image quality check................................................................................................................60

Paper jams...............................................................................................................................................61

Avoiding jams....................................................................................................................................................62

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Understanding jam messages and locations.....................................................................................................62

200 paper jams ................................................................................................................................................. 64

202 paper jams ................................................................................................................................................. 71

23y paper jams ................................................................................................................................................. 79

241–242 paper jams .........................................................................................................................................82

243–245 paper jams .........................................................................................................................................93

28y paper jams ............................................................................................................................................... 107

Understanding the printer messages....................................................................................................119

Cartridge low [88.xy]....................................................................................................................................... 119

Cartridge nearly low [88.xy]............................................................................................................................ 119

Cartridge very low [88.xy]...............................................................................................................................119

Change [paper source] to [custom string] load [orientation] ......................................................................... 119

Change [paper source] to [custom type name] load [orientation]................................................................. 119

Change [paper source] to [paper size] load [orientation] .............................................................................. 119

Change [paper source] to [paper type] [paper size] load [orientation].......................................................... 120

Close door [x] ..................................................................................................................................................120

Complex page, some data may not have printed [39].................................................................................... 120

Configuration change, some held jobs were not restored [57] ......................................................................120

Defective flash detected [51].......................................................................................................................... 120

Disk full [62] .................................................................................................................................................... 120

Disk full, scan job canceled ............................................................................................................................. 121

Disk must be formatted for use in this device ................................................................................................121

Disk near full. Securely clearing disk space..................................................................................................... 121

Empty the hole punch box ..............................................................................................................................121

Error reading USB drive. Remove USB. ........................................................................................................... 121

Error reading USB hub. Remove hub. ............................................................................................................. 121

Fax memory full .............................................................................................................................................. 121

Fax partition inoperative. Contact system administrator............................................................................... 122

Fax server 'To Format' not set up. Contact system administrator..................................................................122

Fax Station Name not set up. Contact system administrator. ........................................................................ 122

Fax Station Number not set up. Contact system administrator. ....................................................................122

Incorrect paper size, open [paper source] [34] .............................................................................................. 122

Insert hole punch box .....................................................................................................................................122

Insert Tray [x].................................................................................................................................................. 123

Insufficient memory for Flash Memory Defragment operation [37] .............................................................. 123

Insufficient memory to collate job [37] .......................................................................................................... 123

Insufficient memory to support Resource Save feature [35]..........................................................................123

Insufficient memory, some Held Jobs were deleted [37] ............................................................................... 123

Insufficient memory, some held jobs will not be restored [37]......................................................................123

Insufficient space between paper stacks in Tray 3 .........................................................................................123

Load [paper source] with [custom string] [paper orientation] ....................................................................... 124

Load [paper source] with [custom type name] [paper orientation] ............................................................... 124

Load [paper source] with [paper size] [paper orientation]............................................................................. 124

Load [paper source] with [paper type] [paper size] [paper orientation]........................................................ 124

Load Multipurpose Feeder with [custom string] [paper orientation]............................................................. 124

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Load Multipurpose Feeder with [custom type name] [paper orientation] ....................................................125

Load Multipurpose Feeder with [paper size] [paper orientation] ..................................................................125

Load Multipurpose Feeder with [paper type] [paper size] [paper orientation] ............................................. 125

Load staples ................................................................................................................... .................................125

Load staples [G11, G12] .................................................................................................................................. 126

[x] maintenance kit very low [80.xy]...............................................................................................................126

Memory full [38] .............................................................................................................................................126

Memory full, cannot print faxes .....................................................................................................................126

Memory full, cannot send faxes .....................................................................................................................126

No analog phone line connected to modem, fax is disabled..........................................................................126

Network [x] software error [54] ..................................................................................................................... 126

Not enough free space in flash memory for resources [52] ........................................................................... 127

Open door H and remove paper from beneath area H10 ..............................................................................127

Paper changes needed.................................................................................................................................... 127

Parallel port [x] disabled [56].......................................................................................................................... 127

Photoconductor low [84.xy] ...........................................................................................................................127

Photoconductor very low [84.xy].................................................................................................................... 127

Printer had to restart. Last job may be incomplete. ....................................................................................... 127

Reinstall missing or unresponsive cartridge [31.xy] ....................................................................................... 128

Reinstall missing or unresponsive photoconductor [31.xy]............................................................................ 128

Remove defective disk [61].............................................................................................................................128

Remove packaging material, [area name] ...................................................................................................... 128

Remove packaging material, open door C, remove metal clips, remove all screws from scanner carriage... 128

Remove paper from all bins............................................................................................................................128

Remove paper from bin [x]............................................................................................................................. 128

Remove paper from [linked set bin name] ..................................................................................................... 129

Remove paper from standard output bin....................................................................................................... 129

Replace all originals if restarting job...............................................................................................................129

Replace cartridge, 0 estimated pages remain [88.xy]..................................................................................... 129

Replace cartridge, printer region mismatch [42.xy] ....................................................................................... 129

Replace jammed originals if restarting job .....................................................................................................130

Replace [x] maintenance kit, 0 estimated pages remain [80.xy] .................................................................... 130

Replace missing photoconductor [31.xy]........................................................................................................ 130

Replace missing waste toner bottle [82.xy].................................................................................................... 130

Replace missing cartridge [31.xy] ................................................................................................................... 130

Replace paper pick rollers in [paper source], use parts and instructions in tray 1 or tray 2

compartment [80] ...................................................................................................................................... 130

Replace photoconductor, 0 pages remain [84.xy] .......................................................................................... 130

Replace unsupported cartridge [32.xy] ..........................................................................................................131

Replace unsupported photoconductor [32.xy]............................................................................................... 131

Replace waste toner bottle [82.xy].................................................................................................................131

Restore held jobs? ..........................................................................................................................................131

Scanner disabled by admin [840.01]............................................................................................................... 131

Scanner disabled. Contact system administrator if problem persists. [840.02] .............................................131

Scanner jam, remove jammed originals from the scanner [2yy.xx] ...............................................................131

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Scanner maintenance required, use ADF Kit [80] ........................................................................................... 131

Scanner maintenance required soon, use ADF Kit [80] .................................................................................. 131

Serial port [x] disabled [56]............................................................................................................................. 132

Some held jobs were not restored .................................................................................................................132

SMTP server not set up. Contact system administrator. ................................................................................132

Standard network software error [54]............................................................................................................ 132

Standard USB port disabled [56]..................................................................................................................... 132

Supply needed to complete job ......................................................................................................................132

The device is operating in Safe Mode. Some print options may be disabled or provide unexpected

results......................................................................................................................................................... 133

Too many flash options installed [58]............................................................................................................. 133

Too many trays attached [58].........................................................................................................................133

Tray [x] paper size unsupported .....................................................................................................................133

Unformatted flash detected [53]....................................................................................................................133

Unsupported disk............................................................................................................................................133

Unsupported option in slot [x] [55] ................................................................................................................ 134

Waste toner bottle nearly full [82.xy]............................................................................................................. 134

Weblink server not set up. Contact system administrator. ............................................................................ 134

User attendance messages....................................................................................................................134

User attendance messages (0‑99) .................................................................................................................. 134

Cartridge or photoconductor error service check .......................................................................................... 135

Mismatched paper size service check.............................................................................................................136

Insufficient memory service check ................................................................................................................. 137

Complex page service check ...........................................................................................................................137

PPDS font error service check.........................................................................................................................138

Flash memory failure service check................................................................................................................138

Insufficient flash memory service check......................................................................................................... 139

Network service check .................................................................................................................................... 140

Unsupported internal option service check.................................................................................................... 142

Disabled port service check ............................................................................................................................ 143

Unrestored held jobs service check ................................................................................................................ 143

Excess options service check ..........................................................................................................................144

Incompatible hardware option service check.................................................................................................145

Hard disk failure service check .......................................................................................................................145

Maintenance kit service check........................................................................................................................ 146

Printer hardware errors........................................................................................................................146

111 errors ....................................................................................................................................................... 147

12y errors........................................................................................................................................................ 148

13y errors........................................................................................................................................................ 153

153 errors ....................................................................................................................................................... 156

16y errors........................................................................................................................................................ 157

171–182 errors ...............................................................................................................................................163

189 errors ....................................................................................................................................................... 164

19y errors........................................................................................................................................................ 166

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600 errors ....................................................................................................................................................... 180

685 errors ....................................................................................................................................................... 181

Steps before starting the 9yy service checks ..................................................................................................183

900 errors ....................................................................................................................................................... 185

911–963 errors ...............................................................................................................................................190

ADF/scanner hardware errors...............................................................................................................192

800 error messages.........................................................................................................................................192

809 error messages.........................................................................................................................................192

816–824 error messages................................................................................................................................. 193

850–891 error messages................................................................................................................................. 193

ADF controller board service check ................................................................................................................194

ADF/scanner image controller board service check ....................................................................................... 195

ADF CIS service check ..................................................................................................................................... 196

Scanner controller board service check.......................................................................................................... 197

Scanner CCD service check .............................................................................................................................198

Scanner lamp service check............................................................................................................................ 199

Fax error log codes .........................................................................................................................................199

Escalating a fax issue to second‑level support................................................................................................ 203

Symptoms..............................................................................................................................................204

3000‑sheet tray tray set failure service check ................................................................................................ 204

Service menus..........................................................................................207

Understanding the printer control panel..............................................................................................207

Using the control panel................................................................................................................................... 207

Understanding the colors of the Sleep button and indicator lights................................................................ 207

Understanding the home screen .................................................................................................................... 208

Using the touch-screen buttons ..................................................................................................................... 210

Menus list..............................................................................................................................................211

Diagnostics Menu..................................................................................................................................212

Entering the Diagnostics menu....................................................................................................................... 212

Reset Separator Roll and Pick Assembly Counter ........................................................................................... 212

Reset Maintenance Counter ........................................................................................................................... 212

Reset Fuser Counter ....................................................................................................................................... 212

REGISTRATION ................................................................................................................... .............................213

SCANNER CALIBRATION ............................................................................................................ ...................... 213

PRINT TESTS .................................................................................................................................................... 214

Print Quality Pages..........................................................................................................................................214

HARDWARE TESTS .......................................................................................................................................... 215

DUPLEX TESTS ................................................................................................................................................. 216

INPUT TRAY TESTS ..........................................................................................................................................217

OUTPUT BIN TESTS .........................................................................................................................................217

SENSOR TESTS.................................................................................................................................................218

Motor Tests.....................................................................................................................................................219

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DEVICE TESTS .................................................................................................................................................. 223

PRINTER SETUP ............................................................................................................................................... 224

REPORTS .........................................................................................................................................................226

EVENT LOG...................................................................................................................................................... 226

SCANNER TESTS ..............................................................................................................................................227

Exit Diags......................................................................................................................................................... 228

Configuration Menu..............................................................................................................................229

Entering the Configuration menu ...................................................................................................................229

Hole Punch Configuration............................................................................................................................... 229

Reset Maintenance Counter ........................................................................................................................... 229

USB Scan to Local............................................................................................................................................ 229

Print Quality Pages..........................................................................................................................................229

Reports ........................................................................................................................................................... 230

SIZE SENSING .................................................................................................................................................. 230

Tray Linking .....................................................................................................................................................230

Panel Menus ...................................................................................................................................................230

PPDS Emulation ..............................................................................................................................................231

Download Emuls ................................................................................................................. ............................ 231

Safe Mode.......................................................................................................................................................231

Energy Conserve ............................................................................................................................................. 231

Fax Low Power Support .................................................................................................................................. 231

Min Copy Memory .......................................................................................................................................... 232

NumPad Job Assist ..........................................................................................................................................232

Format Fax Storage ......................................................................................................................................... 232

Fax Storage Location ....................................................................................................................................... 232

ADF Edge Erase ............................................................................................................................................... 232

FB Edge Erase .................................................................................................................. ................................233

Scanner Manual Registration..........................................................................................................................233

Disable Scanner ..............................................................................................................................................233

Paper Prompts ................................................................................................................................................233

Envelope Prompts........................................................................................................................................... 233

Action for Prompts..........................................................................................................................................234

Jobs on Disk .................................................................................................................................................... 234

Disk Encryption ...............................................................................................................................................234

Font Sharpening.............................................................................................................................................. 234

Require Standby..............................................................................................................................................234

UI Automation ................................................................................................................................................ 235

LES Applications .............................................................................................................................................. 235

Key Repeat Initial Delay ..................................................................................................................................235

Key Repeat Rate..............................................................................................................................................235

Clear Supply Usage History .............................................................................................................................235

Clear Custom Status........................................................................................................................................ 235

USB Speed....................................................................................................................................................... 236

Automatically Display Error Screens ...............................................................................................................236

Restore factory defaults ....................................................................................................... .......................... 236

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Exit Config ....................................................................................................................................................... 237

Entering Invalid engine mode................................................................................................................237

Entering Recovery Mode.......................................................................................................................237

Entering Safe Mode (EverReady Mode)................................................................................................238

Accessing the Network SE Menu...........................................................................................................238

Service Engineer menu..........................................................................................................................238

Accessing the Service Engineer (SE) Menu ..................................................................................................... 238

Service Engineer (SE) Menu ............................................................................................................................ 238

Fax Service Engineer (SE) Menu...................................................................................................................... 239

Repair information...................................................................................241

Removal precautions.............................................................................................................................241

Data security notice ........................................................................................................................................241

Handling ESD‑sensitive parts .......................................................................................................................... 241

Restoring the printer configuration after replacing the controller board ...................................................... 242

Restoring solutions, licenses, and configuration settings ...............................................................................245

Updating the printer firmware ...................................................................................................................... 246

Backing up eSF solutions and settings ............................................................................................................ 247

Understanding the marked or colored screws ............................................................................................... 248

Ribbon cable connectors ................................................................................................................................ 248

Zero Insertion Force (ZIF) connectors ........................................................................................................ 248

Horizontal top contact connector .............................................................................................................. 249

Horizontal bottom contact connector........................................................................................................ 251

Vertical mount contact connector .............................................................................................................253

Horizontal sliding contact connector ......................................................................................................... 255

Low Insertion Force (LIF) connector...........................................................................................................257

Adjustments..........................................................................................................................................258

ADF height adjustment ................................................................................................................................... 258

ADF registration adjustment........................................................................................................................... 259

ADF separator roller pressure adjustment ..................................................................................................... 260

Flatbed registration adjustment ..................................................................................................................... 261

Fuser alignment adjustment........................................................................................................................... 262

MPF separator roller pressure adjustment..................................................................................................... 263

Pick roller pressure adjustment ...................................................................................................................... 265

Scanner carriage belt adjustment...................................................................................................................267

3000‑sheet tray pick roller pressure adjustment ...........................................................................................268

2500‑sheet tray transfer guide belt adjustment.............................................................................................270

Removal procedures.............................................................................................................................271

Left side removals.................................................................................................................................272

Left cover removal ..........................................................................................................................................272

Rear left cover removal ..................................................................................................................................273

Main power supply shield removal................................................................................................................. 273

Main power supply fan removal..................................................................................................................... 274

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Main power supply removal ...........................................................................................................................275

Printhead removal .......................................................................................................................................... 275

Printhead relay board removal .......................................................................................................................276

Right side removals...............................................................................................................................278

Port access door removal ...............................................................................................................................278

Fuser removal .................................................................................................................................................279

Induction heater removal ...............................................................................................................................279

Registration transport assembly..................................................................................................................... 282

Upper right cover removal.............................................................................................................................. 283

Redrive belt cover removal............................................................................................................................. 283

Redrive belt removal....................................................................................................................................... 284

Transfer roller removal ................................................................................................................................... 284

Duplex transport assembly removal ............................................................................................................... 285

Duplex transport jam removal knob removal................................................................................................. 286

Duplex transport diverter assembly removal ................................................................................................. 287

Sensor (fuser exit) removal.............................................................................................................................288

Fuser exit sensor actuator removal ................................................................................................................ 288

Sensor (duplex pass through 1) removal ........................................................................................................ 289

Duplex pass through 1 actuator removal........................................................................................................290

Duplex transport belt removal........................................................................................................................ 292

Duplex transport gears removal .....................................................................................................................292

Motor (duplex transport) removal.................................................................................................................. 293

Right door lock removal..................................................................................................................................295

Tray 2 transport guide .................................................................................................................................... 296

MPF removal................................................................................................................................................... 297

MPF tray removal ........................................................................................................................................... 298

Sensor (MPF paper length) removal ...............................................................................................................299

MPF feed clutch removal ................................................................................................................................ 300

MPF lift plate solenoid removal......................................................................................................................301

MPF gears removal ......................................................................................................................................... 302

Sensor (MPF lift plate) removal ......................................................................................................................303

Sensor (MPF empty) removal ......................................................................................................................... 305

MPF feed/separator assembly........................................................................................................................306

MPF lift plate assembly removal.....................................................................................................................308

MPF empty actuator removal......................................................................................................................... 309

Duplex transport guide removal ..................................................................................................................... 310

Registration unit latch assembly removal....................................................................................................... 310

Right door switch actuator removal ............................................................................................................... 312

Right door removal ......................................................................................................................................... 312

Registration unit assembly removal ............................................................................................................... 314

Registration unit sub-assembly removal ........................................................................................................ 315

Sensor (fusing speed) removal........................................................................................................................ 317

Fusing speed actuator removal....................................................................................................................... 317

Sensor (duplex pass through 2) removal ........................................................................................................ 318

Registration unit belt removal ........................................................................................................................ 319

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Registration unit gears removal...................................................................................................................... 320

Registration unit lock removal........................................................................................................................321

Front side removals...............................................................................................................................323

Control panel frame removal.................................................................................................... ...................... 323

Control panel board removal..........................................................................................................................326

Touch screen removal..................................................................................................................................... 327

Top front door removal ..................................................................................................................................328

Bottom front door removal ............................................................................................................................ 328

Front inner cover removal .............................................................................................................................. 329

Waste toner door mount removal..................................................................................................................329

Image controller board removal ..................................................................................................................... 330

Door switch removal....................................................................................................................................... 330

Main power switch removal ...........................................................................................................................331

Sensor (top front door) removal.....................................................................................................................332

Motor (toner supply) removal ........................................................................................................................ 333

Waste toner drive removal ............................................................................................................................. 334

Sensor (toner cartridge present) removal ...................................................................................................... 335

Toner agitator removal ...................................................................................................................................336

Developer unit removal ..................................................................................................................................337

Right door switch removal.............................................................................................................................. 339

Speaker cover removal ................................................................................................................................... 339

Speaker removal ............................................................................................................................................. 341

Control panel removal .................................................................................................................................... 342

Rear side removals................................................................................................................................345

Scanner interface cable cover removal ..........................................................................................................345

Controller board access cover removal .......................................................................................................... 346

Engine board cover removal........................................................................................................................... 347

Upper rear cover removal............................................................................................................................... 347

IHPS shield removal ........................................................................................................................................ 348

Induction heater magnetic erase board (IHMEB) removal .............................................................................349

Induction heater power supply (IHPS) removal .............................................................................................. 351

Noise filter board removal.............................................................................................................................. 351

Expansion controller board removal .............................................................................................................. 352

Power‑saving board removal ..........................................................................................................................353

Engine controller board removal .................................................................................................................... 354

ADF/scanner image controller board removal ............................................................................................... 355

Hard drive removal ......................................................................................................................................... 357

Controller board removal ...............................................................................................................................357

Fax card removal.............................................................................................................................................358

Motor (fuser pressure) removal ..................................................................................................................... 359

Paper exit fan duct removal............................................................................................................................ 360

Paper exit fan removal....................................................................................................................................361

IHPS frame removal ........................................................................................................................................ 361

Fuser power supply fan removal ....................................................................................................................362

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Motor (toner cartridge) removal ....................................................................................................................363

Motor (redrive) removal ................................................................................................................................. 365

Controller board frame removal.....................................................................................................................366

Controller board fan removal ................................................................................................... ...................... 367

Motor (transport) removal ............................................................................................................................. 368

Motor (developer) removal ............................................................................................................................369

High voltage board removal ...........................................................................................................................370

Motor (registration) removal..........................................................................................................................371

Motor (feed) removal ..................................................................................................................................... 373

Tray 2 transport drive removal .......................................................................................................................374

Motor (tray 2 transport) removal ...................................................................................................................375

Feed drive assembly removal ......................................................................................................................... 376

Sensor (tray 1 and 2 paper temperature) removal .........................................................................................377

Ozone fan removal.......................................................................................................................................... 377

Ozone fan duct removal ................................................................................................................................. 379

Center cable guide bracket removal ............................................................................................................... 380

Main drive assembly removal......................................................................................................................... 380

Toner cartridge drive assembly removal ........................................................................................................383

Duplex transport clutch removal .................................................................................................................... 384

Motor (fuser) removal ....................................................................................................................................385

Fuser drive gearbox removal .................................................................................................... ...................... 386

Toner suction fan removal..............................................................................................................................388

Top side removals.................................................................................................................................390

Standard bin base removal .............................................................................................................................390

Fuser fan removal ........................................................................................................................................... 390

Bin side cover removal.................................................................................................................................... 391

ADF and scanner removals....................................................................................................................392

ADF assembly removal........................................................................................................... ......................... 392

ADF CIS assembly removal ..............................................................................................................................395

ADF CIS power supply board removal............................................................................................................. 397

ADF controller board removal ........................................................................................................................397

ADF cushion removal ...................................................................................................................................... 397

ADF duplex scan glass removal....................................................................................................................... 397

ADF fan removal ............................................................................................................................................. 399

ADF feed and pick roller assembly removal.................................................................................................... 399

ADF feed roller removal..................................................................................................................................401

ADF front cover removal................................................................................................................................. 403

ADF glass cleaning roller removal ................................................................................................................... 404

ADF left hinge removal ...................................................................................................................................407

ADF pick roller removal................................................................................................................................... 408

ADF right hinge removal ................................................................................................................................. 410

ADF rear cover removal ..................................................................................................................................411

ADF registration guide removal ......................................................................................................................411

ADF scan/exit roller belt removal ...................................................................................................................412

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ADF separator pad removal ............................................................................................................................413

ADF separator roller removal .........................................................................................................................413

ADF top cover assembly removal ...................................................................................................................414

ADF top cover removal ...................................................................................................................................414

ADF tray removal ............................................................................................................................................ 415

ADF tray bottom cover removal .....................................................................................................................416

Sensor (ADF CIS clean) removal ...................................................................................................................... 416

Sensor (ADF jam access cover) removal ......................................................................................................... 417

Sensor (ADF scan shaft home) removal .......................................................................................................... 418

Sensor (ADF top cover open) removal ............................................................................................................419

Sensor (scan glass clean) removal .................................................................................................................. 420

Sensor (scanner cover open) removal ............................................................................................................420

Sensor (scanner cover switch) removal .......................................................................................................... 421

Sensor (scanner lamp home) removal ............................................................................................................ 422

Sensor (scanner paper length 1) removal....................................................................................................... 423

Sensor (scanner paper length 2) removal....................................................................................................... 424

Sensors (ADF tray section) removal ................................................................................................................ 425

Sensors (ADF top open cover section) removal .............................................................................................. 426

Scanner CCD lens assembly removal .............................................................................................................. 427

Scanner controller board removal .................................................................................................................. 429

Scanner glass removal .................................................................................................................................... 429

Scanner left cover removal ............................................................................................................................. 430

Scanner rear cover removal ............................................................................................................................431

Scanner right cover removal...........................................................................................................................431

Scanner top cover removal ............................................................................................................................. 431

Motor (ADF CIS clean) removal.......................................................................................................................432

Motor (ADF scan shaft release) removal ........................................................................................................433

Motor (ADF feed) removal.............................................................................................................................. 434

Motor (ADF scan) removal.............................................................................................................................. 436

Motor (ADF registration) removal .................................................................................................................. 437

Motor (CIS glass clean) removal .....................................................................................................................440

Motor (scanner drive) removal.......................................................................................................................441

Control panel base removal............................................................................................................................441

Control panel bottom cover removal ............................................................................................................. 443

2500-sheet tray removals......................................................................................................................443

2500-sheet tray caster wheel removal ........................................................................................................... 443

2500-sheet tray controller board removal ..................................................................................................... 444

2500-sheet tray LED cover removal................................................................................................................ 445

2500-sheet tray front right cover removal ..................................................................................................... 445

2500-sheet tray left cover removal ................................................................................................................ 446

2500-sheet tray lower right cover removal ....................................................................................................446

2500-sheet tray empty LED removal .............................................................................................................. 447

2500-sheet tray rear cover removal ............................................................................................................... 447

2500-sheet tray rear right cover removal....................................................................................................... 448

2500‑sheet tray division board removal......................................................................................................... 448

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2500‑sheet tray main tray empty sensor bottom actuator removal..............................................................449

2500‑sheet tray elevator home sensor actuator removal .............................................................................. 450

2500‑sheet tray transfer guide stop removal ................................................................................................. 451

2500‑sheet reserve tray paper limit sensor actuator removal .......................................................................452

2500‑sheet tray vertical media transport guide assembly removal ...............................................................453

2500‑sheet tray transport roller removal ....................................................................................................... 454

2500-sheet tray jam access cover removal..................................................................................................... 455

2500-sheet tray jam access door strap removal............................................................................................. 456

2500-sheet tray paper feed assembly removal .............................................................................................. 457

2500-sheet tray pick assembly removal ......................................................................................................... 457

2500-sheet tray paper stack transfer guide removal...................................................................................... 458

2500-sheet reserve tray empty sensor actuator removal ..............................................................................460

2500‑sheet tray stopper removal ................................................................................................................... 460

Motor (2500‑sheet tray elevator) removal.....................................................................................................461

Motor (2500‑sheet tray feed) removal........................................................................................................... 462

Motor (2500‑sheet tray transfer guide) removal ........................................................................................... 463

Motor (2500‑sheet tray transport) removal ...................................................................................................463

Sensor (2500‑sheet tray jam access door) removal........................................................................................464

Sensor (2500‑sheet paper stack transfer) removal ........................................................................................465

Sensor (2500‑sheet tray elevator home) removal.......................................................................................... 466

Sensor (2500‑sheet tray main tray empty, bottom) removal......................................................................... 466

Sensor (2500‑sheet tray main tray near empty) removal............................................................................... 467

Sensor (2500‑sheet tray main tray empty, top) removal ............................................................................... 468

Sensor (2500‑sheet tray main tray elevator limit) removal............................................................................468

Sensor (2500‑sheet tray feed) removal .......................................................................................................... 469

Sensor (2500‑sheet tray reserve tray empty) removal ................................................................................... 470

Sensor (2500‑sheet tray reserve tray paper limit) removal............................................................................ 471

Sensor (2500‑sheet tray transfer guide home) removal.................................................................................471

Sensor (2500-sheet tray set) removal............................................................................................................. 472

Sensor (2500‑sheet tray transport) removal .................................................................................................. 473

2 x 500-sheet tray removals..................................................................................................................474

Sensor (2 x 500-sheet tray jam access door) removal .................................................................................... 474

2 x 500-sheet tray caster wheel removal........................................................................................................ 475

Printer rubber stopper removal...................................................................................................................... 475

Tray insert paper length guide removal..........................................................................................................476

Tray lock removal............................................................................................................................................ 478

2 x 500-sheet tray rollers removal..................................................................................................................480

Sensor (2 x 500-sheet tray paper length) removal .........................................................................................480

2 x 500-sheet tray left cover removal............................................................................................................. 482

2 x 500-sheet tray empty LED cover removal ................................................................................................. 482

2 x 500-sheet tray empty LED removal........................................................................................................... 483

2 x 500-sheet tray empty LED mount removal ............................................................................................... 483

2 x 500-sheet tray rear cover removal............................................................................................................ 484

Motor (2 x 500-sheet tray lift) removal ..........................................................................................................484

Sensor (2 x 500-sheet tray near empty) removal ........................................................................................... 485

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Sensor (2 x 500-sheet tray paper width) removal ..........................................................................................486

2 x 500-sheet tray feed and transport motors removal .................................................................................487

2 x 500-sheet tray controller board removal .................................................................................................. 488

2 x 500-sheet tray jam access door removal ..................................................................................................489

2 x 500-sheet tray rear right cover removal ................................................................................................... 490

2 x 500-sheet tray bottom right cover removal..............................................................................................491

2 x 500-sheet tray 3 transport assembly removal ..........................................................................................491

2 x 500-sheet tray 4 transport assembly removal ..........................................................................................492

2 x 500-sheet tray transport assembly sensors removal ................................................................................493

2 x 500‑sheet tray tray set actuator removal .................................................................................................494

Sensor (2 x 500-sheet tray transport) removal............................................................................................... 495

2 x 500-sheet tray 3 transport belts and gears removal................................................................................. 496

2 x 500-sheet tray 4 transport belts and gears removal................................................................................. 497

3000-sheet tray removals......................................................................................................................499

3000-sheet tray rollers removal .....................................................................................................................499

3000-sheet tray feed and pick belt removal ................................................................................................... 501

3000-sheet tray caster wheel removal ........................................................................................................... 503

3000-sheet tray release handle removal ........................................................................................................ 504

3000-sheet tray left cover removal ................................................................................................................ 505

3000-sheet tray right cover removal ..............................................................................................................506

3000-sheet tray front cover removal..............................................................................................................506

3000-sheet tray rear cover removal ............................................................................................................... 507

3000-sheet tray door removal ........................................................................................................................ 508

3000-sheet tray left top cover removal ..........................................................................................................509

Dehumidifier removal ..................................................................................................................................... 510

3000-sheet tray empty LED removal .............................................................................................................. 511

Sensor (3000-sheet tray empty) removal ....................................................................................................... 511

Sensor (3000-sheet tray elevator level) removal............................................................................................ 512

Sensor (3000-sheet tray feed) removal ..........................................................................................................513

3000-sheet tray elevator spring removal........................................................................................................ 514

3000-sheet tray controller board removal ..................................................................................................... 514

3000-sheet tray door switch removal............................................................................................................. 515

Motor (3000-sheet tray elevator) removal.....................................................................................................516

3000-sheet tray set sensor actuator removal................................................................................................. 516

Sensor (3000-sheet tray set) removal............................................................................................................. 517

Sensor (3000-sheet tray near empty) removal............................................................................................... 518

Motor bracket removal...................................................................................................................................520

3000-sheet tray feed and transport motors removal .....................................................................................520

3000-sheet tray feed roller assembly removal ............................................................................................... 521

3000-sheet tray pick roller assembly removal................................................................................................524

Component locations...............................................................................529

Exterior locations..................................................................................................................................529

Front view ....................................................................................................................................................... 529

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Rear view ........................................................................................................................................................531

Maintenance............................................................................................533

Inspection guide....................................................................................................................................533

Scheduled maintenance........................................................................................................................534

Maintenance kits ............................................................................................................................................ 534

Resetting the maintenance counter ...............................................................................................................535

Lubrication specification.......................................................................................................................535

Cleaning the printer parts.....................................................................................................................536

Cleaning the printer ........................................................................................................................................536

Cleaning the scanner glass..............................................................................................................................536

Cleaning the charger and the printhead lens ................................................................................................. 537

Emptying the hole punch box .........................................................................................................................540

Parts catalog............................................................................................542

Legend...................................................................................................................................................542

Assembly 1: Covers 1.............................................................................................................................543

Assembly 2: Covers 2.............................................................................................................................545

Assembly 3: Inner covers.......................................................................................................................547

Assembly 4: Control panel 1..................................................................................................................549

Assembly 5: Control panel 2..................................................................................................................551

Assembly 6: Printhead...........................................................................................................................553

Assembly 7: Toner supply 1...................................................................................................................555

Assembly 8: Toner supply 2...................................................................................................................557

Assembly 9: Waste toner......................................................................................................................559

Assembly 10: Developer........................................................................................................................561

Assembly 11: Photoconductor lock.......................................................................................................563

Assembly 12: Transfer belt....................................................................................................................565

Assembly 13: Tray 1 and 2 transport.....................................................................................................567

Assembly 14: Tray 1 feed......................................................................................................................569

Assembly 15: Tray 1 separator..............................................................................................................571

Assembly 16: Tray 2 feed......................................................................................................................573

Assembly 17: Tray 2 separator..............................................................................................................575

Assembly 18: Tray rail...........................................................................................................................577

Assembly 19: Tray paper detection.......................................................................................................579

Assembly 20: 500-sheet tray—Tray 1...................................................................................................581

Assembly 21: 500‑sheet tray—Tray 1 or Tray 2....................................................................................583

Assembly 22: 500‑sheet tray—Tray 2...................................................................................................585

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Assembly 23: Registration transport.....................................................................................................587

Assembly 24: Transfer...........................................................................................................................589

Assembly 25: Registration unit..............................................................................................................591

Assembly 26: Right door transport........................................................................................................593

Assembly 27: MPF 1..............................................................................................................................595

Assembly 28: MPF 2..............................................................................................................................597

Assembly 29: Duplex 1..........................................................................................................................599

Assembly 30: Duplex 2..........................................................................................................................601

Assembly 31: Fuser................................................................................................................................603

Assembly 32: Exit 1................................................................................................................................605

Assembly 33: Exit 2................................................................................................................................607

Assembly 34: Main and feed drive........................................................................................................609

Assembly 35: Toner cartridge drive.......................................................................................................611

Assembly 36: Fuser drive 1....................................................................................................................613

Assembly 37: Fuser drive 2....................................................................................................................615

Assembly 38: Ozone duct......................................................................................................................617

Assembly 39: High voltage....................................................................................................................619

Assembly 40: Main power supply.........................................................................................................621

Assembly 41: Electrical 1.......................................................................................................................623

Assembly 42: Electrical 2.......................................................................................................................625

Assembly 43: ADF covers 1....................................................................................................................627

Assembly 44: ADF covers 2....................................................................................................................629

Assembly 45: ADF CIS 1.........................................................................................................................631

Assembly 46: ADF CIS 2.........................................................................................................................633

Assembly 47: ADF CIS 3.........................................................................................................................635

Assembly 48: ADF paper feed...............................................................................................................637

Assembly 49: ADF paper pick 1.............................................................................................................639

Assembly 50: ADF paper pick 2.............................................................................................................641

Assembly 51: ADF paper pick 3.............................................................................................................643

Assembly 52: ADF paper transport 1.....................................................................................................645

Assembly 53: ADF paper transport 2.....................................................................................................647

Assembly 54: ADF paper transport 3.....................................................................................................649

Assembly 55: ADF paper transport 4.....................................................................................................651

Assembly 56: ADF paper transport 5.....................................................................................................653

Assembly 57: ADF paper transport 6.....................................................................................................655

Assembly 58: Flatbed scanner covers...................................................................................................657

Assembly 59: Flatbed scanner 1............................................................................................................659

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Assembly 60: Flatbed scanner 2............................................................................................................661

Assembly 61: Flatbed scanner 3............................................................................................................663

Assembly 62: 2 x 500‑sheet tray—Covers.............................................................................................665

Assembly 63: 2 x 500‑sheet tray—Frame..............................................................................................667

Assembly 64: 2 x 500‑sheet tray—Paper feed......................................................................................669

Assembly 65: 2 x 500‑sheet tray—Paper size detection.......................................................................671

Assembly 66: 2 x 500‑sheet tray—Paper transport..............................................................................673

Assembly 67: 2 x 500‑sheet tray—Paper pick 1....................................................................................675

Assembly 68: 2 x 500‑sheet tray—Paper pick 2....................................................................................677

Assembly 69: 2 x 500‑sheet tray—Paper pick 3....................................................................................679

Assembly 70: 2 x 500‑sheet tray—Tray 3..............................................................................................681

Assembly 71: 2 x 500‑sheet tray—Tray 4..............................................................................................683

Assembly 72: 2 x 500‑sheet tray—Tray 3 or Tray 4 frame....................................................................685

Assembly 73: 3000‑sheet tray—Covers................................................................................................687

Assembly 74: 3000‑sheet tray—Frame 1..............................................................................................689

Assembly 75: 3000‑sheet tray—Frame 2..............................................................................................691

Assembly 76: 3000‑sheet tray—Elevator front section.........................................................................693

Assembly 77: 3000‑sheet tray—Paper feed 1.......................................................................................695

Assembly 78: 3000‑sheet tray—Paper feed 2.......................................................................................697

Assembly 79: 3000‑sheet tray—Paper transport..................................................................................699

Assembly 80: 3000‑sheet tray—Elevator rear section..........................................................................701

Assembly 81: 3000‑sheet tray—Drive section......................................................................................703

Assembly 82: 3000‑sheet tray—Wiring.................................................................................................705

Assembly 83: 2500-sheet tray covers....................................................................................................707

Assembly 84: 2500-sheet tray frame....................................................................................................709

Assembly 85: 2500-sheet tray paper feed.............................................................................................711

Assembly 86: 2500-sheet tray paper transport.....................................................................................713

Assembly 87: 2500-sheet tray paper pick 1..........................................................................................715

Assembly 88: 2500-sheet tray paper pick 2..........................................................................................717

Assembly 89: 2500-sheet tray paper pick 3..........................................................................................719

Assembly 90: 2500-sheet tray insert 1..................................................................................................721

Assembly 91: 2500-sheet tray insert 2..................................................................................................723

Assembly 92: 2500-sheet tray insert 3..................................................................................................725

Assembly 93: 2500-sheet tray insert 4..................................................................................................727

Assembly 94: Maintenance kits.............................................................................................................729

Assembly 95: Power cords....................................................................................................................731

Assembly 96: Miscellaneous.................................................................................................................733

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Appendix A: Printer specifications............................................................735

Power consumption..............................................................................................................................735

Product power consumption ..........................................................................................................................735

Sleep Mode .....................................................................................................................................................735

Hibernate Mode................................................................................................................. ............................. 735

Off mode.........................................................................................................................................................736

Total energy usage..........................................................................................................................................736

Operating clearances.............................................................................................................................736

Noise emission levels............................................................................................................................737

Temperature information.....................................................................................................................737

Appendix B: Options and features............................................................739

Available internal options.....................................................................................................................739

Media handling options.........................................................................................................................739

Appendix C: Theory of operation..............................................................741

POR sequence.......................................................................................................................................741

Printer control.......................................................................................................................................741

Print cycle operation.............................................................................................................................741

Flowchart ........................................................................................................................................................741

Charge.............................................................................................................................................................742

Expose.............................................................................................................................................................742

Develop........................................................................................................................ ...................................742

First transfer ...................................................................................................................................................743

Clean (photoconductor).................................................................................................................................. 744

Second transfer...............................................................................................................................................745

Clean (transfer belt) ........................................................................................................................................ 745

Fuse.................................................................................................................................................................746

Printer operation...................................................................................................................................748

Printer paper path .......................................................................................................................................... 748

Tray section.....................................................................................................................................................748

MPF section .................................................................................................................................................... 751

2500‑sheet tray section .................................................................................................................................. 753

3000‑sheet tray section .................................................................................................................................. 756

Registration section ........................................................................................................................................ 759

Print section....................................................................................................................................................760

Exit section...................................................................................................................................................... 761

Duplex section ................................................................................................................................................ 763

ADF operation.......................................................................................................................................765

ADF tray section configuration and paper path ............................................................................................. 765

ADF document feed section............................................................................................................................766

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ADF document registration section ................................................................................................................767

ADF document scanning section..................................................................................................................... 767

ADF document exit section............................................................................................................................. 769

Flatbed scanner operation....................................................................................................................769

Appendix D: Acronyms.............................................................................771

Acronyms...............................................................................................................................................771

Index........................................................................................................773

Part number index...................................................................................785

Part name index.......................................................................................805

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Notices and safety information

Laser notices

Laser notice

The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR, Chapter I, Subchapter J for Class I
(1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 60825-1.

Class I laser products are not considered to be hazardous. The printer contains internally a Class IIIb (3b) laser that is
nominally a 15‑milliwatt laser operating in the wavelength of 787–800 nanometers. The laser system and printer are
designed so there is never any human access to laser radiation above a Class I level during normal operation, user
maintenance, or prescribed service condition.

Laser-Hinweis

Der Drucker wurde in den USA zertifiziert und entspricht den DHHS-Vorschriften 21 CFR, Kapitel I, Unterkapitel J für
Laserprodukte der Klasse I (1); andernorts ist er als Laserprodukt der Klasse I zertifiziert, das den IEC 60825-1­Anforderungen entspricht.

Laserprodukte der Klasse I werden nicht als gefährlich eingestuft. Der Drucker enthält im Inneren einen Laser der
Klasse IIIb (3b), und zwar einen 15-Milliwatt-Laser, der im Wellenlängenbereich von 787 bis 800 Nanometern arbeitet.
Das Lasersystem und der Drucker sind so konstruiert, dass unter normalen Betriebsbedingungen, bei der Wartung durch
den Benutzer oder bei den vorgeschriebenen Wartungsbedingungen Menschen keiner Laserstrahlung ausgesetzt sind,
die die Werte für Klasse I überschreitet.

Avis relatif à l'utilisation du laser

L'imprimante est certifiée conforme aux exigences de la réglementation des Etats-Unis relative aux produits laser (DHHS
21 CFR, Chapter I, Subchapter J for Class I (1)). Pour les autres pays, elle est certifiée conforme aux exigences des normes
IEC 60825-1 relatives aux produits laser de classe I.

Les produits laser de Classe I ne sont pas considérés comme dangereux. L'imprimante contient un laser de classe IIIb
(3b), laser 15 milliwatts opérant sur une longueur d'onde de l'ordre de 787 à 800 nanomètres. Le système laser ainsi
que l'imprimante ont été conçus de manière à ce que personne ne soit exposé à des rayonnements laser dépassant le
niveau de classe I dans le cadre d'un fonctionnement normal, de l'entretien par l'utilisateur ou de la maintenance.

Avvertenze sui prodotti laser

La stampante è certificata negli Stati Uniti come stampante conforme ai requisiti DHHS 21 CFR, Capitolo I, Sottocapitolo
J per i prodotti laser di Classe I (1), mentre in altri paesi è certificata come prodotto laser di Classe I conforme ai requisiti
IEC 60825-1.

I prodotti laser di Classe I non sono considerati pericolosi. La stampante contiene un laser di Classe IIIb (3b), che è
nominalmente un laser a 15 milliwatt funzionante a una lunghezza d'onda di 787–800 nanometri. Il sistema laser e la
stampante sono stati progettati in modo da impedire l'esposizione a radiazioni laser superiori al livello previsto dalla
Classe I durante le normali operazioni di stampa, manutenzione o assistenza.

Notices and safety information

21

7421

Aviso de láser

Esta impresora se ha certificado en EE. UU. de conformidad con los requisitos de DHHS 21 CFR, capítulo I, subcapítulo
J, para los productos láser de Clase I (1), y en otros países está certificada como un producto láser de Clase I de acuerdo
con los requisitos de IEC 60825-1.

Los productos láser de Clase I no se consideran peligrosos. La impresora contiene un láser interno de Clase IIIb (3b) que
nominalmente es un láser de 15 milivatios que funciona en una longitud de onda de 787–800 nanómetros. El sistema
láser y la impresora se han diseñado para que ningún individuo acceda nunca a las radiaciones láser por encima del
nivel de Clase I durante su uso normal, ni en tareas de mantenimiento o intervenciones de servicio técnico prescritas.

Aviso sobre laser

A impressora foi certificada nos EUA por estar em conformidade com os requisitos do DHHS 21 CFR, capítulo I,
subcapítulo J, para produtos a laser de Classe I (1) e, nos demais países, foi certificada como produto a laser de Classe
I em conformidade com os requisitos da IEC 60825-1.

Os produtos a laser de Classe I não são considerados perigosos. A impressora contém, internamente, um laser de Classe
IIIb (3b) que é um laser de 15 miliwatts operando no comprimento de onda de 787–800 nanômetros. O sistema do
laser e a impressora foram projetados para que jamais haja acesso humano à radiação do laser acima do nível da Classe
I durante a operação normal ou a manutenção pelo usuário ou sob as condições de manutenção prescritas.

Laserinformatie

Deze printer is in de Verenigde Staten gecertificeerd als een product dat voldoet aan de vereisten van DHHS 21 CFR,
hoofdstuk 1, paragraaf J voor laserproducten van klasse I (1). Elders is de printer gecertificeerd als een laserproduct
van klasse I dat voldoet aan de vereisten van IEC 60825-1.

Laserproducten van klasse I worden geacht geen gevaar op te leveren. De printer bevat intern een laser van klasse IIIb
(3b), met een nominaal vermogen van 15 milliwatt en een golflengtebereik van 787–800 nanometer. Het lasersysteem
en de printer zijn zodanig ontworpen dat gebruikers nooit blootstaan aan laserstraling die hoger is dan het toegestane
niveau voor klasse I-apparaten, tijdens normaal gebruik, onderhoudswerkzaamheden door de gebruiker of
voorgeschreven servicewerkzaamheden.

Lasererklæring

Denne printer er certificeret i USA i henhold til kravene i DHHS 21 CFR, afsnit I, underafsnit J, for Klasse I-laserprodukter
(1) og certificeret andetsteds som et Klasse I-laserprodukt i henhold til kravene i IEC 60825-1.

Klasse I-laserprodukter anses ikke for at være farlige. Printeren indeholder internt en klasse IIIb (3b)-laser, der nominelt
er en 15 milliwatt laser, som fungerer i bølgelængdeområdet 787–800 nanometer. Lasersystemet og printeren er
udviklet på en sådan måde, at der ikke er en direkte laserstråling, der overskrider Klasse I-niveauet under normal brug,
brugers vedligeholdelse eller de foreskrevne servicebetingelser.

Laserilmoitus

Tämä tulostin on sertifioitu Yhdysvalloissa DHHS 21 CFR, Chapter I, Subchapter J -standardin mukaiseksi luokan I (1) ­lasertuotteeksi ja muualla IEC 60825-1 -standardin mukaiseksi luokan I lasertuotteeksi.

Luokan I lasertuotteita ei pidetä haitallisina. Tulostimen sisällä on luokan IIIb (3b) laser, joka on nimellisteholtaan 15
mW:n laser ja toimii 787–800 nanometrin aallonpituuksilla. Laserjärjestelmä ja tulostin ovat rakenteeltaan sellaisia,
että käyttäjä ei joudu alttiiksi luokkaa 1 suuremmalle säteilylle normaalin käytön, ylläpidon tai huollon aikana.

Notices and safety information

22

7421

Lasermeddelande

Skrivaren är certifierad i USA enligt kraven i DHHS 21 CFR, avsnitt I, underavsnitt J för laserprodukter av klass I (1) och
i andra länder är den certifierad som en laserprodukt av klass I som uppfyller kraven i IEC 60825-1.

Laserprodukter av klass I anses inte vara skadliga. Skrivaren innehåller en klass IIIb (3b)-laser, vilket är en 15 mW laser
som arbetar inom en våglängd på 787–800 nm. Lasersystemet och skrivaren är utformade så att människor aldrig utsätts
för laserstrålning över klass I-nivå under normala förhållanden vid användning, underhåll eller service.

Lasermerknad

Skriveren er sertifisert i USA for samsvar med kravene i DHHS 21 CFR, kapittel I, underkapittel J for laserprodukter av
klasse I (1), og er andre steder sertifisert som et laserprodukt av klasse I som samsvarer med kravene i IEC 60825-1.

Laserprodukter av klasse I anses ikke som helseskadelige. Skriveren inneholder en intern laser av klasse IIIb (3b) som
nominelt er en 15 milliwatt laser, og som opererer i bølgelengder på 787–800 nanometer. Lasersystemet og skriveren
er utformet slik at mennesker ikke utsettes for laserstråling utover nivået i klasse I under normal drift, vedlikehold eller
foreskrevet service.

Avís sobre el làser

Als EUA, la impressora està certificada de conformitat amb els requisits del capítol I, apartat J del CFR 21 del Departament
de Salut i Serveis Humans per a productes làser de classe I (1) i a la resta de països està certificada com a producte làser
de classe I d'acord amb els requisits de la norma IEC 60825-1.

Els productes làser de classe I no es consideren perillosos. A l'interior de la impressora hi ha un làser de classe IIIb (3b)
que nominalment de 15 mil·liwatts que funciona a una longitud d'ona de 787–800 nanòmetres. El sistema làser y la
impressora s'han dissenyat amb l'objectiu d'impedir l'accés humà de la radiació làser superior al nivell de classe I durant
un funcionament normal, el manteniment per part de l'usuari o les condicions de servei prescrites.

レーザーに関する通知

本機は、米国においてクラス I（1）レーザー製品に対する DHHS 21 CFR、Chapter I、Subchapter J の要件に準
拠し、その他の国では IEC 60825-1 の要件に準拠するクラス I レーザー製品として認可されています。

クラス I レーザー製品は、危険性がないとみなされています。 本機には、クラス IIIb（3b）レーザーが内蔵
されています。これは、787 ～ 800 ナノメートルの波長で動作する定格 15 ミリワットのレーザーです。 レ
ーザーシステムとプリンタは、通常の操作、ユーザーによるメンテナンス、または所定のサービス条件の下
で、ユーザーがクラス I レベルを超えるレーザー放射に絶対にさらされないように設計されています。

레이저 관련 공지

이 프린터는 미국에서 DHHS 21 CFR, Chapter I, Subchapter J 의 요구 사항을 준수하는 클래스 I(1) 레이저 제품으
로 승인되었으며 이외 지역에서 IEC 60825-1 의 요구 사항을 준수하는 클래스 I 레이저 제품으로 승인되었습니다.

Class I 레이저 제품은 위험한 제품으로 간주되지 않습니다. 프린터에는 787–800 나노미터의 파장 영역에서 작동
하는 공칭 15 밀리와트 레이저인 클래스 IIIb(3b) 레이저가 내부에 포함되어 있습니다. 레이저 시스템과 프린터
는 정상적인 작동, 사용자 유지 관리 또는
방사가 노출되지 않도록 설계되었습니다.

사전 설명된 서비스 조건에는 사람에게 클래스 I 수준 이상의 레이저

激光注意事项

本打印机在美国认证合乎 DHHS 21 CFR Chapter I，Subchapter J 对分类 I（1）激光产品的标准，而在其他地区则
被认证是合乎 IEC 60825-1 的分类 I 激光产品。

Notices and safety information

23

7421

一般认为分类 I 激光产品不具有危险性。本打印机内部含有分类 IIIb（3b）的激光，在操作过程中会产生额定
15 毫瓦的激光，其波长范围在 787–800nm 之间。本激光系统及打印机的设计，在一般操作、使用者维护或规

定内的维修情况下，不会使人体接触分类 I 以上等级的辐射。

雷射聲明

本印表機係經過美國核可，符合 DHHS 21 CFR，Chapter I，Subchapter J 規定的 I (1) 級雷射產品激光注意事项；
在美國以外的地區，為符合 IEC 60825-1 規定的 I 級雷射產品。

根據 I 級雷射產品的規定，這類產品不會對人體造成傷害。本機所採用之 IIIb (3b) 級雷射只會產生 15 百萬分之
一瓦特 (milliwatt)、波長 787 至 800 億分之一米 (nanometer) 的放射線。使用者只要以正確的方法操作及維護保
養，並依照先前所述之維修方式進行修護，此印表機與其雷射系統絕不會產生 I 級以上的放射線，而對人體造
成傷害。

Safety information

Safety information

• The safety of this product is based on testing and approvals of the original design and specific components. The

manufacturer is not responsible for safety in the event of use of unauthorized replacement parts.

• The maintenance information for this product has been prepared for use by a professional service person and is

not intended to be used by others.

• There may be an increased risk of electric shock and personal injury during disassembly and servicing of this product.

Professional service personnel should understand this and take necessary precautions.

CAUTION—POTENTIAL INJURY

The lithium battery in this product is not intended to be replaced. There is a danger of explosion if a lithium
battery is incorrectly replaced. Do not recharge, disassemble, or incinerate a lithium battery. Discard used
lithium batteries according to the manufacturer's instructions and local regulations.

Consignes de sécurité

• La sécurité de ce produit repose sur des tests et des agréations portant sur sa conception d'origine et sur des

composants particuliers. Le fabricant n'assume aucune responsabilité concernant la sécurité en cas d'utilisation de
pièces de rechange non agréées.

• Les consignes d'entretien et de réparation de ce produit s'adressent uniquement à un personnel de maintenance

qualifié.

• Le démontage et l'entretien de ce produit pouvant présenter certains risques électriques, le personnel d'entretien

qualifié devra prendre toutes les précautions nécessaires.

AVERTISSEMENT—RISQUE DE BLESSURE

La batterie lithium de ce produit n'est pas destinée à être remplacée. Il existe un risque d'explosion si une
batterie lithium est placée de façon incorrecte. Ne rechargez pas, ne démontez pas et n’incinérez pas une
batterie lithium. Mettez les batteries lithium usagées au rebut selon les instructions du fabricant et les
réglementations locales.

Notices and safety information

24

7421

Norme di sicurezza

• La sicurezza del prodotto si basa sui test e sull'approvazione del progetto originale e dei componenti specifici. Il

produttore non è responsabile per la sicurezza in caso di sostituzione non autorizzata delle parti.

• Le informazioni riguardanti la manutenzione di questo prodotto sono indirizzate soltanto al personale di assistenza

autorizzato.

• Durante lo smontaggio e la manutenzione di questo prodotto, il rischio di subire scosse elettriche e danni alla

persona è più elevato. Il personale di assistenza autorizzato deve, quindi, adottare le precauzioni necessarie.

ATTENZIONE — PERICOLO DI LESIONI

La batteria al litio presente del prodotto non deve essere sostituita. In caso di sostituzione errata della
batteria al litio, potrebbe verificarsi un'esplosione. Non ricaricare, smontare o bruciare batterie al litio.
Smaltire le batterie al litio usate seguendo le istruzioni del produttore e le norme locali.

Sicherheitshinweise

• Die Sicherheit dieses Produkts basiert auf Tests und Zulassungen des ursprünglichen Modells und bestimmter

Bauteile. Bei Verwendung nicht genehmigter Ersatzteile wird vom Hersteller keine Verantwortung oder Haftung
für die Sicherheit übernommen.

• Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen

Wartungsfachmann bestimmt.

• Während des Auseinandernehmens und der Wartung des Geräts besteht ein zusätzliches Risiko eines elektrischen

Schlags und körperlicher Verletzung. Das zuständige Fachpersonal sollte entsprechende Vorsichtsmaßnahmen
treffen.

VORSICHT - VERLETZUNGSGEFAHR

Die Lithiumbatterie in diesem Produkt darf nicht ausgetauscht werden. Wird eine Lithiumbatterie nicht
ordnungsgemäß ausgetauscht, besteht Explosionsgefahr. Lithiumbatterien dürfen auf keinen Fall wieder
aufgeladen, auseinander genommen oder verbrannt werden. Befolgen Sie zum Entsorgen verbrauchter
Lithiumbatterien die Anweisungen des Herstellers und die örtlichen Bestimmungen.

Pautas de Seguridad

• La seguridad de este producto se basa en pruebas y aprobaciones del diseño original y componentes específicos.

El fabricante no es responsable de la seguridad en caso de uso de piezas de repuesto no autorizadas.

• La información sobre el mantenimiento de este producto está dirigida exclusivamente al personal cualificado de

mantenimiento.

• Existe mayor riesgo de descarga eléctrica y de daños personales durante el desmontaje y la reparación de la máquina.

El personal cualificado debe ser consciente de este peligro y tomar las precauciones necesarias.

PRECAUCIÓN: POSIBLES DAÑOS PERSONALES

La batería de litio de este producto no debe reemplazarse. Existe riesgo de explosión si se sustituye
incorrectamente una batería de litio. No recargue, desmonte ni incinere una batería de litio. Deseche las
baterías de litio según las instrucciones del fabricante y las normativas locales.

Informações de Segurança

• A segurança deste produto baseia-se em testes e aprovações do modelo original e de componentes específicos. O

fabricante não é responsável pela segunrança, no caso de uso de peças de substituição não autorizadas.

• As informações de segurança relativas a este produto destinam-se a profissionais destes serviços e não devem ser

utilizadas por outras pessoas.

Notices and safety information

25

7421

• Risco de choques eléctricos e ferimentos graves durante a desmontagem e manutenção deste produto. Os

profissionais destes serviços devem estar avisados deste facto e tomar os cuidados necessários.

ATENÇÃO — RISCO DE FERIMENTO

A bateria de lítio neste produto não deve ser substituída. Existe o risco de explosão se uma bateria de lítio
for substituída incorretamente. Não recarregue, desmonte ou incinere uma bateria de lítio. Descarte as
baterias de lítio usadas de acordo com as instruções do fabricante e regulamentos locais.

Informació de Seguretat

• La seguretat d'aquest producte es basa en l'avaluació i aprovació del disseny original i els components específics.

El fabricant no es fa responsable de les qüestions de seguretat si s'utilitzen peces de recanvi no autoritzades.

• La informació pel manteniment d’aquest producte està orientada exclusivament a professionals i no està destinada

a ningú que no ho sigui.

• El risc de xoc elèctric i de danys personals pot augmentar durant el procés de desmuntatge i de servei d’aquest

producte. El personal professional ha d’estar-ne assabentat i prendre les mesures convenients.

ATENCIÓ

La bateria de liti d'aquest producte no ha estat dissenyada perquè es substitueixi. Hi ha perill d’explosió si
no es substitueix correctament la bateria de liti. No recarregueu, desmunteu o incinereu una bateria de
liti. Desfeu-vos de les bateries de liti usades d’acord amb les instruccions del fabricant i les regulacions
locals.

안전 사항

• 본 제품은 원래 설계및특정 구성에 대한 테스트 결과로 안정 성이 입증된 것입니다. 따라서 무허가 교체부품

을 사용하는 경 우 에는 제조업체에서 안전에 대한 책임을 지지 않습니다.

• 본 제품에 관한 유지 보수 설명 서는 전문 서비스 기술자 용으로 작성된 것이므로, 비 전문가는 사용할 수 없

습니다.

• 본 제품을 해체하거나 정비할 경우, 전 기전 인 충 경 을 받거나 상 처를 입을 위험이 커집니다. 전문 서비스

기술자는 이 사실을 숙지하고, 필요한 예방조치를 취하도록 하십시오.

주의—부상 위험
이 제품에 들어 있는 리튬 배터리는 교체할 수 없습니다. 리튬 배터리를 잘못 교체하면 폭발할 위험

이 있습니다. 리튬 배터리를 재충전하거나, 분해하거나, 태우지 마십시오. 제조업체의 지침과 지역
규정에 따라 다 쓴 리튬 배터리를 폐기하십시오.

安全信息

• 本产品的安全性以原来设计和特定产品的测试结果和认证为基础。万一使用来经许可的替换部件，制造商

不对安全性负责。

• 本产品的维护信息仅供专业服务人员使用，并不打算证其他人使用。

• 本产品在拆卸、维修时，遭受电击或人员受伤的危险性会增高，专业服务人员对这点必须有所了触，并采

取必要的预防措施。

当心一可能的伤害
本产品中的锂电池不可更换。如果不正确更换锂电池，

焚烧锂电池。丢弃旧的锂电池时应按照制造商的指导及当地法规进行处理

：

可能会有爆炸危

险。

。

不要再

充电、

拆解或

Notices and safety information

26

7421

Preface

This manual contains maintenance procedures for service personnel. It is divided into the following chapters:

• General information—Provides a general description of the printer, tools, and equipment needed to service the

printer

• Diagnostic information—Contains diagnostic aids such as error code tables, symptom and service checks that you

can use to isolate failing field replaceable units (FRUs)

• Service menus—Describes the printer interface, user and service menus

• Repair information—Provides instructions for making printer adjustments and for removing and installing FRUs

• Component locations—Shows illustrations that identify the basic printer parts

• Maintenance—Contains specifications for lubricating the printer and recommendations to prevent printer

problems

• Parts catalog—Shows illustrations and part numbers for the FRUs

• Appendix A: Printer specifications—Contains detailed specifications of the product

• Appendix B: Options and features—Contains the available options and other features of the product

• Appendix C: Theory of operation—Contains the theory on how the printer operates

• Appendix D: Acronyms—Contains a list of the acronyms in the manual and their meanings

Service manual conventions

Note: A note provides additional information.

Warning—Potential Damage: A warning identifies something that may damage the product hardware or software.

This service manual uses several different types of caution statements:

CAUTION—POTENTIAL INJURY: A caution identifies something that may cause harm to the service technician.

CAUTION—SHOCK HAZARD: This type of caution indicates a danger from hazardous voltage in the area of the

product where you are working. Unplug the product before you start working, or use caution if the product
must receive power to perform the task.

CAUTION—HOT SURFACE: This type of caution indicates a hot surface.

CAUTION—TIPPING HAZARD: This type of caution indicates a tipping hazard.

Change history

September 15, 2014

• Transfer belt fan removal was renamed to 'Fuser fan removal'.

• Control panel frame removal was updated.

Preface

27

September 3, 2014

• Installation information was added to the developer unit removal.

• Cable routing information was added to the induction heater removal.

• Printhead relay board removal was added. The printhead relay board removal was also included as a step for

printhead removal.

• Registration unit removal was revised. Step 1 has been replaced with the right door removal.

• Part number 40X9999 has been replaced with 40X9215.

• Old part number 40X9215 has been replaced with 40X9685.

• Updated the Control panel removal topic in the Repair information chapter.

• Added the Speaker removal topic in the Repair information chapter.

August 27, 2014

• Added the following Fixing image quality issues topics:

– Initial image quality check

– Flatbed scanner image quality check

August 13, 2014

7421

• Printer motor tests, 2 x 500-sheet tray motor tests, 2500-sheet tray motor tests, and 3000‑sheet tray motor tests

were revised to include steps for enabling safe mode.

• Control panel 2 parts catalog assembly was added, with new FRUs.

– 41X0452 (Control panel cover assembly)

– 41X0455 (Control panel UICC)

– 41X0453 (Control panel cable kit)

– 41X0454 (Control panel touch‑screen display)

• Photoconductor cleaner was renamed ‘Printhead cleaner’.

• Updated the control panel removal topic in the Repair chapter.

July 7, 2014

• Diagnostic information topics were added or revised.

– Bullet for cleaning the photoconductor unit and printhead was added to Initial print quality check

– Power requirement specifications was included in the 2nd bullet of Initial print quality check

– Checking of pick, feed, and separator rollers have been removed for print quality checks. Transfer roller will be

checked instead.

• Repair information topics were added or revised.

– Step for removing the front inner cover has been included to the Printhead removal

– Fuser connector cover removal—topic was deleted.

– Registration transport assembly removal—additional cables disconnected before removing the assembly.

– Front inner cover removal—callout to screws were revised.

– Toner agitator removal—additional cables disconnected before removing the assembly.

– Input options interface cover removal—topic was deleted.

– Sensor (2500‑sheet tray transfer guide, home) removal

– Step for removing the upper rear cover has been included to the Upper rear cover removal.

Preface

28

– Steps for removing the center cable guide bracket and high voltage board has been included to the Main drive

assembly removal.

– Sensor (2500‑sheet tray set) removal

• Imaging unit has been renamed to Transfer belt unit

• Parts catalog FRUs were added.

– 40X7104 (Power cord, 2.5 m (right-angled)—USA, Canada, Latin America)

– 40X0288 (Power cord, 2.5 m (straight)—Argentina)

– 40X1766 (Power cord, 2.5 m (straight)—Bolivia, Peru)

– 40X0273 (Power cord, 2.5 m (straight)—Italy, Chile, Uruguay)

– 40X3141 (Power cord, 2.5 m (straight)—Europe, Middle East, Indonesia, Africa (HV))

– 40X4596 (Power cord, 2.5 m (straight)—Brazil)

– 40X0271 (Power cord, 2.5 m (straight)—UK, Ireland, Hong Kong, Italy)

– 40X0301 (Power cord, 2.5 m (straight)—Australia, New Zealand)

– 40X0270 (Power cord, 2.5 m (straight)—Japan)

– 40X1792 (Power cord, 2.5 m (straight)—Korea)

– 40X0303 (Power cord, 2.5 m (straight)—PRC)

– 40X1791 (Power cord, 2.5 m (straight)—Taiwan)

– 40X1774 (Power cord, 2.5 m (straight)—Denmark, Finland, Norway, Sweden)

– 40X0275 (Power cord, 1.8 m (straight)—Israel)

– 40X1773 (Power cord, 2.5 m (straight)—South Africa, Hong Kong, Singapore, Thailand, Malaysia)

– 40X1772 (Power cord, 2.5 m (straight)—Liechtenstein, Switzerland)

– 40X7229 (Power cord, 2.5 m (straight)—India)

– 41X0010 (Forms and Bar code card)

– 41X0012 (IPDS card)

– 41X0011 (PRESCRIBE card)

– 41X0030 (Keyboard kit, English)

– 41X0031 (Keyboard kit, French)

– 41X0032 (Keyboard kit, Italian)

– 41X0033 (Keyboard kit, German)

– 41X0034 (Keyboard kit, Spanish)

– 40X1368 (USB cable, packaged (2 meters))

– 40X4819 (Serial interface card, RS‑232C)

– 40X4823 (Parallel interface card, 1284‑B)

– 40X7445 (DDR3 RAM, 2 GB x32)

– 40X7567 (DDR3 RAM, 1 GB x32)

– 40X8555 (Flash memory, 256 MB)

– 40X8556 (Font card, Traditional Chinese)

– 40X8557 (Font card, Simplified Chinese)

– 40X8568 (Font card, Korean)

– 40X8569 (Font card, Japanese)

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Preface

29

– 40X8570 (Font card, Arabic)

– 40X8571 (Font card, Hebrew)

– 40X8311 (Card reader, small stick‑on case)

– 40X8312 (Card reader, large stick‑on case)

– 40X8313 (Card reader, small snap‑on case)

– 40X8314 (Card reader, large snap‑on case)

– 40X7858 (Wireless print server kit, MarkNet N8350 802.11b/g/n)

– 40X7854 (Fax card)

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Preface

30

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General information

The LexmarkTM MX91x MFPs are network‑capable, multifunction laser printers that print monochrome print jobs. All
information in this service manual pertains to all models unless explicitly noted.

The printers are available in the following models:

Model Configurations Machine type / model

MX910de Mono laser MFP, Networking, Duplex print, Duplex scan,

10.1‑in. color touch screen

MX911dte Mono laser MFP, Networking, Duplex print, Duplex scan,

10.1‑in. color touch screen

MX912dxe Mono laser MFP, Networking, Duplex print, Duplex scan,

10.1‑in. color touch screen

For information on diagnosing a problem, see “Diagnostic information” on page 45. For information on removing
and reinstalling parts, see

catalog” on page 542.

“Repair information” on page 241. For information on identifying the parts, see “Parts

7421-036

7421-236

7421-436

Paper and specialty media guide

Notes:

• Make sure that the paper size, type, and weight are set correctly on the computer or control panel.

• Flex, fan, and straighten specialty media before loading them.

• The printer may print at a reduced speed to prevent damage to the fuser.

• For more information on card stock and labels, see the Card Stock & Label Guide at

http://support.lexmark.com.

Using specialty media

Tips on using card stock

Card stock is heavy, single‑ply specialty media. Many of its variable characteristics, such as moisture content, thickness,
and texture, can significantly affect print quality.

• From the printer control panel, set the paper size, type, texture, and weight in the Paper menu to match the card

stock loaded in the tray.

• Print samples on the card stock being considered for use before buying large quantities.

• Specify the paper texture and weight from the tray settings to match the paper loaded in the tray.

• Preprinting, perforation, and creasing may significantly affect the print quality and cause jams or other paper feed

problems.

• Before loading the card stock on the tray, flex and fan the card stock to loosen them. Straighten the edges on a

level surface.

General information

31

Tips on using envelopes

• From the printer control panel, set the paper size, type, texture, and weight in the Paper menu to match the

envelopes loaded in the tray.

• Print samples on the envelopes being considered for use before buying large quantities.

• Use envelopes designed specifically for laser printers.

• For best performance, use envelopes made from 90‑g/m

• Use only new envelopes from undamaged packages.

• To optimize performance and minimize jams, do not use envelopes that:

– Have excessive curl or twist.

– Are stuck together or damaged in any way.

– Have windows, holes, perforations, cutouts, or embossing.

– Have metal clasps, string ties, or folding bars.

– Have an interlocking design.

– Have postage stamps attached.

– Have any exposed adhesive when the flap is in the sealed or closed position.

– Have bent corners.

– Have rough, cockle, or laid finishes.

• Adjust the width guides to fit the width of the envelopes.

• Before loading the envelopes on the tray, flex the stack of envelopes back and forth to loosen them, and

then fan them. Straighten the edges on a level surface.

2

(24‑lb) paper or 25% cotton.

7421

Note: A combination of high humidity (over 60%) and high printing temperature may wrinkle or seal envelopes.

Tips on using labels

• From the printer control panel, set the paper size, type, texture, and weight in the Paper menu to match the labels

loaded in the tray.

• Print samples before buying large quantities.

• For more information on label printing, characteristics, and design, see the Card Stock & Label Guide at

http://support.lexmark.com.

• Use labels designed specifically for laser printers.

• Do not use labels with slick backing material.

• Do not use labels with exposed adhesive.

• Use full label sheets. Partial sheets may cause labels to peel off during printing, resulting in a jam. Partial sheets

also contaminate the printer and the cartridge with adhesive, and could void the printer and toner cartridge
warranties.

• Before loading labels on the tray, flex and fan labels to loosen them. Straighten the edges on a level surface.

Tips on using letterhead

• Use letterhead specifically for laser printers.

• Print samples before buying large quantities.

• Before loading letterhead, flex and fan the sheets.

• When printing on letterhead, take note of the page orientation.

General information

32

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Source Printing Side with the

letterhead

Trays One‑sided Faceup Load the sheet with the

Two‑sided Facedown Load the sheet with the

Multipurpose feeder One‑sided Facedown Load the sheet with the

Two‑sided Faceup Load the sheet with the

Paper orientation

top edge toward the back
of the tray.

top edge toward the front
of the tray.

top edge on the left side.

top edge on the right side.

Tips on using transparencies

• From the printer control panel, set the paper size, type, texture, and weight in the Paper menu to match the

transparencies loaded in the tray.

• Print a test page on the transparencies being considered for use before buying large quantities.

• Use transparencies designed specifically for laser printers.

• Avoid getting fingerprints on the transparencies to prevent print quality problems.

• Before loading transparencies, flex and fan the sheets to prevent them from sticking together.

• When printing on large volumes of transparencies, make sure to print by batches of only up to 20 with an interval

of at least three minutes between batches, to prevent the transparencies from sticking together in the bin. You can
also remove transparencies from the bin by batches of 20.

Paper guidelines

Selecting the correct paper or specialty media reduces printing problems. For the best print quality, try a sample of the
paper or specialty media before buying large quantities.

Paper characteristics

The following paper characteristics affect print quality and reliability. Consider these factors before printing on them:

Weight

The printer trays can feed paper weights between 60–256 g/m2 (16–68‑lb) grain long paper. The multipurpose feeder
can feed paper weights between 60–256 g/m

not be stiff enough to feed properly, and may cause jams.

Note: Two‑sided printing is supported for 60–169 g/m

Curl

Curl is the tendency for paper to curl at its edges. Excessive curl can cause paper feeding problems. Curl can occur after
the paper passes through the printer, where it is exposed to high temperatures. Storing paper unwrapped in hot, humid,
cold, or dry conditions, even in the trays, can contribute to paper curling prior to printing and can cause feeding
problems.

2

(16–68‑lb) grain long paper. Paper lighter than 60 g/m2 (16 lb) might

2

(16–45‑lb) paper.

General information

33

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Smoothness

Paper smoothness directly affects print quality. If paper is too rough, toner cannot fuse to it properly. If paper is too
smooth, it can cause paper feeding or print quality issues. Always use paper between 100 and 200 Sheffield points.

Moisture content

The amount of moisture in paper affects both print quality and the ability of the printer to feed the paper correctly.
Leave paper in its original wrapper until it is time to use it. This limits the exposure of paper to moisture changes that
can degrade its performance.

Store paper in its original wrapper in the same environment as the printer for 24 to 48 hours before printing. Extend
the time several days if the storage or transportation environment is very different from the printer environment. Thick
paper may also require a longer conditioning period.

Grain direction

Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long, running the length of
the paper, or grain short, running the width of the paper.

2

For 60–256 g/m

(16–68‑lb) paper, grain long paper is recommended.

Fiber content

Most high‑quality xerographic paper is made from 100% chemically treated pulped wood. This content provides the
paper with a high degree of stability, resulting in fewer paper feeding problems and better print quality. Paper containing
fibers such as cotton can negatively affect paper handling.

Selecting paper

Using the appropriate paper prevents jams and helps ensure trouble‑free printing.

To help avoid paper jams and poor print quality:

• Always use new, undamaged paper.

• Before loading paper, know the recommended printable side of the paper. This information is usually indicated on

the paper package.

• Do not use paper that has been cut or trimmed by hand.

• Do not mix paper sizes, types, or weights in the same tray; mixing results in jams.

• Do not use coated papers unless they are specifically designed for electrophotographic printing.

Selecting preprinted forms and letterhead

• Use grain long for 60–256‑g/m

• Use only forms and letterhead printed using an offset lithographic or engraved printing process.

• Avoid paper with rough or heavily textured surfaces.

• Use inks that are not affected by the resin in toner. Inks that are oxidation‑set or oil‑based generally meet these

requirements; latex inks might not.

• Print samples on preprinted forms and letterheads considered for use before buying large quantities. This

determines whether or not the ink in the preprinted form or letterhead will affect print quality.

• When in doubt, contact your paper supplier.

2

(16–68‑lb) paper.

General information

34

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Using recycled paper and other office papers

As an environmentally conscientious company, Lexmark supports the use of recycled paper produced specifically for
use in laser (electrophotographic) printers.

While no blanket statement can be made that all recycled paper will feed well, Lexmark consistently tests papers that
represent recycled cut size copier papers available on the global market. This scientific testing is conducted with rigor
and discipline. Many factors are taken into consideration both separately and as a whole, including the following:

• Amount of post-consumer waste (Lexmark tests up to 100% post-consumer waste content.)

• Temperature and humidity conditions (Testing chambers simulate climates from all over the world.)

• Moisture content (Business papers should have low moisture: 4–5%.)

• Bending resistance and proper stiffness means optimum feeding through the printer.

• Thickness (impacts how much can be loaded into a tray)

• Surface roughness (measured in Sheffield units, impacts print clarity and how well toner fuses to the paper)

• Surface friction (determines how easily sheets can be separated)

• Grain and formation (impacts curling, which also influences the mechanics of how the paper behaves as it moves

through the printer)

• Brightness and texture (look and feel)

Recycled papers are better than ever; however, the amount of recycled content in a paper affects the degree of control
over foreign matter. And while recycled papers are one good path to printing in an environmentally responsible manner,
they are not perfect. The energy required to de-ink and deal with additives such as colorants and “glue” often generates
more carbon emissions than does normal paper production. However, using recycled papers enables better resource
management overall.

Lexmark concerns itself with the responsible use of paper in general based on life cycle assessments of its products. To
gain a better understanding of the impact of printers on the environment, the company commissioned a number of
life cycle assessments and found that paper was identified as the primary contributor (up to 80%) of carbon emissions
caused throughout the entire life of a device (from design to end-of-life). This is due to the energy-intensive
manufacturing processes required to make paper.

Thus, Lexmark seeks to educate customers and partners on minimizing the impact of paper. Using recycled paper is
one way. Eliminating excessive and unnecessary paper consumption is another. Lexmark is well-equipped to help
customers minimize printing and copying waste. In addition, the company encourages purchasing paper from suppliers
who demonstrate their commitment to sustainable forestry practices.

Lexmark does not endorse specific suppliers, although a converter’s product list for special applications is maintained.
However, the following paper choice guidelines will help alleviate the environmental impact of printing:

1 Minimize paper consumption.

2 Be selective about the origin of wood fiber. Buy from suppliers who carry certifications such as the Forestry

Stewardship Council (FSC) or the Program for the Endorsement of Forest Certification (PEFC). These certifications
guarantee that the paper manufacturer uses wood pulp from forestry operators that employ environmentally and
socially responsible forest management and restoration practices.

3 Choose the most appropriate paper for printing needs: normal 75 or 80 g/m

or recycled paper.

2

certified paper, lower weight paper,

General information

35

Unacceptable paper examples

Test results indicate that the following paper types are at risk for use with laser printers:

• Chemically treated papers used to make copies without carbon paper, also known as carbonless papers

• Preprinted papers with chemicals that may contaminate the printer

• Preprinted papers that can be affected by the temperature in the printer fuser

• Preprinted papers that require a registration (the precise location on the page) greater than ± 2.3 mm (± 0.9 in.),

such as optical character recognition (OCR) forms. In some cases, registration can be adjusted with a software
application to successfully print on these forms.)

• Coated papers (erasable bond), synthetic papers, thermal papers

• Rough-edged, rough or heavily textured surface papers or curled papers

• Recycled papers that fail EN12281:2002 (European testing)

• Paper weighing less than 60 g/m

2

(16 lb)

• Multiple part forms or documents

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For more information about Lexmark, go to
at the Environmental Sustainability link.

www.lexmark.com. General sustainability-related information can be found

Storing paper

Use these paper storage guidelines to help avoid jams and uneven print quality:

• For best results, store paper where the temperature is 21°C (70°F) and the relative humidity is 40 percent. Most

label manufacturers recommend printing in a temperature range of 18–24°C (65–75°F) with relative humidity
between 40 and 60 percent.

• Store paper in cartons, on a pallet or shelf, rather than on the floor.

• Store individual packages on a flat surface.

• Do not store anything on top of individual paper packages.

• Take paper out of the carton or wrapper only when you are ready to load it in the printer. The carton and wrapper

help keep the paper clean, dry, and flat.

General information

36

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Supported paper sizes, types, and weights

The following tables provide information on standard and optional paper sources and the sizes, types, and weights of
paper they support.

Note: For an unlisted paper size, select the closest larger listed size.

Paper sizes supported by the printer

Paper sizes supported by the trays and multipurpose feeder

Paper size Dimensions Standard

500‑sheet
tray (Tray

1)

A4 210 x 297 mm

(8.3 x 11.7 in.)

A5 148 x 210 mm

1 1 1

(5.8 x 8.3 in.)

A6 105 x 148 mm

XXXX X

(4.1 x 5.8 in.)

JIS B5 182 x 257 mm

(7.2 x 10.1 in.)

Letter 216 x 279 mm

(8.5 x 11 in.)

Legal 216 x 356 mm

(8.5 x 14 in.)

Executive 184 x 267 mm

(7.3 x 10.5 in.)

JIS B4 257 x 364 mm

(10.12 x 14.33 in.)

Standard
500‑sheet
tray (Tray

2)

2 x 500‑
sheet
tray

2500‑sheet
tray

3000‑sheet
tray

2 2 2

XX

XX

2 2

XX

XX

XX

Multipurpose

3

feeder

1

Two‑sided
printing

SRA3 320 x 450 mm

X

1

XX X

1

(12.6 x 17.7 in.)

A3 297 x 420 mm

XX

(11.69 x 16.54 in.)

12 x 18 305 x 457 mm

X

1

XX X

1

(12 x 18 in.)

1

Supported only in short‑edge orientation.

2

Supported only in long‑edge orientation.

3

Supports paper size without size sensing.

4

Supported only if the width is from 139.7 mm (5.5 in.) to 320 mm (12.6 in.), and the length is from 148 mm (5.83 in.) to

458 mm (18 in.).
Note: Banner is supported in the multipurpose feeder only if the width is up to 296.9 mm (11.69 in.), and the length is up

to 1219.2 mm (48 in.). Set the paper size to Universal.

General information

37

7421

Paper size Dimensions Standard

500‑sheet
tray (Tray

1)

11 x 17 279.4 x 431.8 mm

(11 x 17 in.)

Oficio 216 x 340 mm

(8.5 x 13.4 in.)

Folio 216 x 330 mm

(8.5 x 13 in.)

Statement 140 x 216 mm

1 1 1

(5.5 x 8.5 in.)

Universal 76.2 x 76.2 mm

(3 x 3 in.) to
320 x 1219.2 mm
(12.6 x 48 in.)

7 3/4
Envelope

9 Envelope 98 x 225 mm

98 x 191 mm
(3.9 x 7.5 in.)

XXXX X X

XXXX X

(3.9 x 8.9 in.)

Standard
500‑sheet
tray (Tray

2)

2 x 500‑
sheet
tray

2500‑sheet
tray

3000‑sheet
tray

XX

XX

XX

XX

XX

Multipurpose

3

feeder

Two‑sided
printing

4

X

10 Envelope 105 x 241 mm

XXXX X

X

(4.1 x 9.5 in.)

DL Envelope 110 x 220 mm

XXXX X

X

(4.3 x 8.7 in.)

C5 Envelope 162 x 229 mm

XXXX X

X

(6.4 x 9 in.)

B5 Envelope 176 x 250 mm

XXXX X

X

(6.9 x 9.8 in.)

Other
Envelope

98 x 162 mm
(3.9 x 6.3 in.) to

XXXX X

X

176 x 250 mm
(6.9 x 9.8 in.)

1

Supported only in short‑edge orientation.

2

Supported only in long‑edge orientation.

3

Supports paper size without size sensing.

4

Supported only if the width is from 139.7 mm (5.5 in.) to 320 mm (12.6 in.), and the length is from 148 mm (5.83 in.) to

458 mm (18 in.).
Note: Banner is supported in the multipurpose feeder only if the width is up to 296.9 mm (11.69 in.), and the length is up

to 1219.2 mm (48 in.). Set the paper size to Universal.

General information

38

Paper sizes supported by the ADF and scanner glass

Paper size Dimensions ADF Scanner glass

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Business card X

3 x 5 76.2 x 127 mm (3 x 5 in.) X

4 x 6 101.6 x 152.4 mm (4 x 6 in.)

2 1,2

1,2

1,2

A4 210 x 297 mm (8.3 x 11.7 in.)

A5 148 x 210 mm (5.8 x 8.3 in.)

A6 105 x 148 mm (4.1 x 5.8 in.)

1,2 1,2

2

JIS B5 182 x 257 mm (7.2 x 10.1 in.)

Letter 216 x 279 mm (8.5 x 11 in.)

Legal 216 x 356 mm (8.5 x 14 in.)

Executive 184 x 267 mm (7.3 x 10.5 in.)

JIS B4 257 x 364 mm (10.12 x 14.33 in.)

SRA3 320 x 450 mm (12.6 x 17.7 in.) XX

A3 297 x 420 mm (11.69 x 16.54 in.)

12 x 18 305 x 457 mm (12 x 18 in.) XX

11 x 17 279.4 x 431.8 mm (11 x 17 in.)

Oficio 216 x 340 mm (8.5 x 13.4 in.)

2 2

Folio 216 x 330 mm (8.5 x 13 in.)

Statement 140 x 216 mm (5.5 x 8.5 in.)

Universal 89 x 98.4 mm (3.50 x 3.87 in.) to

297 x 431.8 mm (11.69 x 17.00 in.)

2 2

7 3/4 Envelope 98 x 191 mm (3.9 x 7.5 in.) XX

9 Envelope 98 x 225 mm (3.9 x 8.9 in.) XX

10 Envelope 105 x 241 mm (4.1 x 9.5 in.) XX

DL Envelope 110 x 220 mm (4.3 x 8.7 in.) XX

C5 Envelope 162 x 229 mm (6.4 x 9 in.) XX

B5 Envelope 176 x 250 mm (6.9 x 9.8 in.) XX

Other Envelope 98 x 162 mm (3.9 x 6.3 in.) to 176 x 250 mm

XX

(6.9 x 9.8 in.)

Custom Scan Size [x]

1

Supported only in short‑edge orientation.

2

Supports paper size without size sensing.

2 2

General information

39

Paper types and weights supported by the printer

The printer engine supports 60–256‑g/m2 (16–68‑lb) paper weights.

Note: Labels, transparencies, envelopes, and card stock always print at reduced speed.

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Paper type Standard

500‑sheet
tray (Tray 1)

Plain Paper

Card Stock

Transparencies

Recycled

Glossy

Heavy Glossy

1

1

2

1

1

1

XX XXX

Standard
500‑sheet
tray (Tray 2)

2 x 500­sheet tray

2500‑sheet
tray

3000‑sheet
tray

Multipurpose
feeder

Labels X X X X X

Vinyl Labels X X X X X X

1

Bond

Envelope X X X X X

Rough Envelope X X X X X

Letterhead

1

ADF Scanner

Preprinted

Colored Paper

Light Paper

Heavy Paper

Rough Cotton

Custom Type

1

Paper is supported for two‑sided printing.

2

Print transparencies in batches of only up to 20 to prevent them from sticking together. For more information, see “Tips

1

1

1

1

1

1

on using transparencies” on page 33.

Paper sizes, types, and weights supported by the finishers

The printer engine supports 60–256 g/m2 (16–68‑lb) paper weights.

Note: When a finisher is installed, the standard finisher bin becomes the default bin even for print jobs that do not
require finishing.

General information

40

Supported paper sizes

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Paper size Staple finisher Staple, hole punch

finisher bin 1

A6

A5

3 3

3 3 2

JIS B5

JIS B4

Executive

Letter

A4

Legal

12 x 18

1 3 1

11 x 17

SRA3

1 3 1

A3

Staple, hole punch

Booklet finisher

finisher bin 2

XX

X

X

X

4

Oficio

Folio

Statement

Universal

1

Paper is supported only if the finisher stacks the paper but does not staple or punch holes in it.

2

Paper is supported only if the finisher stacks or staples the paper but does not punch holes in it.

3

Paper is supported but the finisher does not stack, staple, or punch holes in it.

4

Paper is supported only for 2‑hole punch.

5

Paper is supported only if the paper size is between 210 x 279.4 mm (8.27 x 11 in.) and 320 x 457.2 mm (12.6 x 18 in.).

1 3 3

1 3 3

1 3 3

3 1 5

X

X

X

Supported paper types

Paper type Staple finisher Staple, hole punch finisher Booklet finisher

Plain Paper

1

Print on transparencies by batches of only up to 20 to prevent them from sticking together. For more information, see

“Tips on using transparencies” on page 33.

2

Paper is supported only if the finisher stacks the paper but does not staple it.

3

Paper is supported only if the finisher stacks the paper but does not staple or punch holes in it.

4

Paper is supported only if the finisher punches holes or stacks the paper but does not staple it.

5

Paper is supported only if the finisher staples or folds the paper.

5

General information

41

Paper type Staple finisher Staple, hole punch finisher Booklet finisher

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Card Stock

Transparency

1

Recycled

Glossy

Heavy Glossy

Labels

Bond

Envelope

Rough Envelope

Letterhead

Preprinted

Colored Paper

Light Paper

2

2 3

2 5

2 5

2 4

2 3

2 3

2 3

X

X

X

X

X

X

5

5

5

5

5

Heavy Paper

Rough Cotton

Custom Type

1

Print on transparencies by batches of only up to 20 to prevent them from sticking together. For more information, see

2 4

2

X

X

5

“Tips on using transparencies” on page 33.

2

Paper is supported only if the finisher stacks the paper but does not staple it.

3

Paper is supported only if the finisher stacks the paper but does not staple or punch holes in it.

4

Paper is supported only if the finisher punches holes or stacks the paper but does not staple it.

5

Paper is supported only if the finisher staples or folds the paper.

Data security notice

1 The printer contains various types of memory that store printer and network settings, information from embedded

solutions, and user data.

The following are the types of memory and data that they store.

• Volatile memory—The printer uses standard random access memory (RAM) to buffer user data temporarily

during simple print and copy jobs.

• Non-volatile memory—The printer may use two forms of non-volatile memory: EEPROM and NAND (flash

memory). Both types are used to store the operating system, printer settings, network information, scanner
and bookmark settings, and embedded solutions.

General information

42

• Hard disk memory—The printer hard disk is designed for printer-specific functionality and cannot be used for

the long‑term storage of data that is not print-related. The hard disk can retain buffered user data from complex
print jobs, form data, and font data.

To erase volatile memory, turn off the printer.

To erase the non-volatile and printer hard disk memory, see

The following parts are capable of storing memory:

“Configuration Menu” on page 229.

• Printer control panel

• User interface controller card (UICC)

• Controller board

• Optional hard disk

Note: The control panel and controller board contain NVRAM.

2 After removing the old part, return it to your next level of support.

Tools required for service

• Flat-blade screwdrivers, various sizes

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• #1 Phillips screwdriver, magnetic

• #2 Phillips screwdriver, magnetic

• #2 Phillips screwdriver, magnetic short-blade

• Needle‑nose pliers

• Diagonal side cutters

• Spring hook

• Feeler gauges

• Analog or digital multimeter

• Flashlight (optional)

General information

43

7421

44

Diagnostic information

CAUTION—SHOCK HAZARD: For personal safety and to prevent damage to the printer, remove the power cord

from the electrical outlet before you connect or disconnect any cable, electronic board, or assembly. Disconnect
any connections between the printer and the computer or peripherals.

CAUTION—POTENTIAL INJURY: The printer weight is greater than 18 kg (40 lb) and requires two or more
trained personnel to lift it safely. Use the handholds on the side of the printer. Make sure your fingers are not
under the printer when you lift or set the printer on the floor or another stable surface.

CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot
component, allow the surface to cool before touching it.

Troubleshooting overview

Performing the initial troubleshooting check

• With the power cord unplugged from the electrical outlet, check that the cord is free from breakage, short circuits,

disconnected wires, or incorrect connections.

7421

• Make sure that the printer is properly grounded.

• Make sure that the power supply line voltage is within 10% of the rated line voltage.

• Make sure that the printer is securely installed on a level surface in a well‑ventilated area.

• Make sure that the temperature and relative humidity are within the specifications. See “Temperature

information” on page 737.

• Avoid locations that:

– Generate ammonia gas

– Are exposed to direct sunlight

– Are near open flames

– Are dusty

• Make sure that the recommended paper for this printer is used.

• Do a test print with paper from a newly opened package, and then check the result.

Fixing print quality issues

• “Initial print quality check” on page 46

• “Gray background check” on page 46

• “Blank pages check” on page 49

• “Solid black pages check” on page 50

• “Shadow images check” on page 52

• “Skewed print check” on page 54

• “Streaked horizontal or vertical lines check” on page 55

Diagnostic information

45

• “Toner smear check” on page 57

• “Toner specks check” on page 58

Initial print quality check

Before troubleshooting print problems, perform the following:

• Clean the photoconductor unit and printhead. For more information, see “Cleaning the charger and the printhead

lens” on page 537.

• Make sure that the printer is located in an area that follows the recommended operating environment and power

requirement specifications.

• Check the status of supplies. Replace supplies that are low or empty.

• Load 20‑lb plain letter or A4 paper. Make sure that the paper guides are properly set and locked. From the control

panel, set the paper size and type to match the paper loaded in the tray.

• Print and keep the menu settings page. The original menu settings page will be used to restore the customer’s

custom settings if necessary.

• Make sure that the Print resolution and Toner darkness on the menu settings page are set to their default values.

7421

• Check the transfer roller, toner cartridge, and transfer belt for damage, and replace if necessary.

• Print the print quality pages to see if the problem remains. Use tray 1 to test print quality problems. Look for

variations in the print from what is expected.

• Make sure that the correct print driver is used to prevent print problems. If the wrong print driver is installed,

incorrect characters could print, and the copy may not fit the page correctly.

Gray background check

Leading edge

ABCDE
ABCDE
ABCDE

Actions Yes No

Step 1

a Navigate to Settings > Allow Background Removal.

Make sure that the value is set to On.

b Navigate to Settings > Print Settings > Quality Menu.

Decrease the toner darkness (8 is the default value).

Trailing edge

Go to step 2. The problem is solved.

Does the problem remain?

Diagnostic information

46

Actions Yes No

7421

Step 2

Perform print quality calibration. Navigate to:
Settings > Print Settings > Quality Menu > Adjust Print Quality

Does the problem remain?

Step 3

Enter the Configuration menu, and then select Print Quality Pages.

Does the problem remain?

Step 4

Enter the Configuration menu, and then navigate to:
Automatic Image Stabilization > Auto Align Adj
Make sure that the value is set to On.

Does the problem remain?

Step 5

a Make sure that the sensor (toner density) is free of dust or debris.
b Reseat the sensor cable.

c Check the sensor and its cable for damage, and replace if necessary.

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

Go to step 5. The problem is solved.

Go to step 6. The problem is solved.

Does the problem remain?

Step 6

Observe the toner density solenoid.

Is it working properly?

Step 7

Check the solenoid and its actuator for wear or damage, and replace if
necessary.

Does the problem remain?

Step 8

a Make sure that the cartridge and photoconductor are installed.
b Make sure that the cartridge and photoconductor are supported.

Does the problem remain?

Step 9

Enter the Diagnostics menu, and then navigate to:
PRINTER SETUP > Printed Page Count

Does the page count reach 300K or 600K?

Go to step 7. The problem is solved.

Go to step 8. The problem is solved.

Go to step 9. The problem is solved.

Go to step 10. Go to step 11.

Diagnostic information

47

Actions Yes No

7421

Step 10

Check the following parts for damage or contamination, and replace if
necessary.

• Transfer roller

• Transfer belt

• Developer unit

Does the problem remain?

Step 11

a Make sure that the erase LED is properly installed.
b Check the LED for damage, and replace if necessary.

Does the problem remain?

Step 12

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the following cables are properly connected:

• High voltage charge cable

• High voltage transfer cable

• High voltage toner charge cable

b Make sure that the high voltage charge and developer contacts are

secure.

c Check the high voltage board cables and contacts for damage, and

replace if necessary.

Go to step 11. The problem is solved.

Go to step 12. The problem is solved.

Go to step 13. The problem is solved.

Does the problem remain?

Step 13

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the high voltage board cables are properly connected.
b Check the high voltage board for damage, and replace if necessary.

Does the problem remain?

Step 14

a Make sure that the printhead is properly installed.
b Check the printhead for damage, and replace if necessary. See

“Printhead removal” on page 275.

Does the problem remain?

Diagnostic information

Go to step 14. The problem is solved.

Contact the next level
of support.

The problem is solved.

48

Blank pages check

Actions Yes No

7421

Step 1

a Navigate to Settings > Allow Background Removal.

Make sure that the value is set to On.

b Navigate to Settings > Print Settings > Quality Menu.

Decrease the toner darkness (8 is the default value).

Does the problem remain?

Step 2

Enter the Configuration menu, and then select Print Quality Pages.

Does the problem remain?

Step 3

a Make sure that the cartridge and photoconductor are installed.
b Make sure that the cartridge and photoconductor are supported.

Does the problem remain?

Step 4

Enter the Diagnostics menu, and then navigate to:
PRINTER SETUP > Printed Page Count

Go to step 2. The problem is solved.

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

Go to step 5. Go to step 6.

Does the page count reach 300K or 600K?

Step 5

Check the following parts for damage or contamination, and replace if
necessary:

• Transfer roller

• Transfer belt

• Developer unit

Does the problem remain?

Diagnostic information

49

Go to step 6. The problem is solved.

Actions Yes No

7421

Step 6

a Make sure that the erase LED is properly installed.
b Check the LED for damage, and replace if necessary.

Does the problem remain?

Step 7

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the following cables are properly connected:

• High voltage charge cable

• High voltage transfer cable

• High voltage toner charge cable

b Make sure that the high voltage charge and developer contacts are

secure.

c Check the high voltage board cables and contacts for damage, and

replace if necessary.

Does the problem remain?

Step 8

Go to step 7. The problem is solved.

Go to step 8. The problem is solved.

Go to step 9. The problem is solved.

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the high voltage board cables are properly connected.
b Check the high voltage board for damage, and replace if necessary.

Does the problem remain?

Step 9

a Make sure that the printhead is properly installed.
b Check the printhead for damage, and replace if necessary. See

“Printhead removal” on page 275.

Does the problem remain?

Solid black pages check

Contact the next level
of support.

The problem is solved.

Diagnostic information

50

Actions Yes No

7421

Step 1

a Navigate to Settings > Allow Background Removal.

Make sure that the value is set to On.

b Navigate to Settings > Print Settings > Quality Menu.

Decrease the toner darkness (8 is the default value).

Does the problem remain?

Step 2

Enter the Configuration menu, and then select Print Quality Pages.

Does the problem remain?

Step 3

a Make sure that the cartridge and photoconductor are installed.
b Make sure that the cartridge and photoconductor are supported.

Does the problem remain?

Step 4

Enter the Diagnostics menu, and then navigate to:
PRINTER SETUP > Printed Page Count

Go to step 2. The problem is solved.

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

Go to step 5. Go to step 6.

Does the page count reach 300K or 600K?

Step 5

Check the following parts for damage or contamination, and replace if
necessary:

• Transfer roller

• Transfer belt

• Developer unit

Does the problem remain?

Step 6

a Make sure that the erase LED is properly installed.
b Check the LED for damage, and replace if necessary.

Does the problem remain?

Go to step 6. The problem is solved.

Go to step 7. The problem is solved.

Diagnostic information

51

Actions Yes No

7421

Step 7

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the following cables are properly connected:

• High voltage charge cable

• High voltage transfer cable

• High voltage toner charge cable

b Make sure that the high voltage charge and developer contacts are

secure.

c Check the high voltage board cables and contacts for damage, and

replace if necessary.

Does the problem remain?

Step 8

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the high voltage board cables are properly connected.
b Check the high voltage board for damage, and replace if necessary.

Go to step 8. The problem is solved.

Go to step 9. The problem is solved.

Does the problem remain?

Step 9

a Make sure that the printhead is properly installed.
b Check the printhead for damage, and replace if necessary. See

“Printhead removal” on page 275.

Does the problem remain?

Shadow images check

Leading edge

ABCD

ABCD

ABCD

ABCD

Trailing edge

Contact the next level
of support.

The problem is solved.

Diagnostic information

52

Actions Yes No

7421

Step 1

Make sure that the paper type and weight are supported.

Does the problem remain?

Step 2

Check the exit roller for wear, damage, or contamination, and replace if
necessary.

Does the problem remain?

Step 3

a Check the exit belt for proper tension, and adjust if necessary.
b Check the exit gear and belt for wear or damage, and replace if

necessary.

Does the problem remain?

Step 4

Check the transfer roller for wear, damage, or contamination, and replace
if necessary. See

Does the problem remain?

“Transfer roller removal” on page 284.

Go to step 2. The problem is solved.

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

Go to step 5. The problem is solved.

Step 5

a Make sure that the registration unit is properly installed.
b Make sure that the unit is clear of obstructions.

c Check the unit for damage, and replace if necessary. See “Registration

unit assembly removal” on page 314.

Does the problem remain?

Step 6

Check the sensor (fusing speed) for damage.

Is it free of damage?

Step 7

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Fusing speed

Does the sensor status change while toggling the sensor?

Step 8

a Reseat the fusing speed sensor cable.
b Check the cable for damage, and replace if necessary.

Go to step 6. The problem is solved.

Go to step 7. Go to step 9.

Go to step 8. Go to step 10.

Go to step 9. The problem is solved.

Does the problem remain?

Diagnostic information

53

Actions Yes No

) )

7421

Step 9

Replace the sensor (fusing speed). See

on page 317.

Does the problem remain?

Step 10

“Sensor (fusing speed) removal”

a Make sure that the fuser and its cable are properly connected.
b Check the fuser for damage, and replace if necessary. See “Fuser

removal” on page 279.

Does the problem remain?

Skewed print check

ABCDE

ABCDE

ABCDE

Go to step 10. The problem is solved.

Contact the next level
of support.

The problem is solved.

Actions Yes No

Step 1

Make sure that the following parts are properly installed:

Go to step 2. The problem is solved.

• Printhead

• Transfer belt

• Developer unit

• Photoconductor

Does the problem remain?

Step 2

Enter the Diagnostics menu, and then navigate to:
REGISTRATION > [source tray] > Print Quick Test

Does the problem remain?

Step 3

Check the registration roller for wear or damage, and replace if necessary.

Does the problem remain?

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

Diagnostic information

54

Actions Yes No

7421

Step 4

a Check the registration belt for proper tension, and adjust if necessary.
b Check the registration gear and belt for wear or damage, and replace

if necessary. See

“Registration unit gears removal” on page 320.

Does the problem remain?

Step 5

Check the following rollers for wear or damage, and replace if necessary:

“Registration unit belt removal” on page 319 and

• Pick roller

• Feed roller

• Separator roller

• Transport roller

Does the problem remain?

Step 6

a Check the roller belts for proper tension, and adjust if necessary.
b Check the roller gears and belts for wear or damage, and replace if

necessary.

Go to step 5. The problem is solved.

Go to step 6. The problem is solved.

Contact the next level
of support.

The problem is solved.

Does the problem remain?

Streaked horizontal or vertical lines check

Actions Yes No

Step 1

a Make sure that the photoconductor and printhead are clean.
b Make sure that the photoconductor and printhead are properly

installed.

c Check the photoconductor for damage, and replace if necessary.

Does the problem remain?

Go to step 2. The problem is solved.

Diagnostic information

55

Actions Yes No

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Step 2

a Make sure that the toner cartridge supply is not low.
b Check the photoconductor for contamination or damage, and replace

if necessary.

Does the problem remain?

Step 3

Enter the Diagnostics menu, and then navigate to:
PRINTER SETUP > Printed Page Count

Does the page count reach 300K or 600K?

Step 4

Check the following for damage:

• Developer unit

• Transfer belt

• Transfer roller

Replace the parts if necessary. See

284.

Does the problem remain?

“Transfer roller removal” on page

Go to step 3. The problem is solved.

Go to step 4. Go to step 5.

Go to step 5. The problem is solved.

Step 5

a Make sure that the erase LED is properly installed.
b Check the LED for damage, and replace if necessary.

Does the problem remain?

Step 6

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the following cables are properly connected:

• High voltage charge cable

• High voltage transfer cable

• High voltage toner charge cable

b Make sure that the high voltage charge and developer contacts are

secure.

c Check the high voltage board cables and contacts for damage, and

replace if necessary.

Does the problem remain?

Go to step 6. The problem is solved.

Go to step 7. The problem is solved.

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56

Actions Yes No

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Step 7

CAUTION—SHOCK HAZARD: Do not perform this step if the printer

is on.

a Make sure that the high voltage board cables are properly connected.
b Check the high voltage board for damage, and replace if necessary.

Does the problem remain?

Step 8

a Make sure that the printhead is properly installed.
b Check the printhead for damage, and replace if necessary. See

“Printhead removal” on page 275.

Does the problem remain?

Toner smear check

Leading edge

ABC

Go to step 8. The problem is solved.

Contact the next level
of support.

The problem is solved.

DEF

Trailing edge

Actions Yes No

Step 1

Make sure that the paper type and weight are supported.

Does the problem remain?

Step 2

Check the environment for proper humidity. Remove or reduce sources
of humidity if necessary.

Does the problem remain?

Step 3

a Make sure that the fuser and its cable are properly connected.
b Check the fuser for damage, and replace if necessary. See “Fuser

removal” on page 279.

Does the problem remain?

Go to step 2. The problem is solved.

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

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57

Actions Yes No

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Step 4

a Make sure that the induction heater is properly installed.
b Reseat the heater cable.

c Check the heater and its cable for damage, and replace if necessary.

“Induction heater removal” on page 279.

See

Does the problem remain?

Step 5

a Make sure that the induction heater power supply is properly

installed.

b Reseat the power supply cables.

c Check the power supply and its cables for damage, and replace if

necessary. See

page 351.

Does the problem remain?

“Induction heater power supply (IHPS) removal” on

Toner specks check

Go to step 5. The problem is solved.

Contact the next level
of support.

The problem is solved.

Actions Yes No

Step 1

Go to step 2. The problem is solved.

a Make sure that the photoconductor and printhead are clean.
b Make sure that the photoconductor and printhead are properly

installed.

c Check the photoconductor for damage, and replace if necessary.

Does the problem remain?

Step 2

Go to step 3. The problem is solved.

a Make sure that the cartridge and photoconductor are installed.
b Make sure that the cartridge and photoconductor are supported.

Does the problem remain?

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58

Actions Yes No

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Step 3

Enter the Diagnostics menu, and then navigate to:
PRINTER SETUP > Printed Page Count

Does the page count reach 300K or 600K?

Step 4

Check the following for damage:

• Developer unit

• Transfer belt

• Transfer roller

Replace the parts if necessary. See

284.

Does the problem remain?

Step 5

“Transfer roller removal” on page

a Make sure that the fuser and its cable are properly connected.
b Check the fuser for damage, and replace if necessary. See “Fuser

removal” on page 279.

Does the problem remain?

Go to step 4. Go to step 5.

Go to step 5. The problem is solved.

Contact the next level
of support.

The problem is solved.

Fixing image quality issues

Initial image quality check

Before troubleshooting image quality problems, perform the following:

• Perform a print test to ensure that the defect is not due to printer problem.

• Make sure that the document is placed correctly.

• Make sure that the image data is properly transmitted.

• Make sure that the scanner or ADF is free of debris or dust.

• Make sure all ADF and scanner cables are properly installed.

• Make sure that the scanner and ADF are properly aligned. For more information, see “ADF height adjustment” on

page 258.

• Make sure that the printer is placed on a level surface.

• Reset the scanner quality adjustment to the default values.

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59

Flatbed scanner image quality check

Actions Yes No

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Step 1

Check the ADF cushion for dust, crease marks, or damage, and replace if
necessary.

Does the problem remain?

Step 2

a Make sure that the scanner glass is free of debris or dust.
b Check the glass for proper alignment, and adjust if necessary.

c Check the glass for damage, and replace if necessary.

Does the problem remain?

Step 3

Reset the printer, and then check the scanner lamp for movement.

Does the scanner lamp move smoothly?

Step 4

a Make sure that the sensor (scanner lamp home) is installed properly.
b Check the sensor for damage, and replace if necessary.

Does the problem remain?

Go to step 2. The problem is solved.

Go to step 3. The problem is solved.

Go to step 7. Go to step 4.

Go to step 5. The problem is solved.

Step 5

Check the motor (scanner) for damage, and replace if necessary.

Does the problem remain?

Step 6

a Check the scanner motor belt for proper tension, and adjust if

necessary.

b Check the gear and belt for wear or damage, and replace if necessary.

Does the problem remain?

Step 7

a Make sure that the scanner lamp cable and connectors are properly

installed.

b Check the cable and connectors for damage, and replace if necessary.

Does the problem remain?

Step 8

a Make sure that the scanner lamp is properly installed.
b Check the lamp for damage, and replace if necessary.

Go to step 6. The problem is solved.

Go to step 7. The problem is solved.

Go to step 8. The problem is solved.

Go to step 9. The problem is solved.

Does the problem remain?

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60

Actions Yes No

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Step 9

Check the scanner CCD lens for proper alignment, and adjust if necessary.

Does the problem remain?

Step 10

a Make sure that the scanner sensor cable is properly installed.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 11

Check the scanner CCD lens for damage, and replace if necessary.

Does the problem remain?

Step 12

Check the scanner controller card for damaged pins, and replace if
necessary.

Does the problem remain?

Step 13

a Make sure that the scanner CCD cable is properly installed.
b Check the cable for damage, and replace if necessary.

Go to step 10. The problem is solved.

Go to step 11. The problem is solved.

Go to step 12. The problem is solved.

Go to step 13. The problem is solved.

Go to step 14. The problem is solved.

Does the problem remain?

Step 14

a Make sure that the ADF/scanner image controller board is properly

installed.

b Check the board for damaged pins, and replace if necessary.

Does the problem remain?

Paper jams

• “Avoiding jams” on page 62

• “Understanding jam messages and locations” on page 62

• “200 paper jams” on page 64

• “202 paper jams” on page 71

• “23y paper jams” on page 79

• “241–242 paper jams” on page 82

• “243–245 paper jams” on page 93

• “28y paper jams” on page 107

Contact the next level
of support.

The problem is solved.

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61

Avoiding jams

Load paper properly

•

Make sure that the paper lies flat in the tray.

• Do not remove a tray while the printer is printing.

• Do not load a tray while the printer is printing. Load it before printing, or wait for a prompt to load it.

• Do not load too much paper. Make sure that the stack height is below the maximum paper fill indicator.

• Do not slide paper into the tray. Load paper as shown in the illustration.

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• Make sure that the paper guides are properly positioned.

• Push the tray firmly into the printer after loading paper.

Use recommended paper

•

Use only recommended paper or specialty media.

• Do not load wrinkled, creased, damp, bent, or curled paper.

• Flex, fan, and straighten paper before loading it.

• Do not use paper that has been cut or trimmed by hand.

• Do not mix paper sizes, weights, or types in the same tray.

• Make sure that the paper size and type are set correctly on the Embedded Web Server or the computer.

Note: Depending on your operating system, access the Paper menu using Local Printer Settings Utility or Printer
Settings.

• Store paper according to manufacturer recommendations.

Understanding jam messages and locations

When a jam occurs, a message indicating the jam location and information to clear the jam appears on the printer
display. Open the doors, covers, and trays indicated on the display to remove the jam.

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62

Notes:

• When Jam Assist is set to On, the printer flushes blank pages or pages with partial prints after a jammed page

has been cleared. Check your printed output for blank pages.

• When Jam Recovery is set to On or Auto, the printer reprints jammed pages. However, the Auto setting reprints

jammed pages only if adequate printer memory is available.

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Area name

1 Automatic document feeder (ADF)

2 Door C

3 Door D

4 Door F

5 Trays

6 Door H

7 Finisher bins

8 Door J

9 Area G

Area name Control panel message What to do

ADF [x]-page jam, press latch at area E to open

ADF's top cover. [28y.xx]

Multipurpose feeder [x]‑page jam, clear jammed paper from the

multipurpose feeder. [200.xx]

Door C, trays [x]‑page jam, open door C and clear all

jammed paper. [2yy.xx]

[x]‑page jam, slide the 3000‑sheet tray and
open door C. [2yy.xx]

Open the ADF top door, and then remove
the jammed paper.

Remove the jammed paper from the
feeder.

Open door C, and then remove the jammed
paper.

Pull out the tray, and then remove the
jammed paper.

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63

Area name Control panel message What to do

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Door D, trays [x]‑page jam, open door D and clear all

jammed paper. [24y.xx]

[x]‑page jam, slide the 3000‑sheet tray and
open door D. [24y.xx]

Doors C and F [x]‑page jam, slide the 3000‑sheet tray and

open door F. [24y.xx]

Area G, doors C, J, and H, finisher
bin

Doors C and G, finisher bin [x]‑page jam, press latch beside door G and

Area G, doors C, J, and H, finisher
bin

[x] page jam, open doors G, H, and J and
clear jammed paper. [4yy.xx]

slide finisher to the left. Leave paper in bin.
[40y.xx]

[x]‑page jam, open door H and rotate knob
SD3 clockwise. Leave paper in bin. [426.xx–

428.xx]

200 paper jams

Open door D, and then remove the jammed
paper.

Pull out the tray, and then remove the
jammed paper.

Pull the 3000‑sheet tray, and then remove
the jammed paper from the side of the tray.

Open door F, and then remove the jammed
paper.

Open door G, and then remove the jammed
paper.

Open door H, and then remove the jammed
paper.

Slide the staple finisher to the left, and then
remove the jammed paper.

Open door H, and then remove the jammed
paper.

[x]‑page jam, clear jammed paper from multipurpose feeder. [200.xx]

1 Remove all paper from the multipurpose feeder.

2 Remove the jammed paper.

3 Open door C to remove any paper fragments.

Note: Make sure that door C does not hit any cable attached to the printer.

4 Close door C.

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64

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5 Flex the sheets back and forth to loosen them, and then fan them. Do not fold or crease the paper. Straighten the

edges on a level surface.

6 Reload the paper.

200 paper jam messages

Error code Description Action

200.06 The sensor (registration) did not detect the paper fed
from the MPF.

200.09 While feeding from the MPF, skew correction did not
complete at the registration roller.

200.16 The sensor (registration) did not detect the paper fed
from tray 1.

200.19 While feeding from tray 1, skew correction did not
complete at the registration roller.

200.91 The paper remains detected at the sensor
(registration) after the printer is turned on.

200.92 Paper size error was detected.

200.93 While feeding from tray 2, tray 3 or tray 4, skew
correction did not complete at the registration roller.

200.99 The sensor (registration) did not detect the paper fed
from tray 2, tray 3, tray 4, or tray 5.

See

“MPF jam service check” on page 68.

See

“Registration jam service check” on page 65.

Registration jam service check

Action Yes No

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the registration paper path, including the sensors, are free
of debris or dust.

Does the problem remain?

Diagnostic information

65

Go to step 2. Go to step 8.

Go to step 3. The problem is solved.

Action Yes No

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Step 3

Check the registration sensor actuator for damage, and replace if
necessary.

Does the problem remain?

Step 4

Check the sensor (registration).

Is it free of damage?

Step 5

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Registration

Does the sensor status change while toggling the sensor?

Step 6

a Reseat the registration sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 7

Replace the sensor (registration).

Go to step 4. The problem is solved.

Go to step 5. Go to step 7.

Go to step 8. Go to step 6.

Go to step 7. The problem is solved.

Go to step 8. The problem is solved.

Does the problem remain?

Step 8

Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 1

Does the leading edge of the paper reach the sensor (registration)?

Step 9

Check the tray 2 transport roller for damage, and replace if necessary.

Does the problem remain?

Step 10

Check the registration roller for wear or damage, and replace if necessary.

Does the problem remain?

Step 11

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Registration

Does the motor run?

Go to step 10. Go to step 9.

Go to step 10. The problem is solved.

Go to step 11. The problem is solved.

Go to step 15. Go to step 12.

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66

Action Yes No

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Step 12

a Reseat the registration motor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 13

a Check the registration belt for proper tension, and adjust if necessary.
b Check the registration gear and belt for wear or damage, and replace

if necessary. See

“Registration unit gears removal” on page 320.

Does the problem remain?

Step 14

Replace the motor (registration). See

page 371.

Does the problem remain?

Step 15

“Registration unit belt removal” on page 319 and

“Motor (registration) removal” on

a Check the feed belts for proper tension, and adjust if necessary.
b Check the feed gears and belts for wear or damage, and replace if

necessary.

Go to step 13. The problem is solved.

Go to step 14. The problem is solved.

Go to step 15. The problem is solved.

Go to step 16. The problem is solved.

Does the problem remain?

Step 16

Is tray 1 the paper source?

Step 17

a Check the tray 2 transport drive belt for proper tension, and adjust if

necessary.

b Check the tray 2 transport drive gear and belt for wear or damage, and

replace if necessary.

Does the problem remain?

Step 18

a Make sure that the paper feed drive assembly is properly installed.
b Make sure that the assembly is clear of obstructions.

c Check the assembly for damage, and replace if necessary. See “Feed

drive assembly removal” on page 376.

Does the problem remain?

Go to step 18. Go to step 17.

Go to step 18. The problem is solved.

Go to step 19. The problem is solved.

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67

Action Yes No

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Step 19

a Make sure that the registration transport assembly is properly

installed.

b Make sure that the assembly is clear of obstructions.

c Check the assembly for damage, and replace if necessary. See

“Registration transport assembly” on page 282.

Does the problem remain?

Step 20

Make sure that the blue screws and marked screws in the paper path area
are tightened.

Does the problem remain?

Step 21

Check the expansion controller board pins for damage, and replace if
necessary. See

Does the problem remain?

Step 22

Check the engine controller board pins for damage, and replace if
necessary. See

“Expansion controller board removal” on page 352.

“Engine controller board removal” on page 354.

Go to step 20. The problem is solved.

Go to step 21. The problem is solved.

Go to step 22. The problem is solved.

Contact the next level
of support.

The problem is solved.

Does the problem remain?

MPF jam service check

Action Yes No

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the MPF paper path, including the sensors, are free of
debris or dust.

Does the problem remain?

Step 3

Check the MPF empty sensor actuator for damage, and replace if
necessary.

Does the problem remain?

Go to step 2. Go to step 8.

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

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68

Action Yes No

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Step 4

Check the sensor (MPF empty).

Is it free of damage?

Step 5

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > MPF empty

Does the sensor status change while toggling the sensor?

Step 6

a Reseat the MPF empty sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 7

Replace the sensor (MPF empty).

Does the problem remain?

Step 8

a Make sure that the MPF lift plate, including the cam and gears, are

properly installed.

b Check the plate, including the cam and gears, for damage, and replace

if necessary.

Go to step 5. Go to step 7.

Go to step 6. Go to step 8.

Go to step 7. The problem is solved.

Go to step 8. The problem is solved.

Go to step 9. The problem is solved.

Does the problem remain?

Step 9

Observe the MPF lift plate solenoid.

Is it working properly?

Step 10

a Reseat the MPF lift plate solenoid cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 11

Check the MPF lift plate solenoid, including the actuator for wear or
damage, and replace if necessary. See

on page 301.

Does the problem remain?

“MPF lift plate solenoid removal”

Go to step 11. Go to step 10.

Go to step 11. The problem is solved.

Go to step 12. The problem is solved.

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69

Action Yes No

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Step 12

Observe the MPF lift plate clutch.

Is it working properly?

Step 13

a Reseat the MPF lift plate clutch cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 14

Check the MPF lift plate clutch for damage, and replace if necessary.

Does the problem remain?

Step 15

Check the sensor (MPF lift plate).

Is it free of damage?

Step 16

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > MPF lift plate position

Go to step 14. Go to step 13.

Go to step 14. The problem is solved.

Go to step 15. The problem is solved.

Go to step 16. Go to step 18.

Go to step 19. Go to step 17.

Does the sensor status change while toggling the sensor?

Step 17

a Reseat the MPF lift plate sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 18

Replace the sensor (MPF lift plate). See

on page 303.

Does the problem remain?

Step 19

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Paper feed

Does the motor run?

Step 20

“Sensor (MPF lift plate) removal”

a Reseat the feed motor cable.
b Check the cable for damage, and replace if necessary.

Go to step 18. The problem is solved.

Go to step 19. The problem is solved.

Go to step 23. Go to step 20.

Go to step 21. The problem is solved.

Does the problem remain?

Diagnostic information

70

Action Yes No

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Step 21

a Check the paper feed belt for proper tension, and adjust if necessary.
b Check the paper feed gear and belt for wear or damage, and replace

if necessary.

Does the problem remain?

Step 22

Replace the motor (feed). See

Does the problem remain?

Step 23

“Motor (feed) removal” on page 373.

a Make sure that the MPF is properly installed.
b Check the MPF for damage, and replace if necessary. See “MPF

removal” on page 297.

Does the problem remain?

Step 24

Check the engine controller board pins for damage, and replace if
necessary. See

“Engine controller board removal” on page 354.

Go to step 22. The problem is solved.

Go to step 23. The problem is solved.

Go to step 24. The problem is solved.

Contact the next level
of support.

The problem is solved.

Does the problem remain?

202 paper jams

[x]‑page jam, open door C and clear all jammed paper. [2yy.xx]

1 Open door C. Make sure that it does not hit any cable attached to the printer.

2 Remove the jammed paper from any of the following locations:

Note: Make sure that all paper fragments are removed.

CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot

component, allow the surface to cool before touching it.

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71

• Fuser area

• Below the fuser area

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• Duplex area

• Above the duplex area

Diagnostic information

72

3 Open the standard trays, and then locate the jammed paper.

4 Remove the jammed paper.

Note: Make sure that all paper fragments are removed.

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5 Close the trays and door C.

[x]‑page jam, slide the 3000‑sheet tray and open door C. [2yy.xx]

1 Slide the 3000‑sheet tray.

Diagnostic information

73

2 Open door C. Make sure that it does not hit any cable attached to the printer.

3 Remove the jammed paper from any of the following locations:

Note: Make sure that all paper fragments are removed.

CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot

component, allow the surface to cool before touching it.

• Fuser area

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• Below the fuser area

Diagnostic information

74

• Duplex area

• Above the duplex area

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4 Open the standard trays, and then locate the jammed paper.

5 Remove the jammed paper.

Note: Make sure that all paper fragments are removed.

6 Close the trays and door C.

7 Slide the 3000‑sheet tray back into place.

Diagnostic information

75

202 paper jam messages

Error code Description Action

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202.91 The paper remains detected at the sensor

(exit) after the printer is turned on.

202.93 The sensor (fuser exit) did not detect the

paper.

202.95 The paper remains detected at the sensor

(fuser exit) during a print job.

See

“Exit jam service check” on page 76.

Exit jam service check

Action Yes No

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the exit paper path, including the sensors, are free of
debris or dust.

Does the problem remain?

Go to step 2. Go to step 8.

Go to step 3. The problem is solved.

Step 3

Check the exit sensor actuator for damage, and replace if necessary. See

“Fuser exit sensor actuator removal” on page 288.

Does the problem remain?

Step 4

Check the sensor (exit).

Is it free of damage?

Step 5

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Paper exit

Does the sensor status change while toggling the sensor?

Step 6

a Reseat the exit sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Go to step 4. The problem is solved.

Go to step 5. Go to step 7.

Go to step 8. Go to step 6.

Go to step 7. The problem is solved.

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76

Action Yes No

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Step 7

Replace the sensor (exit).

Does the problem remain?

Step 8

Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 1

Does the leading edge of the paper reach the fuser?

Step 9

Does the leading edge of the paper reach the sensor (fuser exit)?

Step 10

Check the registration roller for wear or damage, and replace if necessary.

Does the problem remain?

Step 11

a Make sure that the registration transport assembly is properly

installed.

b Make sure that the assembly is clear of obstructions.

c Check the assembly for damage, and replace if necessary. See

“Registration transport assembly” on page 282.

Go to step 8. The problem is solved.

Go to step 9. Go to step 10.

Go to step 14. Go to step 13.

Go to step 11. The problem is solved.

Go to step 12. The problem is solved.

Does the problem remain?

Step 12

a Make sure that the registration unit is properly installed.
b Make sure that the unit is clear of obstructions.

c Check the unit for damage, and replace if necessary. See “Registration

unit assembly removal” on page 314.

Does the problem remain?

Step 13

Check the fuser for wear or damage, and replace if necessary. See

removal” on page 279.

Does the problem remain?

Step 14

Check the fuser exit clutch for wear or damage, and replace if necessary.

“Fuser removal” on page 279.

See

Does the problem remain?

“Fuser

Go to step 13. The problem is solved.

Go to step 14. The problem is solved.

Go to step 15. The problem is solved.

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77

Action Yes No

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Step 15

a Make sure that the duplex transport assembly is properly installed.
b Make sure that the assembly is clear of obstructions.

Does the problem remain?

Step 16

Check the assembly, including its exit roller and gears for damage, and
replace if necessary. See

page 285.

Does the problem remain?

Step 17

“Duplex transport assembly removal” on

a Check the fuser belt for proper tension, and adjust if necessary.
b Check the fuser gear and belt for wear or damage, and replace if

necessary.

Does the problem remain?

Step 18

a Make sure that the exit guide assembly is properly installed.
b Make sure that the assembly is clear of obstructions.

Go to step 16. The problem is solved.

Go to step 17. The problem is solved.

Go to step 18. The problem is solved.

Go to step 19. The problem is solved.

Does the problem remain?

Step 19

Check the exit guide assembly, including the rollers and diverter for wear
or damage, and replace if necessary.

Does the problem remain?

Step 20

Check the diverter solenoid for proper operation. Check the solenoid for
wear or damage, and replace if necessary.

Does the problem remain?

Step 21

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Redrive forward

Does the motor run?

Step 22

a Reseat the redrive motor cable.
b Check the cable for damage, and replace if necessary.

Go to step 20. The problem is solved.

Go to step 21. The problem is solved.

Go to step 25. Go to step 22.

Go to step 23. The problem is solved.

Does the problem remain?

Diagnostic information

78

Action Yes No

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Step 23

a Check the redrive belt for proper tension, and adjust if necessary.
b Check the redrive gear and belt for wear or damage, and replace if

necessary.

Does the problem remain?

Step 24

Replace the motor (redrive). See

365.

Does the problem remain?

Step 25

Make sure that the blue screws and marked screws in the paper path area
are tightened.

Does the problem remain?

Step 26

Check the expansion controller board pins for damage, and replace if
necessary. See

Does the problem remain?

“Expansion controller board removal” on page 352.

“Motor (redrive) removal” on page

Go to step 24. The problem is solved.

Go to step 25. The problem is solved.

Go to step 26. The problem is solved.

Go to step 27. The problem is solved.

Step 27

Check the engine controller board pins for damage, and replace if
necessary. See

Does the problem remain?

“Engine controller board removal” on page 354.

23y paper jams

23y paper jam messages

Error code Description Action

230.91 The paper remains detected at the sensor

(duplex pass through 1) after the printer is
turned on.

230.93 The sensor (duplex pass through 1) did not

detect the paper.

232.93 The paper remains detected at the sensor

(registration) during a duplex job.

232.99 Skew correction did not complete at the

registration roller during a duplex job.

See

Contact the next level
of support.

“Duplex jam service check” on page 80.

The problem is solved.

Diagnostic information

79

Duplex jam service check

Action Yes No

7421

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the duplex paper path, including the sensors, are free of
debris or dust.

Does the problem remain?

Step 3

Check the duplex pass through 1 and duplex pass through 2 sensor
actuator for damage, and replace if necessary. See

1 actuator removal” on page 290.

Does the problem remain?

Step 4

Check the sensor (duplex pass through 1) and sensor (duplex pass through

2) for damage, and replace if necessary. See

1) removal” on page 289 and “Sensor (duplex pass through 2) removal”

on page 318.

“Sensor (duplex pass through

“Duplex pass through

Go to step 2. Go to step 5.

Go to step 3. The problem is solved.

Go to step 4. The problem is solved.

Go to step 5. The problem is solved.

Does the problem remain?

Step 5

Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 1

Does the leading edge of the paper reach the sensor (duplex pass through

1)?

Step 6

Does the leading edge of the paper reach the sensor (registration)?

Step 7

a Check the duplex transport belt for proper tension, and adjust if

necessary.

b Check the duplex transport gear and belt for wear or damage, and

replace if necessary. See

page 292 and “Duplex transport gears removal” on page 292.

Does the problem remain?

“Duplex transport belt removal” on

Go to step 6. Go to step 7.

Go to step 14. Go to step 13.

Go to step 8. The problem is solved.

Diagnostic information

80

Action Yes No

7421

Step 8

a Make sure that the duplex transport assembly is properly installed.
b Make sure that the assembly is clear of obstructions.

Does the problem remain?

Step 9

Check the duplex transport assembly, including its rollers and guides for
damage, and replace if necessary. See

removal” on page 285.

Does the problem remain?

Step 10

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Duplex transport tray

Does the motor run?

Step 11

“Duplex transport assembly

a Reseat the duplex transport motor cable.
b Check the cable for damage, and replace if necessary.

Go to step 9. The problem is solved.

Go to step 10. The problem is solved.

Go to step 13. Go to step 11.

Go to step 12. The problem is solved.

Does the problem remain?

Step 12

Replace the motor (duplex transport). See

removal” on page 293.

Does the problem remain?

Step 13

“Motor (duplex transport)

a Make sure that the registration unit is properly installed.
b Check the unit, including the duplex pass through 2 and duplex exit

rollers for wear or damage, and replace if necessary. See

unit assembly removal” on page 314.

Does the problem remain?

Step 14

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Transport tray

Does the motor run?

Step 15

“Registration

a Reseat the transport motor cable.
b Check the cable for damage, and replace if necessary.

Go to step 13. The problem is solved.

Go to step 14. The problem is solved.

Go to step 18. Go to step 15.

Go to step 16. The problem is solved.

Does the problem remain?

Diagnostic information

81

Action Yes No

7421

Step 16

a Check the transport motor belt for proper tension, and adjust if

necessary.

b Check the transport motor gear and belt for wear or damage, and

replace if necessary.

Does the problem remain?

Step 17

Replace the motor (transport). See

page 368.

Does the problem remain?

Step 18

Check the expansion controller board pins for damage, and replace if
necessary. See

Does the problem remain?

Step 19

Check the engine controller board pins for damage, and replace if
necessary. See

“Expansion controller board removal” on page 352.

“Engine controller board removal” on page 354.

“Motor (transport) removal” on

Go to step 17. The problem is solved.

Go to step 18. The problem is solved.

Go to step 19. The problem is solved.

Contact the next level
of support.

The problem is solved.

Does the problem remain?

241–242 paper jams

[x]‑page jam, open door D and clear all jammed paper. [24y.xx]

1 Open door D, and then remove the jammed paper.

Note: Make sure that all paper fragments are removed.

Diagnostic information

82

2 Open the optional tray, and then locate the jammed paper.

3 Remove the jammed paper.

Note: Make sure that all paper fragments are removed.

7421

4 Close the tray and door D.

241–242 paper jam messages

Error code Description Action

241.11 The paper remains detected at the sensor

(tray 1 feed) after the printer is turned on.

241.91 The paper remains detected at the sensor

(tray 1 feed) after the printer is turned on.

242.21 The paper remains detected at the sensor

(tray 2 feed) after the printer is turned on.

242.26 The sensor (tray 2 transport) did not detect

the paper.

242.91 The paper remains detected at the sensor

(tray 2 transport) after the printer is turned
on.

242.93 The sensor (tray 2 transport) did not detect

the paper from tray 3.

242.93 The sensor (tray 2 transport) did not detect

the paper from the 3000‑sheet tray.

See

See

See

See

91.

“Tray 1 feed jam service check” on page 84.

“Tray 2 feed jam service check” on page 87.

“2 x 500‑sheet tray 3 jam service check” on page 98.

“3000‑sheet tray transport jam service check” on page

Diagnostic information

83

Tray 1 feed jam service check

Action Yes No

7421

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the tray 1 feed paper path, including the sensors, are free
of debris or dust.

Does the problem remain?

Step 3

Check the sensor (tray 1 paper feed).

Is it free of damage?

Step 4

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Tray 1 paper feed

Does the sensor status change while toggling the sensor?

Step 5

a Reseat the tray 1 paper feed sensor cable.
b Check the cable for damage, and replace if necessary.

Go to step 2. Go to step 7.

Go to step 3. The problem is solved.

Go to step 4. Go to step 6.

Go to step 7. Go to step 5.

Go to step 6. The problem is solved.

Does the problem remain?

Step 6

Replace the sensor (tray 1 paper feed).

Does the problem remain?

Step 7

Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 1

Does the leading edge of the paper reach the sensor (tray 1 paper feed)?

Step 8

Check the tray 1 feed, pick, and separator rollers for damage, and replace
if necessary.

Note: If the page count is over 50K, then clean the rollers.

Does the problem remain?

Go to step 7. The problem is solved.

Go to step 14. Go to step 8.

Go to step 9. The problem is solved.

Diagnostic information

84

Action Yes No

7421

Step 9

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Paper feed

Does the motor run?

Step 10

a Reseat the feed motor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 11

a Check the paper feed belt for proper tension, and adjust if necessary.
b Check the paper feed gear and belt for wear or damage, and replace

if necessary.

Does the problem remain?

Step 12

Replace the motor (feed). See

Does the problem remain?

“Motor (feed) removal” on page 373.

Go to step 13. Go to step 10.

Go to step 11. The problem is solved.

Go to step 12. The problem is solved.

Go to step 13. The problem is solved.

Step 13

a Check the tray 1 paper feed clutch for damage, and replace if

necessary.

b Reseat the clutch cable. Check the cable for damage, and replace if

necessary.

Does the problem remain?

Step 14

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Registration

Does the motor run?

Step 15

a Reseat the registration motor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Go to step 14. The problem is solved.

Go to step 18. Go to step 15.

Go to step 16. The problem is solved.

Diagnostic information

85

Action Yes No

7421

Step 16

a Check the registration belt for proper tension, and adjust if necessary.
b Check the registration gear and belt for wear or damage, and replace

if necessary. See

“Registration unit gears removal” on page 320.

Does the problem remain?

Step 17

Replace the motor (registration). See

page 371.

Does the problem remain?

Step 18

“Registration unit belt removal” on page 319 and

“Motor (registration) removal” on

a Make sure that the registration unit is properly installed.
b Make sure that the unit is clear of obstructions.

c Check the unit for damage, and replace if necessary. See “Registration

unit assembly removal” on page 314.

Does the problem remain?

Step 19

a Make sure that the paper feed drive assembly is properly installed.
b Make sure that the assembly is clear of obstructions.

c Check the assembly for damage, and replace if necessary. See “Feed

drive assembly removal” on page 376.

Go to step 17. The problem is solved.

Go to step 18. The problem is solved.

Go to step 19. The problem is solved.

Go to step 20. The problem is solved.

Does the problem remain?

Step 20

a Make sure that the paper feed unit is properly installed.
b Make sure that the unit is clear of obstructions.

c Check the unit for damage, and replace if necessary.

Does the problem remain?

Step 21

Make sure that the blue screws and marked screws in the paper path area
are tightened.

Does the problem remain?

Step 22

Check the engine controller board pins for damage, and replace if
necessary. See

Does the problem remain?

“Engine controller board removal” on page 354.

Go to step 21. The problem is solved.

Go to step 22. The problem is solved.

Contact the next level
of support.

The problem is solved.

Diagnostic information

86

Tray 2 feed jam service check

Action Yes No

7421

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the tray 2 feed paper path, including the sensors, are free
of debris or dust.

Does the problem remain?

Step 3

Check the sensor (tray 2 paper feed).

Is it free of damage?

Step 4

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Tray 2 paper feed

Does the sensor status change while toggling the sensor?

Step 5

a Reseat the tray 2 paper feed sensor cable.
b Check the cable for damage, and replace if necessary.

Go to step 2. Go to step 7.

Go to step 3. The problem is solved.

Go to step 4. Go to step 6.

Go to step 7. Go to step 5.

Go to step 6. The problem is solved.

Does the problem remain?

Step 6

Replace the sensor (tray 2 paper feed).

Does the problem remain?

Step 7

Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 2

Does the leading edge of the paper reach the sensor (tray 2 paper feed)?

Step 8

Does the leading edge of the paper reach the sensor (tray 2 transport)?

Go to step 7. The problem is solved.

Go to step 8. Go to step 9.

Go to step 15. Go to step 10.

Diagnostic information

87

Action Yes No

7421

Step 9

Check the tray 2 feed, pick, and separator rollers for damage, and replace
if necessary.

Note: If the page count is over 50K, then clean the rollers.

Does the problem remain?

Step 10

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Paper feed

Does the motor run?

Step 11

a Reseat the feed motor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 12

a Check the paper feed belt for proper tension, and adjust if necessary.
b Check the paper feed gear and belt for wear or damage, and replace

if necessary.

Go to step 10. The problem is solved.

Go to step 14. Go to step 11.

Go to step 12. The problem is solved.

Go to step 13. The problem is solved.

Does the problem remain?

Step 13

Replace the motor (feed). See

Does the problem remain?

Step 14

“Motor (feed) removal” on page 373.

a Make sure that the paper feed drive assembly is properly installed.
b Make sure that the assembly is clear of obstructions.

c Check the assembly for damage, and replace if necessary. See “Feed

drive assembly removal” on page 376.

Does the problem remain?

Step 15

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Tray 2 vertical transport

Does the motor run?

Step 16

a Reseat the tray 2 transport motor cable.
b Check the cable for damage, and replace if necessary.

Go to step 14. The problem is solved.

Go to step 15. The problem is solved.

Go to step 19 Go to step 16.

Go to step 17. The problem is solved.

Does the problem remain?

Diagnostic information

88

Action Yes No

7421

Step 17

a Check the transport drive belt for proper tension, and adjust if

necessary.

b Check the transport drive assembly for wear or damage, and replace

if necessary.

Does the problem remain?

Step 18

Replace the motor (tray 2 transport).

Does the problem remain?

Step 19

Check the tray 2 transport roller for damage, and replace if necessary.

Does the problem remain?

Step 20

a Make sure that the tray transport guide is properly installed.
b Make sure that the guide is clear of obstructions.

c Check the guide for damage, and replace if necessary.

Go to step 18. The problem is solved.

Go to step 19. The problem is solved.

Go to step 20. The problem is solved.

Go to step 21. The problem is solved.

Does the problem remain?

Step 21

a Make sure that the paper feed unit is properly installed.
b Make sure that the unit is clear of obstructions.

c Check the unit for damage, and replace if necessary.

Does the problem remain?

Step 22

Make sure that the blue screws and marked screws in the paper path area
are tightened.

Does the problem remain?

Step 23

Check the expansion controller board pins for damage, and replace if
necessary. See

Does the problem remain?

Step 24

Check the engine controller board pins for damage, and replace if
necessary. See

“Expansion controller board removal” on page 352.

“Engine controller board removal” on page 354.

Go to step 22. The problem is solved.

Go to step 23. The problem is solved.

Go to step 24. The problem is solved.

Contact the next level
of support.

The problem is solved.

Does the problem remain?

Diagnostic information

89

2 x 500‑sheet tray 3 transport jam service check

Action Yes No

7421

Step 1

Make sure that the paper path between tray 2 and tray 3, including the
sensors, are free of debris or dust.

Does the problem remain?

Step 2

a Enter the Diagnostics menu, and then navigate to:

INPUT TRAY TESTS > Feed Tests > Tray 3

b Check the movement and position of the paper.

Does the leading edge of the paper reach the sensor (tray 2 transport)?

Step 3

Check the sensor (tray 2 transport).

Is it free of damage?

Step 4

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Tray 2 transport

Does the sensor status change while toggling the sensor?

Go to step 2. The problem is solved.

Go to step 3. Go to step 7.

Go to step 4. Go to step 6.

Go to step 12. Go to step 5.

Step 5

a Reseat the sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 6

Replace the sensor (tray 2 transport).

Does the problem remain?

Step 7

Check the tray 3 transport roller for damage, and replace if necessary.
Note: If the page count is over 50K, then clean the rollers.

Does the problem remain?

Step 8

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > 2 x 500-Sheet Tray Motor Tests > Tray 3 transport

Does the motor run?

Go to step 6. The problem is solved.

Go to step 7. The problem is solved.

Go to step 8. The problem is solved.

Go to step 12. Go to step 9.

Diagnostic information

90

Action Yes No

7421

Step 9

a Reseat the motor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 10

a Check the tray 3 transport belt for proper tension, and adjust if

necessary.

b Check the transport gear and belt for wear or damage, and replace if

necessary. See

removal” on page 496.

Does the problem remain?

Step 11

Replace the motor (2 x 500‑sheet tray 3 transport). See

tray feed and transport motors removal” on page 487.

Does the problem remain?

Step 12

Check the 2 x 500‑sheet tray controller board pins for damage, and replace
if necessary. See

page 488.

“2 x 500-sheet tray 3 transport belts and gears

“2 x 500-sheet

“2 x 500-sheet tray controller board removal” on

Go to step 10. The problem is solved.

Go to step 11. The problem is solved.

Go to step 12. The problem is solved.

Contact the next level
of support.

The problem is solved.

Does the problem remain?

3000‑sheet tray transport jam service check

Action Yes No

Step 1

a Make sure that the tray is free of debris.
b Make sure that the tray is properly installed and aligned to the printer.

c Reseat the interface cable that is plugged into the 2500‑ or

2 x 500‑sheet tray.

d Reset the printer.

Does the problem remain?

Go to step 2. The problem is solved.

Diagnostic information

91

Action Yes No

7421

Step 2

a Remove the rear cover.
b Make sure that the sensor (3000-sheet tray set) is properly installed.

c Make sure that the sensor is free of debris or dust.

d Reseat the cable on the sensor and the cable CN5 on the controller

board.

e Check the sensor for damage.

Is it free of damage?

Step 3

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > 3000‑Sheet Tray Sensor Tests > Tray set

Does the sensor status change while toggling the sensor?

Step 4

Replace the sensor. See

page 517.

Does the problem remain?

Step 5

“Sensor (3000-sheet tray set) removal” on

a Reseat the cable on the rest of the sensors.
b Reseat the cable CN5 on the controller board.

c If necessary, reseat all the junction connectors on the cables.
d Make sure that the cables do not block the path of moving parts.
e Check the cables for damage, and replace if necessary.

Go to step 3. Go to step 4.

Go to step 5. Go to step 4.

Go to step 5. The problem is solved.

Go to step 6. The problem is solved.

Does the problem remain?

Step 6

a Reseat the cable on all of the motors and on the top door switch.
b Reseat the cables CN3 and CN4 on the controller board.

c If necessary, reseat all the junction connectors on the cables.
d Make sure that the cables do not block the path of moving parts.
e Check the cables for damage, and replace if necessary.

Does the problem remain?

Diagnostic information

92

Contact the next level
of support.

The problem is solved.

243–245 paper jams

[x]‑page jam, slide the 3000‑sheet tray and open door D. [24y.xx]

1 Slide the 3000‑sheet tray.

7421

2 Open door D, and then remove the jammed paper.

Note: Make sure that all paper fragments are removed.

3 Open the optional tray, and then locate the jammed paper.

4 Remove the jammed paper.

Note: Make sure that all paper fragments are removed.

Diagnostic information

93

5 Close the tray and door D.

6 Slide the 3000‑sheet tray back into place.

243 paper jam messages

Error code Description Action

7421

243.31 2 x 500‑sheet tray: The paper remains
detected at the sensor (tray 3 feed) after the
printer is turned on.

243.31 2500‑sheet tray: The paper remains detected
at the sensor (tray 3 feed) after the printer is
turned on.

243.36 2 x 500‑sheet tray: The sensor (tray 3
transport) did not detect the paper.

243.36 2500‑sheet tray: The sensor (tray 3
transport) did not detect the paper.

243.43 2 x 500‑sheet tray: The paper remains
detected at the sensor (tray 3 transport)
during a print job.

243.43 2500‑sheet tray: The paper remains detected
at the sensor (tray 3 transport) during a print
job.

243.91 2 x 500‑sheet tray: The paper remains
detected at the sensor (tray 3 transport) afte r
the printer is turned on.

243.91 2500‑sheet tray: The paper remains detected
at the sensor (tray 3 transport) after the
printer is turned on.

“2 x 500‑sheet tray 3 jam service check” on page 98.

See

“2500-sheet tray jam service check” on page 95.

See

See

“2 x 500‑sheet tray 3 jam service check” on page 98.

“2500-sheet tray jam service check” on page 95.

See

“2 x 500‑sheet tray 4 transport jam service check” on

See

page 102.

“2500-sheet tray jam service check” on page 95.

See

See

“2 x 500‑sheet tray 3 jam service check” on page 98.

See

“2500-sheet tray jam service check” on page 95.

Diagnostic information

94

244 paper jam messages

Error code Description Action

7421

244.41 The paper remains detected at the sensor
(tray 4 feed) after the printer is turned on.

244.46 The sensor (tray 4 transport) did not detect
the paper.

244.46 The sensor (3000-sheet tray feed) did not
detect the paper.

244.91 The paper remains detected at the sensor
(tray 4 transport) after the printer is turned
on.

244.91 The paper remains detected at the sensor
(3000‑sheet tray transport) after the printer
is turned on.

See

See

See

See

See

245 paper jam messages

Error code Description Action

245.56 The sensor (3000-sheet tray feed) did not
detect the paper.

245.91 The paper remains detected at the sensor
(3000‑sheet tray transport) after the printer
is turned on.

See

See

“2 x 500‑sheet tray 4 jam service check” on page 100.

“2 x 500‑sheet tray 4 jam service check” on page 100.

“3000‑sheet tray feed jam service check” on page 104.

“2 x 500‑sheet tray 4 jam service check” on page 100.

“3000‑sheet tray jam service check” on page 106.

“3000‑sheet tray feed jam service check” on page 104.

“3000‑sheet tray jam service check” on page 106.

2500-sheet tray jam service check

Actions Yes No

Step 1

a Enter the Diagnostics menu, and then navigate to:

EVENT LOG > Display Log

b Check the last digits of the error codes.

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the 2500-sheet tray feed paper path, incl uding the sensors,
are free of debris or dust.

Does the problem remain?

Step 3

Check the sensor (2500-sheet tray feed) for damage.

Is it free of damage?

Go to step 2. Go to step 7.

Go to step 3. The problem is solved.

Go to step 4. Go to step 6.

Diagnostic information

95

Actions Yes No

7421

Step 4

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > 2500-Sheet Tray Sensor Tests

Does the sensor status change while toggling the sensor?

Step 5

a Reseat the 2500-sheet tray feed sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 6

Replace the sensor (2500-sheet tray feed). See

feed) removal” on page 469.

Does the problem remain?

Step 7

“Sensor (2500‑sheet tray

a Enter the Diagnostics menu, and then navigate to:

INPUT TRAY TESTS > Feed Tests > Tray 3

b Observe the movement and position of the paper.

Go to step 13. Go to step 5.

Go to step 6. The problem is solved.

Go to step 7. The problem is solved.

Go to step 13. Go to step 8.

Does the leading edge of the paper reach the sensor (2500-sheet tray
feed)?

Step 8

Check the 2500‑sheet tray feed, pick, and separator rollers for wear or
damage, and replace if necessary. See

assembly removal” on page 457 and “2500-sheet tray pick assembly
removal” on page 457.

Note: If the page count is over 50K, then clean the rollers.

Does the problem remain?

Step 9

“2500-sheet tray paper feed

a Make sure that the motor (2500-sheet tray feed) is properly installed.
b Enter the Diagnostics menu, and then navigate to:

MOTOR TESTS > 2500-Sheet Tray Motor Tests > Tray feed

Does the motor run?

Step 10

a Reseat the 2500-sheet tray feed and transport motor cable.
b Check the cable for damage, and replace if necessary.

Go to step 9. The problem is solved.

Go to step 17. Go to step 10.

Go to step 11. The problem is solved.

Does the problem remain?

Diagnostic information

96

Actions Yes No

7421

Step 11

a Check the 2500-sheet tray feed and transport motor belt for proper

tension, and adjust if necessary.

b Check the 2500-sheet tray feed and transport motor belt and gears

for wear or damage, and replace if necessary.

Does the problem remain?

Step 12

Replace the motor (2500-sheet tray feed). See

feed) removal” on page 462.

Does the problem remain?

Step 13

Check the sensor (2500-sheet tray transport) for damage.

Is it free of damage?

Step 14

Enter the Diagnostics menu, and then navigate to:

SENSOR TESTS > 2500-Sheet Tray Sensor Tests

“Motor (2500‑sheet tray

Go to step 12. The problem is solved.

Go to step 13. The problem is solved.

Go to step 14. Go to step 16.

Go to step 17. Go to step 15.

Does the sensor status change while toggling the sensor?

Step 15

a Reseat the 2500-sheet tray transport sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 16

Replace the sensor (2500-sheet tray transport). See

tray transport) removal” on page 473.

Does the problem remain?

Step 17

Check the 2500-sheet tray controller board pins for damage, and replace
if necessary. See

page 444.

Does the problem remain?

“2500-sheet tray controller board removal” on

“Sensor (2500‑sheet

Go to step 16. The problem is solved.

Go to step 17. The problem is solved.

Contact the next level
of support.

The problem is solved.

Diagnostic information

97

2 x 500‑sheet tray 3 jam service check

Action Yes No

7421

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the tray 3 feed paper path, including the sensors, are free
of debris or dust.

Does the problem remain?

Step 3

Check the sensor (2 x 500‑sheet tray 3 feed).

Is it free of damage?

Step 4

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > 2 x 500-Sheet Tray Sensor Tests > Tray 3 feed

Does the sensor status change while toggling the sensor?

Step 5

a Reseat the sensor cable.
b Check the cable for damage, and replace if necessary.

Go to step 2. Go to step 7.

Go to step 3. The problem is solved.

Go to step 4. Go to step 6.

Go to step 13. Go to step 5.

Go to step 6. The problem is solved.

Does the problem remain?

Step 6

Replace the sensor (2 x 500‑sheet tray 3 feed). See

transport assembly sensors removal” on page 493.

Does the problem remain?

Step 7

Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 3

Does the leading edge of the paper reach the sensor (2 x 500‑sheet tray
3 paper feed)?

Step 8

Check the tray 3 feed, pick, and separator rollers for damage, and replace
if necessary.

Note: If the page count is over 50K, then clean the rollers.

Does the problem remain?

“2 x 500-sheet tray

Go to step 7. The problem is solved.

Go to step 13. Go to step 8.

Go to step 9. The problem is solved.

Diagnostic information

98

Action Yes No

7421

Step 9

Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > 2 x 500-Sheet Tray Motor Tests > Tray 3 feed

Does the motor run?

Step 10

a Reseat the motor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 11

a Check the paper feed belt for proper tension, and adjust if necessary.
b Check the paper feed gear and belt for wear or damage, and replace

if necessary.

Does the problem remain?

Step 12

Replace the motor (2 x 500‑sheet tray 3 transport). See

tray feed and transport motors removal” on page 487.

“2 x 500-sheet

Go to step 17. Go to step 10.

Go to step 11. The problem is solved.

Go to step 12. The problem is solved.

Go to step 13. The problem is solved.

Does the problem remain?

Step 13

Check the sensor (2 x 500‑sheet tray 3 transport).

Is it free of damage?

Step 14

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > 2 x 500-Sheet Tray Sensor Tests > Tray 3 transport

Does the sensor status change while toggling the sensor?

Step 15

a Reseat the sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 16

Replace the sensor (2 x 500‑sheet tray 3 transport). See

tray transport assembly sensors removal” on page 493.

Does the problem remain?

“2 x 500-sheet

Go to step 14. Go to step 16.

Go to step 17. Go to step 15.

Go to step 16. The problem is solved.

Go to step 17. The problem is solved.

Diagnostic information

99

Action Yes No

7421

Step 17

Check the 2 x 500‑sheet tray controller board pins for damage, and replace
if necessary. See

page 488.

Does the problem remain?

“2 x 500-sheet tray controller board removal” on

Contact the next level
of support.

2 x 500‑sheet tray 4 jam service check

Action Yes No

Step 1

Enter the Diagnostics menu, and then navigate to:
EVENT LOG > Display Log

Do most of the recent error codes end with a 1? (Example: 241.11, 200.91)

Step 2

Make sure that the tray 4 feed paper path, including the sensors, are free
of debris or dust.

Does the problem remain?

Go to step 2. Go to step 7.

Go to step 3. The problem is solved.

The problem is solved.

Step 3

Check the sensor (2 x 500‑sheet tray 4 feed).

Is it free of damage?

Step 4

Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > 2 x 500-Sheet Tray Sensor Tests > Tray 4 feed

Does the sensor status change while toggling the sensor?

Step 5

a Reseat the sensor cable.
b Check the cable for damage, and replace if necessary.

Does the problem remain?

Step 6

Replace the sensor (2 x 500‑sheet tray 4 feed). See

transport assembly sensors removal” on page 493.

Does the problem remain?

“2 x 500-sheet tray

Go to step 4. Go to step 6.

Go to step 13. Go to step 5.

Go to step 6. The problem is solved.

Go to step 7. The problem is solved.

Diagnostic information

100