2009 Lexmark T650, T650n, T652dn, T654dn Printer Service & Repair Manual (P/N 12G9824, Lfx547)

• Documents the 2009 Lexmark T650, T650n, T652dn, and T654dn laser printers, including 4062-XXX model variants
• Official Lexmark publication (P/N 12G9824, Lfx547, First Edition, June 2009)
• Includes over 100 diagnostic error code tables for identifying system, cartridge, and paper jam failures
• Delivers a technical foundation for evaluating printer system faults, from image quality to electrical and mechanical transport issues

Technical Documentation Scope

This documentation provides an in-depth look at the Lexmark T650 series system architecture. It outlines both basic and fully configured models equipped with peripheral options such as the 5-bin mailbox, StapleSmart Finisher, and high-capacity input trays. The manual breaks down printer theory of operation, outlining the paper path, duplexing mechanisms, and printhead control systems. For troubleshooting, comprehensive diagnostic tables correlate specific error codes to system failures like memory limits, cartridge region mismatches, and complex print data errors.

Specification and Component Data

The manual supplies technical data for critical subsystems, including high-voltage and low-voltage power supply cards. Connector location diagrams and test points help technicians evaluate main drive motors and cooling fan assemblies. A dedicated lubrication section outlines requirements for maintaining paper pick arm assemblies and fusers, while lifecycle charts for maintenance parts—such as the charge roll and transfer roller—assist in scheduling preventative care. Included parts catalogs help identify specific assemblies to ensure accuracy when sourcing field replaceable units.

Because printer servicing involves interacting with high-voltage electrical components and moving mechanical parts, this reference material is intended purely for informational review; qualified personnel should always exercise proper safety protocols during any diagnostic or maintenance procedures. This 572-page OEM publication equips service professionals with the charts, component diagrams, and specifications necessary to evaluate the T650, T652, and T654 printer lines.