Lexmark T650 - Page 513

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Repair Information 4-191

4062-XXX

3. Release the tabs (A) securing the sensor to the unit.

Note: The tabs may be difficult to access. The use of a spring hook or flat-blade screwdriver may be

necessary to release the tabs.

Main Page

Default Chapter3
- Table of Contents3
Table of Contents15
Notices and Safety Information15
- Laser Notice15
- Lithium Warning21
- Safety Information21
Preface24
- Conventions24
General Information25
- Maintenance Approach25
- Options26
- Tools Required32
- Acronyms33
Diagnostic Information35
- Start35
- Confirm the Installation Status36
- Power-On Reset Sequence36
  - Entering Diagnostics Mode36
- User Attendance Messages37
- Error Code Table 148
- Service Checks70
Image Quality Trouble191
- NVRAM Mismatch Failure (950.00 through 950.29) Service Check191
  - Image Quality Trouble191
  - Printer Related Troubleshooting191
- Image Quality197
  - Network Service Check211
Diagnostic Aids213
- Control Panel213
- Understanding the Printer Control Panel (Models T650, T652, and T654)213
- Accessing Service Menus (Models T650, T652, and T654)214
  - Index214
- Diagnostics Mode (Models T650, T652, and T654)215
Print Tests219
- Registration (Printer)219
- Available Tests219
- Hardware Tests221
  - USB HS Test Mode221
    - RFID Option Test222
    - Duplex Tests224
Duplex Tests224
- Quick Test (Duplex)224
- Top Margin (Duplex)225
- Sensor Test (Duplex)225
- Motor Test (Duplex)226
- Duplex Feed 1226
- Duplex Feed 2226
- Input Tray Tests226
- Input Tray Tests227
- Output bin Tests228
Ep Setup233
- Fuser Temperature (Fuser Temp)233
- Reports235
- Event Log235
- Display Log235
- Print Log235
- Clear Log236
- EXIT DIAGNOSTICS (Models T650, T652, and T654)236
- Configuration Menu (CONFIG MENU) (Models T650, T652, and T654)237
500 D240
- Factory Defaults240
- Env Prompts240
- Clear Custom Status241
- Wiper Messages241
- Best Speed241
  - Exit Config Menu (Models T650, T652, and T654)241
Understanding the Printer Control Panel (Model T656)241
Accessing Service Menus (Model T656)242
- Exit Config Menu (Models T650, T652, and T654)243
- Entering Diagnostics Menu (Model T656)243
B248
- Panel Test248
- Hardware Tests248
- Button Test248
- DRAM Test249
- Left Margin (Duplex)251
  - Sensor Test (Duplex)251
  - Motor Test (Duplex)251
- Duplex Feed 1252
- Duplex Feed 2252
- Device Tests255
- Quick Disk Test255
- Disk Test/Clean255
- Printer Setup256
- Configuration Menu (CONFIG MENU) (Model T656)261
100 C270
- LES Applications270
- Key Repeat Initial Delay270
- Key Repeat Rate270
- Wiper Message270
- Clear Custom Status270
- USB Speed271
- Exit Configuration Menu (Model T656)271
- Printer Overview272
  - Basic Model272
- Printer Theory273
Polygon Printhead Assembly281
Oscillating Printhead Assembly283
- Fuser284
Fuser Components284
- Heat Roll285
- Pressure Roll285
- Heater Lamp285
- Thermal Cutoff285
- Thermistor285
- Sensor (Narrow Media)285
Fuser Unit Assembly (Type 1 and Type 2)285
- Type 1 Fuser Unit Assembly285
Exit286
- Type 2 Fuser Unit Assembly286
- Sensor (Standard bin Full)286
Drive287
- Main Drive Motor Assembly287
- Redrive Motor Assembly287
Electrical Components and Controller288
- Switch (Printer Front Door Interlock)288
- Main Cooling Fan288
- Print Cartridge Cooling Fan288
- Duplex Cooling Fan288
- LVPS Card Assembly288
- HVPS Card Assembly288
- System Card Assembly289
Printhead Control289
- Rotation of Printhead Motor289
- Determination of Printhead Ready289
- Printhead Reference Value289
Fuser Control289
- Fuser Control Method289
- Fuser Lamp On/Off Control289
- Fuser Warm-Up290
Xerographic and Print Cartridge Components290
- Charge291
- Exposure291
- Development292
- Transfer293
- Cleaning294
- Auto Density Sensing295
High Capacity Input Tray (HCIT) Tray Assembly296
Sheet/550-Sheet Tray Assembly297
- Media Size Sensing297
- Media Level Sensing298
- Media Transport Path301
Model T650 Paper Path, Rolls, and Sensors301
Models T652 and T654 Paper Path, Rolls, and Sensors302
- Functions of Main Components302
- Media Tray Assembly302
- Rear Media Guide302
- Side Guide302
  - Wear Strips303
  - Media Tray Assembly303
Duplex305
- Model T650 Duplex Paper Path305
- Models T652 and T654 Duplex Paper Path306
- Understanding Jam Numbers and Locations308
- Security Reset Jumper320
Repair Information323
- Handling ESD-Sensitive Parts323
- Adjustments324
- Polygon and Oscillating Printhead Mechanical Registration Adjustment324
A324
Adjustments324
- Oscillating Printhead Assembly Electronic Adjustment325
- Removals329
Duplex Guide Assembly, Front Removal (T652, T654)343
Fuser Access Door Assembly Removal (T650, T652, T654)344
Fuser Drive Release Linkage Removal (T650, T652, T654)345
Fuser Unit Assembly Removal (T650, T652, T654)345
Fuser Wiper Cover Assembly Removal (T650, T652, T654)346
HVPS Card Assembly Removal (T650, T652, T654)346
Inner Deflector Removal (T650, T652, T654)347
Laser Cover Removal (T650, T652, T654)349
LCD Screen Bezel Removal (T650, T652, T654)350
LVPS Card Assembly Removal (T650)351
LVPS Card Assembly Removal (T652, T654)353
Main Cooling Fan Removal (T650, T652, T654)354
Main Drive Motor Assembly Removal (T650, T652, T654)356
Media out Actuator Removal (T650, T652, T654)357
Media Support Removal (T650, T652, T654)358
Media Turn Guide Removal (T650, T652, T654)358
MPF Cam Gear Removal (T650, T652, T654)359
MPF Lift Plate Assembly Removal (T650, T652, T654)359
MPF Media out Actuator Removal (T650, T652, T654)360
MPF Pick Roll Assembly Removal (T650, T652, T654)360
MPF Pick Solenoid Assembly Removal (T650, T652, T654)361
MPF Tray Door Assembly Removal (T650, T652, T654)363
Operator Panel Latch Assembly Removal (T650, T652, T654)365
Operator Panel Door Assembly Removal (T650, T652, T654)366
Operator Panel Hinge Assembly, Left Removal (T650, T652, T654)367
Operator Panel Hinge Assembly, Right Removal (T650, T652, T654)369
Operator Panel Door Assembly Removal (Models X651, X652, X654, and X656)371
Operator Panel Cover Latch Assembly Removal (Models X651, X652, X654, and X656)374
Option Drive Shaft Removal (T650, T652, T654)374
Output Cover Assembly Removal (T650, T652, T654)376
Pick Arm Assembly Removal (T650, T652, T654)376
Pick Roll Assembly Removal (T650, T652, T654)379
Print Cartridge Cooling Fan Removal (T650, T652, T654)379
Print Cartridge Clamp Assembly Removal (T650, T652, T654)380
Print Cartridge ID Connector Assembly Removal (T650, T652, T654)381
Printhead Assembly Removal (T650)382
Printhead Assembly Removal (T652, T654)383
Redrive Assembly Removal (T650, T652, T654)384
Redrive Motor Assembly Removal (T652, T654)385
Side Cover, Left Removal (T650)387
Side Cover, Left Removal (T652 and T654)388
Side Cover, Right Removal (T650)389
Side Cover, Right Removal (T652, T654)390
Sensor (Duplex Input) Removal (T652, T654)392
Sensor (Media Out) Removal (T650, T652, T654)392
Sensor (Input) Removal (T650, T652, T654)393
Sensor Shield Assembly Removal (T650, T652, T654)394
Sensor (Toner Density) Removal (T650, T652, T654)395
Standard bin Actuator Assembly Removal (T650, T652, T654)395
Switch (Media Size) Assembly Removal (T650, T652, T654)396
System Card Assembly Removal (T650, T652, T654, T656)398
- Transfer Roll Assembly Removal (T650, T652, T654)400
Transfer Roll Assembly Removal (T650, T652, T654)401
Transfer Roll Bracket Assembly, Left Removal (T650, T652, T654)401
Transfer Roll Bracket Assembly, Right Removal (T650, T652, T654)402
- Tray Roller Catch Assembly Removal (T650, T652, T654)403
Transfer Deflector Removal (T650, T652, T654)402
- Option Removals405
- Output Expander Media bin Latch (Left and Right) Removal486
- SFP Stapler Assembly Sensor (Media in Stapler) Removal512
- Sensor (Pass Through) with Cable Removal518
Connector Locations and Connections521
- Lubrication Specifications523
- Individual Maintenance Part Expected Life523
Preventive Maintenance523
- Safety Inspection Guide523
- Scheduled Maintenance524
  - Maintenance Kit524
  - Parts Catalog525
- How to Use this Parts Catalog525
- Assembly 1: Covers526
- Assembly 2: T650, T652, and T654 Operator Panel528
- Assembly 3: T656Dne Operator Panel, MPF and Smart Card530
- Assembly 4: Drive Motor Assemblies and Duplex532
- Assembly 5: Media Path and Ducts534
- Assembly 6: Printhead, Charge, and Transfer536
- Assembly 7: Pick Arm Assembly, Trays, and MPF538
- Assembly 8: LVPS, Fuser and Electrical Cables 1540
- Assembly 9: HVPS, System Card, and Electrical Cables 2542
- Assembly 10: 250 Sheet Option Tray Assembly544
- Assembly 11: 550 Sheet Option Tray Assembly546
- Assembly 12: HCIT Sheet Option Tray Assembly548
- Assembly 13: SFP Stapler Assembly #1550
- Assembly 14: SFP Stapler Assembly #2552
- Assembly 15: SFP Stapler Assembly #3554
- Assembly 16: SFP Stapler Assembly #4556
- Assembly 17: 5-Bin Mailbox #1558
- Assembly 18: 5-Bin Mailbox #2Io560
- Assembly 19: High Capacity Stacker562
- Assembly 20: Output Expander564
- Assembly 21: Envelope Feeder and External Duplex566
- Assembly 22: RFID UHF Option Assembly568
- Assembly 23: Miscellaneous569
- Assembly 24: Power Cords571
- Assembly 25: Universal Trays and Accessories572
Part Number Index577

Lexmark T650 - Page 513

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