General Information; Maintenance Approach - Lexmark T640 Service Manual

1. General information

The Lexmark™ T64x laser printers are letter quality page printers designed to attach to IBM-compatible
personal computers and to most computer networks.
The Lexmark T64x laser printers are available in the following models:
Model name
Lexmark T640
Lexmark T640n
Lexmark T642
Lexmark T642n
Lexmark T644
Lexmark T644n

Maintenance approach

The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the
service error codes, user status messages, user error messages, service checks, and diagnostic aids to
determine the printer problem and repair the failure. After you complete the repair, perform tests as needed to
verify the repair. See
Configuration
Non-network
Network
Non-network
Network
Non-network
Network
"Start" on page 2-1.
Machine type
4061-000
4061-010
4061-200
4061-210
4061-400
4061-410
General information
4061-xx0
1-1