IBM pSeries 670 Service Manual page 329

Checkpoints enable users and service personnel to know what the server is doing, with some detail, as it
initializes. These checkpoints are not intended to be error indicators, but in some cases a server could
hang at one of the checkpoints without displaying an 8-character error code. It is for these hang
conditions, only, that any action should be taken with respect to checkpoints. The most appropriate action
is included with each checkpoint.
Before taking actions listed with a checkpoint, check for additional symptoms in the service processor error
log. See the "System Information Menu" on page 724 for information on how to access the service
processor error log.
Note: Go to "MAP 1540: Problem Isolation Procedures" on page 253 for any of the following checkpoint
hang conditions:
v A four-digit code in the range of 8xxx through EFFF not listed in the checkpoint tables.
v A four-digit code is in the checkpoint tables, but does not contain a repair action or FRU listing.
v All of the FRUs listed in the repair action have been replaced and the problem has not been
corrected.
Checkpoints listed in the following tables are in the format 8xxx, 9xxx, Axxx, Bxxx, or Exxx, where x is any
hexadecimal digit from 1-9 or A-F. If your system hangs with a checkpoint displayed that begins with
anything other than 8, 9, A, B, or E, go to the RS/6000 and Eserver pSeries Diagnostic Information for
Multiple Bus Systems.
Use the following table to determine where to find the checkpoint.
Symptom
You have a code that is of the form 8xxx, 9xxx, Axxx, or
Bxxx.
You have a code of the form Exxx.
You have a four-character code that is not of the form
8xxx, 9xxx, Axxx, Bxxx, or Exxx.
Action
Go to "Service Processor Checkpoints" on page 310.
Go to "Firmware Checkpoints" on page 317.
See the RS/6000 and Eserver pSeries Diagnostic
Information for Multiple Bus Systems.
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Chapter 4. Checkpoints