Table 3. Firmware Error Codes. (continued)
Error Code Description
Action / Possible Failing FRU
4B2xxxC7 System bus protocol/transfer error
(checkstop).
1. If a physical location code is
displayed in the operator panel or
by AIX diagnostics, replace the FRU
as indicated by the location code. If
a physical location code is not
available, continue.
2. In the service processor menus, go
to
″
Read Progress Indicators from
last System Boot
″
. If an arrow is
pointing to a location code replace
the FRU at that location code. If
there is no arrow pointing to a
location code, continue.
3. Go to “MAP 1540: Minimum
4B2xxxC8 A generic processor-detected
checkstop has occurred.
1. Try to reboot the system in service
mode to preserve the AIX error log.
Run diagnostics in problem
determination mode to determine
the cause of the failure if a new
SRN or error code is generated,
follow the actions for that code.
2. Try to boot AIX diagnostics from
CD-ROM.
v
If the boot is successful, run
advanced diagnostics and follow
the actions for any SRN or error
code that is generated. If the
same error code is generated, go
to “MAP 1540: Minimum
Configuration” on page 50.
v
If AIX standalone diagnostics do
not boot, follow the actions for
any new SRN or error code that
is generated. If the same error
code is generated, go to “MAP
1540: Minimum Configuration” on
page 50.
4B20000A All processors got deconfigured.
1. Replace processor card.
2. Replace system board
138
Service Guide
Summary of Contents for RS/6000 44P Series 270
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