MS630 Memory Problem

This document outlines the memory maintenance strategy for MS630 memory arrays used in MicroVAX II systems. It provides detailed diagnostic procedures for identifying the cause of memory problems, classified as hard faults, transient faults, multiple symptom faults, or intermittent faults. The guide instructs users on how to determine the nature of a fault through system logs, diagnostic tools (like POST and MDM), and system behavior. It also includes specific instructions for replacing Field Replaceable Units (FRUs) and properly tagging non-conforming material for return to logistics.