Lenovo ThinkServer RD120 Hardware Maintenance Manual page 207

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.
System event/error log message
Fan n Failure
n = the fan number
Fan n Fault
n = the fan number
Hard Drive n Fault
n = the hard disk drive number
Hard drive n removal detected.
n = the hard disk drive number
Power supply n removed
n = the power supply number
Action
1. Make sure that the connector on the fan is not damaged.
2. Make sure that the fan connector on the system board is not
damaged.
3. Make sure that the fan is fully installed (press down on the
fan).
4. Reseat fan n.
5. Replace fan n.
1. Make sure that the connector on the fan is not damaged.
2. Make sure that the fan connector on the system board is not
damaged.
3. Make sure that the fan is fully installed (press down on the
fan).
4. Reseat fan n.
5. Replace fan n.
1. Reseat hard disk drive n.
2. Replace hard disk drive n.
Reseat hard disk drive n.
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 and to install
and remove the dc power supply. See the documentation that
comes with each dc power supply.
1. Reseat power supply n.
2. Replace power supply n.
3. Replace the power backplane.
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Chapter 5. Diagnostics