MicroVAX II

This document is the MicroVAX II 630QB Technical Manual (AZ-GLBAA-MN), published by Digital Equipment Corporation in November 1985.

The manual serves as a comprehensive guide for the MicroVAX II 630QB computer system, detailing its hardware, system options, configuration, diagnostics, and maintenance procedures.

Key areas covered include:

• System Enclosure (BA123-A): Descriptions of the enclosure's physical structure, internal components (control panel, mass storage shelves, signal distribution board, backplane, power supply, I/O distribution panel), air flow, and electrical distribution.
• Base System: Detailed information on the KA630-A CPU module (including its features, on-board memory, boot/diagnostic ROM, and console program) and the MS630 memory modules.
• System Options: A catalogue of supported communication (e.g., Ethernet, asynchronous/synchronous multiplexers), disk storage (e.g., RQDX controllers, RD/RX disk/diskette drives), and tape storage (e.g., TK50 tape drives) devices, including their configuration via jumpers and DIP switches.
• Configuration: Rules and examples for system expansion, covering module physical priority, expansion space, power requirements, bus loads, and guidelines for setting Control and Status Register (CSR) addresses and interrupt vectors.
• Diagnostics: Explanations of power-up self-tests, LED status indications, console error messages, and procedures for using the MicroVAX Maintenance System (MMS) to diagnose and troubleshoot both system-level and device-specific problems.
• Field Replaceable Units (FRUs): Step-by-step instructions for the removal and replacement of various components within the BA123-A enclosure, such as exterior panels, switches, boards, mass storage devices, fans, power supply, and the backplane.
• Appendices: Provides information on MicroVAX II console commands and detailed explanations of console error messages.

The manual is intended for users and service personnel responsible for the installation, configuration, maintenance, and troubleshooting of the MicroVAX II 630QB system.