VAXstation 4000 VLC Service Information

This document is the VAXstation 4000 VLC Service Information manual. It serves as a support and reference guide for Digital Service personnel and qualified customers with self-maintenance agreements, focusing on maintenance tasks for the VAXstation 4000 VLC workstation.

The manual covers various aspects of the system, including:

• An overview of system components such as the CPU, main memory, network interface, and SCSI controllers.
• Detailed system configuration information.
• Insights into the diagnostic firmware, including power-up initialization code, console operations, extended self-tests, and utilities.
• Guidance on diagnostic testing, including power-up tests, extended self-tests, and utility tests, along with console commands for system interaction and troubleshooting.
• Procedures for removing and replacing Field Replaceable Units (FRUs).
• Appendices providing comprehensive lists of self-test error codes, diagnostic LED error codes, troubleshooting symptoms and corrective actions, and FRU part numbers.