VAX 4000 Model 500A/505A/600A/700A/ 705A Troubleshooting & Diag

This document, titled "VAX 4000 Model 500A/505A/600A/700A/705A Troubleshooting and Diagnostics," serves as a guide for diagnosing and resolving problems with the specified VAX 4000 series computer systems.

The document is organized into three main chapters and two appendices:

1. Troubleshooting During Power-Up: Details how to identify and resolve issues that occur when the system is first turned on, including problems during self-tests, general boot sequence failures, and specific difficulties booting from EF/RF-Series Integrated Storage Elements (ISEs) or tape drives.
2. Troubleshooting During Normal Operation: Provides solutions for system-wide problems and specific issues encountered with various storage devices during regular use, such as EF/RF-Series ISEs, RRD3 Compact Disc drives, and multiple models of tape drives (TF-Series, TK50, TK70, TLZ07, TZ86, TZ87).
3. Running the MicroVAX Diagnostic Monitor (MDM): Offers comprehensive instructions on using the MDM software for diagnostics. This includes understanding MDM limitations, preparing to run it on various system configurations (diskless, tapeless, ISE, hard disk, or DSSI VAXcluster), and the steps for starting and utilizing its main menu options to test the system, display configurations, access utilities, and perform single device tests.

Appendices provide illustrations of system controls and indicators, and procedures for software and hardware write-protecting EF/RF-Series ISEs. The overall aim is to help users identify potential causes for system malfunctions and apply appropriate corrective actions.