AlphaServer 1000A Service Guide

This document is the AlphaServer 1000A Service Guide, intended for Digital Equipment Corporation service personnel and qualified self-maintenance customers.

It provides comprehensive procedures and tests for servicing AlphaServer 1000A systems, which utilize a deskside "wide-tower" enclosure. Key areas covered include:

• Troubleshooting Strategy: Classifies system problems (power, console access, boot, operating system errors) and outlines diagnostic flows.
• Power-Up Diagnostics: Explains how to interpret audible error beep codes, SROM error codes, and power-up screen displays to identify failures in components like memory, mass storage, and EISA/PCI buses. It also details the use of a Fail-Safe Loader for firmware recovery.
• System Diagnostics: Describes running ROM-based diagnostics (RBDs), including commands for testing core systems, memory, and network interfaces, along with error reporting and status monitoring. It also covers the use of the DEC Verifier and Exerciser Tool (DEC VET) for deeper system stress testing.
• Error Log Analysis: Guides on interpreting operating system error logs, including machine check/interrupt types, and using the DECevent utility to translate and report these errors.
• System Configuration and Setup: Provides information on verifying hardware configuration, switching between SRM, ARC, and AlphaBIOS firmware interfaces, and configuring system bus options (EISA, ISA, PCI), SCSI buses, power supplies, and console ports.
• FRU Removal and Replacement: Offers detailed procedures for removing and replacing Field-Replaceable Units (FRUs) such as cables, CPU daughter boards, fans, StorageWorks drives, backplanes, memory modules, motherboards, NVRAM chips, and removable media drives.
• Jumper Settings: Documents default jumper settings for the motherboard and CPU daughter board.