Name: Lexmark X548 Series
Brand: Lexmark
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4-88 Service Manual

7525-63x

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7. Remove the ADF assembly.

Note: After installing the new ADF unit, perform the scanner calibration procedure and the scanner

manual registration procedure. See “Scanner Calibration” on page 3-14 and “Scanner Manual

Registration” on page 3-38.

ADF input tray removal

1. Firmly grasp the ADF input tray on both sides.

2. Pull the ADF input tray out of the ADF.

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