Checkpoints
These servers use various types of checkpoints, error codes, and SRNs, which are referred to throughout
this book (primarily in Chapter 4, “Checkpoints,” on page 135, Chapter 5, “Error Code to FRU Index,” on
page 159, Chapter 6, “Loading the System Diagnostics In Service Mode,” on page 349, and Chapter 11,
“Parts Information,” on page 467). 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 these 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 (dc power in a dc-powered
system) is connected to the system until the AIX login prompt is displayed after a successful
operating system boot. These checkpoints have the following forms:
8xxx 8xxx checkpoints display from the time ac power (dc power in a dc-powered system) is
connected to the system until the OK prompt is displayed by the service processor on the
operator panel display. (Several 9xxx checkpoints are displayed just before the OK prompt
displays.)
9xxx 9xxx checkpoints are displayed by the service processor after the power-on sequence is
initiated. A system processor takes over control when 91FF displays on the operator panel.
Exxx Exxx checkpoints indicate that a system processor is in control and is initializing the
system resources. Control is being passed to AIX when E105 (normal mode boot) or E15B
(service mode boot) displays on the operator panel.
Note: Location code information may also display on the operator panel during this time.
0xxx
0xxx codes are AIX checkpoints and configuration codes. Location codes may also be
shown on the operator panel display during this time.
2xxx 2xxx codes are AIX checkpoints and configuration codes. Location codes may also be
shown on the operator panel display during this time.
Note:
Certain checkpoints may remain in the display for long periods of time. A spinning cursor is
visible in the upper-right corner of the display during these periods to indicate that system
activity is continuing.
Error
Codes
If a fault is detected, an 8-digit error code is displayed in the operator panel display. A location
may be displayed at the same time on the second line of the display.
Checkpoints can become error codes if the system fails to advance past the point at which the
code was presented.
For a list of checkpoints, see Chapter 4, “Checkpoints,” on page 135. Each entry provides a
description of the event and the recommended action if the system fails to advance.
SRNs Service request numbers, in the form xxx-xxx or xxx-xxxx, may also be displayed on the operator
panel display and be noted in the AIX error log.
SRNs are listed in the RS/6000 and Eserver pSeries Diagnostic Information for Multiple Bus
Systems, order number SA38-0509.
68 Service Guide
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