MicroVAX 3100, VAXserver 3100, InfoServer 100 and InfoServer 150/150 VXT Maintenance Guide

This document is a Maintenance Guide for MicroVAX 3100, VAXserver 3100, and InfoServer 100/150 VXT systems, published in March 1992. Its primary purpose is to provide Field Replaceable Unit (FRU) level instructions for troubleshooting, adjustment, and repair to Field Service personnel and self-maintenance customers.

The guide is structured into eight chapters and eight appendices, covering:

• Testing Procedures: Details on using console mode, running power-up tests, self-tests, and system exerciser diagnostics, including interpretations of various error codes and summary reports.
• Troubleshooting: Specific procedures for diagnosing and resolving issues related to various system components like the time-of-year clock, nonvolatile RAM, serial line controllers, memory, floating point units, interval timers, SCSI bus controllers, communication modules, Ethernet circuits, and power supply.
• Utilities: Descriptions of console commands for managing system configuration, setting boot options, and performing operations such as tape/diskette diagnostic key creation, data erasing, and diskette formatting.
• FRU Removal and Replacement: Step-by-step instructions for removing and replacing components in Model 10 and Model 20 systems (e.g., system modules, memory, drives, boards, power supply, battery pack), and within RZ55, RRD40, and TK50Z expansion boxes.
• Operating Information: Guidance on booting systems and operating various storage devices like tape drives, compact disc drives, and diskette drives.
• Appendices: Comprehensive references including console test commands, command syntax and definitions, console messages, VMB boot error codes, power-up and self-test error codes, system exerciser error codes, diagnostic LED definitions, and a recommended spares list.