RA7x/SA7x Pocket Reference Guide

This document provides concise reference information for the Digital Equipment Corporation RA7x series disk drives (RA70, RA71, RA72, and RA73) and their corresponding SA7x enclosures. It covers technical characteristics, thermal stabilization specifications, capacity indicator switch settings, and comprehensive troubleshooting guidance. The guide includes detailed breakdown of drive status bits, OCP error codes, and a thorough list of internal error log events with their probable causes and specific fault numbers (FNs).