RA60 Disk Drive User Guide

This document is the RA60 Disk Drive User Guide (EK-ORA60-UG-001), published by Digital Equipment Corporation in January 1983.

It serves as a comprehensive manual for users of the RA60 removable-media disk drive, providing information on its characteristics, installation, and operation.

The guide is divided into three main chapters:

1. Introduction: Describes the RA60 Disk Drive, detailing its storage capacity (205 million bytes for 16-bit, 208 million bytes for 18-bit words), features (e.g., high data transmission speeds, universal power supply, self-diagnostics), various purchasing options (as add-on, cabinet-mounted, or part of UDA50 disk subsystems), and comprehensive technical specifications (performance, physical dimensions, environmental limits, and AC power requirements). It also lists other related documentation.
2. Installation: Provides detailed, step-by-step procedures for installing the RA60. This includes site preparation and planning (cleanliness, floor loading, heat dissipation, temperature/humidity), equipment unpacking, joining multiple cabinets, installing leveler feet, connecting internal and external SDI cables, understanding safety labels, setting voltage and frequency, removing shipping components (head locking pin, retaining bracket screw), plugging in the power cable, and installing add-on drives. The chapter concludes with a checkout procedure involving internal and subsystem diagnostics.
3. Operating Instructions: Explains the functions of the RA60's front-panel operator controls and indicators (RUN/STOP, FAULT, UNIT/READY, WRITE PROTECT, A and B Port Select Switches). It also provides instructions for powering the drive on and off, and detailed procedures for loading and unloading disk packs.