Lexmark 20G0482 - T 644tn B/W Laser Printer Manuals

Manuals and User Guides for Lexmark 20G0482 - T 644tn B/W Laser Printer. We have 1 Lexmark 20G0482 - T 644tn B/W Laser Printer manual available for free PDF download: Service Manual

Lexmark 20G0482 - T 644tn B/W Laser Printer Service Manual (422 pages)

Service Manual

Brand: Lexmark | Category: Printer | Size: 11 MB

Table of Contents
3
Laser Notices

11
Safety Information

17
Preface

20
- Definitions
  
  20
General Information

21
- Maintenance Approach
  
  21
- Options
  
  21
  - Configured Models
    22
- Specifications
  
  23
  - Resolution
    23
  - Data Streams
    23
  - Print Speed and Performance Print Speed
    23
    
    Performance
    23
    
    Time to First Print
    23
  - Memory Configuration
    24
  - Operating Clearances
    24
  - Dimensions
    25
  - Power Requirements
    26
  - Electrical Specifications
    26
  - Environment
    27
  - Acoustics
    27
- Media Specifications
  
  28
  - Paper and Specialty Media Guidelines
    28
  - Supported Print Media
    28
  - Index
    31
  - Selecting Print Media
    35
    
    Paper
    35
    
    Paper Characteristics
    35
    
    Weight
    35
    
    Unacceptable Paper
    35
    
    Transparencies
    36
    
    Selecting Transparencies
    36
    
    Envelopes
    36
    
    Labels
    37
    
    Card Stock
    38
  - Storing Print Media
    38
  - Avoiding Jams
    39
  - Print Area
    39
- Tools Required
  
  39
- Acronyms
  
  40
Diagnostic Information

41
- Start
  
  41
- Symptom Tables
  41
- Service Errors (9Xx.XX's)
  41
- User Status and Attendance Messages
  41
- Additional Information
  41
- Understanding the Printer Operator Panel
  42
- Understanding the Menus
  43
Power-On Self Test (POST) Sequence

44
Symptom Tables

45
- Base Printer Symptoms
  45
- High-Capacity Feeder (2000-Sheet) Symptoms
  45
- Paper Tray Symptoms
  46
- Duplex Option Symptoms
  46
- Envelope Feeder Symptoms
  46
- Output Expander
  46
- Staplesmart Finisher
  47
Messages and Error Codes

48
Service Checks

112
- 5-Bin Mailbox Service Check
  112
- 900.XX Error Code Service Check
  115
- 927.XX Fan Service Check
  116
  - Main Fan
    116
  - Cartridge Fan Service Check
    116
- 950.00 through 950.29 EPROM Mismatch Failure
  117
- 950.30 through 950.60 EPROM Mismatch Failure
  118
- Charge Roll Service Check
  119
- Cover Closed Switch/Cable Service Check
  120
- Dead Machine Service Check
  120
- Duplex Option Service Check
  122
- Envelope Feeder Service Check
  124
- Fuser Service Checks
  127
  - 920.XX-Cold Fuser Service Check
    127
  - 922.XX-Cold Fuser Check
    129
  - 923.XX-Hot Fuser Service Check
    130
  - 925.XX-Hot Fuser Service Check
    131
- Fuser Exit Sensor Service Check
  132
- Fuser Narrow Media Sensor Service Check
  133
- Fuser Solenoid Service Check
  134
- High-Capacity Feeder Input Tray Service Check
  135
- High-Capacity Output Stacker Service Check
  140
- Input Sensor Service Check
  142
- Input Tray(S) Service Check
  142
- Interconnect Card Service Check
  144
- Main Drive Service Check
  145
- Operator Panel Service Check
  146
  - One or more Operator Panel Buttons Fail
    146
  - No Buttons Work
    146
  - Operator Panel Display
    147
- Options Service Check
  148
  - Flash Memory Option(S)
    148
  - DRAM Memory Option(S)
    148
  - Hard Disk Option
    148
- Output bin Sensor Standard Tray Service Check
  149
- Output Expander Service Check
  150
- Paper Feed Service Check
  152
- Paper Size Sensing Service Check
  153
- Parallel Port Service Check
  156
- Print Quality Service Check
  156
  - Printhead Service Check
    162
  - Signature Button Assembly Service Check
    162
  - Staplesmart Finisher Service Check
    163
  - System Board Service Check
    166
  - Toner Sensor Service Check
    167
  - Transfer Roll Service Check
    168
Diagnostic Aids

169
- Accessing Service Menus
  
  169
- Diagnostics Mode
  
  170
  - Entering Diagnostics Mode
    170
  - Available Tests
    170
  - Exiting Diagnostics Mode
    172
  - Registration
    172
    
    Quick Test
    173
  - Print Tests
    174
    
    Input Source Tests
    174
    
    Print Quality Pages (Prt Quality
    174
  - Hardware Tests
    175
    
    Panel Test
    175
    
    Button Test
    175
    
    DRAM Test
    175
    
    CACHE Test
    176
    
    Parallel Wrap Tests
    176
    
    Serial Wrap Tests
    177
  - Duplex Tests
    177
    
    Quick Test (Duplex)
    177
    
    Top Margin (Duplex)
    178
    
    Sensor Test (Duplex)
    178
    
    Motor Test (Duplex)
    179
    
    Duplex Feed 1
    180
    
    Duplex Feed 2
    180
  - Input Tray Tests
    181
    
    Feed Tests (Input Tray)
    181
    
    Sensor Test (Input Tray)
    181
  - Output bin Tests
    182
    
    Feed Tests (Output Bins)
    182
    
    Feed to All Bins
    182
    
    Sensor Test (Standard Output Bin)
    183
    
    Sensor Test (Output Expander)
    183
    
    Sensor Test (High Capacity Output Stacker)
    184
    
    Sensor Tests (5-Bin Mailbox)
    184
    
    Diverter Test
    184
  - Finisher Tests
    185
    
    Staple Test
    185
    
    Feed Tests (Finisher)
    185
    
    Sensor Test (Finisher)
    185
  - Base Sensor Test
    186
  - Device Tests
    186
    
    Quick Disk Test
    186
    
    Disk Test/Clean
    187
    
    Flash Test
    187
  - Printer Setup
    188
    
    Defaults
    188
    
    Page Count
    188
    
    Perm Page Count (Permanent
    188
    
    Serial Number
    188
  - Envelope Enhance
    188
  - Engine Setting 1 through 4
    188
  - Model Name
    188
  - Configuration ID
    189
  - Edge to Edge
    189
  - Parallel Strobe Adjustment (Par X Strobe Adj)
    189
  - Ep Setup
    190
    
    EP Defaults
    190
    
    Fuser Temperature (Fuser Temp)
    190
    
    Fuser
    190
    
    Warm up Time
    190
    
    Transfer
    190
    
    Print Contrast
    190
    
    Charge Roll
    190
    
    Gap Adjust
    190
  - Event Log
    191
    
    Display Log
    191
    
    Print Log
    191
    
    Clear Log
    192
  - Exit Diagnostics
    192
Configuration Menu (CONFIG MENU)

193
- Entering Configuration Menu
  193
- Available Menus
  193
- Maintenance Page Count (Maint Cnt Value)
  193
- Maintenance Page Counter Reset (Reset Maint Cnt)
  194
- Print Quality Pages (Prt Quality
  194
- Size Sensing
  195
- Panel Menus
  195
- PPDS Emulation
  195
- Download Emuls
  195
- Demo Mode
  195
- Factory Defaults
  196
- Energy Conserve
  196
- Event Log
  196
- Paper Prompts
  196
- Env Prompts
  196
- Jobs on Disk
  196
- Disk Encryption
  196
- Font Sharpening
  197
- LCD Brightness
  197
- LCD Contrast
  197
- Exit Config Menu
  197
Additional Useful Menu Locations

197
- Hex Trace
  197
- Menu Settings Page
  198
- Printing Menu Settings Page
  198
Theory

199
- Autocompensator Operation
  199
- Autoconnect System, Paper Tray Options, Envelope Feeder-Electrical
  200
  - Autoconnect Cabling and Connectors
    200
  - Duplex Option
    200
  - Option Microcode
    200
Print Quality Troubleshooting

201
Paper Feed Jams

205
- Access Doors and Trays
  205
- Clearing Printer Jams
  205
  - 250 Paper Jam Check MP Feeder
    206
  - 260 Paper Jam Check Env Feeder
    207
    
    23X and 24X Jams
    208
    
    200 And 201 Paper Jam Remove Cartridge
    209
    
    202 Paper Jam Open Rear Door
    211
    
    23X Paper Jam Open Duplex Rear Door
    212
    
    270 And 280 Paper Jams
    213
    
    Paper Jam Check bin X
    213
    
    28X Paper Jam Check Finisher
    214
  - Clearing Staple Jams
    216
Repair Information

219
- Handling ESD-Sensitive Parts
  
  219
- Adjustment Procedures
  
  220
  - Fuser Solenoid Adjustment
    220
  - Gap Adjustment
    220
  - Printhead Assembly Adjustment
    220
  - Paper Alignment Assembly Adjustment
    221
- Removal Procedures
  
  222
  - Covers Removals
    222
    
    Fuser Wiper Cover Assembly Removal
    222
    
    Redrive Cap Cover Removal
    223
    
    Paper Support Removal
    223
    
    Left Door Removal
    224
    
    Redrive Door
    225
    
    Right Cover Removal
    226
    
    Upper Front Cover Removal
    229
    
    Upper Front Cover Latch Removal
    231
    
    Upper Front Cover Outer Bezel Removal
    232
    
    Multipurpose Feeder/Lower Front Cover Assembly Removal
    233
    
    Left Cover Handle Holder Removal
    234
    
    Right Cover Handle Holder Removal
    234
    
    Left and Right Frame Extensions
    235
    
    Pass Thru Plate
    236
    
    Laser Cover Removal
    237
  - Bevel Gear Removal
    239
  - Cartridge Duct Removal
    241
  - Developer Drive Assembly Removal
    242
  - Developer Drive Coupler Kit Removal
    243
  - ESD Cover Removal
    243
  - Fuser Assembly Removal
    244
  - Installation Notes
    245
  - Fuser Exit Sensor Removal
    246
  - Fuser Exit Sensor Flag and Spring Removal
    248
  - Fuser Lamp Removal
    250
  - Fuser Narrow Media Sensor Removal
    252
  - Fuser Narrow Media Flag and Spring Removal
    254
  - Fuser to LVPS AC Cable Removal
    256
  - Fuser Top Cover Removal
    259
  - Fuser Transfer Plate Removal
    261
  - Gear Release Link Removal
    262
  - High Voltage Power Supply Removal
    263
  - Inner Paper Deflector Assembly Removal
    265
  - Input Sensor Removal
    266
  - Integrated Tray Autocompensator Assembly Removal
    267
  - Integrated Tray Autocompensator Pick Roll Assembly Removal
    269
  - Interconnect Card Assembly Removal
    271
  - Low Voltage Power Supply Removal
    272
  - Main Fan Removal
    274
  - Main Drive Assembly Removal
    275
  - MPF Arm Assembly Removal
    278
  - MPF Lower Paper Deflector
    279
  - MPF Pick Tire Removal
    280
  - MPF Solenoid Assembly Removal
    280
  - Operator Panel Board Removal
    284
  - Operator Panel Buttons Removal
    285
  - Outer Shield Removal
    285
  - Paper Alignment Assembly Removal
    286
  - Paper bin Full Sensor Flag Removal
    288
  - Paper Size Sensing Board Removal
    289
  - Power Takeoff Shaft and Spring Removal
    290
  - Printhead Removal
    291
  - Redrive Assembly Removal
    292
  - Signature Button Contact Assembly Removal
    293
  - System Board and Inner Shield Removal
    294
  - Toner Sensor Removal
    295
  - Transfer Roll Assembly Removal
    295
  - Upper Front Cover Hinge Assembly Removal
    296
  - Upper Paper Deflector Assembly Removal
    297
  - USB Board Assembly Removal
    298
Connector Locations and Connections

299
- Connections
  
  299
- System Board
  299
- Autoconnect
  304
- Fuser Board
  305
- High-Capacity Output Stacker Board
  306
- High Voltage Power Supply
  307
- Interconnect Card
  307
- Low Voltage Power Supply
  308
- Output Expander Control Board
  309
- Staplesmart Finisher
  310
Preventive Maintenance

313
- Safety Inspection Guide
  
  313
- Lubrication Specifications
  
  313
- Scheduled Maintenance
  
  313
  - Maintenance Kit
    313
Parts Catalog

315
- How to Use this Parts Catalog
  
  315
- Assembly 1: Covers
  
  316
- Assembly 2: Frame 1
  
  318
- Assembly 3: Frame 2
  
  321
- Assembly 4: Frame 3
  
  323
- Assembly 5: Printhead
  
  324
- Assembly 6: Paper Feed-Autocompensator
  
  326
- Assembly 7: Paper Feed-Multipurpose Feeder
  
  328
- Assembly 8: Paper Feed-Alignment
  
  330
- Assembly 9: Integrated 250-Sheet Paper Tray
  
  332
- Assembly 10: Integrated 500-Sheet Paper Tray
  
  334
- Assembly 11: Drives-Main Drive and Developer Drive
  
  336
- Assembly 12: Hot Roll Fuser
  
  338
- Assembly 13: Transfer/Charging
  
  340
- Assembly 14: Electronics-Power Supplies
  
  342
- Assembly 15: Electronics-Card Assemblies
  
  344
- Assembly 16: Electronics-Shields
  
  346
- Assembly 17: Cabling Diagrams 1
  
  348
- Assembly 18: Cabling Diagrams 2
  
  349
- Assembly 19: Cabling Diagrams 3
  
  350
- Assembly 20: Cabling Diagrams 4
  
  352
- Assembly 21: Cabling Diagrams 5
  
  354
- Assembly 22: Optional 250-Sheet Paper Drawer
  
  356
- Assembly 23: Optional 250-Sheet Paper Tray
  
  357
- Assembly 24: Optional 500-Sheet Paper Drawer
  
  358
- Assembly 25: Optional 500-Sheet Paper Tray
  
  359
- Assembly 26: Duplex Option
  
  360
- Assembly 27: Envelope Feeder
  
  361
- Assembly 28: Output Expander 1
  
  362
- Assembly 29: Output Expander 2
  
  363
- Assembly 30: High-Capacity Output Expander 1
  
  364
- Assembly 31: High-Capacity Output Expander 2
  
  365
- Assembly 32: High-Capacity Output Expander 3
  
  366
- Assembly 33: 5-Bin Mailbox 1
  
  368
- Assembly 34: 5-Bin Mailbox 2
  
  370
- Assembly 35: High-Capacity Feeder 1
  
  372
- Assembly 36: High-Capacity Feeder 2
  
  374
- Assembly 37: High-Capacity Feeder 4
  
  376
- Assembly 38: High-Capacity Feeder 5
  
  377
- Assembly 39: Kiosk-Vertical and Horizontal Paper Adapters
  
  378
- Assembly 40: Staplesmart Finisher I
  
  379
- Assembly 41: Staplesmart Finisher 2
  
  380
- Assembly 42: Staplesmart Finisher 3
  
  381
- Assembly 43: Staplesmart Finisher 4
  
  382
- Assembly 44: Options
  
  383
Appendix A-Options and Features

385
- Installing Input Options
  
  385
  - Order of Installation
    385
  - Installing a 250-Sheet or 500-Sheet Drawer
    385
  - Installing a Duplex Unit
    387
- Installing Memory or Option Cards
  
  388
- Accessing the Printer System Board
  
  389
- Removing or Installing a Memory Card
  
  391
  - Removal
    391
  - Installation
    392
- Removing or Installing a Flash Memory or Firmware Card
  
  392
  - Removal
    392
  - Installation
    393
- Installing an Option Card
  
  394
- Replacing the Shield
  
  395
- Printing and Using Features
  
  395
  - Canceling a Print Job
    395
  - Printing the Menu Settings Page
    397
  - Printing a Network Setup Page
    397
  - Printing a Font Sample List
    398
  - Printing a Directory List
    398
  - Printing Confidential and Held Jobs
    398
  - Printing and Deleting Held Jobs
    400
- Linking Trays
  
  401
  - Identifying and Linking Output Bins
    402
  - Linking Output Bins
    404
Index

405
- Part Number Index
  409
Part Number Index

413

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Lexmark 20G0482 - T 644tn B/W Laser Printer Manuals

Lexmark 20G0482 - T 644tn B/W Laser Printer Service Manual (422 pages)

Table of Contents

Laser Notices

Safety Information

Preface

Definitions

General Information

Maintenance Approach

Options

Specifications

Media Specifications

Tools Required

Acronyms

Diagnostic Information

Start

Power-On Self Test (POST) Sequence

Symptom Tables

Messages and Error Codes

Service Checks

Diagnostic Aids

Accessing Service Menus

Diagnostics Mode

Configuration Menu (CONFIG MENU)

Additional Useful Menu Locations

Theory

Print Quality Troubleshooting

Paper Feed Jams

Repair Information

Handling ESD-Sensitive Parts

Adjustment Procedures

Removal Procedures

Connector Locations and Connections

Connections

Preventive Maintenance

Safety Inspection Guide

Lubrication Specifications

Scheduled Maintenance

Parts Catalog

How to Use this Parts Catalog

Assembly 1: Covers

Assembly 2: Frame 1

Assembly 3: Frame 2

Assembly 4: Frame 3

Assembly 5: Printhead

Assembly 6: Paper Feed-Autocompensator

Assembly 7: Paper Feed-Multipurpose Feeder

Assembly 8: Paper Feed-Alignment

Assembly 9: Integrated 250-Sheet Paper Tray

Assembly 10: Integrated 500-Sheet Paper Tray

Assembly 11: Drives-Main Drive and Developer Drive

Assembly 12: Hot Roll Fuser

Assembly 13: Transfer/Charging

Assembly 14: Electronics-Power Supplies

Assembly 15: Electronics-Card Assemblies

Assembly 16: Electronics-Shields

Assembly 17: Cabling Diagrams 1

Assembly 18: Cabling Diagrams 2

Assembly 19: Cabling Diagrams 3

Assembly 20: Cabling Diagrams 4

Assembly 21: Cabling Diagrams 5

Assembly 22: Optional 250-Sheet Paper Drawer

Assembly 23: Optional 250-Sheet Paper Tray

Assembly 24: Optional 500-Sheet Paper Drawer

Assembly 25: Optional 500-Sheet Paper Tray

Assembly 26: Duplex Option

Assembly 27: Envelope Feeder

Assembly 28: Output Expander 1

Assembly 29: Output Expander 2

Assembly 30: High-Capacity Output Expander 1

Assembly 31: High-Capacity Output Expander 2

Assembly 32: High-Capacity Output Expander 3

Assembly 33: 5-Bin Mailbox 1

Assembly 34: 5-Bin Mailbox 2

Assembly 35: High-Capacity Feeder 1

Assembly 36: High-Capacity Feeder 2

Assembly 37: High-Capacity Feeder 4

Assembly 38: High-Capacity Feeder 5

Assembly 39: Kiosk-Vertical and Horizontal Paper Adapters

Assembly 40: Staplesmart Finisher I