Lenovo ThinkServer RD120 Hardware Maintenance Manual page 197

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.
Error code Description
166-415-001 System Management: Failed.
2
I C bus failure.
180-xxx-000 Diagnostics LED failure.
180-xxx-001 Failed front LED panel test.
180-xxx-002 Failed diagnostics LED panel test.
180-361-003 Failed fan LED test.
180-xxx-003 Failed system board LED test.
Action
1. Disconnect all power cords and external cables
from the server, wait 30 seconds, reconnect the
power cords and cables, and retry the test.
Attention: In a dc power environment, only
trained service personnel other than Lenovo
service technicians are authorized to connect or
disconnect power to the dc power supply. See the
documentation that comes with each dc power
supply.
2. Update the BMC firmware to the latest level.
3. Reseat the operator information panel cable.
4. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. Operator information panel assembly
b. (Trained service technician only) System
board
Run diagnostics panel LED test for the failing LED.
1. Reseat the operator information panel cable.
2. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. Operator information panel assembly
b. (Trained service technician only) System
board
Note: The Easy LED Diagnostics panel is part of the
operator information panel assembly.
1. Reseat the operator information panel cable.
2. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. Operator information panel assembly
b. (Trained service technician only) System
board
1. Reseat the fans.
2. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. Fans
b. (Trained service technician only) System
board
(Trained service technician only) Replace the system
board.
179
Chapter 5. Diagnostics