The Power MAP deals with isolation of components to diagnose a power problem. The
nature of power problems can be related to powering up and down the system, or
power failures that 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.
Checkpoints
Model 270 servers use various types of checkpoints, error codes, and SRNs, which are
referred to throughout this book (primarily in Chapter 4, “Checkpoints”, on page 71,
Chapter 5, “Error Code to FRU Index”, on page 93, Chapter 6, “Loading the System
Diagnostics”, on page 147, and Chapter 10, “Parts Information”, on page 271). These
codes may appear in the service processor boot progress log, the AIX error log, and the
operator panel display. Understanding the definition and relationships of these codes is
important to the service personnel who are installing or maintaining Model 270 servers.
Codes that can appear on the operator panel or in error logs are as follows:
Checkpoints
Checkpoints display in the operator panel from the time ac power is connected
to the system until the AIX login prompt is displayed after a successful
operating system boot. These checkpoints have the following forms:
E000 - E075
These checkpoints display from the time ac power is connected to the
system until the
OK
prompt displays on the operator panel display.
During this time, the service processor performs self-test and NVRAM
initialization.
E0A0 - E0E1
When power up is initiated, the service processor starts built-in
self-test (BIST) on the central electronics complex (CEC). VPD data
are read.
E0E2 - E2xx
This range indicates that the system processor is in control and is
initializing system resources.
E3xx
These codes indicate that the system processor is running memory
tests.
E1xx
The system firmware attempts to boot from devices in the boot list.
Control is passed to AIX when E105 (normal mode boot) or E15B
(service mode boot) displays on the operator panel display.
0xxx
0xxx codes are AIX checkpoints and configuration codes. Location
codes may also be shown on the operator panel display during this
time.
22
Service Guide
Summary of Contents for RS/6000 44P Series 270
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