DECstation 5000 Model 100 Series Hardware Operator's Guide

This document, the "DECstation 5000 Model 100 Series Hardware Operator's Guide (EK-PM32C-OG-003, Third printing, January 1992)", provides comprehensive instructions for operating, maintaining, and troubleshooting the hardware components of DECstation 5000 Model 120, 125, and 133 workstations. The primary difference between these models is their CPU speed (20 MHz, 25 MHz, and 33 MHz respectively).

The guide is structured to assist users with:

• Getting Started: Covers workstation site requirements (temperature, humidity, cleanliness, power, interference) and voltage requirements.
• Hardware Setup: Provides detailed steps for connecting the system unit, various types of monitors (color, monochrome, gray-scale), keyboards, mice, tablets, and optional dial/button boxes. It also includes instructions for attaching SCSI terminators and supplying power to the system and monitor.
• Internal Hardware Options: Offers procedures for installing and removing memory modules, changing CPU modules, and installing/removing internal hard disk drives and removable media drives, along with guidance on setting SCSI ID numbers.
• Network and External Device Connections: Explains how to connect the workstation to ThickWire, ThinWire, and unshielded twisted-pair Ethernet networks, external communication devices (like printers and modems), and external SCSI storage devices (expansion boxes, tape drives, compact disc drives), including managing SCSI ID numbers and cabling.
• Operation and Troubleshooting: Details how to turn the workstation on and off, perform power-up and system self-tests, check configuration displays, interpret diagnostic indicator lights, and resolve common hardware issues.
• Workstation Relocation: Includes steps for dismantling and packing the workstation for moving.

Appendices offer valuable reference material, including detailed equipment specifications, part numbers for components and documentation, connector pin assignments, and instructions for setting SCSI ID switches.