Microprocessor Problems; Monitor Problems - Lenovo ThinkServer RD120 Hardware Maintenance 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 3, "Parts listing, ThinkServer RD120 Machine Types 6444, 6445, 6446, and 6447," on page 25
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.

Monitor problems

Some Lenovo monitors have their own self-tests. If you suspect a problem with your
monitor, see the documentation that comes with the monitor for instructions for
testing and adjusting the monitor. If you cannot diagnose the problem, call for
service.
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ThinkServer RD120 server Machine Types 6444, 6445, 6446, and 6447: Hardware Maintenance Manual
Action
1. Correct any errors that are indicated by the LEDs (see "Easy LED Diagnostics"
on page 164).
2. Make sure that the server supports all the microprocessors and that the
microprocessors match in speed and cache size.
3. Reseat the following components:
a. (Trained service technician only) Microprocessors
b. VRM, if microprocessor 2 is installed
4. (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.
5. (Trained service technician only) Replace the following components, in the
order shown, restarting the server each time:
v Microprocessors and VRM
v System board