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Light Path Diagnostics panel
The Light Path Diagnostics LEDs are described in the following table. For more
information, refer to "Diagnostic Panel LED" on page 109.
Diagnostic panel
Description
LED
MEM
A memory failure occurred. This LED is turned on when any of the Light Path LED's located
near the memory (DIMM) are turned on by the integrated system management processor.
CPU
A CPU failure occurred. This LED is turned on when either of the two Light Path LED's located
near the appropriate CPU socket is turned on by the integrated system management processor.
PCI A
Error occurred on an adapter in PCI slot 1 or on one of the PCI devices integrated on the
system board.
PCI B
Error occurred on an adapter in PCI slot 2 or 3 or on one of the PCI devices integrated on the
system board.
PCI C
Error occurred on an adapter in PCI slot 4 or 5 or on one of the PCI devices integrated on the
system board.
VRM
A VRM failure occurred. This LED is turned on by the hardware when either of the two Light
Path LED's located near the appropriate VRM is turned on by the integrated system
management processor.
DASD
System board or SCSI hot-swap hard disk drive failure, hard disk drive removed from either
standard or optional expansion hot-swap bay DASD backplane, or hard disk drive temperature
has exceeded maximum limit (in this case, the TEMP and System error LEDs will be lit).
SP
An error has been detected in the integrated system management processor.
PS1
Power supply 1 failure or removed.
PS2
Power supply 2 failure or removed.
PS3
Power supply 3 failure or removed.
Server power supplies are no longer redundant (applicable only with redundant power feature).
NON
OVER
Over specification. The system has exceeded the power capabilities (max. rating) of the installed
power-supply units.
Nonmaskable interrupt occurred.
NMI
TEMP
System temperature exceeded maximum limit. Other LEDs will be on to identify the area of
over temperature (such as CPUx, CPU, DASD LEDs).
Fan failure, or fan is operating slowly or has been removed. This LED is turned on when any of
FAN
the Light Path LED's mounted directly on the fan assemblies or near the CPU sockets are
turned on by the integrated system management processor.
46
Hardware Maintenance Manual: xSeries 232, Type 8668
MEM
PS1
CPU
PS2
PCI A
PS3
PCI B
NON
PCI C
OVER
VRM
NMI
DASD
TEMP
SP
FAN
REMIND
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