This document describes the various diagnostic tools available with the Everest board set and their relationship to the Everest system components and to one another. This document describes each of the diagnostic tools, the physical area of the system that they test, and the possible error messages.
The information contained in this document is organized as follows:
Chapter 1, "Theory of Operations," provides the theory of operations for the Everest board set. The various buses connecting the boards are described, along with the potential bus errors on each board.
Chapter 2, "Diagnostic Procedures," analyzes several fault-isolation procedures, including how to examine a frozen system and how to examine the IRIX and system controller error logs, and provides some general debugging hints. It also contains diagrams showing where errors are detected on the system boards and lists error messages.
Chapter 3, "Power Subsystem," discusses the power subsystem, and illustrates the inputs and outputs of all power supplies and on-board DC-to-DC converters. It also describes the power-up sequence and the various fault LEDs and other error-detection mechanisms.
Chapter 4, "Using the System Controller," explains the functions of the system controller, what causes various error messages to be generated, and what those messages mean.
Chapter 5, "PROM Monitor," describes the PROM monitor, as well as the power-on tests and the power-on diagnostics (POD). System board configuration and the PROM Monitor boot commands are also discussed.
Chapter 6, "Interactive Diagnostics Environment (IDE)," supplies information on the stand-alone IDE and IRIX error reporting.
Chapter 7, "IRIX Error Reporting," provides an overview of how the IRIX system reports errors.