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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 "Accessing system error logs" on page 36 for information on how to access the service processor
error log.
Notes:
1. Go to "MAP 1548: Processor Subsystem Problem Isolation" on page 77 for any of the following
checkpoint hang conditions:
v A four-digit code in the range of 8xxx-E4FF, E5Ex, or E700-EFFF that is not listed in the checkpoint
tables.
v A four-digit code in the range of 8xxx-E4FF, E5Ex, or E700-EFFF that is listed in the checkpoint
tables but does not contain a repair action or FRU listing.
v A four-digit code in the range of 8xxx-E4FF, E5Ex, or E700-EFFF, in which all of the FRUs listed
have been replaced or service actions have been performed and the problem has not been
corrected.
2. Go to "MAP 1542: I/O Problem Isolation" on page 72 for any of the following checkpoint hang
conditions:
v A four-digit code in the range of E500 through E6FF (except E5Ex - see note 1 above) that is not
listed in the checkpoint tables.
v A four-digit code in the range of E500 through E6FF (except E5Ex - see note 1 above) that is listed
in the checkpoint tables but does not contain a repair action or FRU listing.
v A four-digit code in the range of E500 through E6FF (except E5Ex - see note 1 above), in which all
of the FRUs listed have been replaced or service actions have been performed 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 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.
Service processor checkpoints
Service processor checkpoints are in the range 8xxx to Bxxx. The message OK indicates successful
service processor testing and initialization. Firmware checkpoints are listed in "Firmware checkpoints" on
page 101.
Notes:
1. A spinning (or twirling) slash is displayed in the upper-right corner of the operator panel while some
checkpoints are being displayed. If the slash stops spinning, this indicates a hang condition.
2. Not all service processor checkpoints are supported.
94
NAS Gateway 500 Service Guide
Action
Go to "Service processor checkpoints".
Go to "Firmware checkpoints" on page 101.
Refer to the RS/6000 Eserver pSeries Diagnostic
Information for Multiple Bus Systems manual.
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