Microprocessor Problems - IBM x3655 - System - 7985 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 x3655, Type 7985," on page 97 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.
Symptom
The server emits a continuous
beep during POST, indicating
that the microprocessor is not
working correctly.
Action
1. Correct any errors that are indicated by the LEDs (see "Light path diagnostics
LEDs" on page 141).
2. Make sure that the server supports all the microprocessors and that the
microprocessors match in speed and cache size.
3. (Trained service technician only) Make sure that microprocessor 1 is seated
correctly.
4. (Trained service technician only) Reseat the microprocessors.
5. (Trained service technician only) Remove microprocessor 2 and restart the
server.
v If no beep code occurs, microprocessor 2 might have failed; replace the
microprocessor.
v If the beep code remains, remove microprocessor 1 and install
microprocessor 2 in the connector for microprocessor 1; then, restart the
server. If no beep code occurs, microprocessor 1 might have failed; replace
the microprocessor.
6. (Trained service technician only) Replace the microprocessors.
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Chapter 5. Diagnostics