Lenovo ThinkServer RD120 Hardware Maintenance Manual page 208

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
Power supply n fault
n = the power supply number
Power supply n AC power removed
n = the power supply number
Power supply n fan fault
n = the power supply number
Power supply current exceeded max spec value Attention:
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ThinkServer RD120 server Machine Types 6444, 6445, 6446, and 6447: Hardware Maintenance Manual
Action
1. If the server power-on LED is lit, perform the following steps:
a. Reduce the server to the minimum configuration (see
"Solving undetermined problems" on page 194 for a
description of the miniimum configuration).
b. Reinstall the components you removed, one at a time,
restarting the server each time.
c. If the error reoccurs, the component you just reinstalled is
defective; replace the defective component.
2. Reseat the following components:
a. Power supply 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.
b. Power backplane
3. Replace the components listed in step 2, one at a time, in the
order shown, restarting the server each time.
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. Make sure that the power cords are correctly connected to the
server and to a working power source.
2. Replace power supply n.
3. Replace the power backplane.
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. Make sure that there are no obstructions, such as bundled
cables, to the airflow on the power-supply fan.
2. Replace power supply n.
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. Make sure that two power supplies are installed, and that the
power cords are correctly connected to the power supplies and
to a working power source.
2. Replace the power backplane.