Lexmark MX81 series User manual

Lexmark MX81x & MX71x MFP
Machine Type 7463-03x, -23x, -43x, -63x,
-83x, -x96
Service Manual
•Start diagnostics
•Maintenance
•Safety and notices
•Trademarks
•Index
December 18, 2012 www.lexmark.com
P/N 12G3100

Product information
Product name:
Lexmark MX71x and MX81x Series
Machine type:
7463
Model(s):
03x, 23x, 436, 636, 836
Edition notice
December 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
7463

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
Change history.........................................................................................................................................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 .............................................................................................................39
Gray background on prints...........................................................................................................................39
Horizontal voids appear on prints ................................................................................................................40
Print irregularities ........................................................................................................................................41
Printer is printing blank pages...................................................................................................................... 42
Printer is printing solid black pages..............................................................................................................43
Shadow images appear on prints .................................................................................................................43
Skewed print ................................................................................................................................................ 44
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Streaked horizontal lines appear on prints ..................................................................................................45
Streaked vertical lines appear on prints.......................................................................................................47
Toner specks appear on prints .....................................................................................................................48
Vertical voids appear on prints ....................................................................................................................49
Toner fog or background shading appears on prints ...................................................................................50
Toner rubs off...............................................................................................................................................51
Paper jams...............................................................................................................................................51
Understanding jam numbers and locations......................................................................................................52
200–201 paper jams .........................................................................................................................................54
Sensor (input) static jam service check............................................................................................................. 58
Sensor (input) early arriving jam service check ................................................................................................58
Sensor (input) never‑or late‑arriving jam service check.................................................................................. 60
Sensor (input) late-leaving or did-not-clear jam service check.........................................................................61
Main drive motor control jam service check ....................................................................................................63
Printhead motor control jam service check......................................................................................................63
Fuser drive motor control jam service check....................................................................................................64
Sensor (input) miscellaneous jam 1 service check............................................................................................64
Sensor (input) miscellaneous jam 2 service check............................................................................................65
Sensor (input) miscellaneous jam 3 service check............................................................................................65
202 paper jams .................................................................................................................................................65
Sensor (fuser exit) static jam service check ......................................................................................................68
Sensor (fuser exit) late-leaving jam service check ............................................................................................68
Sensor (fuser exit) late-arriving jam service check ...........................................................................................69
Sensor (narrow media) late arriving jam service check ....................................................................................70
Sensor (narrow media) static jam service check...............................................................................................71
Sensor (fuser exit) miscellaneous jam service check ........................................................................................72
Fuser ID chip control jam service check............................................................................................................72
203 paper jams .................................................................................................................................................73
Upper redrive motor control jam service check ...............................................................................................73
230 paper jams .................................................................................................................................................74
Sensor (duplex path) static jam service check ..................................................................................................77
Sensor (duplex path) early arriving jam service check......................................................................................78
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 ....................................................................................81
Sensor (input) never-arriving jam (exiting duplex) service check.....................................................................82
235–239 paper jams .........................................................................................................................................82
24x paper jams..................................................................................................................................................83
Media feeder motor control service check....................................................................................................... 85
Media tray 1, tray pulled jam ........................................................................................................................... 86
Media feeder motor tray lift error service check .............................................................................................87
Sensor (input) never-arriving jam from tray 1 service check............................................................................87
250 paper jams .................................................................................................................................................88
Sensor (input) never-arriving jam from MPF media tray service check............................................................90
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41y.xx paper jams ............................................................................................................................................. 92
43y.xx paper jams ............................................................................................................................................. 93
451 paper jams .................................................................................................................................................94
455–457 paper jams .........................................................................................................................................95
User attendance messages (0-99.99)......................................................................................................98
User attendance messages (0‑99.99) ............................................................................................................... 98
Toner level sensing error check ......................................................................................................................103
Toner cartridge smart chip error service check ..............................................................................................103
Imaging unit smart chip service check............................................................................................................ 104
Fuser unit smart chip service check................................................................................................................ 105
Printer hardware errors (100-199.99)...................................................................................................105
Printer hardware error messages(100‑199.99) .............................................................................................. 106
Printhead ID service check..............................................................................................................................110
Printhead service check .................................................................................................................................. 110
Fuser drive motor service check .....................................................................................................................111
Fuser service check .........................................................................................................................................111
LVPS service check .......................................................................................................................................... 112
Toner level sensing service check ................................................................................................................... 112
Main drive motor service check......................................................................................................................113
Media feeder service check ............................................................................................................................113
Redrive motor service check...........................................................................................................................114
Duplex motor service check............................................................................................................................ 114
Toner add motor service check ......................................................................................................................115
Main cooling fan service check .......................................................................................................................115
Cartridge cooling fan service check ................................................................................................................116
LVPS cooling fan service check .......................................................................................................................116
HVPS cooling fan service check.......................................................................................................................117
Miscellaneous cooling fan service check ........................................................................................................ 117
ADF and scanner errors.........................................................................................................................118
ADF and scanner error messages (280‑295.20).............................................................................................. 118
ADF cover open jam........................................................................................................................................ 119
Sensor (ADF pick) static jam ...........................................................................................................................119
Sensor (ADF pick) never arriving or late arriving jam service check ...............................................................120
Sensor (ADF pick) late leaving or not cleared jam service check ....................................................................121
Sensor (ADF 1st scan) static jam service check............................................................................................... 123
Sensor (ADF 1st scan) never arriving or late arriving jam service check.........................................................123
Sensor (ADF 1st scan) late leaving or not cleared jam....................................................................................125
Sensor (ADF 2nd scan) static jam....................................................................................................................126
Sensor (ADF 2nd scan) never arriving or late arriving jam service check ....................................................... 127
Sensor (ADF 2nd scan) late leaving or not cleared jam service check ............................................................ 128
Sensor (ADF media exit) static jam service check...........................................................................................129
Sensor (ADF media exit) never arriving or late arriving jam service check..................................................... 130
Sensor (ADF media exit) late leaving or not cleared jam service check.......................................................... 131
Sensor (multifeed detect) detected multiple sheets service check................................................................133
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ADF and scanner error messages (84x) ..........................................................................................................133
Flatbed scanner and ADF communications failure service check ................................................................... 134
Flatbed scanner home position error service check .......................................................................................135
ADF elevator tray home position error service check.....................................................................................136
ADF elevator tray motor stalled error service check ......................................................................................137
ADF elevator tray motor time-out error service check...................................................................................137
Flatbed scanner CCD initialization error service check ................................................................................... 139
ADF scanner CCD initialization error service check ........................................................................................139
Firmware and/or system electronics errors (900-999.99)....................................................................139
9xx error messages ......................................................................................................................................... 140
Communication failure with flatbed scanner and ADF ...................................................................................143
System software error service check..............................................................................................................143
NVRAM mismatch failure service check .........................................................................................................147
Input/output option hardware errors...................................................................................................149
3xx error messages (300‑399.99) ................................................................................................................... 149
250/550-sheet transport motor failure service check.................................................................................... 153
250/550-sheet media feeder failure service check ........................................................................................154
250/550-sheet controller board failure service check.................................................................................... 156
HCIT lift drive motor failure service check......................................................................................................157
HCIT lift plate failure service check.................................................................................................................159
HCIT transport motor failure service check ....................................................................................................161
Mailbox failure service check..........................................................................................................................163
Input/output option paper jam errors..................................................................................................164
Input option jam error messages (242‑245.99).............................................................................................. 164
250/550-sheet media tray option jam service check...................................................................................... 176
HCIT jam service check ................................................................................................................................... 178
HCIT source jam service check........................................................................................................................ 181
4xx error messages (400‑499.99) ................................................................................................................... 183
Sensor (mailbox pass through) jam service check ..........................................................................................188
Mailbox diverter jam service check ................................................................................................................190
Sensor (finisher pass through) jam service check...........................................................................................192
Finisher left tamper jam service check ...........................................................................................................194
Finisher right tamper jam service check .........................................................................................................195
Finisher ejector jam service check ..................................................................................................................196
Finisher diverter jam service check ................................................................................................................ 197
Finisher paddle jam service check ..................................................................................................................198
Finisher tray holder jam service check ...........................................................................................................199
Stapler carriage jam service check.................................................................................................................. 200
Sensor (media in stapler) jam service check...................................................................................................201
Symptoms..............................................................................................................................................202
Base printer symptoms...................................................................................................................................203
Network service check.................................................................................................................................... 203
Dead machine service check...........................................................................................................................205
ADF/scanner symptoms.................................................................................................................................. 206
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ADF media present service check ...................................................................................................................206
ADF not responding service check ..................................................................................................................207
Option tray symptoms .................................................................................................................................... 207
250/550-sheet media type error service check ..............................................................................................208
250/550-sheet tray undetected service check ...............................................................................................210
HCIT incorrect media error service check .......................................................................................................211
HCIT media type error service check ..............................................................................................................213
HCIT undetected service check.......................................................................................................................215
HCIT media low undetected service check .....................................................................................................216
Finisher side door error service check ............................................................................................................ 218
Mailbox incorrect bin exit service check......................................................................................................... 220
Finisher cartridge error service check ............................................................................................................ 221
Finisher undetected service check.................................................................................................................. 222
Finisher bin error service check ..................................................................................................................... 223
Finisher door undetected service check ........................................................................................................224
Stapler carriage failure service check ............................................................................................................. 225
Finisher bin media present error service check..............................................................................................226
Service menus..........................................................................................229
Using the printer control panel.............................................................................................................229
Using the printer control panel (MX81x)...............................................................................................230
Menus list..............................................................................................................................................231
Diagnostics menu..................................................................................................................................231
Entering diagnostics mode ............................................................................................................................. 232
REGISTRATION ................................................................................................................................................232
Scanner calibration ......................................................................................................................................... 233
PRINT TESTS .................................................................................................................................................... 234
Print Quality Pages (Prt Quality Pgs) ..........................................................................................................234
HARDWARE TESTS ..........................................................................................................................................234
Panel Test ................................................................................................................................................... 234
Button Test................................................................................................................................................. 234
DRAM Test.................................................................................................................................................. 235
Serial Wrap Test .........................................................................................................................................235
USB HS Test Mode......................................................................................................................................236
Beacons Test ..............................................................................................................................................237
DUPLEX TESTS ................................................................................................................................................. 237
Quick Test...................................................................................................................................................237
Top Margin .................................................................................................................................................238
Sensor Test ................................................................................................................................................. 238
Motor Test.................................................................................................................................................. 238
Duplex Feed 1............................................................................................................................................. 239
Duplex Feed 2............................................................................................................................................. 239
INPUT TRAY TESTS ..........................................................................................................................................239
Feed Tests .................................................................................................................................................. 239
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Sensor Tests ............................................................................................................................................... 240
OUTPUT BIN TESTS .........................................................................................................................................240
Feed Tests .................................................................................................................................................. 240
Feed To All Bins .......................................................................................................................................... 241
Sensor Test ................................................................................................................................................. 241
Diverter Test...............................................................................................................................................241
FINISHER TESTS ...............................................................................................................................................242
Staple Test .................................................................................................................................................. 242
Hole Punch Test..........................................................................................................................................242
Feed Test (finisher).....................................................................................................................................242
Finisher Sensor Test ...................................................................................................................................243
BASE SENSOR TEST..........................................................................................................................................243
DEVICE TESTS ..................................................................................................................................................244
Quick Disk Test ........................................................................................................................................... 244
Disk Test/Clean........................................................................................................................................... 244
Flash Test....................................................................................................................................................245
PRINTER SETUP ...............................................................................................................................................245
Defaults ...................................................................................................................................................... 245
Printed Page Count.....................................................................................................................................246
Permanent Page Count (Perm page count)................................................................................................246
Processor ID................................................................................................................................................246
Engine Setting [x] .......................................................................................................................................246
Edge to Edge............................................................................................................................................... 246
Parallel Strobe Adjustment (Par 1 Strobe Adj) ...........................................................................................246
EP SETUP ......................................................................................................................................................... 247
EP Defaults ................................................................................................................................................. 247
Fuser Temperature (Fuser Temp)...............................................................................................................247
Fuser Page Count .......................................................................................................................................247
Warm Up Time ...........................................................................................................................................247
Transfer ...................................................................................................................................................... 248
Print Contrast .............................................................................................................................................248
Charge Roll ................................................................................................................................................. 248
Gap Adjust .................................................................................................................................................. 248
Automatic Darkness Adjust (Auto Dark Adj) ..............................................................................................248
REPORTS ......................................................................................................................................................... 249
Menu Settings Page.................................................................................................................................... 249
Installed Licenses........................................................................................................................................249
EVENT LOG......................................................................................................................................................249
Display Log .................................................................................................................................................249
Print Log ..................................................................................................................................................... 250
Clear Log.....................................................................................................................................................250
Print Log Summary ..................................................................................................................................... 250
Exit Diags......................................................................................................................................................... 250
Configuration menu..............................................................................................................................251
Entering configuration mode.......................................................................................................................... 252
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Roller Kit Counter Value..................................................................................................................................252
Reset Roller Kit Counter..................................................................................................................................252
Reset Separator Roll and Pick Assembly Counter ...........................................................................................252
USB Scan to Local............................................................................................................................................253
Print Quality Pages.......................................................................................................................................... 253
Reports ...........................................................................................................................................................253
Menu Settings Page.................................................................................................................................... 253
Event Log .................................................................................................................................................... 254
Size sensing .....................................................................................................................................................254
Panel Menus ................................................................................................................................................... 254
PPDS Emulation .............................................................................................................................................. 254
Download Emuls ............................................................................................................................................. 255
Safe Mode....................................................................................................................................................... 255
Factory Defaults..............................................................................................................................................255
Energy Conserve .............................................................................................................................................255
Min copy memory........................................................................................................................................... 256
Fax low power support ...................................................................................................................................256
Num pad job assist.......................................................................................................................................... 256
Format fax storage..........................................................................................................................................256
ADF edge erase ............................................................................................................................................... 257
Scanner manual registration...........................................................................................................................257
Disable scanner...............................................................................................................................................258
Paper Prompts ................................................................................................................................................258
Envelope Prompts........................................................................................................................................... 259
Action for Prompts.......................................................................................................................................... 259
Jobs on Disk ....................................................................................................................................................260
Disk Encryption ............................................................................................................................................... 260
Erase All Information on Disk.......................................................................................................................... 260
Wipe All Settings.............................................................................................................................................261
Font Sharpening..............................................................................................................................................261
A4 Fuser ..........................................................................................................................................................261
Require Standby.............................................................................................................................................. 261
A5 Loading ...................................................................................................................................................... 262
UI Automation ................................................................................................................................................ 262
LES Applications ..............................................................................................................................................262
Key Repeat Initial Delay ..................................................................................................................................263
Key Repeat Rate.............................................................................................................................................. 263
Clear Supply Usage History .............................................................................................................................263
Clear Custom Status........................................................................................................................................263
USB Speed....................................................................................................................................................... 264
Automatically Display Error Screens............................................................................................................... 264
USB PnP .......................................................................................................................................................... 264
Entering invalid engine mode................................................................................................................264
Entering recovery mode........................................................................................................................265
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Accessing the Network SE menu...........................................................................................................265
Service Engineer menu..........................................................................................................................265
Accessing the service engineer (SE) menu......................................................................................................265
Service engineer (SE) menu ............................................................................................................................265
Repair information...................................................................................267
Removal precautions.............................................................................................................................267
Handling ESD‑sensitive parts ..........................................................................................................................267
Controller board/control panel replacement .................................................................................................268
eSF solutions backup ......................................................................................................................................268
Ribbon cable connectors ................................................................................................................................269
Zero Insertion Force (ZIF) connectors ........................................................................................................ 269
Horizontal top contact connector ..............................................................................................................270
Horizontal bottom contact connector........................................................................................................273
Vertical mount contact connector .............................................................................................................276
Horizontal sliding contact connector ......................................................................................................... 279
Low Insertion Force (LIF) connector...........................................................................................................282
Adjustments..........................................................................................................................................283
Media aligner roller adjustment ..................................................................................................................... 283
Polygon printhead mechanical registration adjustment ................................................................................ 284
ADF skew adjustments.................................................................................................................................... 287
ADF skew adjustment (front side).............................................................................................................. 287
ADF skew adjustment (back side) .............................................................................................................. 288
ADF skew adjustment (deskew roller)........................................................................................................289
Media squareness check.................................................................................................................................291
Print skew correction...................................................................................................................................... 292
Copy skew correction ..................................................................................................................................... 294
Removal procedures.............................................................................................................................295
Base printer - cover removals...............................................................................................................295
Column left front cover removal (MX81x) ...................................................................................................... 296
Column left outer cover removal (MX81x) .....................................................................................................297
Column right inner cover removal .................................................................................................................. 298
Column right outer cover removal..................................................................................................................300
Left cover removal (MX71x)............................................................................................................................301
Left cover removal (MX81x)............................................................................................................................303
Left inner cover removal.................................................................................................................................305
Rear door removal .......................................................................................................................................... 307
Rear lower cover removal............................................................................................................................... 309
Rear lower door removal (MX81x) .................................................................................................................310
Right cover removal (MX71x) ......................................................................................................................... 311
Right cover removal (MX81x) ......................................................................................................................... 312
Right inner cover removal (MX71x) ................................................................................................................313
Top cover removal .......................................................................................................................................... 314
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Base printer - front removals................................................................................................................314
Duplex exit diverter removal .......................................................................................................................... 314
Front door removal......................................................................................................................................... 316
Inner guide deflector removal ........................................................................................................................318
Laser printhead removal................................................................................................................................. 320
Media aligner roller removal ..........................................................................................................................323
Media turn guide removal .............................................................................................................................. 325
Media vertical guide removal ......................................................................................................................... 326
MPF feeder lift plate removal .........................................................................................................................328
MPF pick roller removal..................................................................................................................................331
MPF tray removal ...........................................................................................................................................333
Sensor (input) removal ...................................................................................................................................335
Sensor (toner density) removal ......................................................................................................................336
Transfer roller left arm with cable removal....................................................................................................338
Transfer roller right arm removal ...................................................................................................................339
Transfer roller removal ...................................................................................................................................342
Base printer - rear removals..................................................................................................................344
Duplex motor removal....................................................................................................................................345
Fuser removal ................................................................................................................................................. 347
Fuser access door removal ............................................................................................................................. 349
Left frame pivot removal ................................................................................................................................ 350
Right frame pivot removal ..............................................................................................................................351
Sensor (rear door interlock) removal..............................................................................................................352
Base printer - top removals...................................................................................................................352
Cartridge door removal ..................................................................................................................................353
Output bin sensor cover removal ...................................................................................................................356
Sensor (standard bin full) removal .................................................................................................................356
Standard bin cover removal (MX71x) .............................................................................................................357
Standard bin cover removal (MX81x) .............................................................................................................359
Upper redrive motor removal.........................................................................................................................361
Upper redrive removal....................................................................................................................................363
Base printer - bottom removals............................................................................................................364
Duplex removal (MX71x) ................................................................................................................................365
Duplex removal (MX81x) ................................................................................................................................366
Duplex front flap removal............................................................................................................................... 368
Duplex rear flap removal ................................................................................................................................369
Left frame extension removal (MX71x) ..........................................................................................................370
Left frame extension removal (MX81x) ..........................................................................................................372
Media tray removal ........................................................................................................................................374
Media size actuator removal ..........................................................................................................................375
Pick roller assembly removal ..........................................................................................................................377
Sensor (duplex path) removal.........................................................................................................................378
Sensor (tray 1 media out) removal ................................................................................................................. 379
Separator roller assembly removal................................................................................................................. 381
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Right frame extension (MX71x) ...................................................................................................................... 381
Right frame extension removal (MX81x) ........................................................................................................383
Base printer - left removals...................................................................................................................385
Controller board removal ............................................................................................................................... 386
Controller board access cover removal ..........................................................................................................387
Controller board access shield removal.......................................................................................................... 388
Fuser drive motor removal .............................................................................................................................388
Main cooling fan removal ...............................................................................................................................390
Main drive motor removal..............................................................................................................................391
Media feeder removal ....................................................................................................................................393
PCBA housing removal....................................................................................................................................394
Sensor (control panel interlock) removal .......................................................................................................396
Sensor (pick roller position) removal.............................................................................................................. 397
Toner add motor removal............................................................................................................................... 398
Base printer - right removals.................................................................................................................399
Cartridge cooling fan removal ........................................................................................................................400
Duplex cooling fan removal ............................................................................................................................ 401
HVPS removal .................................................................................................................................................402
LVPS removal .................................................................................................................................................. 403
Power switch removal ....................................................................................................................................406
Control panel removals.........................................................................................................................408
10‑inch display removal..................................................................................................................................409
10‑inch display (MX81x) removal ................................................................................................................... 413
Control panel removal (MX71x)...................................................................................................................... 414
Control panel removal (MX81x)...................................................................................................................... 417
Control panel board removal (MX71x) ........................................................................................................... 421
Control panel board removal (MX81x) ........................................................................................................... 422
Control panel front cover removal .................................................................................................................426
Control panel latch removal ...........................................................................................................................428
Control panel left bezel removal (MX71x) ......................................................................................................429
Control panel right bezel removal (MX71x).................................................................................................... 431
Left control panel hinge removal....................................................................................................................432
Right control panel hinge removal.................................................................................................................. 435
Tilting display removal (7‑inch and 10‑inch)................................................................................................... 438
Standard bin LED board removal ....................................................................................................................440
Control panel cover removal .......................................................................................................................... 441
Control panel buttons removal....................................................................................................................... 442
Control panel speaker removal.......................................................................................................................443
USB cable removal .......................................................................................................................................... 444
ADF and scanner removals....................................................................................................................445
ADF/scanner assembly removal .....................................................................................................................445
ADF removals ..................................................................................................................................................448
ADF assembly removal ............................................................................................................................... 448
ADF bottom door removal .........................................................................................................................449
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ADF scanner CCD removal..........................................................................................................................450
ADF controller card removal ......................................................................................................................454
ADF door removal ......................................................................................................................................455
ADF feed belt removal................................................................................................................................ 456
ADF float plate with springs removal .........................................................................................................457
ADF front cover removal ............................................................................................................................459
ADF front side drive parts pack removal ....................................................................................................460
ADF input tray removal .............................................................................................................................. 461
ADF left hinge removal............................................................................................................................... 463
ADF left lower cover removal..................................................................................................................... 464
ADF lift tray removal ..................................................................................................................................466
ADF pick roller cover removal ....................................................................................................................467
ADF pick roller removal .............................................................................................................................. 468
ADF push button switch sensor removal.................................................................................................... 469
ADF rear cover removal..............................................................................................................................470
ADF rear side drive parts pack removal .....................................................................................................472
ADF right hinge removal.............................................................................................................................472
ADF separation guide removal ...................................................................................................................473
ADF separator roller removal..................................................................................................................... 474
Sensor (ADF 1st scan) removal...................................................................................................................476
Sensor (ADF elevator tray home position) removal ...................................................................................477
Sensor (ADF lower door interlock) removal ...............................................................................................478
Sensor (ADF top door interlock) removal...................................................................................................479
ADF tray lift drive removal .........................................................................................................................480
Bin extension removal................................................................................................................................484
Deskew idler shaft removal........................................................................................................................ 484
First scan roll drive gear (40t) removal.......................................................................................................485
Interrupt with flag sensor (ADF 2nd scan) removal ...................................................................................486
Interrupt with flag sensor (ADF media exit) removal ................................................................................. 487
Magnetic clutch removal............................................................................................................................489
Multifeed sensor parts kit removal ............................................................................................................ 490
Sensor (ADF gap detect) removal...............................................................................................................492
Sensor (ADF media present) removal.........................................................................................................493
Sensor (ADF pick) removal ......................................................................................................................... 494
Sensor (ADF skew detect) removal ............................................................................................................495
Separation roll drive gear (29t) removal ....................................................................................................496
Flatbed scanner removals...............................................................................................................................497
Scanner unit removal .................................................................................................................................497
Flatbed scanner assembly removal ............................................................................................................ 499
Flatbed scanner front cover removal .........................................................................................................502
Flatbed glass cushion removal ...................................................................................................................504
Flatbed scanner left cover removal topic...................................................................................................505
Flatbed scanner right cover removal..........................................................................................................506
Flatbed scanner CCD removal .................................................................................................................... 506
Flatbed scanner drive parts kit removal..................................................................................................... 510
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Flatbed scanner glass removal ...................................................................................................................513
Flatbed scanner PCBA removal .................................................................................................................. 515
Flatbed tension pulley with belt removal...................................................................................................516
250/550-sheet media tray option removals (MX710 and MX711).......................................................520
250/550-sheet media tray option removal.....................................................................................................521
Media tray separation roller removal.............................................................................................................521
Media tray assembly removal......................................................................................................................... 521
Media tray front cover removal......................................................................................................................522
Drawer pick roller removal ............................................................................................................................522
Sensor (pick roll position) removal ................................................................................................................522
Drawer assembly rear cover removal .............................................................................................................523
Drawer assembly left cover removal .............................................................................................................. 524
Drawer controller PCBA removal.................................................................................................................... 525
Drawer upper interface cable removal........................................................................................................... 526
Drawer lower interface cable removal ...........................................................................................................527
Drawer media feeder removal ....................................................................................................................... 528
Drawer transport motor removal ...................................................................................................................530
Sensor (drawer pass through) removal ..........................................................................................................531
Sensor (pick) removal .....................................................................................................................................533
High capacity input tray option removals (MX710 and MX711)...........................................................536
HCIT and drawer assembly removal ............................................................................................................... 537
HCIT removal .................................................................................................................................................. 537
HCIT drawer assembly removal ......................................................................................................................537
HCIT separator roll assembly removal ............................................................................................................538
HCIT media guide removal..............................................................................................................................538
HCIT front cover removal................................................................................................................................539
HCIT pick arm assembly removal ....................................................................................................................541
HCIT drawer assembly rear cover removal.....................................................................................................542
HCIT drawer assembly left cover removal ......................................................................................................543
HCIT drawer assembly right cover removal ....................................................................................................545
HCIT controller PCBA removal ........................................................................................................................ 547
HCIT top cover assembly removal ..................................................................................................................548
HCIT lift drive motor removal ......................................................................................................................... 550
HCIT drawer assembly interface cable removal .............................................................................................552
Sensor (HCIT media low) with flag removal....................................................................................................553
Sensor (pick roll position) removal ................................................................................................................. 554
Sensor (HCIT pick) removal .............................................................................................................................556
HCIT media feeder removal ............................................................................................................................ 557
550-sheet media tray option removals (MX810, MX811, and MX812).................................................559
550-sheet media tray and drawer assembly removal ....................................................................................560
Media tray separation roller removal.............................................................................................................560
Media tray assembly removal......................................................................................................................... 560
Media tray front cover removal......................................................................................................................561
Drawer pick roller removal ............................................................................................................................561
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Sensor (pick roll position) removal ................................................................................................................561
Drawer assembly rear cover removal .............................................................................................................562
Drawer assembly left cover removal .............................................................................................................. 563
Drawer controller PCBA removal.................................................................................................................... 564
Drawer upper interface cable removal........................................................................................................... 565
Drawer lower interface cable removal ...........................................................................................................566
Drawer media feeder removal ....................................................................................................................... 567
Drawer transport motor removal ...................................................................................................................569
Sensor (drawer pass through) removal ..........................................................................................................570
Sensor (pick) removal .....................................................................................................................................572
High capacity input tray option removals (MX810, MX811, and MX812).............................................575
HCIT and drawer assembly removal ............................................................................................................... 576
HCIT removal .................................................................................................................................................. 576
HCIT drawer assembly removal ......................................................................................................................576
HCIT separator roll assembly removal ............................................................................................................577
HCIT media guide removal..............................................................................................................................577
HCIT front cover removal................................................................................................................................578
HCIT pick arm assembly removal ....................................................................................................................579
HCIT drawer assembly rear cover removal.....................................................................................................580
HCIT drawer assembly left cover removal ......................................................................................................580
HCIT drawer assembly right cover removal ....................................................................................................581
HCIT controller PCBA removal ........................................................................................................................ 582
HCIT top cover assembly removal ..................................................................................................................583
HCIT lift drive motor removal ......................................................................................................................... 585
HCIT drawer assembly interface cable removal .............................................................................................587
Sensor (HCIT closed) with flag removal ..........................................................................................................588
Sensor (pick roll position) removal ................................................................................................................. 589
Sensor (HCIT pick) removal .............................................................................................................................591
HCIT media feeder removal ............................................................................................................................ 592
Staple finisher/offset stacker option removals.....................................................................................594
Staple finisher/offset stacker option removal ................................................................................................ 595
Stapler/offset stacker rear door removal .......................................................................................................595
Stapler/offset stacker left cover removal .......................................................................................................597
Stapler/offset stacker top cover removal .......................................................................................................599
Stapler/offset stacker spring with string removal ..........................................................................................601
Media stack flap (right) removal.....................................................................................................................602
Media stack flap (left) removal ....................................................................................................................... 603
Standard output bin LED removal...................................................................................................................606
Sensor (finisher/stacker bin media present) removal ....................................................................................607
Tamper motor (right) removal........................................................................................................................608
Tamper motor (left) removal ..........................................................................................................................608
Tamper drive belt removal ............................................................................................................................. 609
Paddle drive motor removal ........................................................................................................................... 610
Stapler/offset stacker lower interface cable removal ....................................................................................611
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Stapler/offset stacker controller PCBA removal ............................................................................................. 613
Sensor (bin full send) removal ........................................................................................................................614
Sensor (bin full receive) removal ....................................................................................................................615
Stapler-unique FRU removals ......................................................................................................................... 617
Stapler right cover removal........................................................................................................................617
Stapler cartridge access door removal .......................................................................................................619
Stapler carriage assembly removal ............................................................................................................ 620
Sensor (cartridge door interlock) removal .................................................................................................621
Stapler door close limit switch removal ..................................................................................................... 621
Mailbox option removals......................................................................................................................623
Mailbox assembly removal ............................................................................................................................. 624
Mailbox top cover removal.............................................................................................................................624
Mailbox rear door removal .............................................................................................................................624
Mailbox right cover removal...........................................................................................................................626
Mailbox spring with string removal ................................................................................................................ 627
Mailbox solenoid removal ..............................................................................................................................628
Mailbox left cover removal.............................................................................................................................630
Mailbox controller PCBA removal...................................................................................................................631
Sensor (mailbox divert motor) removal..........................................................................................................633
Mailbox lower interface cable removal ..........................................................................................................634
Mailbox upper interface cable removal..........................................................................................................636
Mailbox divert motor removal........................................................................................................................ 636
Mailbox media bin full flag removal ...............................................................................................................638
Sensor (mailbox bin full receive) removal ......................................................................................................639
Mailbox belt removal......................................................................................................................................642
Mailbox output bin LED assembly removal ....................................................................................................644
Component locations...............................................................................649
Connectors............................................................................................................................................649
Controller board....................................................................................................................................649
ADF controller board.............................................................................................................................660
Flatbed controller board.......................................................................................................................662
Maintenance............................................................................................665
Inspection guide....................................................................................................................................665
Scheduled maintenance........................................................................................................................667
Fuser maintenance kits................................................................................................................................... 667
Replacing fuser maintenance kits............................................................................................................... 667
Identifying the type of fuser used in the printer ........................................................................................667
Resetting the Roller Kit counter......................................................................................................................669
Preventive maintenance.......................................................................................................................670
Device‑specific preventive maintenance ........................................................................................................670
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Lubrication specification.......................................................................................................................670
Cleaning the printer..............................................................................................................................670
Cleaning the exterior of the printer................................................................................................................670
Cleaning the scanner glass..............................................................................................................................670
Cleaning the printhead lenses ........................................................................................................................671
Parts catalog............................................................................................672
Legend...................................................................................................................................................673
Assembly 1: Covers (MX71x).................................................................................................................675
Assembly 2: Covers (MX81x).................................................................................................................677
Assembly 3: Paper path.........................................................................................................................681
Assembly 4: Fusers................................................................................................................................683
Assembly 5: Electronics.........................................................................................................................685
Assembly 6: Drive motors.....................................................................................................................689
Assembly 7: Duplex...............................................................................................................................691
Assembly 8: Frame................................................................................................................................693
Assembly 9: Control panel (MX71x)......................................................................................................695
Assembly 10: Control panel 10‑inch display (MX81x)...........................................................................699
Assembly 11: Paper tray........................................................................................................................701
Assembly 12: ADF assembly..................................................................................................................703
Assembly 13: ADF covers.......................................................................................................................705
Assembly 14: ADF mechanical...............................................................................................................709
Assembly 15: ADF electronics...............................................................................................................711
Assembly 16: Flatbed scanner (MX710 and MX711).............................................................................715
Assembly 17: Flatbed scanner (MX810, MX811 and MX812)...............................................................719
Assembly 18: Input options (MX710 and MX711).................................................................................723
Assembly 19: Input options (MX810, MX811 and MX812)...................................................................725
Assembly 20: 250-sheet tray option (MX710 and MX711)...................................................................727
Assembly 21: 550-sheet tray option (MX710 and MX711)...................................................................729
Assembly 22: 550-sheet tray option (MX810, MX811, MX812)............................................................731
Assembly 23: High capacity input tray option 1 (MX710 and MX711)..................................................733
Assembly 24: High capacity input tray option 2 (MX710 and MX711)..................................................735
Assembly 25: High capacity input tray option 3 (MX810, MX811, MX812)..........................................737
Assembly 26: High capacity input tray option 4 (MX810, MX811, MX812)..........................................739
Assembly 27: Output options (MX810, MX811, and MX812)...............................................................741
Assembly 28: Staple finisher option 1...................................................................................................743
Assembly 29: Staple finisher option 2...................................................................................................745
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Assembly 30: Mailbox option 1.............................................................................................................747
Assembly 31: Mailbox option 2.............................................................................................................749
Assembly 32: Offset stacker option 1....................................................................................................751
Assembly 33: Offset stacker option 2....................................................................................................753
Assembly 34: Miscellaneous.................................................................................................................755
Assembly 35: Power cords....................................................................................................................757
Appendix A: Printer specifications............................................................759
Power specifications..............................................................................................................................759
Operating clearances.............................................................................................................................760
Acoustics...............................................................................................................................................760
Environment..........................................................................................................................................761
Processor...............................................................................................................................................761
Security reset jumper............................................................................................................................761
Printer skew specifications....................................................................................................................762
Appendix B: Options and features............................................................765
Available internal options.....................................................................................................................765
Input options supported.......................................................................................................................765
Output options supported.....................................................................................................................765
Physical specifications (options)............................................................................................................766
Appendix C: Theory of operation..............................................................767
Models MX81x and MX71x paper path rollers and sensors..................................................................768
Models MX81x and MX71x sensors......................................................................................................769
Functions of main components.............................................................................................................769
Media tray assembly.......................................................................................................................................769
Rear media guide ............................................................................................................................................ 770
Side media guide............................................................................................................................................. 770
Media tray.............................................................................................................................................770
Media feeder ..................................................................................................................................................770
Sensor (media size) ......................................................................................................................................... 770
Sensor (pick roller position) ............................................................................................................................ 770
Multi-purpose feeder (MPF).................................................................................................................770
MPF pick roller................................................................................................................................................ 771
MPF pick solenoid ...........................................................................................................................................771
Registration...........................................................................................................................................771
Sensor (input) ................................................................................................................................................. 772
Duplex...................................................................................................................................................772
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Sensor (duplex path).......................................................................................................................................772
Transfer.................................................................................................................................................772
Transfer roller ................................................................................................................................................. 773
Printhead...............................................................................................................................................774
Fuser components.................................................................................................................................775
Heat belt (belt fuser)....................................................................................................................................... 776
Pressure roll .................................................................................................................................................... 776
Thermistor ......................................................................................................................................................776
Sensor (fuser exit)........................................................................................................................................... 777
Exit.........................................................................................................................................................777
Sensor (standard bin full)................................................................................................................................ 777
Drive......................................................................................................................................................777
Main drive motor assembly ............................................................................................................................778
Fuser drive motor assembly ...........................................................................................................................778
Toner add motor assembly ............................................................................................................................. 778
Redrive motor assembly .................................................................................................................................778
Sensors..................................................................................................................................................779
Electrical components and controller...................................................................................................780
Sensor (control panel door interlock) .............................................................................................................780
Sensor (rear door interlock)............................................................................................................................780
Main cooling fan .............................................................................................................................................780
Cartridge cooling fan....................................................................................................................................... 780
Duplex cooling fan .......................................................................................................................................... 780
LVPS board assembly ......................................................................................................................................781
HVPS board assembly ..................................................................................................................................... 781
Controller board ............................................................................................................................................. 781
Xerographic and print cartridge components.......................................................................................781
Document scanning at ADF...................................................................................................................785
Document scanning at platen...............................................................................................................785
Names and functions of components...................................................................................................786
Flatbed scanner .............................................................................................................................................. 786
ADF components ............................................................................................................................................788
Supported paper sizes, types, and weights...........................................................................................790
Paper types and weights supported by the printer ........................................................................................790
Paper sizes supported by the printer..............................................................................................................791
Paper sizes, types, and weights supported by the optional finishers.............................................................792
Output options theory...........................................................................................................................794
Mailbox theory................................................................................................................................................794
Staple finisher theory...................................................................................................................................... 795
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Appendix D: Acronyms.............................................................................797
Acronyms...............................................................................................................................................797
Index........................................................................................................799
Part number index...................................................................................807
Part name index.......................................................................................821
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