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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 7, “Parts listing, ThinkServer RD220 Type 3729, 3779, 3797, and 3798,” on page 231 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 Action
Memory Area non-recoverable over temperature
fault
1. Make sure that the fans are operating and are not obstructed.
2. Make sure that the air baffles are in place and correctly
installed.
3. Make sure that the server cover is installed and fully closed.
4. (Trained service technician only) Replace the system board.
Fan n Failure
n = the fan number
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.
Fan n Fault
n = the fan number
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.
Hard Drive n Fault
n = the hard disk drive number
1. Reseat hard disk drive n.
2. Replace hard disk drive n.
Hard drive n removal detected.
n = the hard disk drive number
Reseat hard disk drive n.
Power supply n removed
n = the power supply number
1. Reseat power supply n.
2. Replace power supply n.
3. Replace the power backplane.
Power supply n fault
n = the power supply number
1. If the server power-on LED is lit, perform the following steps:
a. Reduce the server to the minimum configuration (see
“Features and technologies” on page 15 for a description of
the minimum 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
b. Power backplane
3. Replace the components listed in step 2, one at a time, in the
order shown, restarting the server each time.
140 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Hardware Maintenance Manual