DEC 3000 Model 500/500S AXP Service Information

This document serves as a comprehensive support and reference guide for Digital service personnel and customers performing self-maintenance on the DEC 3000 Model 500/500S AXP workstation. It provides detailed information across various aspects of the system, including:

• System Overview: Descriptions of the workstation's CPU, memory subsystem, I/O module, power supply, and network interfaces, along with front and rear panel layouts and a system block diagram.
• Configuration: Guidance on setting up system module and I/O module jumpers, console security procedures (including password management), and configuring storage devices and memory, specifying jumper settings for various SCSI drives.
• Console Operations: An extensive list of console commands such as BOOT, SET, SHOW, TEST, DEPOSIT, EXAMINE, and HELP, detailing their parameters and qualifiers, as well as instructions for using alternate consoles via terminal or network.
• Diagnostic Testing: Information on Field Replaceable Unit (FRU) codes, diagnostic test listings, and procedures for running specific diagnostics for ASIC, NVR, Memory, CXT, SCSI, NI, SCC, ISDN, and TURBOchannel options, including how to enter and exit console and service modes.
• SCSI Utilities: Tools for displaying SCSI device information, erasing hard disks, formatting diskettes, and verifying disk integrity.
• Troubleshooting: Systematic tables and guidelines for diagnosing and resolving common issues, interpreting power-up LED error codes, understanding "84 Fail" messages, and addressing problems related to the system, monitor, mouse, keyboard, drives, network, audio, and firmware upgrades.
• FRU Removal and Replacement: Step-by-step instructions for physically removing and replacing various components, including the top cover, front and rear bezels, side panels, audio and lights/switch modules, power supply, disk drives, I/O module, fans, memory motherboards and modules, system module, and details on cable routing.
• Appendices: Supplementary information covering firmware upgrade procedures, monitor alignment diagnostics, comprehensive lists of LED codes and error/status messages for various diagnostics, a recommended spares list, and rackmount installation instructions for IEC RS–310 and H9A00–AJ cabinets.