Lexmark X940E - TTM Theory

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1-56 Service Manual

7510

TTM theory

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Default Chapter3
- Table of Contents3
Table of Contents21
Notices and Safety Information21
- Laser Notice21
- Safety Information27
Preface30
- Conventions30
General Information31
- Printer Technology31
- Processor31
- Memory31
- Acoustics31
- Environment31
- Connectivity31
- Size and Weight - Without Finisher31
- Specifications31
- Printer Overview33
  - Basic Model33
  - Configured Model34
- Printer Theory35
- Printhead Assembly44
  - Printhead Shutter47
- Fuser48
- Exit49
- Drive50
- Electrical Components and Controller53
Control56
- Media Size Control56
- Printhead Control56
- Fuser Control57
- Xerographic Process During a Print Cycle58
- Document Scanning64
  - Document Scanning at Platen64
  - Document Scanning at ADF65
- Image Data Flow71
- Drive Torque Transfer Scheme72
  - ADF Feed Motor Assembly72
  - ADF Registration Motor72
    - Gear Layout73
- Names and Functions of Components75
  - Scanner Unit Assembly75
  - Adf76
- Control80
TTM Theory86
- Media Transport87
  - Media Transport Path87
  - Functions of Main Components88
- Media Tray Assembly88
- TTM Media Feed Units91
- Main Components92
3TM Theory95
- Media Transport96
- Media Tray Assembly97
- 3TM Media Feed Units98
- Main Components99
1TM Theory102
- Media Transport103
- Duplex109
- Tools Required for Service112
- Acronyms113
Diagnostic Information115
- Start115
- Confirm the Installation Status116
- Power-On Reset Sequence116
- Control Panel117
  - Home Screen and Home Screen Buttons119
- Using the LCD Touch-Screen Buttons122
- Error Code Table127
- Service Checks153
Sensor (Tray 4 Feed-Out) Late Jam175
Sensor (Tray 3 Feed-Out) on Jam (Feeding from Tray 4)177
Sensor (Registration) Late Jam (Feeding from the MPF)178
Switch (Sheet Through) Static Jam180
Sensor (Sheet Through) Late Jam181
Sensor (ADF Pre-Registration) Late Jam (Side 1)183
Sensor (ADF Pre-Registration) Lag Jam184
Sensor (ADF Pre-Registration) Static Jam187
Sensor (ADF Registration) Late Jam (Side 1)188
Sensor (ADF Registration) Late Jam (Side 2)189
Sensor (ADF Registration) Lag Jam192
Sensor (ADF Inverter) Late Jam (Inverting)194
Sensor (ADF Registration) Lag Jam (Inverting)196
Sensor (ADF Width APS1), Sensor (ADF Width APS 2) and Sensor (ADF Width APS 3) Static199
Sensor (ADF Width APS 1) Static Jam200
Sensor (ADF Width APS 2) Static Jam201
Sensor (ADF Width APS 3) Static Jam202
Sensor (ADF Registration) Static Jam203
Sensor (ADF Inverter) Lag Jam (Inverting)203
- Sensor (ADF Inverter) Late Jam 2205
291 02 Sensor (ADF Inverter) Late Jam 2207
Sensor (ADF Inverter) Lag Jam207
ADF Raised Jam209
ADF Left Cover Jam209
Document Missing Jam209
Sensor (ADF Inverter) Static Jam210
Sensor (ADF Pre-Registration) Late Jam (Side 2)211
Sensor (ADF Pre-Registration) Lag Jam (Inverting)213
Size Mismatch Jam (MIX-Size)216
Size Mismatch Jam (no MIX-Size)218
Invalid Combine Size Jam219
Too Short Size Jam220
Too Long Size Jam221
Mixed Size Not Supported223
Scanner Cable Missing or Unplugged223
Black Toner Cartridge Detection Error 841.00 Image Pipeline ASIC Error223
Scanner Communication Error224
Scanner Communication Error226
Scanner Communication Error227
Scanner Unit Assembly - ADF Communication Error227
Scanner Communication Error (by Scanner)228
Scanner Unit Assembly Communication Error228
Sensor (Scanner HP) Error229
Scanner Carriage over Run Error230
ADF RAM Test Error231
ADF EEPROM Error231
ADF Pick Roll Position Lift up Error231
Scanner Unit Assembly Connection Error233
Scanner Unit Assembly EEPROM Error233
Scanner Unit Assembly EEPROM Sub System Error233
Scanner Cooling Fan Error234
Image Processing Error235
Scanner Controller Card Assembly Error 1235
Scanner Controller Card Assembly Error 2236
Exposure Lamp Error236
White Reference/Exposure Lamp Illumination Error237
CCD Error238
CCD Initialization (Lamp On) Error239
CCD Initialization (Lamp Off) Error240
Scanner Communication Error240
- Scanner Communication Error241
Sensor (ADF Width APS X) Error241
Scanner Unit Assembly Software Logic Error243
Switch (Platen Interlock) Open243
Modem Error244
Fax Storage Error244
Fax/Modem Configuration ID Mismatch245
Hard Drive/Configuration ID Mismatch245
901 XX RIP Card Assembly Software Error246
900 XX RIP Card Assembly Software Error246
General Upper Engine Error Fuse #1246
- XX RIP Card Assembly Software Error246
General Upper Engine Error Fuse #2248
General Upper Engine Error Fuse #3248
General Lower Engine Error Fuse #1249
General Lower Engine Error Fuse #2250
General Lower Engine Error Fuse #3250
General Lower Engine Error Fuse #4251
General Lower Engine Error Fuse #5252
K Developer/Transport Drive Assembly Motor Error254
K PC Drive Motor Error255
CMY PC Drive Motor Error256
Developer Drive Motor Error256
Sensor (Transfer Belt HP) Late Error257
Transfer Belt Position Failure258
Sensor (Transfer Belt Edge) Failure259
Sensor (2Nd Transfer Roll Retract HP) Late Error259
Sensor (2Nd Transfer Roll Retract HP) Lag Error261
Sensor (CMY Transfer Roll Retract HP) Late Error262
Sensor (CMY Transfer Roll Retract HP) Lag Error262
CMY Transfer Roll Retract Motor Time out263
NVM Read/Write Cannot be Executed Error263
Marking Device Video Error263
Marking Device Xerographics Error264
Marking Device Other1 Error264
Marking Device Paper Handling Error264
Marking Device Other2 Error264
Printhead Polygon Mirror Motor Error265
Y Laser SOS Internal Error265
M Laser SOS Internal Error265
C Laser SOS Internal Error266
K Laser SOS Internal Error266
Printhead Control Error267
Waste Toner Full Error267
LVPS Cooling Fan Error268
Transfer Belt Drive Motor Cooling Fan Error268
Fuser Cooling Fan Lock Error269
Standard Media Exit Shift Error269
Fuser Main Lamp Overheat Error270
Front Thermistor Disconnection Error270
Fuser Sub Lamp Overheat Error271
Rear Thermistor Disconnection Error271
Main Lamp Warm up Error272
Main Lamp On-Time Error273
Sub Lamp Warm-Up Failure273
Sub Lamp On-Time Error274
Yellow Toner RFID Communication Error274
Magenta Toner RFID Communication Error275
Cyan Toner RFID Communication Error275
Black Toner RFID Communication Error276
Sensor (y ATC) Error276
Sensor (M ATC) Error277
Sensor (C ATC) Error277
Sensor (K ATC) Error278
MPF Tray 5 Size Sensing Error278
Switch (Media Size) Size Sensing Error (Tray 1)279
Sensor (Media Level) Late Error (Tray 1)280
Switch (Media Size) Size Sensing Error (Tray 2)281
Sensor (Media Level) Late Error (Tray 2)281
Switch (Media Size) Size Sensing Error (Tray 3)282
Sensor (Media Level) Late Error (Tray 3)283
Switch (Media Size) Size Sensing Error (Tray 4)284
Sensor (Media Level) Late Error (Tray 4)285
Through 950.29 EPROM Mismatch Failure286
Through 950.60 EPROM Mismatch Failure287
RIP Card Assembly NVRAM Failure288
Interconnect Card Assembly NVRAM CRC Failure288
Operator Panel Assembly NVRAM Failure289
Interconnect Card Assembly NVRAM Failure289
RIP Card Assembly NAND CRC Failure290
RIP Card Assembly Processor Failure290
RIP Card Assembly Processor over Temperature Failure290
RIP Card Assembly Cooling Fan Failure291
RIP Card Assembly FPGA Failure291
Communication Error with 1TM, 3TM, or TTM Assembly291
HVPS Controller Communication Error292
Communication Error between Printer and RIP Card Assembly293
Communication Error with Finisher Controller Card Assembly293
1TM, 3TM or TTM Left Door Assembly Open294
Duplex Left Door Assembly Open295
Media Size Mismatch in Width296
No Media in the Selected Media Tray297
Paper Is Installed (Short Edge) in the Media Paper Tray299
PC Cartridge End of Life299
Printer Front Door Assembly Open300
Printer Left Door Open301
Transfer Belt Access Door Open302
Printer Left Lower Door Assembly Open302
Maintenance Required303
ADF Maintenance Required304
Standard Media bin Full304
Scanner Unit Assembly Not Detected304
ADF Left Cover Assembly Is Open305
Toner Cartridge Error306
Toner Cartridge Set Error306
Waste Toner Cartridge Full307
Waste Toner Cartridge Not Detected307
Waste Toner Cartridge Nearly Full308
Color> PC Cartridge Invalid309
Color> PC Cartridge Not Detected309
CMY PC Cartridges Nearly Exhausted310
CMY PC Cartridges Exhausted310
K PC Cartridge Nearly Exhausted310
K PC Cartridge Exhausted311
- Color> Toner Cartridge Nearly Empty311
- Color> Toner Cartridge Empty312
- Color> Toner Cartridge Detection Error313
- Incorrect Black Toner Cartridge Error314
- Incorrect <Color> Toner Cartridge Error314
- Tray 1 Media Size Mismatch Error314
- Tray 2 Media Size Mismatch Error315
- Tray 3 Media Size Mismatch Error316
- Tray 4 Media Size Mismatch Error316
- Tray 1 Media Type Mismatch Error317
- Tray 2 Media Type Mismatch Error318
- Tray 3 Media Type Mismatch Error319
- Tray 4 Media Type Mismatch Error319
- Image Quality Trouble321
Diagnostic Aids357
- Accessing Service Menus357
- Diagnostics Menus358
- Input Tray Tests366
  - Feed Tests366
  - Sensor Test (Input Tray)367
- Output bin Tests367
- Finisher Tests368
- Base Sensor Test371
- Device Tests372
  - Quick Disk Test372
  - Disk Test/Clean373
- Printer Setup374
- Event Log376
Scanner Tests379
- ASIC Test379
- Feed Test379
- Scanner Manual Registration380
- Sensor Test (Scanner Tests)380
- Trans Belt HP Fail Clear381
- Dev Unit Reset381
- Fuser Temp Fail Clear381
- Atc Sensor Failure Clear381
- Engine Adjust382
- Color Registration (Regcon)385
- Booklet Fold Adjust385
- Finisher Config385
- Testing the Manual Scanner Registration386
- Analyzing the Manual Scanner Registration Copies387
- Manually Adjusting the Scanner's Registration387
- Scanner Manual Registration Factory Defaults389
- Exiting Diagnostics Menu390
Configuration Menu391
- Entering Configuration Menu391
- Available Menus391
- Maintenance Counter Value393
- Reset Maintenance Counter393
- USB Scan to Local394
- Black Only Mode394
- Print Quality Pages (Configuration Menu)394
- Size Sensing395
Repair Information409
- Handling ESD-Sensitive Parts409
- Removal Procedures410
2Nd Transfer Roll Retract Cam Assembly Removal439
Sensor (2Nd Transfer Roll Retract HP) Removal442
2Nd Transfer Roll Retract Motor Assembly Removal443
2Nd Transfer Roll Assembly Removal443
Registration / Transport Roll Assembly Removal444
Registration Clutch Removal445
Sensor (Registration) Removal445
Sensor (Transparency Detect) Removal446
Waste Toner Cartridge Cover Removal447
Waste Toner Cartridge Sensor Assembly Removal447
Sensor (Waste Toner Cartridge Full) Removal448
Switch (Waste Toner Cartridge Interlock) Removal450
Inner Cover Removal451
Waste Toner Agitator Motor Assembly Removal452
PC Cartridge Unit Removal452
Image Density Sensor Assembly Removal453
CMY Toner Add Assembly Removal455
K Toner Add Assembly Removal456
Developer Interlock Plate Assembly Removal457
Developer Unit Assembly Removal460
Developer Carrier Removal and Replacement464
Photoconductor (PC) Unit Assembly Removal468
Transfer Belt Lift Latch Assembly Removal470
Transfer Belt Steering Motor Removal472
CMY Erase Lamp Assembly Removal472
K Erase Lamp Assembly Removal473
Printhead Shutter Motor Assembly475
Switch (Printer Front Door Interlock) Removal476
Sensor (Printer Left Lower Door Interlock) Removal477
RIP Card Cooling Fan Cover Assembly Removal477
Controller Box Assembly Removal478
Switch (Main Power) Removal479
Bridge Card Assembly Removal480
RIP Card Access Cover Removal481
RIP Card Assembly Removal481
Fax Interface Card (Modem) Assembly Removal482
Hard Drive Removal482
Interconnect Card Assembly Removal483
Upper Printer Engine Card Bracket Assembly Removal484
Upper Printer Engine Card Assembly Removal485
Lower Printer Engine Card Bracket Assembly Removal487
Lower Printer Engine Card Assembly Removal488
Transfer Belt Drive Motor Cooling Fan Removal489
Transfer Belt Drive Motor Assembly Removal490
Switch (Transfer Belt Access Door Interlock) Removal490
Laser Diode Power Card Assembly Removal491
LVPS Card Bracket Assembly Removal493
LVPS Card Assembly Removal494
LVPS Card Bracket Assembly Removal494
LVPS Card Assembly Removal495
LVPS Cooling Fan Removal496
Rear Lower Cooling Fan Assembly Removal497
CMY Developer Drive Motor Assembly Removal498
CMYK PC Cartridge Drive Motor Assembly Removal499
Fuser Cooling Fan Removal500
Main Power Switch Actuator Removal500
CMYK Toner Add Motor Assembly Removal501
CMYK Transfer HVPS Card Assembly Removal502
Printhead Assembly Removal503
- Transfer Belt Waste Toner Auger Assembly Removal504
- K Developer / Transport Drive Motor Assembly Removal504
- K Developer Clutch Removal507
- AC Drive Card Bracket Assembly Removal508
- Noise Filter Assembly Removal509
- Rear Upper Cooling Fan Bracket Assembly Removal510
- Rear Upper Cooling Fan Removal510
- Developer / Transfer Roll HVPS Card Assembly Removal511
- Charge Roll HVPS Card Assembly Removal512
- MPF / Transport Drive Motor Assembly Removal513
- Feed Roll Removal514
- Pick Roll Removal515
- Separation Roll Removal516
- Sensor (RFID Toner Cartridge) Removal517
- Fuser Exit Roll Assembly Removal518
- MPF Media out Actuator Removal518
- Sensor (MPF Media Out) Removal519
- MPF Pick Roll Assembly Removal519
- Media Feed Lift Motor Removal521
- Switch (Media Size) Removal522
- Scanner Removals523
  - Scanner Unit Assembly Removal523
  - Platen Cushion Removal524
  - Large Platen Glass Removal525
  - Scanner Left Cover Removal525
  - Scanner Right Cover Removal526
  - Scanner Top Rear Cover Removal526
  - Operator Panel Assembly Removal527
  - CCD Card/Lens Assembly Removal527
  - Scanner Drive Motor Assembly Removal529
  - Exposure Lamp Removal530
  - Exposure Lamp PS Card Assembly Removal530
  - Scanner Controller Card Assembly Removal531
  - Sensor (Scanner HP) Removal532
  - ADF Angle Actuator Assembly Removal533
  - Sensor (ADF Angle) Removal533
  - Scanner PS Card Assembly Removal534
  - Scanner PS Cooling Fan Removal535
- ADF Removals537
  - ADF Unit Assembly Removal537
  - Platen Cushion Removal538
  - ADF Rear Cover Removal539
  - ADF Front Cover Assembly Removal539
  - ADF Left Cover Assembly Removal540
  - ADF Left Cover Handle Removal541
  - Left Cover Pinch Roll Assembly Removal542
  - ADF Feed Drive Motor Assembly Removal542
  - Media Scan Guide Removal543
  - ADF Media Feed Assembly Removal543
  - Document Tray Assembly Removal545
  - ADF Controller Card Assembly Removal546
  - Inverter Solenoid Assembly Removal547
  - Document Set LED Removal548
  - Sheet through Actuator Removal548
  - Sensor (Pick Roll Position HP) Removal549
  - ADF Feed/Pick Roll Assembly Removal550
  - Document Set Actuator Removal551
  - ADF Left Cover Media Guide Removal552
  - Pick Roll Position Motor Assembly Removal552
- Switch (ADF Left Cover Interlock) Removal553
- Sensor (ADF Width APS 1) Removal554
- Sensor (ADF Width APS 2) Removal555
- Sensor (ADF Width APS 3) Removal556
- Sensor (ADF Registration) Removal557
- Sensor (ADF Pre-Registration) Removal558
- Sensor (ADF Inverter) Removal559
- Actuator/Media Guide Assembly Removal560
- Inverter Gate Removal560
- ADF Registration Roll Assembly Removal560
- ADF Feed-Out Roll Assembly Removal561
- ADF Separation Roll Guide Assembly563
- ADF Exit Roll Assembly Removal564
- ADF Transport Roll Assembly Removal565
- Sensor (Document Set) Removal565
- Sensor (Sheet Through) Removal566
- ADF Registration Motor Removal567
- Sensor (Document Tray Width 1) Removal568
- Sensor (Document Tray Width 2) Removal569
- Sensor (Document Tray Width 3) Removal570
- Sensor (Document Tray Length 1) Removal571
- Sensor (Document Tray Length 2) Removal572
2000-Sheet Dual Input (TTM) Removals573
- 2000-Sheet Dual Input (TTM)-Top Cover Removal573
- 2000-Sheet Dual Input (TTM)-Foot Cover Removal573
- 2000-Sheet Dual Input (TTM)-Right Cover Removal574
- 2000-Sheet Dual Input (TTM)- Tray Module Left Cover Removal575
- 2000-Sheet Dual Input (TTM)-Rear Cover Removal575
- 2000-Sheet Dual Input (TTM)-Caster Removal575
- 2000-Sheet Dual Input (TTM)-Tray Support Roll Removal576
- 2000-Sheet Dual Input (TTM)-TTM Media Tray 4 Assembly Removal578
- 2000-Sheet Dual Input (TTM)-TTM Media Tray 3 Assembly Removal579
- 2000-Sheet Dual Input (TTM)-Tray 3 Front Cover Removal579
- 2000-Sheet Dual Input (TTM)-Tray 3 Rear Cable Assembly Removal580
- 2000-Sheet Dual Input (TTM)-Tray 3 Front Cable Assembly Removal582
- 2000-Sheet Dual Input (TTM)-TTM Media Tray 4 Front Cover Removal583
- 2000-Sheet Dual Input (TTM)-TTM Tray 4 Media Transport Assembly Removal583
- 2000-Sheet Dual Input (TTM)-Tray 4 Rear Cables Removal583
- 2000-Sheet Dual Input (TTM)-Tray 4 Front Cables Removal586
- 2000-Sheet Dual Input (TTM)-Media Feed Unit Assembly Removal (Tray 4)587
- 2000-Sheet Dual Input (TTM)-Sensor (Tray 4 Feed-Out) Removal589
- 2000-Sheet Dual Input (TTM) Switch (Media Size) Removal590
- 2000-Sheet Dual Input (TTM)-Switch (TTM Media Size) Removal590
- 2000-Sheet Dual Input (TTM)-Media Feed Unit Assembly 2 Removal591
- 2000-Sheet Dual Input (TTM)-Media Feed Unit Assembly Removal (Tray 3)591
- 2000-Sheet Dual Input (TTM)-Sensor (Tray 3 Feed-Out) Removal593
- 2000-Sheet Dual Input (TTM)-Sensor (Tray 2 Feed-Out) Removal594
- 2000-Sheet Dual Input (TTM)-Media Feed Lift Motor Removal594
- 2000-Sheet Dual Input (TTM)-One-Way Clutch / Gear Assembly Removal596
- 2000-Sheet Dual Input (TTM)-Media out Actuator Removal598
- 2000-Sheet Dual Input (TTM)-Sensor (Media Level) Removal599
- 2000-Sheet Dual Input (TTM)-Sensor (Media Out) Removal600
- 2000-Sheet Dual Input (TTM)-Feed Roll Removal601
- 2000-Sheet Dual Input (TTM)-Feed Roll One-Way Clutch Removal602
- 2000-Sheet Dual Input (TTM)-One-Way 22 Tooth Removal603
- 2000-Sheet Dual Input (TTM)-Separation Roll One-Way Friction Clutch Removal604
- 2000-Sheet Dual Input (TTM)-Separation Roll Removal605
- 2000-Sheet Dual Input (TTM)-Pick Roll Removal607
- 2000-Sheet Dual Input (TTM)-Left Door Assembly Removal608
  - 2000-Sheet Dual Input (TTM)-Switch (TTM Left Door Interlock) Removal609
  - 2000-Sheet Dual Input (TTM)-Tray 3 Lift Gear Assembly Removal610
  - 2000-Sheet Dual Input (TTM)-Tray 4 Lift Gear Assembly Removal610
  - 2000-Sheet Dual Input (TTM)-Tray Lift Coupling Assembly Removal611
  - 2000-Sheet Dual Input (TTM)-Tray Module Drive Motor Assembly Removal611
  - 2000-Sheet Dual Input (TTM)-TTM Tray 4 Transport Motor Removal613
  - 2000-Sheet Dual Input (TTM)-TTM Controller Card Assembly Removal613
- 500-Sheet Drawer (3TM) Removals614
  - 500-Sheet Drawer (3TM)-Top Cover Removal614
  - 500-Sheet Drawer (3TM)-Foot Cover Removal615
  - 500-Sheet Drawer (3TM)-Right Cover Removal615
  - 500-Sheet Drawer (3TM)-Tray Module Left Cover Removal616
  - 500-Sheet Drawer (3TM)-Rear Cover Removal616
  - 500-Sheet Drawer (3TM)-Caster Removal617
  - 500-Sheet 3TM)-Media Feed Unit Assembly Removal (Tray 4)617
  - 500-Sheet Drawer (3TM)-Sensor (Tray 4 Feed-Out) Removal618
  - 500-Sheet Drawer (3TM)-Sensor (Tray 2 Feed-Out) Removal619
  - 500-Sheet Drawer (3TM)-Switch (Media Size) Removal620
  - 500-Sheet Drawer (3TM)-Media Feed Unit Assembly Removal (Tray 3)621
  - 500-Sheet Drawer (3TM)-Media Feed Unit Assembly Removal (Tray 2)623
  - 500-Sheet Drawer (3TM)-Sensor (Tray 3 Feed-Out) Removal624
  - 500-Sheet Drawer (3TM)-Media Feed Lift Motor Removal625
  - 500-Sheet Drawer (3TM)-One-Way Clutch / Gear Assembly Removal626
  - 500-Sheet Drawer (3TM)-Media out Actuator Removal627
  - 500-Sheet Drawer (3TM)-Sensor (Media Level) Removal628
  - 500-Sheet Drawer (3TM)-Sensor (Media Out) Removal629
  - 500-Sheet Drawer (3TM)-Feed Roll Removal630
  - 500-Sheet Drawer (3TM)-Feed Roll One-Way Clutch Removal631
  - 500-Sheet Drawer (3TM)-One-Way 22 Tooth Removal632
  - 500-Sheet Drawer (3TM)-Separation Roll One-Way Friction Clutch Removal633
  - 500-Sheet Drawer (3TM)-Separation Roll Removal634
  - 500-Sheet Drawer (3TM)-Pick Roll Removal636
  - 500-Sheet Drawer (3TM)-3TM Left Door Assembly Removal637
  - 500-Sheet Drawer (3TM)-Switch (Tray Module Left Door Interlock) Removal637
  - 500-Sheet Drawer (3TM)-Tray Module Drive Motor Assembly Removal638
  - 500-Sheet Drawer (3TM)-3TM Controller Card Assembly Removal639
- 500-Sheet Drawer (1TM) Removals640
  - 500-Sheet Drawer (1TM)-Top Cover Removal640
  - 500-Sheet Drawer (1TM)-Front Door Removal641
  - 500-Sheet Drawer (1TM)-Foot Cover Removal641
  - 500-Sheet Drawer (1TM)-Right Cover Removal642
  - 500-Sheet Drawer (1TM)-Tray Module Left Cover Removal643
  - 500-Sheet Drawer (1TM)-Rear Cover Removal643
  - 500-Sheet Drawer (1TM)-Caster Removal644
  - 500-Sheet Drawer (1TM)-Media Feed Unit Assembly Removal (Tray 2)644
  - 500-Sheet Drawer (1TM)-Sensor (Tray 2 Feed-Out) Removal645
  - 500-Sheet Drawer (1TM)-Switch (Media Size) Removal646
  - 500-Sheet Drawer (1TM)-Media Feed Lift Motor Removal647
  - 500-Sheet Drawer (1TM)-One-Way Clutch / Gear Assembly Removal647
  - 500-Sheet Drawer (1TM)-Media out Actuator Removal649
  - 500-Sheet Drawer (1TM)-Sensor (Media Level) Removal650
  - 500-Sheet Drawer (1TM)-Sensor (Media Out) Removal651
  - 500-Sheet Drawer (1TM)-Feed Roll Removal652
  - 500-Sheet Drawer (1TM)-Feed Roll One-Way Clutch Removal653
  - 500-Sheet Drawer (1TM)-One-Way 22 Tooth Removal654
  - 500-Sheet Drawer (1TM)-Separation Roll One-Way Friction Clutch Removal655
  - 500-Sheet Drawer (1TM)-Separation Roll Removal656
  - 500-Sheet Drawer (1TM)-Pick Roll Removal657
  - 500-Sheet Drawer (1TM)-Tray Module Left Door Assembly Removal658
  - 500-Sheet Drawer (1TM)-Switch (Tray Module Left Door Interlock) Removal659
  - 500-Sheet Drawer (1TM)-Tray Module Drive Motor Assembly Removal660
  - 500-Sheet Drawer (1TM)-1TM Controller Card Assembly Removal660
- Setup and Adjustments661
  - Sensor (ATC) Setup661
  - Color Registration (Regcon)665
  - Transfer Belt Lift Handle Assembly Removal679
Connector Locations683
- Locations683
Preventive Maintenance699
- Safety Inspection Guide699
- Scheduled Maintenance701
Parts Catalog703
- How to Use this Parts Catalog703
- Assembly 1: Covers 1704
- Assembly 2: Covers 2705
- Assembly 3: Covers 3706
- Assembly 4: PC Cartridge and Developer Drive707
- Assembly 5: ID Sensor and Transfer Belt Steering708
- Assembly 6: Media Tray709
- Assembly 7: Printer Left Lower Door and Media Feed Unit710
- Assembly 8: Media Feed Unit711
- Assembly 9: MPF Feed Unit Assembly 1713
- Assembly 10: MPF Feed Unit Assembly 2714
- Assembly 11: MPF Feed Unit Assembly 3715
- Assembly 12: Registration / Transport Roll Assembly716
- Assembly 13: Printer Left Door and Duplex717
- Assembly 14: Printer Left Door Assembly 1718
- Assembly 15: Printer Left Door Assembly 2719
- Assembly 16: Duplex Media Inverter Assembly720
- Assembly 17: Duplex 2721
- Assembly 18: Standard Media Exit Shift722
- Assembly 19: Printhead Assembly723
- Assembly 20: Xerographic and Waste Toner724
- Assembly 21: Erase Lamps and Developer Interlock Plate725
- Assembly 22: Transfer Belt Lift 1726
- Assembly 23: Transfer Belt727
- Assembly 24: Transfer Belt Lift 2728
- Assembly 25: Toner Dispense729
- Assembly 26: Developer Unit Assemblies730
- Assembly 27: Fuser Assembly731
- Assembly 28: Cooling Fans732
- Assembly 29: Electrical 1733
- Assembly 30: Electrical 2735
- Assembly 31: Electrical 3736
- Assembly 32: Electrical 4738
- Assembly 33: ADF Assembly740
- Assembly 34: ADF Covers and Components741
- Assembly 35: ADF Base742
- Assembly 36: ADF Feeder744
- Assembly 37: ADF Left Cover Components746
- Assembly 38: ADF Media Guide748
- Assembly 39: ADF Feeder Roll750
- Assembly 40: ADF Motor Unit752
- Assembly 41: ADF Document Tray753
- Assembly 42: Scanner Covers754
- Assembly 43: CCD Lens Assembly755
- Assembly 44: Control Panel and Platen Glass757
- Assembly 45: Scanner Electrical759
- Assembly 46: Scanner Optics760
- Assembly 47: Carriage Cable and Motor762
- Assembly 48: MFP Rack763
- Assembly 49: 1TM Covers764
- Assembly 50: 1TM Feed Unit Assembly765
- Assembly 51: 1TM Media Feed Unit767
- Assembly 52: 1TM Left Door769
- Assembly 53: 1TM Drive and Electrical770
- Assembly 54: 3TM Covers772
- Assembly 55: 3TM Feed Unit Assembly774
- Assembly 56: 3TM Media Feed Unit776
- Assembly 57: 3TM Left Door778
- Assembly 58: 3TM Drive and Electrical780
- Assembly 59: TTM Covers782
- Assembly 60: TTM Media Trays783
- Assembly 61: TTM Media Tray 3784
- Assembly 62: TTM Media Tray 4787
- Assembly 63: TTM Media Tray 4 Transport788
- Assembly 64: TTM Media Transport789
- Assembly 65: TTM Left Door790
- Assembly 66: TTM Tray Lift Drive791
- Assembly 67: TTM Drive and Electrical792
- Assembly 68: Miscellaneous794
Index803
Part Number Index805

Lexmark X940E - TTM Theory

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