Lexmark C930, C935 Color Laser Printer Service Manual

Lexmark C930 & C935 Service Documentation (2007 Edition)

• Original OEM publication (P/N 12G9765) covering base and configured models, including finisher and TTM/3TM/1TM modular options
• Instant download access immediately after checkout—fully searchable to find any part number in seconds
• System-level theory of operation mapped out for media transport, printhead scanning mechanics, and the complete xerographic process
• 120+ diagnostic error-code definitions directly linked to specific troubleshooting paths and required sensor checks
• Comprehensive parts catalog featuring 53 assembly illustrations for quick FRU identification

System Breakdown & Workshop Utility

This 568-page OEM reference breaks down the 5057-series platform to help you isolate faults faster on the bench. It thoroughly documents the xerographic process—from charge and exposure to development and transfer. You also get a clear look at the intricate media transport paths across both standard setups and optional input drawer configurations. Understanding how the electrical component control interfaces with the fuser's thermal management system is crucial for diagnosing complex feed issues without guesswork.

When a machine goes down, you need fast answers. The documentation categorizes error codes from the 200-series through the 900-series, connecting registration, transport, or printhead synchronization faults to the exact sensor or motor responsible. It outlines how to navigate the service menus, trigger diagnostic tests, and execute precise engine adjustments like color registration and fuser warm-up cycles.

Technical Data & Maintenance

Beyond troubleshooting, the manual provides hard data on operational environment limits, acoustic output, and standard specs like the 1.25 GHz processor and 512MB memory. Weighing in at 383 lbs (174 kg) without a finisher, these units require proper handling. Always secure heavy assemblies and verify voltage drops prior to component testing to ensure safe workshop practices. You will also find the exact factory procedures for lubricating feed assemblies and resetting the system counter after the critical 100K and 600K periodic service intervals.