KN210 CPU Module Set

This document provides comprehensive maintenance information for the KN210 CPU module set used in DECsystem 5400 systems. It covers the following key areas:

• System Overview: Describes the KN210 CPU and I/O modules, the MS650-BA memory module, and the H3602-AB CPU I/O panel.
• Configuration: Provides guidelines for system configuration, including module order, DSSI configuration, and a worksheet to ensure power and bus load compliance.
• Firmware: Details the KN210 firmware, including power-up sequences, bootstrap procedures for ULTRIX-32, maintenance mode commands, and normal mode commands.
• Troubleshooting and Diagnostics: Outlines ROM-based diagnostic procedures, including the use of scripts, the FE utility for isolating failures, troubleshooting memory and DSSI subsystems, and error message interpretations.
• Appendices: Include comprehensive address assignment maps, KFQSA storage adapter configuration instructions, a list of field-replaceable units (FRUs), and related documentation.