VAXstation 4000 Model 60

This document is the VAXstation 4000 Model 60 Service Information manual, published by Digital Equipment Corporation in February 1992. It serves as a comprehensive support and reference guide for Digital Services personnel and customers undertaking maintenance and self-maintenance of the VAXstation 4000 Model 60 workstation.

The manual covers a wide range of topics, including:

• An overview of the system module, detailing its components like the Central Processor Unit (CPU), memory, interrupt controller, secondary cache, ROM, graphics controller, serial line controller, time-of-year clock, network controller, and SCSI controller.
• Model 60 firmware, explaining power-up initialization code, console operations, extended self-tests, system and option ROMs, configuration tables, and driver interfaces.
• System configuration, describing the system box, power supply, internal cabling, control panel, and I/O panel, along with their specifications.
• Using the console with various commands for system control, memory manipulation, processor control, and alternative console methods.
• Detailed procedures for diagnostic testing, including power-up tests, system configuration display, device-specific tests, running self-tests continuously, and descriptions of error codes and utilities for different system components (e.g., TOY/NVR, LCG, DZ, CACHE, SCSI).
• Instructions for removing and replacing Field Replaceable Units (FRUs) such as mass storage drives, power supplies, various modules (memory, graphics, CPU, communications), and the system bezel.
• Appendices provide extensive information on interpreting error codes, reading diagnostic LED codes from the console control panel, troubleshooting symptoms with possible causes and corrective actions, and a comprehensive list of FRU part numbers.