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2xxx
Error Codes
If a fault is detected, an 8-digit error code is displayed in the operator panel display. A
location code may be displayed at the same time on the second line.
SRNs
Service request numbers, in the form xxx-xxx, xxx-xxxx, xxxx-xxx, or xxxx-xxxx may also
be displayed on the operator panel display and be noted in the AIX error log. SRNs will
not appear in the Linux system error log when Linux is the operating system.
Checkpoints can become error codes if the system fails to advance past the point at which the code is
presented. For a list of the checkpoints, see Chapter 4, "Checkpoints," on page 131. Each entry provides a
description of the event and the recommended action if the system fails to advance.
SRNs are listed in the RS/6000 Eserver pSeries Diagnostic Information for Multiple Bus Systems, order
number SA38-0509.
FRU Isolation
For a list of error codes and recommended actions for each code, see Chapter 5, "Error Code to FRU
Index," on page 159. These actions can refer to Chapter 10, "Parts Information," on page 365, Chapter 3,
"Maintenance Analysis Procedures (MAPs)," on page 53, or provide informational message and directions.
If a replacement part is indicated, direct reference is made to the part name. The respective AIX and
physical location codes are listed for each occurrence as required. For a list of locations codes, see
"Location Codes" on page 24.
Note: When the system is running under the Linux operating system, AIX location codes are not available.
To look up part numbers and view component diagrams, see Chapter 10, "Parts Information," on page 365.
The beginning of that chapter provides a parts index with the predominant field replaceable units (FRUs)
listed by name. The remainder of the chapter provides illustrations of the various assemblies and
components that make up the system.
FRU Identify LEDs
This system is configured with an arrangement of LEDs that help identify various components of the
system. These include, but are not limited to the following:
v Rack identify LED
v CEC drawer identify LED
v I/O drawer identify LED
v RIO port identify LED
v FRU identify LED
– Power subsystem FRUs
– CEC subsystem FRUs
– I/O subsystem FRUs
v I/O adapter identify LED
v DASD identify LED
The identify LEDs are arranged hierarchically, with the FRU identify LED at the bottom of the hierarchy,
followed by the corresponding CEC or I/O drawer identify LED, and the corresponding rack identify LED to
locate the failing FRU more easily.
0xxx and 2xxx codes are AIX progress codes and configuration codes. Location
codes may also be shown on the operator panel display during this time. AIX
progress codes and location codes will not appear if the LINUX operating system
is booting.
Chapter 2. Diagnostic Overview
41
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