VAX 4000 Model 105A Troubleshooting & Diagnostic Information

This document, the "VAX 4000 Model 105A Troubleshooting and Diagnostics Information" manual, provides procedures for solving basic problems with the VAX 4000 Model 105A system. It is intended for users with some prior computer experience.

The manual is divided into two main chapters:

• Troubleshooting and Diagnosing Problems: This chapter covers initial troubleshooting steps, including checking cables and power connections, performing power-up and self-tests, and identifying information needed when contacting Digital Services for support. It includes a comprehensive troubleshooting table for common issues related to system problems, storage elements (ISE), compact disc drives (RRD42/RRD43), diskette drives (RX26), and tape drives (TZ30/TLZ06/TLZ07/TZK10/TZK11).
• Running the Diagnostic Monitor: This section provides comprehensive instructions on how to use the MicroVAX Diagnostic Monitor (MDM), an optional software package. It details MDM's purpose (isolating faults, displaying configuration, testing devices), its limitations, and various procedures for preparing and starting MDM depending on the system configuration (e.g., diskless, VAXcluster, different media like tape or CD-ROM). It also describes the MDM's main menu options, such as testing the entire system or individual devices, and how to interpret diagnostic results.