KFQSA Module Installation and User Manual

This document is the KFQSA Module Installation and User Manual (EK-KFQSA-IN-003), published by Digital Equipment Corporation in 1992.

The manual provides comprehensive instructions for installing, configuring, and troubleshooting the KFQSA module, which serves as an adapter to enable Q-bus based MicroVAX systems to communicate with Integrated Storage Elements (ISEs) via the DSSI (Digital Storage Systems Interconnect) bus. It also details its use in DSSI VAXcluster configurations.

Key content areas covered include:

• General Information: An overview of the KFQSA module, descriptions of compatible system enclosures (BA440, BA213, BA123, BA23), and typical DSSI VAXcluster configurations (single, dual, and three-host).
• Preparation: Instructions for unpacking, inspection, and planning the system installation, including power and bus load considerations using configuration worksheets.
• KFQSA Switches: Guidance on setting the DIP switches on the KFQSA module to select appropriate Control and Status Register (CSR) addresses.
• Installation Procedures: Step-by-step instructions for installing the KFQSA module into various MicroVAX enclosures and for setting up DSSI VAXcluster configurations, including specific rules and cabling details.
• DSSI Subsystem Programming: Detailed procedures for configuring the KFQSA and connected DSSI devices. This can be done either through console commands (for MicroVAX systems with firmware version 4.1 or later) or using the MicroVAX Diagnostic Monitor (MDM) commands. This section covers determining and programming CSR addresses, managing the configuration table, and setting ISE allocation classes.
• Diagnostics: Information on power-on self-test (POST) diagnostics, interpreting LED error codes (fatal and nonfatal), and using MDM (NAKFA diagnostic) or console commands for testing DSSI devices.
• Troubleshooting: Common symptoms and their possible resolutions for KFQSA module failures and DSSI device issues.

The manual is intended for Digital Services personnel and qualified self-maintenance customers.