Lenovo ThinkServer RD120 Hardware Maintenance Manual page 184

LED Problem
SP The service processor has failed.
DASD A hard disk drive error has occurred.
RAID A RAID controller error has occurred.
FAN A fan has failed, is operating too slowly,
or has been removed. The TEMP LED
might also be lit.
TEMP The system temperature has exceeded
a threshold level. A failing fan can
cause the TEMP LED to be lit.
BRD An error has occurred on the system
board.
PCI An error has occurred on a PCI bus or
on the system board. An additional LED
will be lit next to a failing PCI slot.
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ThinkServer RD120 server Machine Types 6444, 6445, 6446, and 6447: Hardware Maintenance Manual
Action
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.
1. Remove power from the server; then, reconnect the server
to power and restart the server.
2. Update the firmware on the BMC.
3. If a Remote Supervisor Adapter II SlimLine is installed,
update the firmware; if the problem remains, replace the
adapter.
4. (Trained service technician only) If the problem remains,
replace the system board .
1. Check the LEDs on the hard disk drives and replace the
indicated drive.
2. If the problem remains, replace the hard disk drive
backplane.
1. Make sure that a RAID controller is installed.
Note: The server will not start without a RAID controller
installed.
2. Check the system-error log for information about the error.
(Use the Configuration/Setup Utility program to view the
error logs.)
Replace the failing fan, which is indicated by a lit LED on the
fan body.
v Determine whether a fan has failed. If it has, replace it.
v Make sure that the room temperature is not too high. See
"Features and specifications" on page 3 for temperature
information.
v Make sure that the air vents are not blocked.
v Check the LEDs on the system board to identify the
component that is causing the error.
v Check the system error log for information about the error.
(Use the Configuration/Setup Utility program to view the error
logs.)
v Check the LEDs on the PCI slots to identify the component
that is causing the error.
v Check the system error log for information about the error.
(Use the Configuration/Setup Utility program to view the error
logs.)
v If you cannot isolate the failing adapter through the LEDs
and the information in the system error log, remove one
adapter at a time from the failing PCI bus, and restart the
server after each adapter is removed.
If the problem remains, replace the following components, in
the order shown, restarting the server each time:
v PCI riser card
v (Trained service technician only) System board