LG06 Text and Graphics Printer Maintenance Manual

This document is the Maintenance Manual for the LG06 Text and Graphics Printer, published by Digital Equipment Corporation (2nd Edition, July 1992).

It provides comprehensive instructions for field service personnel on how to maintain and repair the LG06 printer. Key areas covered include:

• Maintenance Overview: General information about the manual, printer controls and indicators, and a list of required tools and supplies.
• Scheduled Maintenance: Procedures for preventive maintenance checks and services, including inspecting and cleaning the printer.
• Troubleshooting: Detailed guides for diagnosing printer malfunctions based on fault messages (e.g., "Paper Jam," "Ribbon Stall," "48 Volt Failed"), other symptoms, diagnostic self-tests, and hex code printouts.
• Adjustment Procedures: Instructions for various calibrations and alignments, such as paper scale, hammer phasing, platen open belt, paper drive motor pulley, platen angle, platen gap, ribbon guide, and splined shaft skew adjustments.
• Replacement Procedures: Step-by-step instructions for the removal and installation of numerous components, including cables, circuit boards (PCBAs), motors, fans, covers, springs, switches, and other mechanical assemblies.
• Appendices: Supplementary technical details on printer configuration, specifications (dimensions, environmental characteristics, electrical, printing rates), torque tables, cable interconnections and wiring diagrams, and principles of operation.

The manual emphasizes safety warnings, cautions against damaging equipment, and provides vital information for proper printer operation.