Lenovo ThinkServer RD120, Hardware Maintenance 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, 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 Description Action
One continuous beep Possible microprocessor problem.
1. Reseat the following components, one at a
time, in the order shown, restarting the
server each time:
v (Trained service technician only)
Microprocessor 1
v
(Trained service technician only)
Microprocessor 2 (if installed)
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)
Microprocessor 1
v
(Trained service technician only)
Microprocessor 2 (if installed)
v (Trained service technician only) System
board
Repeating short beeps Possible keyboard problem.
1. Reseat the keyboard cable.
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
v Keyboard
v (Trained service technician only) System
board
One long and one short
beep Possible video controller problem.
1. Reseat the optional video adapter (if
installed).
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
v Video adapter (if installed)
v (Trained service technician only) System
board
Chapter 5. Diagnostics
133