IBM 7979B1U User Manual page 43

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See the parts listing in the Problem Determination and Service Guide 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.
LED Description
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.
Action
Attention: In a dc power environment, only trained service
personnel other than IBM 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
Remote Supervisor Adapter II SlimLine.
4. Call for service
1. Check the LEDs on the hard disk drives and replace the
indicated drive.
2. Call for service.
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.
Replace the failing fan, which is indicated by a lit LED on the
fan itself.
1. Determine whether a fan has failed. If it has, replace it.
2. Make sure that the room temperature is not too high. See
"Features and specifications" on page 3 for temperature
information.
3. Make sure that the air vents are not blocked.
4. Call for service.
1. Check the LEDs on the system board to identify the
component that is causing the error.
2. Check the system-error log for information about the error.
1. Check the LEDs on the PCI slots to identify the component
that is causing the error.
2. Check the system-error log for information about the error.
3. 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.
4. Call for service.
Chapter 2. Installing optional devices
27