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Lexmark C540N Service Manual

Lexmark C540N
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Preventive maintenance 6-1
5025-2xx, 4xx
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6. Preventive maintenance
This chapter describes procedures for printer preventive maintenance. Follow these recommendations to help
prevent problems and maintain optimum performance.
Safety inspection guide
The purpose of this inspection guide is to aid you in identifying unsafe conditions.
If any unsafe conditions exist, find out how serious the hazard could be and if you can continue before you
correct the hazard.
Check the following items:
• Damaged, missing, or altered parts, especially in the area of the On/Off switch and the power supply
• Damaged, missing, or altered covers, especially in the area of the top cover and the power supply cover
• Possible safety exposure from any non-Lexmark attachments
Lubrication specifications
Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use of lubricants other than
those specified can cause premature failure. Some unauthorized lubricants may chemically attack
polycarbonate parts. Use IBM no. 10 oil, P/N 1280443 (Approved equivalents: Mobil DTE27, Shell Tellus 100,
Fuchs Renolin MR30), IBM no. 23 grease (Approved equivalent Shell Darina 1), and grease, P/N 99A0394 to
lubricate appropriate areas. Use Nyogel type 774 to lubricate the Fuser Drive Assembly and Nyogel 744 to
lubricate the ITU and Cartridge Drive assemblies.
Scheduled maintenance
Maintenance kit
After 60,000 printed pages (sides) a maintenance kit may be required.
It is necessary to replace the fuser assembly, ITU, and duplex reference plate to maintain the print quality and
reliability of the printer. The parts are available as a maintenance kit with the following part numbers:
Maintenance kits
Description Part number
115 V Maintenance kit (115 V fuser, ITU, duplex reference edge) 40X2254
230 V Maintenance kit (230 V fuser, ITU, duplex reference edge) 40X2255
100 V Maintenance kit (100 V fuser, ITU, duplex reference edge) 40X2261

Table of Contents

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Lexmark C540N Specifications

General IconGeneral
Print TechnologyLaser
Print Resolution1200 x 1200 dpi
Standard Paper Capacity250 sheets
Input Capacity250 sheets
Output Trays Capacity150 sheets
ConnectivityUSB, Ethernet
Processor400 MHz
Standard Memory128 MB
Network ReadyYes
Warranty1 Year
Printer TypeLaser
Recommended Monthly Volume1500 - 3000 pages
Operating System CompatibilityWindows, Mac, Linux
Media TypeCard Stock, Envelopes, Labels, Plain Paper, Transparencies
Network10/100 Base-TX Ethernet

Summary

Lexmark C54x Printer General Information

Lexmark Printer Print Quality

Discusses component wear and checking print quality settings.

Lexmark Printer Power and Electrical Specifications

Details power requirements and typical electricity consumption.

Lexmark Printer Diagnostic Information

Lexmark Printer Diagnostic Start

Guide to locating error codes, symptoms, and service checks for troubleshooting.

Lexmark Printer POR (Power-On Reset) Sequence

Describes the sequence of events during printer startup self-test.

Lexmark Printer Symptom Tables

Lists printer symptoms and corresponding actions for diagnosis.

Lexmark Printer Error Codes and Messages

Details user status, customer attendance, and error messages with explanations.

Lexmark Printer Paper Jam Messages (2xx)

Lists paper jam error codes, descriptions, and instructions for clearing jams.

Lexmark Printer Service Error Messages

Provides a list of service error codes for printheads, fuser, and software issues.

Lexmark Printer Diagnostic Aids

Lexmark Printer Accessing Service Menus

Explains how to access diagnostic and configuration menus for testing.

Lexmark Printer Diagnostics Menu (Diag Menu)

Outlines the structure and available tests within the Diagnostics Menu.

Lexmark Printer Registration

Details how to adjust print registration for proper alignment.

Lexmark Printer Alignment Procedure

Guides on aligning color planes for optimal print quality.

Lexmark Printer Transfer Roll Service Check

Provides steps to check the transfer roll for proper function.

Lexmark Printer Repair Information

Lexmark ESD-Sensitive Parts Handling

Provides essential precautions for handling electronic components safely.

Lexmark Printer Removal Procedures

General guidelines for disassembling printer components and handling FRUs.

Lexmark Printer Controller Board Removal

Steps for removing the main controller board, a critical component.

Lexmark Printer Fuser Assembly Removal

Detailed steps for removing the fuser assembly.

Lexmark Printer Image Transfer Unit (ITU) Removal

Detailed procedure for removing the image transfer unit.

Lexmark Printer Printhead Removal

Steps for removing and replacing the printhead.

Lexmark Printer Connector Locations

Lexmark Printer Controller Board Diagram

Diagram showing the layout of connectors on the controller board.

Lexmark Printer Controller Board Connectors

Detailed pinout and signal information for controller board connectors.

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