Lexmark MX710, MX711, MX810, MX811, MX812 Service Manual

Lexmark MX81x & MX71x MFP

Machine Type 7463-03x, -23x, -43x, -63x,

-83x, -x96

Service Manual

• Start diagnostics

• Maintenance

• Safety and notices

• Trademarks

• Index

October 18, 2012 www.lexmark.com

Product information

Product name:
Lexmark MX71x and MX81x Series

Machine type:
7463

Model(s):
03x, 23x, 436, 636, 836

7463

Edition notice

October 18, 2012

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.

PrintCryption is a trademark of Lexmark International, Inc.
Mac and the Mac logo are trademarks of Apple Inc., registered in the U.S. and other countries.
PCL® is a registered trademark of the Hewlett-Packard Company. PCL is Hewlett-Packard Company’s designation of a set of printer commands

(language) and functions included in its printer products. This printer is intended to be compatible with the PCL language. This means the
printer recognizes PCL commands used in various application programs, and that the printer emulates the functions corresponding to the
commands.

All other trademarks are the property of their respective owners.

© 2012 Lexmark International, Inc.
All rights reserved.

P/N 12G3100

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Table of contents

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

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

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

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

Safety.......................................................................................................................................................24

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

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

General information...................................................................................29

Paper guidelines......................................................................................................................................29

Paper characteristics......................................................................................................................................... 29

Selecting paper .................................................................................................................................................30

Selecting preprinted forms and letterhead ......................................................................................................31

Using recycled paper and other office papers.................................................................................................. 31

Storing paper .................................................................................................................................................... 32

Data security notice.................................................................................................................................33

Tools required for service........................................................................................................................33

Diagnostic information...............................................................................35

Troubleshooting overview.......................................................................................................................35

Performing the initial troubleshooting check ...................................................................................................35

Error code number key ..................................................................................................................................... 36

Power‑on Reset (POR) sequence.............................................................................................................36

Using Safe Mode.....................................................................................................................................37

Fixing print quality issues........................................................................................................................37

Initial print quality check .................................................................................................................................. 38

Fixing base printer print quality issues .............................................................................................................38

Gray background on prints........................................................................................................................... 38

Horizontal voids appear on prints ................................................................................................................ 39

Print irregularities ........................................................................................................................................ 40

Printer is printing blank pages...................................................................................................................... 41

Printer is printing solid black pages.............................................................................................................. 42

Shadow images appear on prints .................................................................................................................43

Skewed print ................................................................................................................................................ 44

Streaked horizontal lines appear on prints ..................................................................................................45

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Streaked vertical lines appear on prints....................................................................................................... 47

Toner specks appear on prints ..................................................................................................................... 47

Vertical voids appear on prints .................................................................................................................... 48

Toner fog or background shading appears on prints ................................................................................... 49

Toner rubs off............................................................................................................................................... 50

Paper jams...............................................................................................................................................51

Understanding jam numbers and locations...................................................................................................... 52

200–201 paper jams .........................................................................................................................................53

Sensor (input) static jam service check............................................................................................................. 58

Sensor (input) early arriving jam service check ................................................................................................58

Sensor (input) never‑ or late‑arriving jam service check.................................................................................. 59

Sensor (input) late-leaving or did-not-clear jam service check......................................................................... 61

Main drive motor control jam service check ....................................................................................................62

Printhead motor control jam service check...................................................................................................... 63

Fuser drive motor control jam service check.................................................................................................... 63

Sensor (input) miscellaneous jam 1 service check............................................................................................ 63

Sensor (input) miscellaneous jam 2 service check............................................................................................ 64

Sensor (input) miscellaneous jam 3 service check............................................................................................ 64

202 paper jams ................................................................................................................................................. 65

Sensor (fuser exit) static jam service check ...................................................................................................... 67

Sensor (fuser exit) late-leaving jam service check ............................................................................................67

Sensor (fuser exit) late-arriving jam service check ...........................................................................................68

Sensor (narrow media) late arriving jam service check ....................................................................................69

Sensor (narrow media) static jam service check............................................................................................... 70

Sensor (fuser exit) miscellaneous jam service check ........................................................................................71

Fuser ID chip control jam service check............................................................................................................ 71

203 paper jams ................................................................................................................................................. 72

Upper redrive motor control jam service check ...............................................................................................73

230 paper jams ................................................................................................................................................. 73

Sensor (duplex path) static jam service check ..................................................................................................76

Sensor (duplex path) early arriving jam service check...................................................................................... 77

Sensor (duplex path) never‑ or late‑arriving jam service check ....................................................................... 78

Sensor (duplex path) late leaving jam service check ........................................................................................79

Duplex control jam service check .....................................................................................................................80

Sensor (duplex path) miscellaneous jam service check .................................................................................... 80

Sensor (input) never-arriving jam (exiting duplex) service check..................................................................... 81

235–239 paper jams .........................................................................................................................................81

24x paper jams.................................................................................................................................................. 82

Media feeder motor control service check....................................................................................................... 84

Media tray 1, tray pulled jam ........................................................................................................................... 85

Media feeder motor tray lift error service check ............................................................................................. 86

Sensor (input) never-arriving jam from tray 1 service check............................................................................ 86

250 paper jams ................................................................................................................................................. 87

Sensor (input) never-arriving jam from MPF media tray service check............................................................ 89

41y.xx paper jams ............................................................................................................................................. 91

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43y.xx paper jams ............................................................................................................................................. 92

451 paper jams ................................................................................................................................................. 93

455–457 paper jams .........................................................................................................................................94

User attendance messages (0-99.99)......................................................................................................97

User attendance messages (0‑99.99) ............................................................................................................... 97

Toner level sensing error check ...................................................................................................................... 102

Toner cartridge smart chip error service check .............................................................................................. 102

Imaging unit smart chip service check............................................................................................................ 103

Fuser unit smart chip service check................................................................................................................ 104

Printer hardware errors (100-199.99)...................................................................................................104

Printer hardware error messages(100‑199.99) ..............................................................................................105

Printhead ID service check.............................................................................................................................. 109

Printhead service check .................................................................................................................................. 109

Fuser drive motor service check .....................................................................................................................110

Fuser service check ......................................................................................................................................... 110

LVPS service check .......................................................................................................................................... 111

Toner level sensing service check ................................................................................................................... 111

Main drive motor service check...................................................................................................................... 112

Media feeder service check ............................................................................................................................ 112

Redrive motor service check........................................................................................................................... 113

Duplex motor service check............................................................................................................................ 113

Toner add motor service check ...................................................................................................................... 114

Main cooling fan service check ....................................................................................................................... 114

Cartridge cooling fan service check ................................................................................................................115

LVPS cooling fan service check ....................................................................................................................... 115

HVPS cooling fan service check....................................................................................................................... 116

Miscellaneous cooling fan service check ........................................................................................................116

ADF and scanner errors.........................................................................................................................117

ADF and scanner error messages (280‑295.20).............................................................................................. 117

ADF cover open jam........................................................................................................................................ 118

Sensor (ADF pick) static jam ........................................................................................................................... 118

Sensor (ADF pick) never arriving or late arriving jam service check ...............................................................119

Sensor (ADF pick) late leaving or not cleared jam service check .................................................................... 120

Sensor (ADF 1st scan) static jam service check............................................................................................... 122

Sensor (ADF 1st scan) never arriving or late arriving jam service check......................................................... 122

Sensor (ADF 1st scan) late leaving or not cleared jam.................................................................................... 124

Sensor (ADF 2nd scan) static jam.................................................................................................................... 125

Sensor (ADF 2nd scan) never arriving or late arriving jam service check .......................................................126

Sensor (ADF 2nd scan) late leaving or not cleared jam service check ............................................................127

Sensor (ADF media exit) static jam service check........................................................................................... 128

Sensor (ADF media exit) never arriving or late arriving jam service check.....................................................129

Sensor (ADF media exit) late leaving or not cleared jam service check.......................................................... 130

Sensor (multifeed detect) detected multiple sheets service check................................................................ 132

ADF and scanner error messages (84x) .......................................................................................................... 132

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Flatbed scanner and ADF communications failure service check ................................................................... 133

Flatbed scanner home position error service check ....................................................................................... 134

ADF elevator tray home position error service check..................................................................................... 135

ADF elevator tray motor stalled error service check ...................................................................................... 136

ADF elevator tray motor time-out error service check................................................................................... 136

Flatbed scanner CCD initialization error service check................................................................................... 137

ADF scanner CCD initialization error service check ........................................................................................ 138

Firmware and/or system electronics errors (900-999.99)....................................................................138

9xx error messages ......................................................................................................................................... 138

Communication failure with flatbed scanner and ADF................................................................................... 141

System software error service check.............................................................................................................. 142

NVRAM mismatch failure service check .........................................................................................................146

Input/output option hardware errors...................................................................................................147

3xx error messages (300‑399.99) ................................................................................................................... 147

250/550-sheet transport motor failure service check.................................................................................... 151

250/550-sheet media feeder failure service check ........................................................................................ 152

250/550-sheet controller board failure service check.................................................................................... 154

HCIT lift drive motor failure service check...................................................................................................... 155

HCIT lift plate failure service check................................................................................................................. 157

HCIT transport motor failure service check .................................................................................................... 159

Mailbox failure service check.......................................................................................................................... 161

Input/output option paper jam errors..................................................................................................162

Input option jam error messages (242‑245.99) .............................................................................................. 162

250/550-sheet media tray option jam service check...................................................................................... 174

HCIT jam service check ................................................................................................................................... 176

HCIT source jam service check........................................................................................................................ 178

4xx error messages (400‑499.99) ................................................................................................................... 180

Sensor (mailbox pass through) jam service check ..........................................................................................185

Mailbox diverter jam service check ................................................................................................................187

Sensor (finisher pass through) jam service check........................................................................................... 189

Finisher left tamper jam service check ...........................................................................................................191

Finisher right tamper jam service check .........................................................................................................192

Finisher ejector jam service check.................................................................................................................. 193

Finisher diverter jam service check ................................................................................................................ 194

Finisher paddle jam service check ..................................................................................................................195

Finisher tray holder jam service check ........................................................................................................... 196

Stapler carriage jam service check.................................................................................................................. 197

Sensor (media in stapler) jam service check................................................................................................... 198

Symptoms..............................................................................................................................................199

Base printer symptoms................................................................................................................................... 200

Network service check.................................................................................................................................... 200

Dead machine service check........................................................................................................................... 202

ADF/scanner symptoms.................................................................................................................................. 203

ADF media present service check ................................................................................................................... 203

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ADF not responding service check.................................................................................................................. 204

Option tray symptoms .................................................................................................................................... 204

250/550-sheet media type error service check ..............................................................................................205

250/550-sheet tray undetected service check ............................................................................................... 207

HCIT incorrect media error service check....................................................................................................... 208

HCIT media type error service check ..............................................................................................................210

HCIT undetected service check....................................................................................................................... 212

HCIT media low undetected service check .....................................................................................................213

Finisher side door error service check ............................................................................................................ 215

Mailbox incorrect bin exit service check......................................................................................................... 217

Finisher cartridge error service check ............................................................................................................ 218

Finisher undetected service check.................................................................................................................. 219

Finisher bin error service check ..................................................................................................................... 220

Finisher door undetected service check ........................................................................................................221

Stapler carriage failure service check .............................................................................................................222

Finisher bin media present error service check.............................................................................................. 223

Service menus..........................................................................................225

Using the printer control panel.............................................................................................................225

Using the printer control panel (MX81x)...............................................................................................226

Menus list..............................................................................................................................................227

Diagnostics menu..................................................................................................................................227

Entering diagnostics mode ............................................................................................................................. 228

REGISTRATION ................................................................................................................................................228

Scanner calibration ......................................................................................................................................... 229

PRINT TESTS .................................................................................................................................................... 229

Print Quality Pages (Prt Quality Pgs) ..........................................................................................................230

HARDWARE TESTS .......................................................................................................................................... 230

Panel Test ................................................................................................................................................... 230

Button Test................................................................................................................................................. 230

DRAM Test.................................................................................................................................................. 231

Serial Wrap Test .........................................................................................................................................231

USB HS Test Mode...................................................................................................................................... 232

Beacons Test .............................................................................................................................................. 233

DUPLEX TESTS ................................................................................................................................................. 233

Quick Test................................................................................................................................................... 233

Top Margin ................................................................................................................................................. 234

Sensor Test ................................................................................................................................................. 234

Motor Test.................................................................................................................................................. 234

Duplex Feed 1............................................................................................................................................. 235

Duplex Feed 2............................................................................................................................................. 235

INPUT TRAY TESTS .......................................................................................................................................... 235

Feed Tests .................................................................................................................................................. 235

Sensor Tests ............................................................................................................................................... 236

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OUTPUT BIN TESTS ......................................................................................................................................... 236

Feed Tests .................................................................................................................................................. 236

Feed To All Bins ..........................................................................................................................................237

Sensor Test ................................................................................................................................................. 237

Diverter Test............................................................................................................................................... 237

FINISHER TESTS ............................................................................................................................................... 238

Staple Test.................................................................................................................................................. 238

Hole Punch Test.......................................................................................................................................... 238

Feed Test (finisher)..................................................................................................................................... 238

Finisher Sensor Test ................................................................................................................................... 239

BASE SENSOR TEST.......................................................................................................................................... 239

DEVICE TESTS .................................................................................................................................................. 240

Quick Disk Test ...........................................................................................................................................240

Disk Test/Clean........................................................................................................................................... 240

Flash Test.................................................................................................................................................... 241

PRINTER SETUP ............................................................................................................................................... 241

Defaults ......................................................................................................................................................241

Printed Page Count..................................................................................................................................... 242

Permanent Page Count (Perm page count)................................................................................................ 242

Processor ID................................................................................................................................................ 242

Engine Setting [x] ....................................................................................................................................... 242

Edge to Edge............................................................................................................................................... 242

Parallel Strobe Adjustment (Par 1 Strobe Adj) ...........................................................................................242

EP SETUP......................................................................................................................................................... 243

EP Defaults ................................................................................................................................................. 243

Fuser Temperature (Fuser Temp)............................................................................................................... 243

Fuser Page Count ....................................................................................................................................... 243

Warm Up Time ...........................................................................................................................................243

Transfer ......................................................................................................................................................244

Print Contrast .............................................................................................................................................244

Charge Roll ................................................................................................................................................. 244

Gap Adjust.................................................................................................................................................. 244

Automatic Darkness Adjust (Auto Dark Adj) .............................................................................................. 244

REPORTS ......................................................................................................................................................... 245

Menu Settings Page.................................................................................................................................... 245

Installed Licenses........................................................................................................................................ 245

EVENT LOG...................................................................................................................................................... 245

Display Log ................................................................................................................................................. 245

Print Log ..................................................................................................................................................... 246

Clear Log..................................................................................................................................................... 246

Print Log Summary ..................................................................................................................................... 246

Exit Diags......................................................................................................................................................... 246

Configuration menu..............................................................................................................................247

Entering configuration mode.......................................................................................................................... 248

Roller Kit Counter Value.................................................................................................................................. 248

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Reset Roller Kit Counter.................................................................................................................................. 248

Reset Separator Roll and Pick Assembly Counter ........................................................................................... 248

USB Scan to Local............................................................................................................................................ 249

Print Quality Pages.......................................................................................................................................... 249

Reports ........................................................................................................................................................... 249

Menu Settings Page.................................................................................................................................... 249

Event Log .................................................................................................................................................... 250

Size sensing..................................................................................................................................................... 250

Panel Menus ...................................................................................................................................................250

PPDS Emulation .............................................................................................................................................. 250

Download Emuls ............................................................................................................................................. 251

Safe Mode....................................................................................................................................................... 251

Factory Defaults.............................................................................................................................................. 251

Energy Conserve .............................................................................................................................................251

Min copy memory........................................................................................................................................... 252

Fax low power support ...................................................................................................................................252

Num pad job assist.......................................................................................................................................... 252

Format fax storage.......................................................................................................................................... 252

ADF edge erase ............................................................................................................................................... 253

Scanner manual registration........................................................................................................................... 253

Disable scanner............................................................................................................................................... 254

Paper Prompts ................................................................................................................................................ 254

Envelope Prompts........................................................................................................................................... 255

Action for Prompts.......................................................................................................................................... 255

Jobs on Disk .................................................................................................................................................... 256

Disk Encryption ............................................................................................................................................... 256

Erase All Information on Disk.......................................................................................................................... 256

Wipe All Settings............................................................................................................................................. 257

Font Sharpening.............................................................................................................................................. 257

A4 Fuser .......................................................................................................................................................... 257

Require Standby.............................................................................................................................................. 257

A5 Loading ...................................................................................................................................................... 258

UI Automation ................................................................................................................................................ 258

LES Applications .............................................................................................................................................. 258

Key Repeat Initial Delay .................................................................................................................................. 259

Key Repeat Rate.............................................................................................................................................. 259

Clear Supply Usage History ............................................................................................................................. 259

Clear Custom Status........................................................................................................................................ 259

USB Speed....................................................................................................................................................... 260

Automatically Display Error Screens............................................................................................................... 260

USB PnP .......................................................................................................................................................... 260

Entering invalid engine mode................................................................................................................260

Entering recovery mode........................................................................................................................261

Accessing the Network SE menu...........................................................................................................261

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Service Engineer menu..........................................................................................................................261

Accessing the service engineer (SE) menu...................................................................................................... 261

Service engineer (SE) menu ............................................................................................................................261

Repair information...................................................................................263

Removal precautions.............................................................................................................................263

Handling ESD‑sensitive parts ..........................................................................................................................263

Controller board/control panel replacement ................................................................................................. 264

eSF solutions backup ...................................................................................................................................... 264

Ribbon cable connectors ................................................................................................................................ 265

Zero Insertion Force (ZIF) connectors ........................................................................................................ 265

Horizontal top contact connector ..............................................................................................................266

Horizontal bottom contact connector........................................................................................................ 269

Vertical mount contact connector ............................................................................................................. 272

Horizontal sliding contact connector ......................................................................................................... 275

Low Insertion Force (LIF) connector........................................................................................................... 278

Adjustments..........................................................................................................................................279

Media aligner roller adjustment .....................................................................................................................279

Polygon printhead mechanical registration adjustment ................................................................................ 281

Adjusting skew................................................................................................................................................ 283

ADF skew adjustment (front side) .................................................................................................................. 283

ADF skew adjustment (back side) ................................................................................................................... 284

ADF skew adjustment (deskew roller) ............................................................................................................ 285

Media squareness check................................................................................................................................. 286

Print skew correction...................................................................................................................................... 288

Copy skew correction ..................................................................................................................................... 289

Removal procedures.............................................................................................................................291

Base printer - cover removals...............................................................................................................291

Column left front cover removal (MX81x) ...................................................................................................... 291

Column left outer cover removal (MX81x) .....................................................................................................292

Column right inner cover removal.................................................................................................................. 294

Column right outer cover removal.................................................................................................................. 295

Left cover removal (MX71x)............................................................................................................................ 296

Left cover removal (MX81x)............................................................................................................................ 298

Left inner cover removal................................................................................................................................. 300

Rear door removal .......................................................................................................................................... 302

Rear lower cover removal............................................................................................................................... 304

Rear lower door removal (MX81x) ................................................................................................................. 305

Right cover removal (MX71x) ......................................................................................................................... 306

Right cover removal (MX81x) ......................................................................................................................... 307

Right inner cover removal (MX71x) ................................................................................................................308

Top cover removal .......................................................................................................................................... 309

Base printer- front removals.................................................................................................................309

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Duplex exit diverter removal ..........................................................................................................................309

Front door removal......................................................................................................................................... 311

Inner guide deflector removal ........................................................................................................................ 312

Laser printhead removal................................................................................................................................. 314

Media aligner roller removal ..........................................................................................................................317

Media turn guide removal .............................................................................................................................. 320

Media vertical guide removal .........................................................................................................................321

MPF feeder lift plate removal......................................................................................................................... 322

MPF pick roller removal.................................................................................................................................. 326

MPF tray removal ........................................................................................................................................... 327

Sensor (input) removal ................................................................................................................................... 329

Sensor (toner density) removal ...................................................................................................................... 330

Transfer roller left arm with cable removal.................................................................................................... 332

Transfer roller right arm removal ...................................................................................................................333

Transfer roller removal ................................................................................................................................... 336

Base printer - rear removals..................................................................................................................338

Duplex motor removal.................................................................................................................................... 338

Fuser removal ................................................................................................................................................. 340

Fuser access door removal ............................................................................................................................. 342

Left frame pivot removal ................................................................................................................................343

Right frame pivot removal .............................................................................................................................. 344

Sensor (rear door interlock) removal.............................................................................................................. 345

Base printer - top removals...................................................................................................................345

Cartridge door removal .................................................................................................................................. 346

Output bin sensor cover removal ...................................................................................................................349

Sensor (standard bin full) removal ................................................................................................................. 349

Standard bin cover removal (MX71x) .............................................................................................................350

Standard bin cover removal (MX81x) .............................................................................................................352

Upper redrive removal.................................................................................................................................... 354

Base printer - bottom removals............................................................................................................355

Duplex front flap removal............................................................................................................................... 356

Duplex rear flap removal ................................................................................................................................357

Left frame extension removal (MX71x) ..........................................................................................................358

Left frame extension removal (MX81x) ..........................................................................................................360

Media tray removal ........................................................................................................................................ 362

Pick roller assembly removal ..........................................................................................................................363

Sensor (duplex path) removal......................................................................................................................... 364

Sensor (tray 1 media out) removal .................................................................................................................365

Separator roller assembly removal................................................................................................................. 367

Right frame extension (MX71x) ...................................................................................................................... 367

Right frame extension removal (MX81x) ........................................................................................................369

Base printer - left removals...................................................................................................................371

Controller board removal ...............................................................................................................................372

Controller board access cover removal ..........................................................................................................373

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Controller board access shield removal.......................................................................................................... 374

Fuser drive motor removal .............................................................................................................................374

Main cooling fan removal ............................................................................................................................... 376

Main drive motor removal.............................................................................................................................. 377

Media feeder removal ....................................................................................................................................379

PCBA housing removal.................................................................................................................................... 380

Sensor (control panel interlock) removal ....................................................................................................... 382

Sensor (pick roller position) removal.............................................................................................................. 383

Toner add motor removal............................................................................................................................... 384

Base printer - right removals.................................................................................................................385

Cartridge cooling fan removal ........................................................................................................................ 386

Duplex cooling fan removal ............................................................................................................................387

HVPS removal ................................................................................................................................................. 388

LVPS removal ..................................................................................................................................................389

Power switch removal .................................................................................................................................... 392

Control panel removals.........................................................................................................................394

10‑inch display removal.................................................................................................................................. 394

10‑inch display (MX81x) removal ................................................................................................................... 398

Control panel removal (MX71x)...................................................................................................................... 399

Control panel removal (MX81x)...................................................................................................................... 402

Control panel board removal (MX71x) ...........................................................................................................406

Control panel board removal (MX81x) ...........................................................................................................407

Control panel front cover removal ................................................................................................................. 411

Control panel latch removal ........................................................................................................................... 413

Control panel left bezel removal (MX71x) ...................................................................................................... 414

Control panel right bezel removal (MX71x).................................................................................................... 416

Left control panel hinge removal.................................................................................................................... 417

Right control panel hinge removal.................................................................................................................. 420

Tilting display removal (7‑inch and 10‑inch)................................................................................................... 423

Standard bin LED board removal .................................................................................................................... 425

Control panel cover removal .......................................................................................................................... 426

Control panel buttons removal....................................................................................................................... 427

Control panel speaker removal....................................................................................................................... 428

USB cable removal .......................................................................................................................................... 429

ADF and scanner removals....................................................................................................................430

ADF/scanner assembly removal ..................................................................................................................... 430

ADF removals.................................................................................................................................................. 432

ADF assembly removal ............................................................................................................................... 432

ADF bottom door removal ......................................................................................................................... 433

ADF scanner CCD removal.......................................................................................................................... 435

ADF controller card removal ......................................................................................................................438

ADF door removal ...................................................................................................................................... 439

ADF feed belt removal................................................................................................................................ 440

ADF float plate with springs removal .........................................................................................................441

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ADF front cover removal ............................................................................................................................ 443

ADF front side drive parts pack removal ....................................................................................................444

ADF input tray removal ..............................................................................................................................445

ADF left hinge removal............................................................................................................................... 446

ADF left lower cover removal..................................................................................................................... 448

ADF lift tray removal .................................................................................................................................. 450

ADF pick roller cover removal ....................................................................................................................451

ADF pick roller removal ..............................................................................................................................452

ADF push button switch sensor removal.................................................................................................... 453

ADF rear cover removal.............................................................................................................................. 454

ADF rear side drive parts pack removal ..................................................................................................... 456

ADF right hinge removal............................................................................................................................. 456

ADF separation guide removal ...................................................................................................................458

ADF separator roller removal..................................................................................................................... 459

Sensor (ADF 1st scan) removal................................................................................................................... 461

ADF tray lift drive removal ......................................................................................................................... 462

Bin extension removal................................................................................................................................ 466

Deskew idler shaft removal........................................................................................................................ 466

First scan roll drive gear (40t) removal....................................................................................................... 467

Interrupt with flag sensor (ADF 2nd scan) removal ................................................................................... 468

Interrupt with flag sensor (ADF media exit) removal................................................................................. 469

Magnetic clutch removal............................................................................................................................ 470

Multifeed sensor parts kit removal ............................................................................................................471

Sensor (ADF media present) removal......................................................................................................... 473

Sensor (ADF pick) removal ......................................................................................................................... 474

Sensor (ADF skew detect) removal ............................................................................................................ 475

Separation roll drive gear (29t) removal ....................................................................................................475

Flatbed scanner removals............................................................................................................................... 476

Scanner unit removal .................................................................................................................................476

Flatbed scanner assembly removal ............................................................................................................478

Flatbed scanner front cover removal .........................................................................................................481

Flatbed glass cushion removal ................................................................................................................... 483

Flatbed scanner left cover removal topic................................................................................................... 484

Flatbed scanner right cover removal.......................................................................................................... 485

Flatbed scanner CCD removal ....................................................................................................................485

Flatbed scanner drive parts kit removal..................................................................................................... 489

Flatbed scanner glass removal ...................................................................................................................492

Flatbed scanner PCBA removal .................................................................................................................. 494

Flatbed tension pulley with belt removal................................................................................................... 495

250/550-sheet media tray option removals (MX710 and MX711).......................................................499

250/550-sheet media tray option removal..................................................................................................... 499

Media tray separation roller removal............................................................................................................. 500

Media tray assembly removal......................................................................................................................... 500

Media tray front cover removal...................................................................................................................... 500

Drawer pick roller removal ............................................................................................................................501

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Sensor (pick roll position) removal ................................................................................................................501

Drawer assembly rear cover removal............................................................................................................. 502

Drawer assembly left cover removal .............................................................................................................. 503

Drawer controller PCBA removal.................................................................................................................... 504

Drawer upper interface cable removal........................................................................................................... 505

Drawer lower interface cable removal ...........................................................................................................506

Drawer media feeder removal ....................................................................................................................... 507

Drawer transport motor removal ................................................................................................................... 509

Sensor (drawer pass through) removal .......................................................................................................... 510

Sensor (pick) removal ..................................................................................................................................... 512

High capacity input tray option removals (MX710 and MX711)...........................................................515

HCIT and drawer assembly removal ...............................................................................................................515

HCIT removal .................................................................................................................................................. 516

HCIT drawer assembly removal ......................................................................................................................516

HCIT separator roll assembly removal ............................................................................................................ 517

HCIT media guide removal.............................................................................................................................. 517

HCIT front cover removal................................................................................................................................ 518

HCIT pick arm assembly removal.................................................................................................................... 520

HCIT drawer assembly rear cover removal..................................................................................................... 521

HCIT drawer assembly left cover removal ......................................................................................................522

HCIT drawer assembly right cover removal.................................................................................................... 524

HCIT controller PCBA removal ........................................................................................................................526

HCIT top cover assembly removal .................................................................................................................. 527

HCIT lift drive motor removal .........................................................................................................................529

HCIT drawer assembly interface cable removal ............................................................................................. 531

Sensor (HCIT media low) with flag removal.................................................................................................... 532

Sensor (pick roll position) removal .................................................................................................................533

Sensor (HCIT pick) removal............................................................................................................................. 535

HCIT media feeder removal ............................................................................................................................ 536

550-sheet media tray option removals (MX810, MX811, and MX812).................................................538

550-sheet media tray and drawer assembly removal .................................................................................... 538

Media tray separation roller removal............................................................................................................. 539

Media tray assembly removal......................................................................................................................... 539

Media tray front cover removal...................................................................................................................... 539

Drawer pick roller removal ............................................................................................................................540

Sensor (pick roll position) removal ................................................................................................................540

Drawer assembly rear cover removal............................................................................................................. 541

Drawer assembly left cover removal .............................................................................................................. 542

Drawer controller PCBA removal.................................................................................................................... 543

Drawer upper interface cable removal........................................................................................................... 544

Drawer lower interface cable removal ...........................................................................................................545

Drawer media feeder removal ....................................................................................................................... 546

Drawer transport motor removal ................................................................................................................... 548

Sensor (drawer pass through) removal .......................................................................................................... 549

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Sensor (pick) removal ..................................................................................................................................... 551

High capacity input tray option removals (MX810, MX811, and MX812).............................................554

HCIT and drawer assembly removal ...............................................................................................................554

HCIT removal .................................................................................................................................................. 555

HCIT drawer assembly removal ......................................................................................................................555

HCIT separator roll assembly removal ............................................................................................................ 556

HCIT media guide removal.............................................................................................................................. 556

HCIT front cover removal................................................................................................................................ 557

HCIT pick arm assembly removal.................................................................................................................... 558

HCIT drawer assembly rear cover removal..................................................................................................... 559

HCIT drawer assembly left cover removal ......................................................................................................559

HCIT drawer assembly right cover removal.................................................................................................... 560

HCIT controller PCBA removal ........................................................................................................................561

HCIT top cover assembly removal .................................................................................................................. 562

HCIT lift drive motor removal .........................................................................................................................564

HCIT drawer assembly interface cable removal ............................................................................................. 566

Sensor (HCIT closed) with flag removal ..........................................................................................................567

Sensor (pick roll position) removal .................................................................................................................568

Sensor (HCIT pick) removal............................................................................................................................. 570

HCIT media feeder removal ............................................................................................................................ 571

Staple finisher/offset stacker option removals.....................................................................................573

Staple finisher/offset stacker option removal ................................................................................................ 573

Stapler/offset stacker rear door removal ....................................................................................................... 574

Stapler/offset stacker left cover removal .......................................................................................................576

Stapler/offset stacker top cover removal ....................................................................................................... 578

Stapler/offset stacker spring with string removal .......................................................................................... 579

Media stack flap (right) removal..................................................................................................................... 580

Media stack flap (left) removal....................................................................................................................... 581

Standard output bin LED removal................................................................................................................... 584

Sensor (finisher/stacker bin media present) removal .................................................................................... 585

Tamper motor (right) removal........................................................................................................................ 586

Tamper motor (left) removal.......................................................................................................................... 586

Tamper drive belt removal ............................................................................................................................. 587

Paddle drive motor removal ........................................................................................................................... 588

Stapler/offset stacker lower interface cable removal ....................................................................................589

Stapler/offset stacker controller PCBA removal ............................................................................................. 591

Sensor (bin full send) removal ........................................................................................................................ 592

Sensor (bin full receive) removal .................................................................................................................... 593

Stapler-unique FRU removals .........................................................................................................................595

Stapler right cover removal........................................................................................................................ 595

Stapler cartridge access door removal ....................................................................................................... 597

Stapler carriage assembly removal ............................................................................................................ 598

Sensor (cartridge door interlock) removal .................................................................................................599

Stapler door close limit switch removal ..................................................................................................... 599

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Mailbox option removals......................................................................................................................601

Mailbox assembly removal .............................................................................................................................601

Mailbox top cover removal............................................................................................................................. 601

Mailbox rear door removal............................................................................................................................. 602

Mailbox right cover removal........................................................................................................................... 604

Mailbox spring with string removal ................................................................................................................605

Mailbox solenoid removal .............................................................................................................................. 606

Mailbox left cover removal............................................................................................................................. 608

Mailbox controller PCBA removal................................................................................................................... 609

Sensor (mailbox divert motor) removal.......................................................................................................... 611

Mailbox lower interface cable removal .......................................................................................................... 612

Mailbox upper interface cable removal.......................................................................................................... 614

Mailbox divert motor removal........................................................................................................................ 614

Mailbox media bin full flag removal ...............................................................................................................616

Sensor (mailbox bin full receive) removal ...................................................................................................... 617

Mailbox belt removal...................................................................................................................................... 620

Mailbox output bin LED assembly removal .................................................................................................... 622

Component locations...............................................................................627

Connectors............................................................................................................................................627

Controller board....................................................................................................................................627

ADF controller board.............................................................................................................................638

Flatbed controller board.......................................................................................................................640

Maintenance............................................................................................643

Inspection guide....................................................................................................................................643

Scheduled maintenance........................................................................................................................645

Fuser maintenance kits................................................................................................................................... 645

Replacing fuser maintenance kits............................................................................................................... 645

Identifying the type of fuser used in the printer ........................................................................................ 645

Resetting the Roller Kit counter...................................................................................................................... 647

Preventive maintenance.......................................................................................................................648

Device‑specific preventive maintenance........................................................................................................ 648

Lubrication specification.......................................................................................................................648

Cleaning the printer..............................................................................................................................648

Cleaning the exterior of the printer................................................................................................................ 648

Cleaning the scanner glass.............................................................................................................................. 648

Cleaning the printhead lenses ........................................................................................................................ 649

Parts catalog............................................................................................650

Legend...................................................................................................................................................651

Assembly 1: Covers (MX71x).................................................................................................................653

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Assembly 2: Covers (MX81x).................................................................................................................655

Assembly 3: Paper path.........................................................................................................................659

Assembly 4: Fusers................................................................................................................................661

Assembly 5: Electronics.........................................................................................................................663

Assembly 6: Drive motors.....................................................................................................................667

Assembly 7: Frame................................................................................................................................669

Assembly 8: Control panel (MX71x)......................................................................................................671

Assembly 9: Control panel 10‑inch display (MX81x).............................................................................675

Assembly 10: Paper tray........................................................................................................................677

Assembly 11: ADF assembly..................................................................................................................679

Assembly 12: ADF covers.......................................................................................................................681

Assembly 13: ADF mechanical...............................................................................................................685

Assembly 14: ADF electronics...............................................................................................................687

Assembly 15: Flatbed scanner (MX710 and MX711).............................................................................691

Assembly 16: Flatbed scanner (MX810, MX811 and MX812)...............................................................695

Assembly 17: Input options (MX710 and MX711).................................................................................697

Assembly 18: Input options (MX810, MX811 and MX812)...................................................................699

Assembly 19: 250-sheet tray option (MX710 and MX711)...................................................................701

Assembly 20: 550-sheet tray option (MX710 and MX711)...................................................................703

Assembly 21: 550-sheet tray option (MX810, MX811, MX812)............................................................705

Assembly 22: High capacity input tray option 1 (MX710 and MX711)..................................................707

Assembly 23: High capacity input tray option 2 (MX710 and MX711)..................................................709

Assembly 24: High capacity input tray option 3 (MX810, MX811, MX812)..........................................711

Assembly 25: High capacity input tray option 4 (MX810, MX811, MX812)..........................................713

Assembly 26: Output options (MX810, MX811, and MX812)...............................................................715

Assembly 27: Staple finisher option 1...................................................................................................717

Assembly 28: Staple finisher option 2...................................................................................................719

Assembly 29: Mailbox option 1.............................................................................................................721

Assembly 30: Mailbox option 2.............................................................................................................723

Assembly 31: Offset stacker option 1....................................................................................................725

Assembly 32: Offset stacker option 2....................................................................................................727

Assembly 33: Miscellaneous.................................................................................................................729

Assembly 34: Power cords....................................................................................................................731

Appendix A: Printer specifications............................................................733

Power specifications..............................................................................................................................733

Operating clearances.............................................................................................................................733

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Acoustics...............................................................................................................................................734

Environment..........................................................................................................................................734

Processor...............................................................................................................................................735

Security reset jumper............................................................................................................................735

Printer skew specifications....................................................................................................................736

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

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

Input options supported.......................................................................................................................739

Output options supported.....................................................................................................................739

Physical specifications (options)............................................................................................................739

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

Models MX81x and MX71x paper path rollers and sensors..................................................................742

Models MX81x and MX71x sensors......................................................................................................743

Functions of main components.............................................................................................................743

Media tray assembly....................................................................................................................................... 743

Rear media guide............................................................................................................................................ 744

Side media guide............................................................................................................................................. 744

Media tray.............................................................................................................................................744

Media feeder .................................................................................................................................................. 744

Sensor (media size) ......................................................................................................................................... 744

Sensor (pick roller position) ............................................................................................................................ 744

Multi-purpose feeder (MPF).................................................................................................................745

MPF pick roller................................................................................................................................................ 745

MPF pick solenoid........................................................................................................................................... 745

Registration...........................................................................................................................................745

Sensor (input) ................................................................................................................................................. 746

Duplex...................................................................................................................................................746

Sensor (duplex path)....................................................................................................................................... 746

Transfer.................................................................................................................................................746

Transfer roller ................................................................................................................................................. 746

Printhead...............................................................................................................................................747

Fuser components.................................................................................................................................748

Heat belt (belt fuser)....................................................................................................................................... 749

Pressure roll.................................................................................................................................................... 749

Thermistor ...................................................................................................................................................... 749

Sensor (fuser exit)........................................................................................................................................... 749

Exit.........................................................................................................................................................750

Sensor (standard bin full)................................................................................................................................ 750

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Drive......................................................................................................................................................750

Main drive motor assembly ............................................................................................................................ 750

Fuser drive motor assembly ........................................................................................................................... 750

Toner add motor assembly............................................................................................................................. 751

Redrive motor assembly ................................................................................................................................. 751

Sensors..................................................................................................................................................752

Electrical components and controller...................................................................................................753

Sensor (control panel door interlock)............................................................................................................. 753

Sensor (rear door interlock)............................................................................................................................ 753

Main cooling fan .............................................................................................................................................753

Cartridge cooling fan....................................................................................................................................... 753

Duplex cooling fan .......................................................................................................................................... 753

LVPS board assembly ...................................................................................................................................... 754

HVPS board assembly .....................................................................................................................................754

Controller board ............................................................................................................................................. 754

Xerographic and print cartridge components.......................................................................................754

Document scanning at ADF...................................................................................................................758

Document scanning at platen...............................................................................................................758

Names and functions of components...................................................................................................759

Flatbed scanner .............................................................................................................................................. 759

ADF components ............................................................................................................................................ 761

Supported paper sizes, types, and weights...........................................................................................763

Paper types and weights supported by the printer ........................................................................................763

Paper sizes supported by the printer.............................................................................................................. 764

Paper sizes, types, and weights supported by the optional finishers............................................................. 765

Output options theory...........................................................................................................................767

Mailbox theory................................................................................................................................................ 767

Staple finisher theory...................................................................................................................................... 768

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

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

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

Part number index...................................................................................781

Part name index.......................................................................................793

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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 10 milliwatt gallium arsenide 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 10-Milliwatt-Gallium-Arsenid-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 arséniure de gallium 10 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 ad arseniuro di gallio a 10milliwatt 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

7463

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 arseniuro de galio de 10 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,
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 arsenieto de gálio de 10 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.

para produtos a laser de Classe I (1) e, nos demais países, foi certificada como produto a laser de Classe

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), een galliumarsenide laser met een nominaal vermogen van 10 milliwatt en een golflengtebereik van 787-800
nanometer. Het lasersysteem en de printer zijn zodanig ontworpen dat gebruikers nooit blootstaan aan laserstraling
die hoger
door de gebruiker of voorgeschreven servicewerkzaamheden.

is dan het toegestane niveau voor klasse I-apparaten, tijdens normaal gebruik, onderhoudswerkzaamheden

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 10 milliwatt galliumarsenid-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.

Notices and safety information

22

7463

Luokan I lasertuotteita ei pidetä haitallisina. Tulostimen sisällä on luokan IIIb (3b) laser, joka on nimellisteholtaan 10
mW:n galliumarsenidilaser 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.

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 10 mW
galliumarseniklaser 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 10 milliwatt galliumarsenid-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 es un arsenur de galió de 10 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 7 ミリワットのガリウムヒ素レーザ
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.

Notices and safety information

23

7463

Class I 레이저 제품은 위험한 제품으로 간주되지 않습니다. 프린터에는 655-675 나노미터의 파장 영역에서 작동
하는 공칭 7 밀리와트 갈륨 비소 레이저인 클래스 IIIb(3b) 레이저가 내부에 포함되어 있습니다. 레이저 시스템
과 프린터는 정상적인 작동, 사용자 유지 관리 또는 사전 설명된 서비스 조건에는 사람에게 클래스 I 수준 이상
의 레이저 방사가 노출되지 않도록 설계되었습니다.

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。

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
7 毫瓦的砷化镓激光，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 7 百萬分之
一瓦特 (milliwatt)、波長 787 至 800 億分之一米 (nanometer) 的鎵砷放射線 (gallium arsenide laser)。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

Lithium warning

CAUTION—POTENTIAL INJURY: This product contains a lithium battery. THERE IS A RISK OF EXPLOSION IF THE

BATTERY IS REPLACED BY AN INCORRECT TYPE. Discard used batteries according to the battery manufacturer’s
instructions and local regulations.

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.

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
pièces de rechange non agréées.

particuliers.

• 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.

Le fabricant n'assume aucune responsabilité concernant la sécurité en cas d'utilisation de

Notices and safety information

24

7463

ATTENTION : Ce symbole indique la présence d'une tension dangereuse dans la partie du produit sur laquelle vous

travaillez. Débranchez le produit avant de commencer ou faites preuve de vigilance si l'exécution de la tâche exige que
le produit reste sous tension.

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:

prima di iniziare o usare cautela se il prodotto deve essere alimentato per eseguire l'intervento.

Questo simbolo indica la presenza di tensione pericolosa nell'area del prodotto. Scollegare il prodotto

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.

ACHTUNG: Dieses Symbol weist auf eine gefährliche elektrische Spannung hin, die in diesem Bereich des Produkts
auftreten
wenn das Produkt für die Ausführung der Arbeiten an den Strom angeschlossen sein muß.

kann.

Ziehen Sie vor den Arbeiten am Gerät den Netzstecker des Geräts, bzw. arbeiten Sie mit großer Vorsicht,

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:

este símbolo indica que el voltaje de la parte del equipo con la que está t

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.

• 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.

Notices and safety information

25

7463

CUIDADO: Quando vir este símbolo, existe a possível presença de uma potencial tensão perigosa na zona do produto

em que está a trabalhar. Antes de começar, desligue o produto da tomada eléctrica ou seja cuidadoso caso o produto
tenha de estar ligado à corrente eléctrica para realizar a tarefa necessária.

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.

PRECAUCIÓ: aquest símbol indica que el voltatge de la part de l'equip amb la qual esteu t

Notices and safety information

26

7463

Preface

This manual contains maintenance procedures for service personnel.

It is divided into the following chapters:

• General information contains a general description of the printer and the maintenance approach used to repair it.

Special tools and test equipment, as well as general environmental and safety instructions, are discussed.

• Diagnostic information contains diagnostic aids you can use to isolate failing field replaceable units. These

diagnostic aids include error code tables, symptom tables, and service checks.

• Diagnostic aids contains descriptions of the printer interface, the user and service menus, and the basic theory of

printer operation.

• Repair information provides instructions for making printer adjustments and removing and installing FRUs.

• Connector locations uses illustrations to identify the connector locations.

• Preventive maintenance

• Parts catalog contains illustrations and part numbers for individual FRUs.

• Appendix A—Contains service tips and detailed information about the product, including the basic theory of printer

operation.

• Appendix B—Contains representative print samples.

contains the lubrication specifications and recommendations to prevent problems.

Service manual conventions

Note: A note provides additional information.

Warning—Potential Damage: A warning identifies something that might damage the product hardware or software.

This service manual uses several different types of caution statements:

CAUTION—POTENTIAL INJURY: A caution identifies something that might cause the service technician harm.

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.

Preface

27

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28

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General information

• “Paper guidelines” on page 29

•

“Data security notice” on page 33

• “Tools required for service” on page 33

The LexmarkTM MX71x and MX81x are network‑capable, multi‑function laser printers that print monochrome print
jobs. The operator panel is touch‑sensitive and lets the user adjust the viewing angle. 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

MX710de 3 Laser Mono MFP Duplex, Network, Touch panel 7463‑032

MX710de 4 Laser Mono MFP Duplex, Network, Modem, Touch panel 7463‑036

MX710dhe 4 Laser Mono MFP Duplex, Network, Modem, Touch panel, HD7463‑037

MX711de 3 Laser Mono MFP Duplex, Network, Touch panel 7463‑232

MX711de 4 Laser Mono MFP Duplex, Network, Modem, Touch panel 7463‑236

MX711dhe 4 Laser Mono MFP Duplex, Network, Modem, Touch panel, HD7463‑237

MX810de Laser Mono MFP Duplex, Network, Modem, Touch panel, HD7463‑436

MX811de Laser Mono MFP Duplex, Network, Modem, Touch panel, HD7463‑636

MX812de Laser Mono MFP Duplex, Network, Modem, Touch panel, HD7463‑836

The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the error
code charts, symptom index, and service checks to determine the symptom and then repair the failure. After you
complete the repair, perform tests as needed to verify the repair.

To begin diagnosing a problem, go to “Diagnostic information” on page 35. See “Repair information” on page 263
for information about removing and reinstalling parts. See “Parts catalog” on page 650 to help identify parts.

Paper guidelines

Paper characteristics

The following paper characteristics affect print quality and reliability. Consider these factors before printing on them:

General information

29

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Weight

The printer trays and multipurpose feeder can automatically feed paper weights between 60–176 g/m2 (16–47‑lb) grain
long

paper. The 2100‑

Paper lighter than 60 g/m2 (16 lb) might not be stiff enough to feed properly, and may cause jams.

Note: Two‑sided printing is supported for 60–176 g/m2 (16–47‑lb) paper.

sheet tray can automatically feed paper weights up to 60–135 g/m2 (16–36‑lb) grain long paper.

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
cold, or dry conditions, even in the trays, can contribute to paper curling prior to printing and can cause feeding
problems.

passes through the printer, where it is exposed to high temperatures. Storing paper unwrapped in hot, humid,

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 300 Sheffield points;
smoothness between 150 and 250 Sheffield points produces the best print quality.

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
paper may also require a longer conditioning period.

several days if the storage or transportation environment is very different from the printer environment. Thick

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 60–176 g/m

(16–47‑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.

General information

30

7463

• 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 60–90‑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

(16–24‑lb) paper.

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
and discipline. Many factors are taken into consideration both separately and as a whole, including the following:

recycled cut size copier papers available on the global market. This scientific testing is conducted with rigor

• 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
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.

matter. And while recycled papers are one good path to printing in an environmentally responsible manner,

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

General information

31

Lexmark Confidential until announced

7463

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.

Be selective about the origin of wood fiber. Buy from suppliers who carry certifications such as the Forestry

2

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,

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

• Multiple part forms or documents

2

(16 lb)

For more information about Lexmark, visit www.lexmark.com. General sustainability-related information can be found
at the Environmental Sustainability link.

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

32

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Data security notice

This printer contains various types of memory that are capable of storing device and network settings, information
from embedded solutions, and user data:

• Volatile memory—This device utilizes standard Random Access Memory (RAM) to temporarily buffer user data

during simple print and copy jobs.

• Non-volatile memory—This device may utilize two forms of non-volatile memory: EEPROM and NAND (flash

memory). Both types are used to store the operating system, device settings, network information, scanner and
bookmark settings, and embedded solutions.

• Hard disk memory—Some devices have a hard disk drive installed. The printer hard disk is designed for device-

specific
not provide the capability for users to extract information, create folders, create disk or network file shares, or FTP
information directly from a client device. The hard disk can retain buffered user data from complex scan, print,
copy, and fax jobs, as well as form data, and font data.

To erase volatile memory, turn off the printer.

functionality

and cannot be used for long term storage for data that is not print-related. The hard disk does

To erase non-volatile memory, see

To erase the printer hard disk, see “Wipe All Settings” on page 257.

The printer control panel and RIP/controller board contain NVRAM. The old part must be returned to your next level
support.

“Erase All Information on Disk” on page 256.

Tools required for service

Flat-blade screwdrivers, various sizes
#1 Phillips screwdriver, magnetic
#2 Phillips screwdriver, magnetic
#2 Phillips screwdriver, magnetic short-blade
7/32 inch (5.5 mm) open-end wrench

7.0 mm nut driver
Needlenose pliers
Diagonal side cutters
Spring hook
Feeler gauges
Analog or digital multimeter
Parallel wrap plug 1319128
Twinax/serial debug cable 1381963
Coax/serial debug cable 1381964
Flash light (optional)
3mm hex wrench

General information

33

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34

Diagnostic information

• “Troubleshooting overview” on page 35

•

“Power‑on Reset (POR) sequence” on page 36

• “Using Safe Mode” on page 37

• “Fixing print quality issues” on page 37

•

“Paper jams” on page 51

• “User attendance messages (0-99.99)” on page 97

•

“Printer hardware errors (100-199.99)” on page 104

• “ADF and scanner errors” on page 117

• “Firmware and/or system electronics errors (900-999.99)” on page 138

•

“Input/output option hardware errors” on page 147

• “Input/output option paper jam errors” on page 162

• “Symptoms” on page 199

CAUTION—SHOCK HAZARD: Remove the power cord from the electrical outlet before you connect or

disconnect any cable or electronic card or assembly for personal safety and to prevent damage to the printer.

Disconnect any connections between the printer and PCs/peripherals.

7463

CAUTION—POTENTIAL INJURY: The printer weight is greater than 18 kg (40 lb) and requires two or more

trained personnel to lift it safely.

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.

Troubleshooting overview

•

“Performing the initial troubleshooting check” on page 35

• “Error code number key” on page 36

Performing the initial troubleshooting check

Before you start the troubleshooting procedures, perform the following checks:

• With the power cord unplugged from the wall outlet, check that the cord is free from breakage, short-circuits,

disconnected wires, or incorrect connections.

• Make sure the printer is properly grounded. Check the power cord ground terminal.

•

Make sure the power supply line voltage is within 10% of the rated line voltage.

• Make sure the machine is securely installed on a level surface in a well-ventilated area.

• Make sure the room temperature is between 16 and 32°C (60 and 90°F) and that the relative humidity is between

20 and 80%.

• Avoid sites generating ammonia gas, high temperature, high humidity (near water faucets, kettles, humidifiers),

cold spaces, near open flames, and dusty areas.

• Avoid sites exposed to direct sunlight.

Diagnostic information

35

• Make sure the paper is the recommended paper for this printer.

• Make a trial print with paper from a newly opened package, and check the result.

Error code number key

The following chart identifies the error code numbers that should be consistent across product lines.

Range Description Go to page

0–99 User attendance messages See “User attendance messages

(0-99.99)” on page 97.

100–199 Printer hardware errors See “Printer hardware errors

(100-199.99)” on page 104.

200–299 Printer and input option paper jams See “Paper jams” on page 51.

300-399 Input/output option hardware errors See “Input/output option hardware

errors” on page 147.

7463

400–499

400–403

431–432

450–458

461

900–999 Firmware and/or system electronics errors See “Firmware and/or system

Output option paper jams

HTU paper jam

Mailbox (x = bin number) paper jam

Finisher/Stacker paper jam

Hole Punch paper jam

See “Input/output option paper jam

errors” on page 162.

electronics errors (900-999.99)” on
page 138.

Power‑on Reset (POR) sequence

When you turn the printer on, it performs a Power-on Reset (POR) sequence.

Check for correct POR functioning of the base printer by observing the following:

1 The LED turns on.

2 The main fan turns on.

3 The operator panel turns on.

4 The fuser heater turns on. The fuser takes longer to warm up from a cold start than a warm start.

5 The operator panel LED starts blinking.

6 A splash screen appears on the display. The following errors or messages may appear:

• Close Door or Insert Cartridge appear if the front access door is open or the print cartridge is missing

• Cartridge errors, such as Defective Cartridge or Missing Cartridge

7 Ready appears on the display.

8 The main drive motor turns on.

9 The EP drive assembly drives the developer shaft located in the print cartridge.

Diagnostic information

36

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10 The exit rollers turn.

11 The printer may begin calibration.

Using Safe Mode

Safe Mode lets the printer continue to operate in a special limited mode in which it attempts to continue offering as
much functionality as possible despite known issues. See “Safe Mode print behavior” on page 37.

Note: Safe Mode is intended as a short‑term workaround and should be used only in the case of a non‑critical error
when a print job must be completed before service can be arranged to repair the printer. The printer must be
returned to standard operating mode before diagnostics can be run or full‑function printing can continue.

You can enter Safe Mode in one of the following ways:

• Enter Safe Mode from the Configuration menu, and then POR the printer. See “Safe Mode” on page 251.

• Press the 6 and 7

keys, and then POR the printer.

Return the printer to standard operating mode to service the printer and return to full‑

function printing.

Safe Mode print behavior

The following table outlines the behavior for this printer model while in Safe Mode:

Safe Mode engine features Engine behavior Control panel behavior

Simplex printing only Reports that duplex printing is disabled. Duplex print option is not selectable.

Ignore duplex sensor

Ignore standard bin full sensor Standard bin full messages are not

reported.

Print at narrow media operating point Pages are printed slower. N/A

Ignore all input options Reports that only Tray 1 is installed. Only Tray 1 and the MPF are selectable.

Ignore all output options Does not any report installed finishing

options.

Ignore rear door sensor Rear door open messages are not

reported.

Ignore rear lower door sensor (MX81x
only)

Reduce print speed Pages are printed slower. N/A

Rear lower door open messages are not
reported.

Standard bin full messages will not
occur.

No finishing options are selectable.

Rear door open messages do not occur.

Rear lower door open messages do not
occur.

Reduce time to first print Slower time to first print. N/A

Fixing print quality issues

• “Initial print quality check” on page 38

• “Fixing base printer print quality issues” on page 38

Diagnostic information

37

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The symptoms described in this chapter might require replacement of one or more CRUs (Customer Replaceable Units)
designated as supplies or maintenance items, which are the responsibility of the customer. With the customer's
permission, you might need to install a developer (toner) cartridge.

Initial print quality check

Before troubleshooting specific print problems, complete the following initial print quality check:

1 Print a menu settings page, and then check the life status of all supplies. Any supplies that are low should be replaced.

Be sure to keep the original menu page to restore the customer's custom settings if needed.

2 On the menu page, make sure the following settings are at the default level:

• Print Resolution: Set to 600 dpi (print quality problems should be checked at different resolution settings).

• Toner Darkness: Set to 8 (default).

• Check the paper type, texture and weight settings against the paper that is loaded in the printer.

3 Inspect the transfer roller for damage. Replace, if damaged.

4 Inspect the print cartridge and imaging unit for damage. Replace, if damaged.

5

If paper other than 20 lb plain letter/A4 paper is being used, load 20 lb plain letter/A4 and print the Print Quality
pages to see if the problem remains. Use Tray 1 to test print quality problems.

6 Print the Print Quality Pages, and then look for variations in the print from what is expected.

7 Check to ensure the correct printer driver for the installed software is being used. An incorrect printer driver for

the installed software can cause problems. Incorrect characters could print, and the copy may not fit the page
correctly.

8 Measure all voltages from the connector to the printer ground.

Fixing base printer print quality issues

Gray background on prints

Diagnostic information

38

Actions Yes No

7463

Step 1

Ensure the toner cartridge has sufficient toner.

Does the cartridge have sufficient toner?

Step 2

Remove any contamination from the CTLS contacts, located on the toner
level/imaging unit high voltage contact. Perform a print test.

Does the problem remain?

Step 3

Check the CTLS, located on the toner level/imaging unit high voltage
contact, for damage.

Is it free of damage?

Step 4

Check the transfer roller for surface contamination or excessive wear.

Is it free of contamination and wear?

Step 5

Check the transfer roller left contact spring, located on the transfer roller
left arm, for damage.

Is it free of damage?

Go to step 2. Replace the toner

cartridge.

Go to step 3. Problem is solved.

Go to step 4. Replace the toner

level/imaging unit high
voltage contact.

Go to step 5. Replace the transfer

roller.

Contact the next
highest level of
support.

Replace the transfer
roller left arm. See

“Transfer roller left
arm with cable
removal” on page

.

332

Horizontal voids appear on prints

Diagnostic information

39

Action Yes No

7463

Step 1

Check the media condition, and load new dry, and recommended media.
Re‑print the defective image.

Does the problem remain?

Step 2

Check the media transfer route and media path for contamination and
debris.

Are the above paths free of contamination and debris?

Step 3

Check the toner level.

Is the toner level normal?

Step 4

Check the transfer roller for contamination and wear.

Is the above component free of excess wear and contamination?

Step 5

Check the laser printhead for proper connection.

Is the above component properly connected?

Go to step 2. The problem is solved.

Go to step 3. Remove debris or

contamination.

Go to step 4. Replace the print

cartridge.

Go to step 5. Replace the transfer

roller. See “Transfer

roller removal” on
page 336.

Replace the laser
printhead. See “Laser

printhead
page 314.

removal”

Replace the
connections.

on

Step 6

Perform a print test.

Does the problem remain?

Contact the next
highest level of
support.

Print irregularities

Action Yes No

Step 1

a Move the width and length guides in the tray to the correct positions

for the size of the paper loaded in the tray.

b Resend the print job.

Do print irregularities still appear?

Go to step 2. The problem is solved.

The problem is solved.

Diagnostic information

40

Action Yes No

7463

Step 2

Check the media condition and load new dry, recommended media.
Re‑print the defective image.

Does the problem remain?

Step 3

Check the toner level.

Is the toner level normal?

Step 4

Check the laser beam route. Check for debris between the printhead
assembly and the PC drum.

Is the laser beam route free of debris, and the glass window in the
printhead assembly free of contamination?

Step 5

Check the transfer roller for contamination and wear.

Is the above component free of excess wear and contamination?

Step 6

Check the laser printhead installation.

Is the above component properly installed?

Go to step 3. The problem is solved.

Go to step 4. Replace the print

cartridge.

Go to step 5. Remove debris or clean

the printhead
assembly window.

Go to step 6. Replace the transfer

roller. See “Transfer

roller removal” on
page 336.

Go to step 7. Replace the laser

printhead

“Laser printhead
removal” on page

314.

removal.

See

Step 7

Perform a print test.

Does the problem remain?

Printer is printing blank pages

Contact the next level
of support.

The problem is solved.

Diagnostic information

41

Actions Yes No

7463

Step 1

Check the toner cartridge level.

Is the toner level low?

Step 2

Check the imaging unit for wear or damage.

Is it free of wear or damage?

Step 3

Check the transfer roller for surface contamination or excessive wear.

Is it free of contamination and wear?

Step 4

Check the transfer roller left contact spring, located on the transfer roller
left arm, for damage.

Is it free of damage?

Step 5

Reseat the cables on the HVPS.

Replace the toner
cartridge.

Go to step 3. Replace the imaging

Go to step 4. Replace the transfer

Go to step 5. Replace the transfer

Replace the HVPS. See

“HVPS removal” on
page 388.

Go to step 2.

unit.

roller.

roller left arm with
cable. See “Transfer

roller left arm with
cable removal” on
page 332.

The problem is solved.

Does the problem remain?

Step 6

Reseat the cables J101 (video) and "MIR MTR" on the controller board.

Does the problem remain?

Printer is printing solid black pages

Replace the laser
printhead. See “Laser

printhead
page 314.

removal”

Contact the next level
of support.

on

Diagnostic information

42

Actions Yes No

7463

Step 1

Check the imaging unit for damage.

Is it free of damage?

Step 2

Remove any contamination from the imaging unit contacts.

Does the problem remain?

Step 3

Check the cables on the HVPS.

Are the above cables properly connected?

Shadow images appear on prints

Go to step 2. Replace the imaging

unit.

Go to step 3. Problem is solved.

Replace the HVPS. See

“HVPS removal” on
page 388.

Reconnect the cables.

Actions Yes No

Step 1

Does the shadow image appear every two pages?

Step 2

Check the upper redrive for wear or damage.

Is it free of wear or damage?

Step 3

Check the transfer roller for surface contamination or excessive wear.

Is it free of contamination and wear?

Step 4

Check the following fuser components for wear or damage:

• Gears

Go to step 2. Go to step 3.

Go to step 3. Replace the upper

redrive. See “Upper

redrive removal” on
page 354.

Go to step 4. Replace the transfer

roller. See “Transfer

roller removal” on
page 336.

Go to step 5. Replace the fuser. See

“Fuser removal” on
page 340.

• Exit rollers

• Heat belt or hot roller

Are they free of damage?

Diagnostic information

43

Actions Yes No

7463

Step 5

Reseat the connections on the LVPS.

Does the problem remain?

Replace the LVPS. See

“LVPS removal” on
page 389.

Skewed print

Actions Yes No

Step 1

a Perform a print test:

Diagnostics menu > PRINT TESTS > Tray 1

b Adjust the margins if necessary:

Diagnostics menu > REGISTRATION

Go to step 2. The problem is solved.

Problem solved.

Does the error remain?

Step 2

a Check the media source.
b If the media is from tray 1, go to step 3.

If the media is from the MPF, go to step 5.

Step 3

Make sure the pick roller tires are free of debris. Check for wear or
damage.

Are they free of wear or damage?

Step 4

Check the lift plate on the media tray for damage.

Is it free of damage?

Step 5

Make sure the MPF pick roller and separator pad are free of debris. Check
for wear or damage.

Are they free of wear or damage?

Go to step 4. Replace the pick roller.

See “Pick roller

assembly removal” on
page 363.

Go to step 11. Replace the media tray.

Go to step 6. Replace the MPF pick

roller/separator pad.
See “MPF pick roller

removal” on page

326.

Diagnostic information

44

Actions Yes No

7463

Step 6

Perform the media skew adjustment. See “Media aligner roller

adjustment” on page 279.

Does the problem remain?

Step 7

Make sure the input roller/deskew assembly is free of debris. Check for
wear or damage.

Are they free of wear or damage?

Streaked horizontal lines appear on prints

Contact the next level
of support.

Problem solved. Replace the printer.

Problem solved.

Actions Yes No

Step 1

Select another tray or feeder and then resend the print job.

Specify the paper tray before sending the print job.

Go to step 2. The problem is solved.

• For Windows users, specify the type and weight from Print

Properties.

• For Macintosh users, specify the type and weight from the Print

dialog.

Does the problem remain?

Step 2

From the Paper menu on the printer control panel, check the paper type
and paper weight settings.

Do the paper type and paper weight settings match the paper in the tray?

Step 3

Load paper from a fresh package.

Paper absorbs moisture due to high humidity. Store paper in its
original wrapper until you use it.

Go to step 3. Change the paper type

and weight settings to
match the paper in the
tray.

Go to step 4. The problem is solved.

Does the problem remain?

Diagnostic information

45

Actions Yes No

7463

Step 4

Make sure the imaging unit or toner cartridge is not damaged.

a Remove the print or toner cartridge.

Warning—Potential Damage: Be careful not to touch the

photoconductor drum or imaging unit. Doing so may affect the print
quality of future print jobs.

b Reinstall the print or toner cartridge.

Note: For some printer models, you may need to check all printer or

toner cartridges.

Does the problem remain?

Step 5

Replace the imaging unit.or toner cartridge.

Does the problem remain?

Step 6

a Check the media condition.
b Load new, dry, recommended media.

c Reprint the defective image.

Go to step 5. The problem is solved.

Go to step 6. The problem is solved.

Go to step 7. The problem is solved.

Does the problem remain?

Step 7

a Check the media transfer route.
b Check the media route for contamination or obstacles.

Are there obstacles in the route?

Step 8

Check the imaging unit for proper installation.

Is the above component properly installed?

Step 9

Check the transfer roller assembly for contamination and wear.

Is the above component free of excess wear and contamination?

Step 10

a Check the heat belt and hot roller in the fuser.
b Remove the fuser unit assembly.

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.

Go to step 8. Remove obstacles or

contamination.

Go to step 9. Inspect, clean, and

reinstall or replace the
imaging unit.

Go to step 10. Replace the transfer

roller. See “Transfer

roller removal” on
page 336.

Replace the fuser. See

“Fuser removal” on
page 340.

Go to step 11.

Is there contamination or cracks on the heat roll and/or pressure roll?

Diagnostic information

46

Actions Yes No

7463

Step 11

Perform a print test.

Does the problem remain?

Contact your next level
of support.

Streaked vertical lines appear on prints

Actions Yes No

Step 1

Check the transfer roll for contamination or excessive wear.

Is it free of contamination or wear?

Step 2

Remove the fuser, and check for damage or debris on the rollers and belts.

Go to step 2. Replace the transfer

The problem is solved.

roll.

Replace the fuser.

Is it free of damage and debris?

Toner specks appear on prints

Actions Yes No

Step 1

Check the imaging unit for wear or damage.

Is it free of wear or damage?

Step 2

Make sure the paper path is free of debris or toner contamination.

Go to step 2. Replace the imaging

Go to step 3. The problem is solved.

unit.

Does the problem remain?

Diagnostic information

47

Actions Yes No

7463

Step 3

Check the transfer roll for contamination or excessive wear.

Is it free of contamination or wear?

Step 4

Remove the fuser and check for damage or debris on the rollers and belts.

Is it free of damage and debris?

Step 5

Reseat the cables JVIDEO1 and JGLV on the controller board.

Does the problem remain?

Vertical voids appear on prints

Go to step 4. Replace the transfer

roll.

Go to step 5. Replace the fuser.

Replace the LSU. The problem is solved.

Action Yes No

Step 1

Check the media condition and load new dry, recommended media.
Re‑print the defective image.

Does the problem remain?

Step 2

Check the media transfer route and media path for contamination and
debris.

Are the above paths free of contamination and debris?

Step 3

Check the laser beam route. Check for debris between the printhead
assembly and the PC drum.

Is the laser beam route free of debris, and the glass window in the
printhead assembly free of contamination?

Step 4

Check the print cartridge for proper installation.

Go to step 2. The problem is solved.

Go to step 3. Remove debris or

contamination.

Go to step 4. Remove debris or clean

the printhead
assembly window.

Go to step 5. Inspect, clean, and

replace the print
cartridge.

Is the above component properly installed?

Diagnostic information

48

Action Yes No

7463

Step 5

Check the transfer roller for contamination and wear.

Is the above component free of excess wear and contamination?

Step 6

Check the laser printhead installation.

Is the above component properly installed?

Step 7

Perform a print test.

Does the problem remain?

Toner fog or background shading appears on prints

Go to step 6. Replace the transfer

roller. See

roller removal” on
page 336.

Go to step 7. Replace the laser

printhead

“Laser printhead
removal” on page

314.

Contact the next
highest level of
support.

The problem is solved.

“Transfer

removal.

See

Actions Yes No

Step 1

Make sure the imaging unit or toner cartridge is not damaged.
Note: In some printer models, you may need to check all print or toner

cartridges.

The problem is solved. Go to step 2.

a Remove the imaging unit or toner cartridge.

Warning—Potential Damage: Be careful not to touch the

photoconductor drum or imaging kit. Doing so may affect the print
quality of future print jobs.

b Reinstall the imaging unit or toner cartridge.

Does this solve the problem?

Step 2

Resend the print job:

Before sending the job to print, check to make sure that an off-white
background is not selected.

The problem is solved. Go to step 3.

• For Windows users, check the Print properties.

• For Macintosh users, check the Print dialog.

Does this solve the problem?

Diagnostic information

49

Actions Yes No

7463

Step 3

Replace the imaging unit or toner cartridge.

Does this solve the problem?

Step 4

Replace the fuser.

Does this solve the problem?

Step 5

Replace the LVPS. See “LVPS removal” on page 389.

Does this solve the problem?

Step 6

Replace the printhead. See “Laser printhead removal” on page 314.

Does this solve the problem?

Toner rubs off

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. Contact your next level

of support.

Actions Yes No

Step 1

Check if the fuser screws are tightly fastened.

Are they tightly fastened?

Step 2

Check the following fuser components for wear or damage:

• Gears

Go to step 2. Reseat the fuser, and

tighten the screws.

Go to step 3. Replace the fuser. See

“Fuser removal” on
page 340.

• Exit rollers

• Heat belt or hot roller

Are they free of damage?

Step 3

Check the cables on the LVPS.

Are the connections on the above component properly connected?

Contact the next level
of support.

Replace the LVPS. See

“LVPS removal” on
page 389.

Diagnostic information

50

Paper jams

• “Understanding jam numbers and locations” on page 52

•

“200–201 paper jams” on page 53

• “Sensor (input) static jam service check” on page 58

• “Sensor (input) early arriving jam service check” on page 58

•

“Sensor (input) never‑ or late‑arriving jam service check” on page 59

• “Sensor (input) late-leaving or did-not-clear jam service check” on page 61

•

“Main drive motor control jam service check” on page 62

• “Printhead motor control jam service check” on page 63

• “Fuser drive motor control jam service check” on page 63

•

“Sensor (input) miscellaneous jam 1 service check” on page 63

• “Sensor (input) miscellaneous jam 2 service check” on page 64

• “Sensor (input) miscellaneous jam 3 service check” on page 64

•

“202 paper jams” on page 65

• “Sensor (fuser exit) static jam service check” on page 67

• “Sensor (fuser exit) late-leaving jam service check” on page 67

•

“Sensor (fuser exit) late-arriving jam service check” on page 68

• “Sensor (narrow media) late arriving jam service check” on page 69

•

“Sensor (narrow media) static jam service check” on page 70

• “Sensor (fuser exit) miscellaneous jam service check” on page 71

• “Fuser ID chip control jam service check” on page 71

•

“203 paper jams” on page 72

• “Upper redrive motor control jam service check” on page 73

• “230 paper jams” on page 73

•

“Sensor (duplex path) static jam service check” on page 76

• “Sensor (duplex path) early arriving jam service check” on page 77

• “Sensor (duplex path) never‑ or late‑arriving jam service check” on page 78

•

“Sensor (duplex path) late leaving jam service check” on page 79

• “Duplex control jam service check” on page 80

•

“Sensor (duplex path) miscellaneous jam service check” on page 80

• “Sensor (input) never-arriving jam (exiting duplex) service check” on page 81

• “235–239 paper jams” on page 81

•

“24x paper jams” on page 82

• “Media feeder motor control service check” on page 84

• “Media tray 1, tray pulled jam” on page 85

•

“Media feeder motor tray lift error service check” on page 86

• “Sensor (input) never-arriving jam from tray 1 service check” on page 86

• “250 paper jams” on page 87

•

“Sensor (input) never-arriving jam from MPF media tray service check” on page 89

7463

Diagnostic information

51

7463

• “41y.xx paper jams” on page 91

•

“43y.xx paper jams” on page 92

• “451 paper jams” on page 93

• “455–457 paper jams” on page 94

Understanding jam numbers and locations

When a jam occurs, a message indicating the jam location appears on the display. Open doors and covers, and remove
trays

access jam locations. To resolve any paper jam message, you must clear all jammed paper from the paper path.

to

Area # Jam location Printer message Go to this section

1 Staple finisher 455–457 See “455–457 paper jams” on page 94.

2 Standard bin 203 See “203 paper jams” on page 72.

3 Inside the printer 200–201 See “200–201 paper jams” on page 53.

4 Multipurpose feeder 250 See “250 paper jams” on page 87.

5 Duplex area 235–239 See “235–239 paper jams” on page 81.

6 Trays 24x See “24x paper jams” on page 82.

7 Output expander 43y.xx See “43y.xx paper jams” on page 92.

Diagnostic information

52

Area # Jam location Printer message Go to this section

8 Upper rear door 202 See “202 paper jams” on page 65.

7463

9 Upper door and rear duplex area 231–234 See

10 Mailbox 41y.xx See

11 Staple finisher rear door 451 See “451 paper jams” on page 93.

“230 paper jams” on page 73

“41y.xx paper jams” on page 91.

200–201 paper jams

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.

1 Lift the front cover, and then pull down the multipurpose feeder door.

2 Lift the green handle, and then pull the toner cartridge out of the printer.

3 Place the cartridge aside.

Diagnostic information

53

4 Lift the green handle, and then pull the imaging unit out of the printer.

5 Place the imaging unit aside on a flat, smooth surface.

Warning—Potential Damage: Do not expose the imaging unit to direct light for more than 10 minutes.

Extended exposure to light may cause print quality problems.

Warning—Potential Damage: Do not touch the photoconductor drum. Doing so may affect the print quality of
future print jobs.

7463

6 Pull the jammed paper gently to the right, and then remove it from the printer.

Note: Make sure all paper fragments are removed.

Warning—Potential Damage: The jammed paper may be covered with toner, which can stain garments and

skin.

Diagnostic information

54

7 Install the imaging unit.

Note: Use the arrows on the side of the printer as a guide.

8 Insert the cartridge into the printer, and then push the green handle back into place.

7463

Notes:

• Align the arrows on the guides of the toner cartridge with the arrows in the printer.

• Make sure the cartridge is fully pushed in.

Diagnostic information

55

9 Close the multipurpose feeder door and the front cover.

10 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

7463

200‑201 paper jams

Error code Description Action

200.01 Media remains on the sensor (input) during
the warm‑up sequence.

200.02 Media reached the sensor (input) sooner
than the
causes the engine to assume a 550 paper
path on a 250 model.

200.03 Media is late reaching the sensor (input)
within the specified time.

200.05 Media reached the sensor (input) but did not
clear it within the specified time. (Media
source = MPF tray)

200.07 Media reached the sensor (input) but did not
clear it within the specified time.

200.08 Media is late reaching the sensor (input)
within the specified time.

200.09 The proper main motor feedback to start
laser servo was not received.

specified time. The wrong config ID

See “Sensor (input) static jam service check” on page 58

See

page 58.

See “Sensor (input) never‑ or late‑arriving jam service check”

on page 59.

See “Sensor (input) late-leaving or did-not-clear jam service

check” on page 61.

See “Sensor (input) late-leaving or did-not-clear jam service

check” on page 61.

See “Sensor (input) never‑ or late‑arriving jam service check”

on page 59.

See “Main drive motor control jam service check” on page

62.

.

“Sensor (input) early arriving jam service check” on

200.10 Printhead motor was not locked when page
reached the sensor (input).

200.11 Printhead motor fell out of lock after the
page reached the sensor (input).

200.12 Printhead was not ready for the page when
the sensor (input) was reached.

Diagnostic information

See “Printhead motor control jam service check” on page

63.

See “Printhead motor control jam service check” on page

63.

See “Printhead motor control jam service check” on page

63.

56

Error code Description Action

7463

200.13 The page at the sensor (input) is not the next
page to be imaged.

200.14 Proper main motor feedback to start laser
servo was not received.

200.15 Media reached the sensor (input) but did not
clear it within the specified time. (Media
source = Tray 1)

200.16 Main drive motor stalled. See “Main drive motor control jam service check” on page

200.17 Fuser motor stalled. See “Fuser drive motor control jam service check” on page

200.19 Paper never reached the sensor (input), but
it was successfully picked from the source.

200.25 Media reached the sensor (input) but did not
clear it within the specified time. (Media
source = Tray 2)

200.32 Detected sensor (control panel interlock)
bounce.

200.33 Printhead was not ready for page when
sensor (input) was reached.

See “Sensor (input) miscellaneous jam 1 service check” on

page 63.

See

“Main drive motor control jam service check” on page

62.

See “Sensor (input) late-leaving or did-not-clear jam service

check” on page 61.

62.

63.

See “Sensor (input) miscellaneous jam 1 service check” on

page 63.

See “Sensor (input) late-leaving or did-not-clear jam service

check” on page 61.

See “Sensor (input) miscellaneous jam 2 service check” on

page 64.

See “Printhead motor control jam service check” on page

63.

200.34 Short media detected. See “Sensor (input) miscellaneous jam 3 service check” on

page 64.

200.35 Media reached the sensor (input) but did not
clear it within the specified time. (Media
source = Tray 3)

200.45 Media reached the sensor (input), but did not
clear it within the specified time. (Media
source = Tray 4)

See “Sensor (input) late-leaving or did-not-clear jam service

check” on page 61.

See “Sensor (input) late-leaving or did-not-clear jam service

check” on page 61.

Diagnostic information

57

Sensor (input) static jam service check

Action Yes No

7463

Step 1

Check the media path for partially fed or jammed media.

Is the media path free from partially fed or jammed media?

Step 2

Check the sensor (input) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item input.

Does the display on the operator panel change every time the sensing
area of the above sensor is interrupted or blocked?

Step 3

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 4

Perform a print test.

Go to step 2. Remove any pre-

staged or jammed
media.

Go to

step 4. Go to step 3.

Replace the Sensor
(input). See “Sensor

(input) removal” on
page 329.

Go to step 4.

Contact the next
highest level of tech
support.

Reseat the connection.

Go to step 4.

Problem resolved.

Does the problem remain?

Sensor (input) early arriving jam service check

Action Yes No

Step 1

Check media origination.

Did the media originate from the MPF?

Step 2

Check the MPF pick roller.

Is the MPF pick roller free of excess wear and contamination?

Step 3

Perform a MPF print test and check the MPF pick solenoid for proper
operation.

Does the above component operate properly?

Go to step 2. Go to step 5.

Go to step 3. Clean or replace the

Go to step 4. Replace the MPF pick

MPF pick roller. See

“MPF pick roller
removal” on page

326.

solenoid.

Diagnostic information

58

Action Yes No

7463

Step 4

Check the MPF feeder lift plate assembly for damage.

Is the above component free from damage?

Step 5

Check all the media trays for proper media installation.

Is the media properly installed in all the media trays?

Step 6

Check all of the media trays and the media path for partially fed media.

Are the media trays and the media path free from any partially fed pieces
of media?

Step 7

Check the sensor (input) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item input.

Does the display on the operator panel change every time the sensing
area of the above sensor is interrupted or blocked?

Go to step 5. Replace the MPF

feeder lift plate. See

“MPF feeder lift plate
removal” on page

322.

Go to step 6. Remove and properly

reinstall the media.

Go to step 7. Remove any pre-

staged or jammed
media.

Go to

step 9. Go to step 8.

Step 8

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 9

Perform a print test.

Does the problem remain?

Replace the Sensor
(input). See “Sensor

(input) removal” on
page 329.

Go to step 9.

Contact the next
highest level of
technical support.

Sensor (input) never‑ or late‑arriving jam service check

Action Yes No

Step 1

Check the media size setup and tray guides for all media trays.

Does the media size, in use, match the size set for all media trays?

Step 2

Check the media trays for overfilling.

Go to step 2. Replace the media, or

Remove any excess
new media.

Replace the
connection.

Go to step 9.

Problem solved.

change the media size
setup.

Go to step 3.

Are any of the media trays overfilled?

Diagnostic information

59

Action Yes No

7463

Step 3

Check the media condition in all media trays.

Is any of the media in any of the media trays crumpled or damaged?

Step 4

Check media origination.

Did the media originate from the MPF?

Step 5

Check the MPF pick roll assembly.

Is the above component free of excess wear and contamination?

Step 6

Perform a MPF print test, and check the MPF pick solenoid for proper
operation.

Does the above component operate properly?

Step 7

Check the pick roller in the media tray being picked from.

Is the pick roller free of excess wear and contamination?

Replace the damaged
media.

Go to step 5. Go to step 7.

Go to step 6. Clean or replace the

Go to step 8. Replace the MPF pick

Go to step 8. Clean or replace the

Go to step 4.

MPF pick roller. See

“MPF pick roller
removal” on page

.

326

solenoid.

pick roller. See “Pick

roller assembly
removal” on page

.

363

Step 8

Check the aligner assembly for obstructions.

Is the above component free from obstructions?

Step 9

Check the sensor (input) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item input.

Does the display on the operator panel change every time the sensing
area of the above sensor is interrupted or blocked?

Step 10

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 11

Perform a print test, and check the appropriate media feeder.

Is the media properly picked and advanced out of the appropriate media
tray?

Go to step 9. Remove obstructions.

Go to

step 11. Go to step 10.

Replace the Sensor
(input). See “Sensor

(input) removal” on
page 329.

Go to step 12. Replace the

Replace the
connection.

appropriate media
feeder. See “Media

feeder removal” on
page 379.

Diagnostic information

60

Action Yes No

7463

Step 12

Perform a print test, and check the main motor assembly.

Is the media properly transported and able to reach the sensor (input)?

Step 13

Perform a print test.

Does the problem remain?

Go to step 13. Replace the main drive

Contact the next
highest level of
technical support.

Sensor (input) late-leaving or did-not-clear jam service check

Action Yes No

Step 1

Check the media size setup and tray guides for all media trays.

Does the media size, in use, match the size set for all media trays?

Step 2

Check the media trays for overfilling.

Are any of the media trays overfilled?

Go to step 2. Replace the media, or

Remove any excess
new media.

See “Main drive

motor.

motor removal” on
page 377.

Problem solved.

change the media size
setup.

Go to step 3.

Step 3

Check the media condition in all media trays.

Is any of the media in any of the media trays crumpled or damaged?

Step 4

Check media origination.

Did the media originate from the MPF?

Step 5

Check the MPF pick roll assembly.

Is the above component free of excess wear and contamination?

Step 6

Perform a MPF print test, and check the MPF pick solenoid for proper
operation.

Does the above component operate properly?

Step 7

Check the pick roller in the media tray being picked from.

Is the pick roller free of excess wear and contamination?

Replace the damaged
media.

Go to step 5. Go to step 7.

Go to step 6. Clean or replace the

Go to step 9. Replace the MPF pick

Go to step 8. Clean or replace the

Go to step 4.

MPF pick roller. See

“MPF pick roller
removal” on page

.

326

solenoid.

pick roller. See “Pick

roller assembly
removal” on page

.

363

Diagnostic information

61

Action Yes No

7463

Step 8

Check the aligner assembly for obstructions.

Is the above component free from obstructions?

Step 9

Check the sensor (input) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item input.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Step 10

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 11

Perform a print test, and check the appropriate media feeder.

Is the media properly picked and advanced out of the appropriate media
tray?

Go to step 9. Remove obstructions.

Go to

step 11. Go to step 10.

Replace the Sensor
(input). See “Sensor

(input) removal” on
page 329.

Go to step 12. Replace the

Replace the
connection.

appropriate media
feeder. See “Media

feeder removal” on
page 379.

Step 12

Perform a print test, and check the main motor assembly.

Is the media properly transported and able to reach the sensor (input)?

Step 13

Perform a print test.

Does the problem remain?

Go to step 13. Replace the main drive

Contact the next level
of technical support.

Main drive motor control jam service check

Action Yes No

Step 1

Check the main drive motor and the socket “TRANSPORT MTR” on the
controller board for proper connection.

Is the main drive motor properly connected?

Step 2

Reset the machine.

Does the error continue?

Replace the main drive
motor. See “Main drive

motor removal” on
page 377.

Replace the controller
board. See “Controller

board removal” on
page 372.

motor. See “Main drive

motor removal” on
page 377.

Problem solved.

Reseat the connection.

Go to step 2.

Problem solved.

Diagnostic information

62

Printhead motor control jam service check

Action Yes No

7463

Step 1

Ensure the cables for sockets “MIR MTR” and “VIDEO” on the controller
card are properly connected and not damaged.

Are the cables connected and undamaged?

Step 2

Reset the machine.

Does the error continue?

Step 3

Reset the machine.

Does the error continue?

Go to step 2. Reseat the

Replace the printhead.
See “Laser printhead

removal” on page

.

314

Replace the controller
board. See “Controller

board removal” on
page 372.

Fuser drive motor control jam service check

Action Yes No

Step 1

Check the fuser drive motor and the socket “J24” on the controller board
for proper connection.

Is the main drive motor properly connected?

Replace the fuser drive
motor. See “Fuser

drive motor removal”
on page 374.

Go to step 2.

connections.

Go to step 2.

Problem solved.

Problem solved.

Reseat the connection.

Step 2

Reset the machine.

Does the error continue?

Replace the controller
board. See “Controller

board removal” on
page 372.

Sensor (input) miscellaneous jam 1 service check

Action Yes No

Step 1

Check the appropriate media tray sensor (pass through) in the appropriate
input option for proper operation.

a Enter the diagnostic mode.
b Select Input tray tests.

c Select Sensor test.

d Select the appropriate input tray.

Observe the line item “pass through” for the appropriate media tray.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Go to

step 3. Go to step 2.

Problem solved.

Diagnostic information

63

Action Yes No

7463

Step 2

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 3

Perform a print test using the appropriate input tray.

Does the error continue?

Replace the sensor
(pass through). See

“Sensor (drawer pass
through) removal ” on
page 510.

Replace the input
option.

Sensor (input) miscellaneous jam 2 service check

Action Yes No

Step 1

Check the sensor (input) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item control panel door interlock.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Go to

step 3. Go to step 2.

Reseat the connection.

Problem solved.

Step 2

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 3

Reset the machine.

Does the error continue?

Replace the sensor
(control panel door
interlock).

Go to step 3.

Replace the controller
board. See “Controller

board removal” on
page 372.

Sensor (input) miscellaneous jam 3 service check

Action Yes No

Step 1

Check the media size setup and tray guides for all media trays.

Does the media size in use match the size set for all media trays?

Step 2

Check the media condition in all media trays.

Is any of the media in any of the media trays crumpled or damaged?

Go to step 2. Replace the media, or

Replace the damaged
media.

Replace the
connection.

Go to step 3.

Problem solved.

change the media size
setup.

Go to step 3.

Diagnostic information

64

Action Yes No

7463

Step 3

Reset the machine.

Does the error continue?

Contact the next level
of technical support.

Problem solved.

202 paper jams

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.

1 Pull down the rear door.

2 Firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

Diagnostic information

65

3 Close the rear door.

4 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

200.xx paper jams

Error code Description Action

7463

202.01 Media remains on the sensor (narrow media)
during the warm‑up sequence (MS71x)

202.01 Media remains on the sensor (fuser exit)
during the warm‑up sequence

202.03 The media is late reaching the sensor (fuser
exit) within the specified time

202.05 The media reached the sensor (fuser exit) but
did not clear it within the specified time

202.07 The media reached the sensor (fuser exit) but
did not clear it within the specified time

202.13 The media is late reaching the sensor (fuser
exit) within the specified time

202.14 Expected banner sheet (assumed wide) not
detected by narrow media sensor—possible
accordion jam, unsupported narrow banner
media, or missing signal

202.16 Page at fuser nip before fuser started
ramping
may be receiving more hall interrupts than
intended

toward

desired area. Indicates code

See “Sensor (narrow media) static jam service check” on

page 70.

See “Sensor (fuser exit) static jam service check” on page 67

See

“Sensor (fuser exit) late-arriving jam service check” on

page 68.

See “Sensor (fuser exit) late-leaving jam service check” on

page 67.

See “Sensor (fuser exit) late-leaving jam service check” on

page 67.

See “Sensor (fuser exit) late-arriving jam service check” on

page 68.

See “Sensor (narrow media) late arriving jam service check” on

page 69.

See

“Fuser drive motor control jam service check” on page 63.

.

202.17 Page at fuser nip before fuser reached
acceptable operating temperature. Page
arrived at fuser earlier than expected, so it
was probably staged

202.22 Cartridge Motor—Motor under‑speed error.
Motor made it to closed loop at a steady
state, but then detected speed was below
threshold

202.28 The sensor (fuser exit) rebounded upon being
released by the trailing edge of the media

202.31 Media remains on the sensor (narrow media)
during the warm‑up sequence

202.32 The media reached the sensor (fuser exit) but
did not clear it within the specified time

202.33 Expected wide page not detected by sensor
(narrow media), possible accordion jam or
missing signal

202.43 The media is late reaching the sensor (fuser
exit) within the specified time

Diagnostic information

See “Fuser drive motor control jam service check” on page 63.

See “Fuser drive motor control jam service check” on page 63.

See “Sensor (fuser exit) miscellaneous jam service check” on

page 71.

See “Sensor (narrow media) static jam service check” on

page 70.

See “Sensor (fuser exit) late-leaving jam service check” on

page 67.

See “Sensor (narrow media) late arriving jam service check” on

page 69.

See “Sensor (fuser exit) late-arriving jam service check” on

page 68.

66

Error code Description Action

7463

202.45 Media remains on the sensor (fuser exit)
during the warm‑up sequence

202.49 Fuser info chip error See

See “Sensor (fuser exit) static jam service check” on page 67

“Fuser ID chip control jam service check” on page 71

Sensor (fuser exit) static jam service check

Action Yes No

Step 1

Check the media size setup and tray guides for all media trays.

Does the media size, in use, match the size set for all media trays?

Step 2

Check the media condition in all media trays.

Is any of the media in any of the media trays crumpled or damaged?

Step 3

Reset the machine.

Does the error continue?

Go to step 2. Replace the media, or

Replace the damaged

with

media

Contact the next
highest level of
technical support.

new media.

.

.

change the media size
setup.

Go to step 3.

Problem solved.

Sensor (fuser exit) late-leaving jam service check

Action Yes No

Step 1

Check the rear door.

Is the rear door free of damage and properly closed?

Step 2

Check the fuser unit assembly for damage and life expiration.

Is the above component damaged or has it exceeded life?

Step 3

Check the sensor (fuser output) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor tests.

c Observe the line item fuser exit.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Go to step 2. Close or replace the

Replace the fuser. See

“Fuser removal” on
page 340.

Go to

step 5. Go to step 4.

rear door. See “Rear

door removal” on
page 302.

Go to step 3.

Diagnostic information

67

Action Yes No

7463

Step 4

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 5

Check the upper redrive for damage.

Is the above component free from damage?

Step 6

Perform a print test, and check the upper redrive motor for proper
operation.

Does the above component operate properly?

Step 7

Perform a print test.

Does the problem remain?

Sensor (fuser exit) late-arriving jam service check

Replace the fuser. See

“Fuser removal” on
page 340.

Go to step 6. Replace the upper

Go to step 7. Replace the upper

Contact the next
highest level of
technical support.

Reseat the connection.

redrive. See “Upper

redrive removal” on
page 354.

redrive motor. See

“Upper redrive
removal” on page

.

354

Problem solved.

Action Yes No

Step 1

Check the fuser unit assembly for damage and life expiration.

Is the above component damaged or has it exceeded life?

Step 2

Check the fuser unit assembly for obstructions.

Is the above component free from obstructions?

Step 3

Check the sensor (fuser output) for proper operation.

Replace the fuser. See

“Fuser removal” on
page 340.

Go to step 3. Go to step 3.

Go to

step 5. Go to step 4.

Go to step 2.

a Enter the diagnostic mode.
b Select Base sensor tests.

c Observe the line item output.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Step 4

Check the above sensor for proper connection.

Replace the fuser. See

“Fuser removal” on
page 340.

Reseat the connection.

Is the above sensor connected properly?

Diagnostic information

68

Action Yes No

7463

Step 5

Check the transfer roller for damage.

Is the above component free from damage?

Step 6

Check the media aligner roller for damage.

Is the above component free from damage?

Step 7

Perform a print test, and check the main motor assembly for proper
operation.

Is the media properly transported and able to reach the sensor (fuser
exit)?

Step 8

Perform a print test.

Does the problem remain?

Go to step 6. Replace the transfer

roller. See

roller removal” on
page 336.

Go to step 7. Replace the media

aligner roller. See

“Media aligner roller
removal” on page
317

Go to step 8. Replace the upper

fuser drive motor. See

“Fuser drive motor
removal” on page
374

Contact the next
highest level of
technical support.

Problem solved.

“Transfer

.

.

Sensor (narrow media) late arriving jam service check

Action Yes No

Step 1

Check the media size setup and tray guides for all media trays.

Does the media size, in use, match the size set for all media trays?

Step 2

Check all the media trays for proper media installation.

Is the media properly installed in all the media trays?

Step 3

Check the rear door.

Is the rear door free of damage and properly closed?

Step 4

Check the fuser unit assembly for damage and life expiration.

Is the above component damaged, or has it exceeded life?

Go to step 2. Replace the media, or

Go to step 3. Remove and properly

Go to step 4. Close or replace the

Replace the fuser. See

“Fuser removal” on
page 340.

change the media size
setup.

reinstall the media.

rear door. See “Rear

door removal” on
page 302.

Go to step 5.

Diagnostic information

69

Action Yes No

7463

Step 5

Check the sensor (narrow media) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item input.

Does the display on the operator panel change every time the sensing
area of the above sensor is interrupted or blocked?

Step 6

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 7

Check the upper redrive for damage.

Is the above component free from damage?

Step 8

Perform a print test, and check the upper redrive motor for proper
operation.

Go to

step 7. Go to step 6.

Replace the fuser. See

“Fuser removal” on
page 340.

Go to step 8. Replace the upper

Go to step 9. Replace the upper

Reseat the connection.

redrive. See “Upper

redrive removal” on
page 354.

redrive. See “Upper

redrive removal” on
page 354.

Does the above component operate properly?

Step 9

Perform a print test.

Does the problem remain?

Contact the next
highest level of
technical support.

Sensor (narrow media) static jam service check

Action Yes No

Step 1

Check the fuser for jammed media.

Is the fuser path free from jammed media?

Step 2

Check the sensor (fuser exit) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item fuser exit.

Go to step 2. Remove any jammed

Go to

step 4. Go to step 3.

Problem solved.

media.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Diagnostic information

70

Action Yes No

7463

Step 3

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 4

Perform a print test.

Does the problem remain?

Replace the fuser. See

“Fuser removal” on
page 340.

Go to step 4.

Contact the next
highest level of
technical support.

Sensor (fuser exit) miscellaneous jam service check

Action Yes No

Step 1

Check the sensor (fuser exit) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item fuser exit.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Go to

step 3. Go to step 2.

Reseat the connection.

Go to step 4.

Problem solved.

Step 2

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 3

Perform a print test.

Does the problem remain?

Replace the fuser. See

“Fuser removal” on
page 340.

Contact the next level
of technical support.

Fuser ID chip control jam service check

Action Yes No

Step 1

Ensure the fuser is properly installed.

Is the fuser properly installed?

Step 2

Remove the existing fuser, and install a different fuser.

Does the error remain?

Go to step 2. Reinstall the fuser.

Replace the fuser. See

“Fuser removal” on
page 340.

Go to step 3.

Reseat the connection.

Problem solved.

Problem solved.

Diagnostic information

71

Action Yes No

7463

Step 3

Ensure the cable for socket "J27" on the controller board is properly
connected.

Is the above connection properly connected?

Step 4

Ensure the LVPS connections are properly connected.

Are the above connections properly connected?

Step 5

Reset the machine.

Does the error continue?

Step 6

Reset the machine.

Does the error continue?

203 paper jams

Go to step 4. Reseat the connection.

Go to step 5. Reseat the

connections.

Replace the LVPS. Go to

“LVPS removal” on
page 389.

Go to step 6.

Replace the controller
board. See “Controller

board removal” on
page 372.

Problem solved.

Problem solved.

1 Firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

2 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

203 paper jams

Error code Description Action

203.20 Took too long to ramp up upper redrive
motor

203.21 Upper redrive motor stopped after successful
start up

203.22 Upper redrive motor under‑speed error See “Upper redrive motor control jam service check” on

203.30 Upper redrive motor failed to stop the sheet
at the duplex reverse point within the
specified time

See “Upper redrive motor control jam service check” on

page 73.

See “Upper redrive motor control jam service check” on

page 73.

page 73.

See “Upper redrive motor control jam service check” on

page 73.

Diagnostic information

72

Upper redrive motor control jam service check

Action Yes No

7463

Step 1

Ensure the upper redrive area is free of media jams.

Is the upper redrive area free from media jams?

Step 2

Check the upper redrive for damage.

Is the upper redrive free from damage?

Step 3

Ensure the upper redrive motor cable and the socket "REDRIVE” on the
controller board is properly connected.

Is the above cable properly connected?

Step 4

Reset the machine.

Does the error continue?

Step 5

Reset the machine.

Does the error continue?

Go to step 2. Remove media jams.

Go to step 2.

Go to step 3. Replace the upper

redrive. See “Upper

redrive removal” on
page 354.

Go to step 4. Reseat the connection.

Replace the upper
redrive motor. See

“Upper redrive
removal” on page

.

354

Go to step 5.

Replace the controller
card. See “Controller

board removal” on
page 372.

Problem solved.

Problem solved.

230 paper jams

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.

Diagnostic information

73

1 Pull down the rear door.

2 Firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

7463

3 Close the rear door.

Diagnostic information

74

4 Push the back of the standard tray.

5 Press down the rear duplex flap, then firmly grasp the jammed paper, and then gently pull the paper out.

7463

Note: Make sure all paper fragments are removed.

6 Insert the standard tray.

7 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

Diagnostic information

75

230 paper jams

Error code Description Action

7463

230.01 Media remains on the sensor (duplex path)
during the warm up sequence

230.02 The media reached the sensor (duplex path)
sooner than the specified time

230.03 The media is late reaching the sensor (duplex
path) within the specified time

232.03 The media is late reaching the sensor (input)
within the specified time when exiting the
duplex

230.05 The media reached the sensor (duplex path)
but did not clear it within the specified time

230.07 The media reached the sensor (duplex path)
but did not clear it within the specified time

230.20 Took too long to ramp up duplex motor See “Duplex control jam service check” on page 80.

230.21 Duplex motor stopped after successful start upSee “Duplex control jam service check” on page 80.

230.22 Duplex motor under‑speed error See “Duplex control jam service check” on page 80.

230.28 The sensor (duplex path) rebounded upon
being released by the trailing edge of the
media

“Sensor (duplex path) static jam service check” on

See

page 76.

See “Sensor (duplex path) early arriving jam service check” on

page 77.

See “Sensor (duplex path) never‑ or late‑arriving jam service

check” on page 78.

See “Sensor (input) never-arriving jam (exiting duplex) service

check” on page 81.

See “Sensor (duplex path) late leaving jam service check” on

page 79.

See “Sensor (duplex path) late leaving jam service check” on

page 79.

See “Sensor (duplex path) miscellaneous jam service check” on

page 80.

Sensor (duplex path) static jam service check

Action Yes No

Step 1

Check the duplex path for jammed media.

Is the duplex path free from jammed media?

Step 2

Check the sensor (duplex path) for proper operation.

a Enter the diagnostic mode.
b Select duplex tests.

c Select sensor test.

d Observe the line item sensor.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Go to step 2. Remove any jammed

Go to

step 4. Go to step 3.

media.

Diagnostic information

76

Action Yes No

7463

Step 3

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 4

Perform a print test.

Does the problem remain?

Replace the sensor
(duplex path). See

“Sensor (duplex path)
removal” on page

.

364

Go to step 4.

Contact the next level
of technical support.

Sensor (duplex path) early arriving jam service check

Action Yes No

Step 1

Check the duplex path for jammed media and obstructions.

Is the duplex path free from jammed media and obstructions?

Step 2

Check the sensor (duplex path) for proper operation.

a Enter the diagnostic mode.
b Select duplex tests.

c Select sensor test.

d Observe the line item sensor.

Go to step 2. Remove any jammed

Go to step 4. Go to step 3.

Reseat the connection.

Go to step 4.

Problem solved.

media or obstructions.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Step 3

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 4

Perform a print test.

Does the problem remain?

Diagnostic information

Replace the sensor
(duplex path). See

“Sensor (duplex path)
removal” on page

364.

Contact the next
highest level of
technical support.

Reseat the connection.

Problem solved.

77

Sensor (duplex path) never‑ or late‑arriving jam service check

Action Yes No

7463

Step 1

Check the fuser access door area for media jams and obstructions.

Is the fuser access door area free from jammed media and obstructions?

Step 2

Check the fuser access door area and the attached diverter for damage.

Is the fuser access door and diverter free from damage?

Step 3

Check the duplex path for jammed media and obstructions.

Is the duplex path free from jammed media and obstructions?

Step 4

Check the sensor (duplex path) for proper operation.

a Enter the diagnostic mode.
b Select duplex tests.

c Select sensor test.

d Observe the line item sensor.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Go to step 2. Remove any jammed

media or obstructions.

Go to step 3. Replace the fuser

door.

access

access door removal”
on page 342.

Go to step 4. Remove any jammed

media or obstructions.

Go to

step 6. Go to step 5.

See

“Fuser

Step 5

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 6

Ensure the duplex motor cable is properly connected.

Is the above cable properly connected?

Step 7

Perform a print test.

Does the error continue?

Step 8

Perform a print test.

Does the error continue?

Replace the sensor
(duplex path). See

“Sensor (duplex path)
removal” on page

364.

Go to step 7. Reseat the connection.

Replace the duplex
motor. See “Duplex

motor removal” on
page 338.

Replace the controller
card. See “Controller

board removal” on
page 372.

Reseat the connection.

Problem solved.

Problem solved.

Diagnostic information

78

Sensor (duplex path) late leaving jam service check

Action Yes No

7463

Step 1

Check the duplex path for media jams and obstructions.

Is the duplex path free from media jams and obstructions?

Step 2

Check the duplex front flap for damage.

Is the duplex front flap free from damage?

Step 3

Check the sensor (duplex path) for proper operation.

a Enter the diagnostic mode.
b Select duplex tests.

c Select sensor test.

d Observe the line item sensor.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Step 4

Check the above sensor for proper connection.

Is the above sensor connected properly?

Go to step 2. Remove media jams

and obstructions.

Go to step 3. Replace the duplex

front flap. See “Duplex

front flap removal” on
page 356.

Go to

step 5. Go to step 4.

Replace the sensor
(duplex path) See

“Sensor (duplex path)
removal” on page

364.

Reseat the connection

Step 5

Check the upper redrive for damage.

Is the above component free from damage?

Step 6

Perform a print test and check the upper redrive motor for proper
operation.

Does the above component operate properly?

Step 7

Perform a print test.

Does the problem remain?

Go to step 6. Replace the upper

redrive. See “Upper

redrive removal” on
page 354.

Go to step 7. Replace the upper

redrive motor. See

“Upper redrive
removal” on page

354.

Contact the next
highest level of
technical support.

Problem solved.

Diagnostic information

79

Duplex control jam service check

Action Yes No

7463

Step 1

Check the duplex path for media jams and obstructions.

Is the duplex path free from media jams and obstructions?

Step 2

Ensure the duplex motor cable and the socket "DUPLEX MTR” on the
controller board is properly connected.

Is the above cable properly connected?

Step 3

Reset the machine.

Does the error continue?

Step 4

Reset the machine.

Does the error continue?

Go to step 2. Remove media jams

Go to step 3. Reseat the connection.

Replace the duplex
motor. See “Duplex

motor removal” on
page 338.

Go to step 4.

Replace the controller
board. See “Controller

board removal” on
page 372.

Sensor (duplex path) miscellaneous jam service check

and obstructions.

Problem solved.

Problem solved.

Action Yes No

Step 1

Check the sensor (duplex path) for proper operation.

Go to step 3. Go to step 2.

a Enter the diagnostic mode.
b Select duplex tests.

c Select sensor test.

d Observe the line item sensor.

Does the display on the control panel change every time the sensing area
of the above sensor is interrupted or blocked?

Step 2

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 3

Perform a print test.

Does the problem remain?

Replace the sensor
(duplex path) See

“Sensor (duplex path)
removal” on page

364.

Contact the next level
of technical support.

Reseat the connection.

Problem solved.

Diagnostic information

80

Sensor (input) never-arriving jam (exiting duplex) service check

Action Yes No

7463

Step 1

Check the duplex path for media jams and obstructions.

Is the duplex path free from media jams and obstructions?

Step 2

Check the sensor (input) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item input.

Does the display on the operator panel change every time the sensing
area of the above sensor is interrupted or blocked?

Step 3

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 4

Ensure the duplex motor cable and the socket "DUPLEX MTR” on the
controller board is properly connected.

Go to step 2. Remove media jams

and obstructions.

Go to step 4. Go to step 3.

Replace the sensor
(input). See “Sensor

(input) removal” on
page 329.

Go to step 5. Reseat the connection.

Replace the
connection.

Is the above cable properly connected?

Step 5

Perform a print test.

Does the problem remain?

Step 6

Perform a print test.

Does the problem remain?

235–239 paper jams

1 Lift the tray slightly, and then pull it out completely.

Replace the duplex
motor. See “Duplex

motor removal” on
page 338.

Contact the next
highest level of
technical support.

Problem solved.

Problem solved.

Diagnostic information

81

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2 Push down the front duplex flap, then firmly grasp the jammed paper, and then gently pull the paper to the right

and out of the printer.

Note: Make sure all paper fragments are removed.

3 Insert the tray.

4 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

24x paper jams

1 Check which tray is indicated on the printer display.

2 Lift the tray slightly, and then pull it out completely.

Diagnostic information

82

3 Firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

7463

4 Insert the tray.

5 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

24x paper jams

Error code Description Action

241.02 Sensor (input) early arriving jam See “Sensor (input) early arriving jam service check” on page

58.

241.06 The media is late reaching the sensor (input)
within the specified time from tray 1

241.10 The media is late reaching the sensor (input)
within the specified time from tray 1

241.13 The media is late reaching the sensor (input)
within the specified time from tray 1

241.14 The media is late reaching the sensor (input)
within the specified time from tray 1

241.15 Media tray 1, tray pulled jam See “Media tray 1, tray pulled jam” on page 85.

241.20 Took

too long to ramp up media feeder motor

in tray 1

See “Sensor (input) never‑ or late‑arriving jam service check”

on page 59.

See “Sensor (input) never‑ or late‑arriving jam service check”

on page 59.

See “Sensor (input) never‑ or late‑arriving jam service check”

on page 59.

See “Sensor (input) never‑ or late‑arriving jam service check”

on page 59.

“Media feeder motor control service check” on page 84.

See

241.21 Media feeder motor stall in tray 1 See “Media feeder motor control service check” on page 84.

241.22 Media feeder motor pick motor under‑speed
in tray 1

241.24 Media feeder motor stalled on the last pick
attempt in tray 1

See “Media feeder motor control service check” on page 84.

See “Media feeder motor control service check” on page 84.

Diagnostic information

83

Error code Description Action

7463

241.29 Media feeder motor did not turn off when
lifting the tray

241.32 Media tray not ready See

241.33 The media tray was pulled during the media
pick process

241.41 Media feeder motor stall in tray 1 See

241.42 Media feeder motor pick motor under‑speed
in tray 1

241.43 Media feeder motor stalled on the last pick
attempt in tray 1

242.29 Media feeder motor did not turn off when
lifting the tray

243.29 Media feeder motor did not turn off when
lifting the tray

244.29 Media feeder motor did not turn off when
lifting the tray

245.29 Media feeder motor did not turn off when
lifting the tray

See “Media feeder motor tray lift error service check” on

page 86.

See

See “Media feeder motor control service check” on page 84.

See “Media feeder motor control service check” on page 84.

See “Media feeder motor tray lift error service check” on

page 86.

See “Media feeder motor tray lift error service check” on

page 86.

See “Media feeder motor tray lift error service check” on

page 86.

See “Media feeder motor tray lift error service check” on

page 86.

“Media tray 1, tray pulled jam” on page 85

“Media tray 1, tray pulled jam” on page 85

“Media feeder motor control service check” on page 84.

.

.

Media feeder motor control service check

Action Yes No

Step 1

Check the media size setup and tray guides for media tray 1.

Does the media size in use match the size set for media tray 1?

Step 2

Check the media trays for overfilling.

Are any of the media trays overfilled?

Step 3

Check the media condition in media tray 1.

Is any of the media in media tray 1 crumpled or damaged?

Step 4

Ensure the pick roller is properly installed.

Is the pick roller properly installed?

Go to step 2. Replace the media, or

Remove any excess
new media.

Replace the damaged
media.

Go to step 5. Remove and reinstall

change the media size
setup in media tray 1.

Go to step 3.

Go to step 4.

the pick roller. See

“Pick roller assembly
removal” on page

.

363

Diagnostic information

84

Action Yes No

7463

Step 5

Ensure the cable for socket “INDEX / PAP OUT/ PICK MTR” on the controller
board is properly connected.

Is the above connection properly connected?

Step 6

Reset the machine.

Does the error continue?

Step 7

Reset the machine.

Does the error continue?

Go to step 6. Reseat the connection.

Replace the media
feeder. See “Media

feeder removal” on
page 379.

Go to step 7.

Replace the controller
board. See “Controller

board removal” on
page 372.

Media tray 1, tray pulled jam

Action Yes No

Step 1

Remove all media jams from the media tray and printer.

Go to step 2. Remove all media jams.

Problem solved.

Problem solved.

Are all of the media jams removed?

Step 2

Ensure the media tray is properly inserted into the printer.

Is the media tray properly inserted?

Step 3

Perform a print test.

Does the problem remain?

Go to step 3. Insert the media tray.

Replace the media tray
with a new media tray.

Problem solved.

Diagnostic information

85

Media feeder motor tray lift error service check

Action Yes No

7463

Step 1

Ensure the pick roller is properly installed.

Is the pick roller properly installed?

Step 2

Ensure the cable for socket “INDEX / PAP OUT/ PICK MTR” on the controller
board is properly connected.

Is the above connection properly connected?

Step 3

Reset the machine.

Does the error continue?

Step 4

Reset the machine.

Does the error continue?

Go to step 2. Remove and reinstall

the pick roller. See

“Pick roller assembly
removal” on page

.

363

Go to step 3. Reseat the connection.

Replace the media
feeder. See

feeder removal” on
page 379.

Go to step 4.

Replace the controller
board. See “Controller

board removal” on
page 372.

“Media

Problem solved.

Problem solved.

Sensor (input) never-arriving jam from tray 1 service check

Action Yes No

Step 1

Check the media size setup and tray guides for media tray 1.

Does the media size, in use, match the size set for media tray 1?

Step 2

Check the media tray 1 for overfilling.

Is media tray 1 overfilled?

Step 3

Check the media condition in media tray 1.

Is any of the media in media tray 1 crumpled or damaged?

Step 4

Check the pick roller in the media tray being picked from.

Is the pick roller free of excess wear and contamination?

Go to step 2. Replace the media, or

Remove any excess
new media.

Replace the damaged
media with new.

Go to step 5. Clean or replace the

change the media size
setup in media tray 1.

Go to step 3.

Go to step 4.

pick roller. See “Pick

roller assembly
removal” on page

363.

Diagnostic information

86

Action Yes No

7463

Step 5

Check the aligner assembly for obstructions.

Is the above component free from obstructions?

Step 6

Check the sensor (input) for proper operation.

a Enter the diagnostic mode.
b Select Base sensor test.

c Observe the line item input.

Does the display on the operator panel, change every time the sensing
area of the above sensor is interrupted or blocked?

Step 7

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 8

Perform a print test and check the tray 1 media feeder.

Is the media properly picked and advanced out of the media tray?

Go to step 6. Remove obstructions.

Go to step 8. Go to step 7.

Replace the Sensor
(input). See “Sensor

(input) removal” on
page 329.

Go to step 9. Replace the media

Replace the
connection.

feeder. See “Media

feeder removal” on
page 379.

Step 9

Perform a print test and check the main motor assembly.

Is the media properly transported and able to reach the sensor (input)?

Step 10

Perform a print test.

Does the problem remain?

Go to step 10. Replace the main drive

motor. See “Main drive

motor removal” on
page 377.

Contact the next
highest level of
technical support.

Problem solved.

250 paper jams

1 From the multipurpose feeder, firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

Diagnostic information

87

7463

2 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.

3 Reload paper into the multipurpose feeder.

4 Slide the paper guide until it lightly rests against the edge of the paper.

5 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

250 paper jams

Error code Description Action

250.02 The input sensor detected a late feed during
a pick retry from the MPF media tray

250.06 The media is late reaching the sensor (input)
within the
tray

specified time from the MPF media

Diagnostic information

See “Sensor (input) early arriving jam service check” on page

58.

“Sensor (input) never-arriving jam from MPF media tray

See

service check” on page 89.

88

Error code Description Action

7463

250.10 The media is late reaching the sensor (input)

the

within
tray

250.13 The media is late reaching the sensor (input)
within
tray

250.14 The media is late reaching the sensor (input)
within
tray

250.17 The media is late reaching the sensor (input)
within
tray

250.18 The media is late reaching the sensor (input)
within
tray

specified time from the MPF media

specified time from the MPF media

the

the

specified time from the MPF media

the

specified time from the MPF media

the

specified time from the MPF media

See

“Sensor (input) never-arriving jam from MPF media tray

service check” on page 89.

See

“Sensor (input) never-arriving jam from MPF media tray

service check” on page 89.

See

“Sensor (input) never-arriving jam from MPF media tray

service check” on page 89.

See

“Sensor (input) never-arriving jam from MPF media tray

service check” on page 89.

See

“Sensor (input) never-arriving jam from MPF media tray

service check” on page 89.

Sensor (input) never-arriving jam from MPF media tray service check

Action Yes No

Step 1

Check the media size setup and tray guides for the MPF tray.

Go to step 2. Replace the media, or

change the media size
setup.

Does the media size, in use, match the size set for the MPF tray?

Step 2

Check the MPF tray for overfilling.

Is the MPF tray overfilled?

Step 3

Check the media condition in the MPF tray.

Is any of the media in any of the MPF media tray crumpled or damaged?

Step 4

Check the MPF pick roll assembly.

Is the above component free of excess wear and contamination?

Step 5

Perform a MPF print test and check the MPF pick solenoid for proper
operation.

Does the above component operate properly?

Remove any excess
new media.

Replace the damaged
media with new.

Go to step 5. Clean or replace the

Go to step 6. Replace the MPF pick

Go to step 3.

Go to step 4.

MPF pick roller. See

“MPF pick roller
removal” on page

.

326

solenoid.

Diagnostic information

89

Action Yes No

7463

Step 6

Check the aligner assembly for obstructions.

Is the above component free from obstructions?

Step 7

Check the sensor (input) for proper operation:

a Enter the diagnostic mode
b Select Base sensor test.

c Observe the line item “input”.

Does the display on the operator panel change every time the sensing
area of the above sensor is interrupted or blocked?

Step 8

Check the above sensor for proper connection.

Is the above sensor connected properly?

Step 9

Perform a print test and check the MPF feeder lift plate.

Is the media properly picked and advanced out of the MPF feeder lift
plate?

Go to step 7. Remove obstructions.

Go to step 9. Go to step 8.

Replace the Sensor
(input). See “Sensor

(input) removal” on
page 329.

Go to step 10. Replace the MPF

Replace the
connection.

feeder lift plate. See

“MPF feeder lift plate
removal” on page

322.

Step 10

Perform a print test and check the main motor assembly.

Is the media properly transported and able to reach the sensor (input)?

Step 11

Perform a print test.

Does the problem remain?

Go to step 11. Replace the main drive

motor. See “Main drive

motor removal” on
page 377.

Contact the next
highest level of
technical support.

Problem solved.

Diagnostic information

90

41y.xx paper jams

1 Open the rear output expander door.

7463

2 Firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

3 Close the rear output expander door.

4 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

Diagnostic information

91

43y.xx paper jams

1 Open the rear mailbox door.

7463

2 Firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

3 Close the rear mailbox door.

Diagnostic information

92

4 If the jam is in the mailbox bin, then firmly grasp the jammed paper, and then gently pull it out.

Note: Make sure all paper fragments are removed.

5 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

451 paper jams

1 Open the rear staple finisher door.

7463

2 Firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

Diagnostic information

93

3 Close the staple finisher door.

7463

4 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

455–457 paper jams

1 From the stapler bin, firmly grasp the jammed paper on each side, and then gently pull it out.

Note: Make sure all paper fragments are removed.

Diagnostic information

94

2 Open the stapler door.

3 Pull down the latch of the staple cartridge holder, and then pull the holder out of the printer.

7463

4 Use the metal tab to lift the staple guard, and then remove any loose staples.

Diagnostic information

95

5 Press down the staple guard until it clicks into place.

6 Slide the staples toward the metal bracket.

7463

Note: If the staples are at the rear of the cartridge, then shake the cartridge downward to bring the staples near

the metal bracket.

Diagnostic information

96

7463

Warning—Potential Damage: Do not tap the cartridge on a hard surface. This could damage the cartridge.

7 Push the cartridge holder firmly back into the stapler unit until the cartridge holder clicks into place.

8 Close the stapler door.

9 To clear the message and continue printing, select Next > > Clear the jam, press OK > .

User attendance messages (0-99.99)

User attendance messages (0‑99.99)

User attendance messages

Error
code

30.xx Toner cartridge missing Make sure all cartridges are installed properly.

31.21 Toner Level Sensing reading out of range See “Toner level sensing error check” on

31.22 Excessive toner sensing line noise See “Toner level sensing error check” on

Description Action

page 102.

page 102.

31.23 Abrupt change detected in toner sensing reading See “Toner level sensing error check” on

page 102.

Diagnostic information

97

7463

Error
code

31.25 Toner level sensing calibration capacitor reading too low See “Toner level sensing error check” on

31.40 Toner cartridge smart chip error See “Toner cartridge smart chip error service

31.41 Toner cartridge I2C packet time-out See “Toner cartridge smart chip error service

31.42 Toner cartridge I2C packet has been sent but code timed-out on

31.43 Toner cartridge security error in the send challenge sequence See “Toner cartridge smart chip error service

31.44 Toner cartridge ROM signature error See “Toner cartridge smart chip error service

31.45 Toner cartridge stuck or busy; status register and/or CRI Arbiter

31.60 Imaging unit smart chip error See “Imaging unit smart chip service check” on

31.61 Imaging unit I2C packet time-out See “Imaging unit smart chip service check” on

Description Action

page 102.

check” on page 102.

check” on page 102.

See “Toner cartridge smart chip error service

receiving the data (callback)

register report busy

check” on page 102.

check” on page 102.

check” on page 102.

See “Toner cartridge smart chip error service

check” on page 102.

page 103.

page 103.

31.62 Imaging unit I2C packet has been sent, but code timed-out on

receiving the data (callback)

31.63 Imaging unit security error in the send challenge sequence See “Imaging unit smart chip service check” on

31.64 Imaging unit ROM signature error See “Imaging unit smart chip service check” on

31.65 Imaging unit stuck or busy; status register and/or CRI Arbiter

register report busy)

31.80 Fuser smart chip error See “Fuser unit smart chip service check” on

31.81 Fuser I2C packet time-out See “Fuser unit smart chip service check” on

31.82 Fuser I2C packet has been sent but code timed out on receiving

the data (callback)

31.83 Fuser security error in the send challenge sequence See “Fuser unit smart chip service check” on

31.84 Fuser ROM signature error See “Fuser unit smart chip service check” on

31.85 Fuser smart chip stuck or busy; status register and/or CRI Arbiter

register report busy)

See “Imaging unit smart chip service check” on

page 103.

page 103.

page 103.

See “Imaging unit smart chip service check” on

page 103.

page 104.

page 104.

See “Fuser unit smart chip service check” on

page 104.

page 104.

page 104.

See “Fuser unit smart chip service check” on

page 104.

32.10 Toner cartridge smart chip compatibility error Replace the toner cartridge.

32.11 Imaging unit smart chip compatibility error Replace the imaging unit.

Diagnostic information

98