Lexmark X925 7541-03 series Laser MFP Manuals

Manuals and User Guides for Lexmark X925 7541-03 series Laser MFP. We have 1 Lexmark X925 7541-03 series Laser MFP manual available for free PDF download: Service Manual

Lexmark X925 7541-03 series Service Manual (500 pages)

Brand: Lexmark | Category: Printer | Size: 18 MB

Table of Contents
3
Notices and Safety Information

13
- Safety Information
  
  15
Preface

18
- Navigation Buttons
  
  18
- Change History
  
  19
- Conventions
  
  20
General Information

21
- Maintenance Approach
  21
- Models
  21
- Printer Configurations
  22
- Options and Features
  
  23
- Print Engine Specifications
  
  24
  - Power Specifications
    24
  - Electrical Specifications
    24
  - Clearances
    24
  - Acoustics
    25
  - Environment
    25
  - Performance
    26
  - Processor
    26
  - Memory
    26
  - Paper Specifications
    26
    
    Paper Sizes Supported by the Printer
    26
    
    Media Types
    27
    
    Media Weights
    28
  - Media Guidelines
    29
    
    Paper
    29
    
    Paper Characteristics
    29
    
    Unacceptable Paper
    30
    
    Selecting Paper
    30
- Scan Fax and Copy Specifications
  
  31
  - General Specifications
    31
  - Fax Features
    32
  - Scanner Specifications
    33
  - MFP Scan Speed
    34
- Tools Required for Service
  
  35
- Acronyms
  
  36
Diagnostic Information

39
- Start
  
  39
  - Safety Feature Notice
    39
  - Flatbed / ICC Card NVRAM
    40
  - Initial Check
    40
- POR (Power-On Reset) Sequence
  
  41
- Print Quality Issues
  
  42
  - Repeating Defects
    42
  - One Color Missing
    43
  - Contaminated Background
    43
  - Lowered Print Density
    44
  - White Stripes
    44
  - Uneven Print
    44
  - Partial Dirt
    45
  - Repeating Marks
    45
- Black Stripes
  
  45
- Unprinted Spots
  
  46
- Partially Dark or Light Print
  
  46
- Black Page
  
  47
- No Print
  
  47
- Stain on Back of Page
  
  48
- Failure to Fuse
  
  48
- Stains on Edge of Page
  
  48
ADF & Scanner Print Quality

49
- Image Quality Symptoms
  49
- Dark Image Quality (Using ADF or Scanner)
  
  49
- Vertical Lines (Process Direction Using the ADF)
  
  50
- Spots (Using Flatbed Scanner)
  
  50
- Skew (Using ADF)
  
  52
- Media Damage (Using ADF)
  
  53
- Black Page from Scanner
  
  54
Paper Jams

55
- Clearing and Troubleshooting Paper Jams
  
  56
  - Paper Jam
    56
  - Paper Jam
    57
  - Paper Jam
    58
  - Paper Jam
    59
  - 24X Paper Jam
    60
  - Paper Jam
    61
- Duplex Unit Service Check
  
  62
- Paper Path Service Checks
  
  62
- Paperfeed Unit Service Check
  
  65
- MPF Service Check
  
  66
- Clearing and Resolving Scanner Jams
  
  67
  - Paper Missing
    67
  - Scanner Static Jam - Scan Sensor Jam
    68
  - Scan Sensor Jam
    69
  - Scanner ADF Eject Jam
    70
  - Scanner ADF Cover Open Jam
    71
  - Flatbed Cover Open
    73
  - Scanner Carriage Locked
    73
- ADF Paper Jam Service Check
  
  74
Error Codes

76
- Abnormal Exit Motor
  
  76
- 976 XX Standard Network or Network Card X
  
  77
- 990 XX Service
  
  77
- Abnormal EEPROM
  
  77
- Service NCVRAM Mismatch
  
  77
- Service NV Failure
  
  77
- Service NVRAM Failure
  
  77
- Service Code CRC <Loc
  
  77
- Service System Board
  
  77
- Service NAND Failure
  
  77
- 959,XX Service Invalid Firmware
  
  77
- Service Memory Error
  
  77
- Service Emulation Error
  
  77
- Fax T30 Log Error Codes
  
  79
- Service Checks
  
  83
  - Black Printhead Error
    83
  - Cyan Printhead Error
    83
  - Magenta Printhead Error
    83
  - Yellow Printhead Error
    83
  - Thermistor 1 Error
    84
  - Thermistor 2 Error
    84
  - Thermistor 3 3 Error
    85
  - Belt Thermistor Error
    85
  - Fuser - Fuser Heater Error
    86
  - ON / off Switch Automatically Switching to the off Position Service Check
    86
  - Power Switch Error
    86
  - High Voltage Power Supply Error
    87
  - Density Sensor Error
    87
  - Abnormal Theta Sensor
    88
  - Temperature Humidity Sensor Error
    88
  - Drive Motor Error
    89
  - Fuser / Paper Exit Motor Error
    89
  - Tray1Error
    90
  - Tray 3 Error
    90
  - Tray 4 Error
    91
  - Tray 5 Error
    92
  - Fuser Fan Error
    92
  - Power Supply Unit Fan Error
    93
  - Main Unit Fan Error
    93
  - Rear Fan Error
    93
  - Service Check
    94
  - Invalid Configuration or ASIC Not Found
    94
  - Invalid AFE Setting
    94
  - Delayed Interrupt Detected
    95
  - Failed Indirect Register Test
    95
  - Failed External DRAM Test
    95
  - Image Pipe Time-Out
    95
  - Scanner DID Not Initiate Scan
    96
  - No Response / 842.01 HW Protocol / 842.02 Logical Protocol
    96
  - Carriage Home
    97
  - Pick Roll Failed to Engage
    97
  - Lamp Failure (Front Side)
    98
  - Device Had Modem Installed, but Config ID Indicates It Should Not
    98
  - Device Had HD Installed, but Config ID Indicates It Should Not
    98
  - Steps before Starting the 9Yy Service Checks
    98
    
    Collecting the History Information from the SE Menu
    99
    
    Collecting the Firmware Logs (Fwdebug and Logs.tar.gz) from the SE Menu
    99
    
    Collecting the Settings from the Menu Settings Page
    100
    
    Collecting Information from the User
    100
  - System Software Error
    101
  - SDRAM R/W Error
    104
  - MDC Error
    104
  - CPU Error
    104
  - MDC Controller Error
    105
  - EEPROM Error
    105
  - 950.29-EPROM Mismatch Failure
    106
  - Service Invalid Firmware Error
    107
- User Attendance Messages
  
  108
  - User Prompts
    108
  - User Attendance Messages (0-99)
    111
- Other Symptoms
  
  117
  - Print Engine
    117
  - Scan / Copy
    118
    
    ADF Streaks
    118
    
    Clipped Image When Scanning to USB from the ADF
    118
  - ADF Cover Open Service Check
    119
  - Fax Symptoms
    120
    
    Faxes Fail to Transmit
    120
    
    Fax Reception Fails
    122
  - Escalating a Fax Issue to Second-Level Support
    124
  - Words on Fax Are Stretched
    125
  - Incoming Fax Has Blank Spaces or Poor Quality
    125
  - No Dial Tone
    125
  - Fax Dials a Number, but no Connection Is Made
    125
- Other Service Checks
  
  126
  - Networking Service Check
    126
  - Option Card Service Check
    128
  - USB Port Service Check
    128
  - False Close Door Service Check
    128
  - Operator Panel Service Check
    129
    
    Display Functions but the Keyboard Doesn't Work Properly
    129
    
    Display Fails to Illuminate
    129
  - Insert Tray Service Check
    130
  - Paper Skew Service Check
    131
  - Imaging Unit (Photo Developer) Missing Service Check
    131
  - Option Card Service Check
    132
    
    Serial Port
    132
    
    Flash Options
    132
    
    DRAM Options
    132
    
    Hard Disk Option
    133
    
    Network Card Option
    133
    
    Error Code 976 - Network Card X
    133
    
    Network <X> Software Error
    133
  - Power Supply (Dead Machine) Service Check
    134
  - Printhead Service Check
    135
  - Transfer Belt up down Check
    135
  - Unable to Print from USB Thumb Drive Service Check
    136
  - Waste Toner Bottle Missing Service Check
    136
  - Wrong Paper Size Service Check - Tray1
    137
  - Wrong Paper Size Service Check - Tray2
    137
  - Paper in ADF Size Service Check
    138
Diagnostic Aids

139
- Understanding the Operator Panel and Menus
  
  139
  - Operator Panel (Need New Art)
    139
  - Understanding the Home Screen
    140
  - Using the Touch Screen
    141
  - Administrative Menus
    144
  - Accessing the Service Menus
    145
- Configuration Menu
  
  147
  - Entering Config Menu
    147
  - Reset Separator Roll and Pick Assembly Counter
    148
  - Reset Fuser Counter
    148
  - Reset Maintenance Counter
    148
  - Reset Transfer Belt Counter
    149
  - USB Scan to Local
    149
  - Black Only Mode
    149
  - Print Quality Pages
    149
  - Fuser Speed
    149
  - Reports
    149
  - Color Trapping
    149
  - Tray Insert Message
    150
  - Size Sensing
    150
  - Panel Menus
    150
  - PPDS Emulation
    150
  - Download Emuls
    150
  - Demo Mode
    150
  - Factory Defaults
    150
  - Energy Conserve
    151
  - Fax Low Power Support
    151
  - Min Copy Memory
    151
  - Numpad Job Assist
    151
  - Format Fax Storage
    151
  - Fax Storage Location
    151
  - Auto Align Adj
    151
  - Color Alignment
    152
  - ADF Edge Erase
    152
  - FB Edge Erase
    152
  - Scanner Manual Registration
    152
  - Disable Scanner
    152
  - Paper Prompts
    152
  - Envelope Prompts
    152
  - Action for Prompts
    153
  - Jobs on Disk
    153
  - Disk Encryption
    153
  - Erase All Information on Disks
    153
  - Wipe All Settings
    153
  - Font Sharpening
    153
  - Require Standby
    153
  - UI Automation
    153
  - Key Repeat Initial Delay
    154
  - Key Repeat Rate
    154
  - Clear Custom Status
    154
  - USB Speed
    155
  - USB Pnp
    155
  - Automatically Display Error Screens
    155
  - Exit Config Menu
    155
- Diagnostics Mode
  
  156
  - Entering Diagnostics Mode
    156
  - Diagnostic Mode Menus
    156
  - Scanner Calibration
    158
    
    Adjust Calibration Values
    158
    
    Reset Calibration Values
    158
  - Print Tests
    158
    
    Print Tests (Input Sources)
    158
    
    Print Quality Pages
    159
  - Hardware Tests
    159
    
    Panel Test
    159
    
    Button Test
    159
    
    DRAM Test
    159
    
    Serial Wrap Test
    160
    
    USB HS Test Mode
    161
  - Device Tests
    161
    
    Quick Disk Test
    161
    
    Disk Test/Clean
    161
    
    Flash Test
    162
  - Input Tray Tests
    162
  - Printer Setup
    162
    
    Defaults
    162
    
    Page Counts
    163
    
    Serial Number
    163
    
    Engine Setting (1-16)
    163
    
    Model Name
    163
    
    Configuration ID
    163
    
    Cal Ref Adj
    163
    
    Par 1 Strobe Adj
    164
  - Reports
    164
  - Event Log
    164
    
    Display Log
    164
    
    Print Log
    165
    
    Clear Log
    165
  - Scanner Tests
    166
    
    Scanner Calibration Reset
    166
    
    ASIC Test
    166
    
    Feed Test
    166
    
    Sensor Test
    166
    
    ADF Magnification
    166
  - Exit Diagnostics
    166
- Theory of Operation
  
  167
  - Printer Engine
    167
    
    Electrophotographic Process (EP Process)
    167
    
    MFP Electrophotographic Process Basics
    167
    
    Step 1: Charge
    168
    
    Step 2: Expose
    169
    
    Step 3: Develop
    170
    
    Step 4A: First Transfer
    171
    
    Step 4B: Second Transfer
    172
    
    Step 5: Fuse
    173
    
    Step 6: Clean/Erase
    174
    
    Cleaning Blade
    175
  - Paper Path Components
    176
    
    Paper Feed
    176
    
    Feeding Paper from a Tray
    178
    
    Feeding Paper from the MPF
    179
    
    Registration Sensor Actuator
    180
  - Scanner
    182
    
    Duplex ADF
    182
  - Color Theory
    185
    
    What Is RGB Color
    185
    
    What Is CMYK Color
    185
    
    How Is Color Specified in a Document to be Printed
    185
    
    How Does the Printer Know What Color to Print
    185
    
    Should I Use Postscript or PCL Emulation? What Settings Produce the Best Color
    185
    
    Why Doesn't the Printed Color Match the Color I See on the Computer Screen
    185
    
    The Printed Page Appears Tinted. Can I Adjust the Color
    185
    
    My Color Transparencies Seem Dark When They Are Projected. Is There Anything I Can Do to Improve the Color
    186
    
    What Is Manual Color Correction
    186
    
    How Can I Match a Particular Color (such as a Corporate Logo)
    186
    
    What Are Detailed Color Samples and How Do I Access Them
    187
Repair Information

189
- Handling ESD-Sensitive Parts
  
  189
- Removal Procedures
  
  192
  - Arrangement of Removals in this Chapter
    192
- Cover Removals
  
  193
  - RIP Cover
    193
  - Scanner Power Supply Access Cover
    194
  - Cord Cover
    194
  - Rear Cover
    195
  - Front Op Panel Cover
    199
  - Op Panel Top Cover
    201
  - Op Panel Bottom Cover
    203
  - Upper Right Cover
    204
  - Output bin (Print Engine Top) Cover
    205
  - Back Cave Cover
    206
  - Inner Right Cover
    207
  - Left Cover Removal
    210
  - Speaker Removal
    213
- Top Removals
  
  214
  - Output bin Full Sensor Actuator Removal
    214
  - LED Assembly Removal
    217
  - LED Print Head Removal
    219
  - Op Panel Paper Exit Guide Removal
    220
  - Paper Exit Guide Removal
    221
  - Bin Full Sensor Removal
    224
  - Paper Exit Sensor Removal
    225
  - Printhead Controller Board Removal
    225
  - Top EMI Sheild Removal
    227
- Front Removals
  
  228
  - Transfer Belt - CRU
    228
  - Transfer Belt Position Sensor Removal
    229
  - Paper Size Sensor Removal
    230
  - Photoconductor Lock Removal
    231
  - Cassette Stopper Removal
    232
- Left Side Removals
  
  233
  - Left EMI Shield Removal (Not a FRU)
    233
  - Low Volt Power Supply Removal
    239
  - Main Fan Removal
    241
  - Power Supply Fan Removal
    243
  - Theta Sensor Removal
    244
  - Density Sensor Removal
    245
  - Main Switch
    246
  - Scanner Power Supply Removal
    246
- Right Side Removals
  
  249
  - Fuser Removal
    249
  - Handle Cover Removal
    250
  - Duplex Removal
    251
  - Paper Feed Unit Removal
    256
  - Transfer Roll - CRU
    260
- Rear Removals
  
  261
  - RIP Board Removal
    261
  - Crossbar Removal (Not a FRU)
    262
  - Engine Board and Mount Removal (Not a FRU)
    263
  - Drive Unit Cover (Not a FRU)
    265
  - Drive Unit
    267
  - Drive Unit Motor C/M/Y/K
    271
  - Sub Drive Unit Removal
    272
  - Door Interlock Switch Removal
    277
  - Duplex Solenoid Removal
    278
  - Fuser Entry Sensor Removal
    279
  - Engine Board (MDCONT)
    280
  - Fuser Fan
    280
  - Fuser Exit Drive Unit Motor Removal
    281
  - Modem Removal
    282
  - Papertray Lift Motor Removal
    282
  - RIP Cage Removal
    283
- Toner Sensor Removal
  
  285
- Transfer Belt Motor Removal
  
  288
- Temperature and Humidity Sensor Removal
  
  289
- Rear Fan
  
  290
- Sub Frame Unit
  
  292
- Paper Size Switch Removal
  
  293
- Rear EMI Shield - Not a FRU
  
  294
- Paper Feed Motor Removal
  
  298
- HVPS Removal
  
  299
- Waste Toner Sensor Removal
  
  300
Scanner Area Removals

301
- ADF Assembly Removal
  
  301
- ADF Pick Roll Removal
  
  302
- ADF Separator Roll Removal
  
  303
- Flatbed Assembly Removal
  
  304
- Flatbed Front Cover
  
  305
- UICC Removal
  
  308
- Touchscreen Assembly Removal
  
  309
- ADF Relay Board
  
  310
- ICC Board
  
  311
- CCD Chassis
  
  312
- CCD Belt
  
  314
- Optical Paper Size Sensor
  
  315
- ADF Cable
  
  316
- ADF Motor Frame
  
  317
- ADF Solenoid
  
  320
- ADF Drive Clutch
  
  320
- ADF Input Tray
  
  321
- ADF Main Feeder
  
  322
- ADF Clutch
  
  325
- ADF Hinge
  
  325
- FB Hinge
  
  326
- Tray Paper Size Sensors
  
  326
- ADF Cover Open / ADF Pick Sensor
  
  330
- ADF Cover Open Sensor Actuator
  
  331
- Paper Present / Paper in Sensor
  
  332
- Paper Present Sensor Actuator
  
  333
- Paper in Sensor Actuator
  
  333
- Paper Path Sensor
  
  334
- Scan Sensor
  
  334
- Scan Sensor Actuator
  
  336
- Scan Sensor Cover (Not a Fru)
  
  337
- Duplex Timing Sensor
  
  340
- Duplex out (Scan Out) Sensor
  
  345
- Duplex out Sensor Actuator
  
  346
- Flatbed Cover Closed Sensor
  
  347
- Flatbed Upper Cover
  
  349
- Flatbed Scanner Cables Removal
  
  350
- Outer ADF Top Cover
  
  352
- Inner ADF Top Cover
  
  353
- ADF Relay Card Cover
  
  356
- Left ADF Cover
  
  356
- Right ADF Cover
  
  359
Duplex Unit Component Removals

361
- Duplex Clutch Removal
  
  361
- Duplex Timing Belt Removal
  
  362
- Duplex Exit / MPF Sensor Removal
  
  362
- MPF Clutch Removal
  
  363
- MPF Tray Assembly Removal
  
  364
- Paperfeed Unit Component Removals
  
  366
- Paperfeed Maintenance Kit Removals
  
  376
  - Pick Roll Removal
    376
  - Paperfeed Roll Removal
    376
  - Separator Roll Removal
    377
  - Registration Roll Removal
    378
  - MPF Roll Removal
    379
  - MPF Pad Removal
    381
  - Exit Guide (Paper Exit) Roll Removal
    384
- Option Paper Feed Removals
  
  390
  - Paper Feed Roll Removal
    390
  - Pick Roll Removal
    390
  - Separator Roll Removal
    391
  - Paper Size Switches Removal
    391
  - Paper Level Sensor Removal
    392
  - Transport Sensor Removal
    392
  - Paper Empty Sensor Removal
    393
  - Paper Full Sensor Removal
    393
  - Option Controller Board Removal
    394
  - Stepper Motor Removal
    394
  - Tray Lift Motor Removal
    395
  - Option Door Inter Lock Switch Removal
    396
  - Paper Feed Clutch Removal
    397
- Adjustments
  
  399
  - Calibrating the Scanner
    399
    
    Calibrating the Scanner Black Levels
    399
  - Adjusting ADF Magnification
    400
  - Adjusting Scanner Registration
    400
Locations

401
- Print Engine Cross Section
  401
- Flatbed / ADF Sensors
  403
  - Adf
    403
  - Flatbed Sensors
    403
  - Rip Board Connectors
    404
  - Scanner (Secondary) Power Supply
    425
  - Scanner ICC Board Connectors
    426
  - ADF Relay Card Connectors
    431
  - UICC Connectors
    434
- Option Feeder Locations
  
  435
  - Option Feeder Layout
    435
  - Option Board Layout
    436
  - Option Board Connector Values
    437
Preventive Maintenance

439
- Safety Inspection Guide
  
  439
- Lubrication Specifications
  
  439
- Scheduled Maintenance
  
  439
Parts Catalog

441
- How to Use this Parts Catalog
  
  441
- Assembly 1: Covers
  
  442
- Assembly 2: Flatbed and ADF
  
  444
- Assembly 3: Flatbed
  
  446
- Assembly 4: ADF 1
  
  448
- Assembly 5: ADF 2
  
  450
- Assembly 6: Duplex Components 1
  
  452
- Assembly 7: Duplex Components 2
  
  454
- Assembly 8: Paper Exit
  
  456
- Assembly 9: Base 1
  
  458
- Assembly 10: Base 2
  
  461
- Assembly 11: Base 3
  
  462
- Assembly 12: Paper Feed
  
  464
- Assembly 13: Electrical 1
  
  466
- Assembly 14: Electrical 2
  
  468
- Assembly 15: Upper Assembly
  
  470
- Assembly 16: Printhead Controller Board Cables
  
  472
- Assembly 17: Paper Trays
  
  474
- Assembly 18: Fuser
  
  476
- Assembly 19: 550 Sheet Option Feeder Covers
  
  478
- Assembly 20: 550 Sheet Option Feeder Base
  
  480
- Assembly 21: 550 Sheet Option Feeder Paper Feed
  
  482
- Assembly 22: 550 Sheet Option Feeder Tray
  
  484
- Assembly 23: Maintenance Kits, Power Cords, and Options
  
  486
Index

486
Part Number Index

493

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Lexmark X925 7541-03 series Laser MFP Manuals

Lexmark X925 7541-03 series Service Manual (500 pages)

Table of Contents

Notices and Safety Information

Safety Information

Preface

Navigation Buttons

Change History

Conventions

General Information

Options and Features

Print Engine Specifications

Scan Fax and Copy Specifications

Tools Required for Service

Acronyms

Diagnostic Information

Start

POR (Power-On Reset) Sequence

Print Quality Issues

Black Stripes

Unprinted Spots

Partially Dark or Light Print

Black Page

No Print

Stain on Back of Page

Failure to Fuse

Stains on Edge of Page

ADF & Scanner Print Quality

Dark Image Quality (Using ADF or Scanner)

Vertical Lines (Process Direction Using the ADF)

Spots (Using Flatbed Scanner)

Skew (Using ADF)

Media Damage (Using ADF)

Black Page from Scanner

Paper Jams

Clearing and Troubleshooting Paper Jams

Duplex Unit Service Check

Paper Path Service Checks

Paperfeed Unit Service Check

MPF Service Check

Clearing and Resolving Scanner Jams

ADF Paper Jam Service Check

Error Codes

Abnormal Exit Motor

976 XX Standard Network or Network Card X

990 XX Service

Abnormal EEPROM

Service NCVRAM Mismatch

Service NV Failure

Service NVRAM Failure

Service Code CRC <Loc

Service System Board

Service NAND Failure

959,XX Service Invalid Firmware

Service Memory Error

Service Emulation Error

Fax T30 Log Error Codes

Service Checks

User Attendance Messages

Other Symptoms

Other Service Checks

Diagnostic Aids

Understanding the Operator Panel and Menus

Configuration Menu

Diagnostics Mode

Theory of Operation

Repair Information

Handling ESD-Sensitive Parts

Removal Procedures

Cover Removals

Top Removals

Front Removals

Left Side Removals

Right Side Removals

Rear Removals

Toner Sensor Removal

Transfer Belt Motor Removal

Temperature and Humidity Sensor Removal

Rear Fan

Sub Frame Unit