AlphaServer 4000/4100 Service Manual

This document is a comprehensive service manual for the Digital AlphaServer 4000/4100 pedestal and cabinet systems, intended for customer service engineers. It provides detailed information necessary for servicing, troubleshooting, configuring, and maintaining these servers.

Key areas covered include:

1. System Overview: Introduces the system architecture, various system drawer models (BA30A, BA30B, BA30C), core components like CPUs, memory, system bus, PCI I/O subsystem, server control module, power control module, and power supply.
2. Power-Up Sequence: Explains the system's power-up and reset process, including SROM/XSROM firmware tests, error reporting, console displays, and the fail-safe loader.
3. Troubleshooting: Guides users on diagnosing problems using LEDs (CPU, bridge module, cabinet power/fan) and running diagnostic commands (test, test memory, test pci). It also details common power-related issues and their solutions.
4. Power System: Provides in-depth information on the power supply features, power control module functions (sequencing, monitoring, fault indication), power circuit diagrams, cover interlocks, and power configuration rules for different cabinet and pedestal setups.
5. Error Logs and Registers: Describes how to interpret various error log events (e.g., MCHK 670, 660, 630, 620, IOD-detected errors) using tools like DECevent, and explains the purpose and contents of hardware error registers (EISTAT, EIADDR, MCERR0, MCERR1, CAPERR, PCIERR1).
6. Removal and Replacement: Offers step-by-step procedures for the safe removal and replacement of field-replaceable units (FRUs), including CPU modules, memory modules, power control modules, system and PCI motherboards, server control modules, PCI/EISA options, power supplies, fans, and drives (floppy, CD-ROM).
7. Utilities and Remote Operation: Covers running system utilities like the EISA Configuration Utility (ECU) and RAID Standalone Configuration Utility, updating firmware using the Loadable Firmware Update (LFU) utility, and remotely monitoring and controlling the system via the Remote Console Monitor (RCM), including its commands and configuration.