IBM System x3950, Problem Determination And Service Manual

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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 109 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 Action
VRM X Power Good Fault
1. Reseat VRM 3 or 4.
2. Reseat the microprocessor tray.
3. Replace VRM 3 or 4.
4. (Trained service technician only) Replace the microprocessor
tray.
Vtt Power Good Fault
1. Reseat the microprocessor tray.
2. (Trained service technician only) Reseat the microprocessors.
3. Reseat the microprocessor VRMs, if any are present.
4. (Trained service technician only) Replace the microprocessor
tray.
POST and SMI error messages
BIOS can log two types of error messages in the BMC log and the system-error log:
POST events, which occur during system startup, and SMI events, which are
generally run time errors detected by hardware. The following table describes the
possible POST and SMI error messages and suggested actions to correct the
detected problems.
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 109 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.
Error message Action
POST reporting Processor Event: Invalid
configuration of processor card. Chassis
Number = X.
Make sure that all microprocessors have the same part number.
POST reporting Processor Event: Processor
mismatch detected. Chassis Number = X.
Processor Number = Y.
1. Make sure that the BIOS code is at the latest level.
2. Make sure that all microprocessors have the same part
number.
3. (Trained service technician only) Replace the microprocessor.
POST reporting Processor Event: POST does
not support current stepping of processor.
Chassis Number = X, Processor Number = Y.
1. Make sure that the BIOS code is at the latest level.
2. Make sure that all microprocessors have the same part
number.
3. (Trained service technician only) Replace the microprocessor.
POST reporting Processor Event: Unable to
apply microcode (patch) update. Chassis
Number = X. Processor Number = Y.
(Trained service technician only) Replace the microprocessor.
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IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide