Chapter 2. Diagnostics Overview; Maintenance Analysis Procedures (Maps) - IBM RS/6000 Enterprise Server M80 Service Manual

Chapter 2. Diagnostics Overview

Model M80 and Model 6M1 systems use an integrated set of software diagnostic procedures to facilitate
isolation of failing components and system maintenance. This book, along with the RS/6000 and Eserver
pSeries Diagnostic Information for Multiple Bus Systems, are the basis of the diagnostic procedures for
Model M80 and Model 6M1 systems. In particular, the following sections in this book are important for the
trained service representative to understand and use when isolating a failure on the system:
v Chapter 4, "Checkpoints," on page 135
v Chapter 5, "Error Code to FRU Index," on page 159
v Chapter 6, "Loading the System Diagnostics In Service Mode," on page 349
v Chapter 11, "Parts Information," on page 467
The manufacturer recommends that systems configured with 4 GB of memory or greater have access to a
4 mm or 8 mm tape drive for submission of system dump information if required. This function can be
accomplished through locally attached or network-attached devices, as appropriate.

Maintenance Analysis Procedures (MAPs)

Maintenance analysis procedures (MAPs) guide the trained service person through the system. These
MAPs are the entry point for all isolation and error-recovery procedures. The MAPs are consistent with
existing procedures and methods. The system uses a set of integrated procedures, mentioned earlier, to
which the MAPS are the primary entry point.
The MAPS are as follows:
v Entry MAP
v Quick Entry MAP
v Problem Determination MAP
v Power MAP
v Minimum Configuration MAP
The Entry Map is the starting point for problem determination. The purpose of this MAP is to quickly point
to the appropriate MAP or service reference information either in this book, or in the common book set,
which includes the RS/6000 and Eserver pSeries Diagnostic Information for Multiple Bus Systems and
the PCI Adapter Placement Reference.
The Quick Entry MAP is a subset of the Entry MAP and helps to save time for some types of problems.
The Problem Determination MAP provides a structured analysis method to get an error code if one is not
provided by the customer, or if diagnostics cannot be loaded.
The Power MAP deals with isolation of components to diagnose a power problem. The nature of power
problems can be related to powering on and down the system, or power failures that can occur after
power is turned on.
The Minimum Configuration MAP is used to locate defective components not found by normal diagnostics
or error-isolation methods. This MAP provides a systematic method of isolation to the failing item or items.
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