IBM pSeries 670 Service Manual page 680

Error Code Description
4B23 258A The processor repeat gard function has
deconfigured a processor.
4B23 25C7 The processor repeat gard function has
deconfigured a processor.
660 Eserver pSeries 670 Service Guide
Action/
Possible Failing FRU
Do the following:
1. Go to the processor
configuration/deconfiguration menu, which is
under the system information menu in the
service processor menus.
Look at the status of the processors. If any
of the processors have a status of
"manually deconfigured," reconfigure the
processor(s) and boot the system to the
SMS menus. Power down the system; look
again at the status of the processors.
If all of the processors are still configured in
the processor configuration/deconfiguration
menu, the problem has been resolved.
If any of the processors have a status of
"deconfigured by the system," either before
or after the boot to the SMS menus, go to
step 2 on page 609.
2. Replace the processor MCM (on which the
deconfigured processor resides) specified
by the location code.
Do the following:
1. Go to the processor
configuration/deconfiguration menu, which is
under the system information menu in the
service processor menus.
Look at the status of the processors. If any
of the processors have a status of
"manually deconfigured," reconfigure the
processor(s) and boot the system to the
SMS menus. Power down the system; look
again at the status of the processors.
If all of the processors are still configured in
the processor configuration/deconfiguration
menu, the problem has been resolved.
If any of the processors have a status of
"deconfigured by the system," either before
or after the boot to the SMS menus, go to
step 2 on page 609.
2. Replace the processor MCM (on which the
deconfigured processor resides) specified
by the location code.