DECstation 350

This document is a service guide designed to assist technicians in diagnosing and repairing the DECstation 350 system. It provides a comprehensive overview of the system's components and configurations, detailed troubleshooting instructions including power-up sequences, diagnostic tools, and symptom-based solutions. The guide also covers procedures for connecting and disconnecting the system from Ethernet networks, adjusting monochrome and color monitors, and performing removal and replacement of Field Replaceable Units (FRUs) such as keyboards, monitors, power supplies, and various internal boards. Additionally, it includes appendices detailing jumper and switch settings, and interrupt request (IRQ) information for the DECstation 350 architecture.