Lenovo ThinkServer RD120 Hardware Maintenance Manual page 147

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.
Beep code
3-1-4
3-2-1
3-2-2
3-2-3
3-2-4
Description
Time-of-day clock failed.
Serial port failed.
Parallel port failed.
Math coprocessor test failed.
Failure comparing CMOS memory size
against actual.
Action
1. Reseat the battery.
2. Replace the following components one at
a time, in the order shown, restarting the
server each time:
a. Battery
b. (Trained service technician only)
System board
(Trained service technician only) Replace the
system board.
(Trained service technician only) Replace the
system board.
1. (Trained service technician only) Reseat
the microprocessors.
2. (Trained service technician only) Remove
microprocessor 2 and its VRM 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.
3. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
v (Trained service technician only)
Microprocessors
v (Trained service technician only) System
board
1. Reseat the following components, one at a
time, in the order shown:
a. DIMMs
b. Battery
2. Replace the components listed in step 1,
one at a time, in the order shown.
Chapter 5. Diagnostics
129