DECstation 5000 Model 240 Hardware Installation Guide

This document is a hardware installation guide for the DECstation 5000 Model 240, dated October 14, 1991. It provides step-by-step instructions for:

1. Initial Setup: Unpacking the system unit and monitor, checking voltage requirements, and ensuring power switches are off.
2. Connecting Peripherals: Detailed guidance on connecting the monitor (color, grayscale, monochrome options), the keyboard and mouse/tablet, and various types of Ethernet network cables (ThickWire, ThinWire, Twisted-pair), including instructions for using loopback connectors on unused Ethernet ports.
3. External Storage: Attaching and managing external SCSI storage devices, emphasizing the importance of unique SCSI ID numbers and proper termination.
4. Communication Devices: Connecting modems or printers via 25-pin connectors or telephone-jack adapters.
5. Workstation Testing: Instructions for powering on the system, performing a self-test, and using console commands (cnfg) to verify installed hardware components (memory, Ethernet address, SCSI devices).
6. Software Installation: Outlines the process for installing the ULTRIX operating system from either a tape drive or a compact disc drive, including how to boot from these devices and typical installation durations.