Name: Lexmark X548 Series
Brand: Lexmark
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4-90 Service Manual

7525-63x

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9. With your right hand, pull the relay card end of the ADF cable up and away from the ADF while using your

left hand to guide the ADF cable up through the card cage opening.

Note: Be careful to avoid contact with the CCD ribbon cable.

10. Feed the ADF cable up between the left flatbed cover and flatbed unit, and gently pull the cable up.

Default Chapter3
- Table of Contents3
Table of Contents11
Notices and Safety Information11
- Laser Notice11
- Lithium Warning17
- Safety Information17
Preface20
- Change History20
- Conventions21
General Information23
- Models23
- Options and Features23
- Media Handling31
- Digital Imaging Specifications38
Fax Specifications40
- Phone Network Connectivity40
- Fax Resolutions40
- Miscellaneous Fax Specifications40
Tools Required for Service41
Acronyms42
Diagnostic Information45
Start45
- Symptom Tables45
- Service Errors (1Xx.XX, 8Xx.XX, and 9Xx.XX's)45
- User Status and Attendance Messages45
Power-On Reset (POR) Sequence45
Symptoms Tables46
- Printer Symptoms Table46
- Scan / Fax / Copy Symptom Table47
- Print Quality Symptoms Table48
Error Codes and Messages49
- User Status and Attendance Messages49
- 2Xx Paper Jam Messages54
- Service Error Messages57
- Fax Error Log Codes68
Service Checks72
- 900.XX System Software Error Service Check72
- 90X.XX Error (902.XX-907.XX) Service Check75
- 925.01 Fan Error Service Check75
- 950.XX NVRAM Failure Service Check76
- Autocompensator Mechanism Service Check76
- Bin Full Sensor Service Check77
- Dead Printer Service Check78
- Duplex/Manual Feed Sensor (S1) Service Check79
- Front Door Sensor or Switches Service Check80
- Fuser Exit Sensor Service Check81
- Fuser Service Check82
- Input Sensor (S2) Service Check83
- Main Drive Gear Assembly (EP Drive) Service Check84
- Operator Panel Service Checks85
- Networking Service Check88
- Print Quality Service Checks89
- Printhead Service Check98
Diagnostic Aids117
- User Operator Panel, Menus and Messages117
- Diagnostics Menu (Diag Menu)122
- Base Sensor Test136
  - Previous136
- Device Tests137
- Printer Setup137
- EP Setup139
- TPS Setup140
- Reports141
  - Menu Settings Page141
- Event Log141
- Scanner Tests142
- Exit Diags147
Configuration Menu148
- Available Tests148
- Reset Separator Roll and Pick Assembly Counter149
- USB Scan to Local149
- Print Quality Pages149
- Reports149
  - Menu Settings Page149
  - Event Log150
- Color Trapping150
- Tray Insert Msg150
- Panel Menus150
- PPDS Emulation151
- Factory Defaults151
- Energy Conserve152
- Fax Low Power Support152
- Min Copy Memory152
- Numpad Job Assist153
- Format Fax Storage153
  - Fax Storage Location153
  - Automatic Color Adjust153
  - ADF Edge Erase154
  - FB Edge Erase154
  - Scanner Manual Registration154
  - Disable Scanner155
  - Jobs on Disk155
  - Disk Encryption155
  - Erase All Information on Disk155
  - Wipe All Settings155
  - Font Sharpening156
  - Pel Blurring156
  - Require Standby156
  - UI Automation156
  - Key Repeat Initial Delay157
  - Key Repeat Rate157
  - Clear Custom Status157
  - Pel Blurring157
  - USB Speed157
  - USB Pnp158
  - Automatically Display Error Screens158
  - Exit Config Menu158
- SE Menu159
  - Print Se Menus159
- Invalid Engine Code Mode160
  - Backing up Esf Applications and Settings160
- Paper Jams161
  - Avoiding Jams161
  - Understanding Jam Numbers and Locations162
- Updating Printer Firmware170
- Theory of Operation171
  - Print Engine Theory171
  - Paper Path Transport Components180
  - Scanner Theory182
    - Duplex ADF182
  - Color Theory183
Handling ESD-Sensitive Parts187
Testing Generic Frus187
Repair Information187
Removal Procedures188
Print Engine Removal Procedures188
- Front Cover Assembly Removal189
- Front Middle Cover Removal190
- Left Cover Removal190
- Right Cover Removal193
- Rear Shield Removal193
- AIO Back Cable Cover Removal194
- Top Cover Assembly Removal195
- Autocompensator Mechanism (ACM)-Standard Tray Removal199
- Bin Full Sensor Removal202
- Narrow Media Sensor Flag Removal203
- RIP Board Removal205
- Duplex Reference Edge Removal209
- Duplex Sensor Removal215
- Fax Card Removal217
- Fuser Assembly Removal218
- Fuser Drive Motor Assembly Removal222
- Fuser Exit Sensor Removal223
- Hard Drive Removal225
- High-Voltage Power Supply (HVPS) with Spring Assembly Removal226
- Image Transfer Unit (ITU) Removal229
  - ITU Without Spring Clamp Kit Removal229
  - Continuing the Removal (with or Without Spring Clamp Kit)231
- Developer Unit Removal233
- Low-Voltage Power Supply (LVPS) Assembly Removal234
- Left Lower Frame and Right Lower Frame Removal236
  - Left Lower Frame236
  - Right Lower Frame239
- Main Drive Gear Assembly with Motor Removal243
- Pick Tires Removal-Integrated 250-Sheet Media Tray246
- Printhead Removal247
- Imaging Unit (IU) Removal249
- Toner Cartridge Contacts Removal250
- Toner Meter Cycle (TMC) Card Removal252
- Toner Patch Sensor (TPS)-Left and Right Removal254
- Tray Present Sensor Removal255
- USB Connector Removal258
- Waste Toner Bottle Removal259
- Waste Toner Bottle Contact Block Removal260
Scanner Component Removal Procedures261
- Flatbed Removal261
  - Preparing and Installing the New Flatbed268
- Flatbed Pivot Link Removal271
- Duplex ADF Rear Cover Removal272
- Duplex ADF Removal273
- ADF Input Tray Removal274
- ADF Cable Removal275
- ADF Separator Pad Removal277
- ADF Separator Roll Assembly Removal278
- Redrive Unit Removal279
- Scanner Left Cover Removal280
- Scanner Right Cover Removal280
- AIO Release Lever Removal282
- AIO Link Removal283
- AIO Toner Cover Removal284
- Bin Full Flag Removal285
Locations301
- Exterior Views301
Preventive Maintenance321
- Safety Inspection Guide321
- Scheduled Maintenance321
  - Customer Replacable Units (Crus)321
  - Maintenance Kit321
- Lubrication Specifications322
- Cleaning the Printer322
  - Cleaning the Exterior of the Printer322
  - Cleaning the Scanner Glass323
Parts Catalog325
- How to Use this Parts Catalog325
- Assembly 1:Covers326
- Assembly 2:Scanner328
- Assembly 3:Operator Panel330
- Assembly 4:Paperpath332
- Assembly 5:Electronics 1334
- Assembly 6:Electronics 2336
- Assembly 7:Media Drawers and Trays338
- Assembly 8:Options340
Index341
Part Number Index347

Lexmark X548 Series Service Manual

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Brand	Lexmark
Model	X548 Series
Category	All in One Printer
Language	English