IBM System x3950 Type 8878 Service Manual page 151

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, "Parts listing, Type 8878 and 8879," on page 23 to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
System-error log message
Application Posted Alert to ASM
Backplane Power Good Fault
Board 2.5V Power Good Fault
Calgary Core 1.5V Power Good Fault
CEC Card Power Good Fault
CPU %d IERR detected, the system has been
restarted
CPU %d IERR, the CPU has been disabled
CPU %d non-critical over temperature warning
CPU %d non-recoverable over temperature fault 1. Make sure that the fans have good airflow and are not
CPU mismatch: CPU unsupported by VRM.
CPU nn, where nn is the CPU number.
CPU removal detected
Action
Information only
1. Reseat the microprocessor tray.
2. Reseat the memory cards.
3. (Trained service technician only) Replace the power backplane.
4. (Trained service technician only) Replace the microprocessor
tray.
1. Reseat the I/O board.
2. Replace the I/O board.
1. Reseat the I/O board.
2. Reseat the microprocessor tray.
3. (Trained service technician only) Replace the PCI-X board.
1. Reseat the microprocessor tray.
2. Reseat the I/O board.
3. (Trained service technician only) Replace the PCI-X board.
Information only; if the message remains:
1. (Trained service technician only) Reseat the microprocessors.
2. Reseat the microprocessor VRMs, if any are present.
3. (Trained service technician only) Replace the microprocessor.
Information only; if the message remains:
1. (Trained service technician only) Reseat the microprocessors.
2. Reseat the microprocessor VRMs, if any are present.
3. (Trained service technician only) Replace the microprocessor.
1. Make sure that the fans have good airflow and are not
obstructed.
2. (Trained service technician only) Reseat the microprocessor
heat sink.
obstructed.
2. (Trained service technician only) Reseat the microprocessor
heat sink.
Replace the 10.1 VRM with a 10.2 VRM.
Informational only; if the message remains:
1. (Trained service technician only) Reseat the microprocessors.
2. Reseat the microprocessor VRMs, if any are present.
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Chapter 5. Diagnostics