Microprocessor Problems - IBM x3250 M3 Problem Determination And Service Manual

Microprocessor 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 4, "Parts listing, System x3250 M3 Types 4251, 4252, and 4261," on page 119 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.
v Go to the IBM support website at http://www.ibm.com/systems/support/ to check for technical information,
hints, tips, and new device drivers or to submit a request for information.
Symptom
A microprocessor LED is lit
during POST, indicating that the
microprocessor is not working
correctly.
Action
1. Make sure that the server supports the microprocessor.
2. (Trained service technician only) Make sure that the microprocessor is seated
correctly.
3. (Trained the service technician only) Reseat the microprocessor.
4. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. (Trained service technician only) Microprocessor
b. (Trained service technician only) System board
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Chapter 3. Diagnostics