IBM xSeries 236 8841, User Manual

Page: 95 / 210

LED Problem Action
DASD/RAID A hard disk drive, integrated SCSI
controller, or integrated RAID error
has occurred.This LED will also be
lit when a hard disk drive is
removed from the server.
v
Check the LEDs on the hard disk drives and replace
the indicated drive.
v
Check the LEDs on the system board and replace the
indicated component.
v
If a hard disk drive LED remains lit after being
replaced, call for service.
TEMP The system temperature has
exceeded a threshold level.
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 5 of the
Installation Guide for temperature information.
v Make sure that the air vents are not blocked.
If the problem remains, call for service.
FAN A fan has failed or is operating too
slowly. A failing fan can also cause
the TEMP LED to be lit.
Replace the failing fan, indicated by the lit LED.
CPU A microprocessor has failed. If a lit LED on the system board indicates a problem with
a microprocessor, make sure that the microprocessor is
installed correctly.
Replace the failing microprocessor.
S_ERR A soft error has occurred. 1. Restart the server.
2. Update the firmware and adapter drivers.
3. Check the POST error log
VRM The VRM or integrated VRD has
failed.
v
Remove ac power from the server, and then restart
the server.
v
If the LED next to the VRM is lit, replace the
pluggable VRM.
v
If the LED next to the integrated VRD is lit, replace
the system board.
PCI BUS An error has occurred on a PCI
bus.
v Check the system error log for information about the
error.
v
If you cannot isolate the failing adapter through 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.
Replace the system board.
SERVICE
PROCESSOR BUS
The service processor has failed. Remove ac power from the server; then, reconnect the
server to ac power and restart the server.
Replace the failing service processor.
NMI A machine check error has
occurred.
Check the error log to diagnose the condition.
Chapter 4. Service replaceable units
85