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Symptom-to-FRU index 147
4. The memory card DIMM error LEDs, processor error LEDs, and VRM error LEDs
turn off when the system is powered down.
Diagnostic Panel LED FRU/Action
All LEDs off
(Check System Error Log
for error condition, then
clear System Error Log
when the problem is
found.)
1. System Error Log is 75% full; clear the log.
2. Bad, missing or mis-installed processor terminator; remove
and reinsert terminator.
3. PFA alert; check log for failure; clear PFA alert; remove AC
power for at least 20 seconds, reconnect, then power up
system.
4. If failure reading I2C device, check devices on bus "X"; see
“I2C bus fault messages” on page 169.
5. Run Information Panel diagnostics.
CPU LED on
(The LED next to the failing
CPU should be on.)
1. Processor 1, 2, 3, or 4.
2. Processor/PCI Board.
VRM LED on
(The LED next to the failing
VRM should be on.)
1. Corresponding voltage regulator module.
2. Processor/PCI Board.
DASD LED on
(Check amber drive LED
for a failing hard drive.)
1. Be sure the fans are operating correctly and the air flow is
good.
2. Failing drive.
3. SCSI Backplane.
FAN LED on 1. Check individual fan LEDs.
2. Replace respective fan.
3. Fan Cable.
4. Processor/PCI Board.
5. I/O Legacy Board.
6. Power Backplane Board.
MEM LED on (The LED
next to the failing DIMM is
on.)
1. Failing DIMM(s) in slot J1-J16.
2. Memory Card.
3. Processor/PCI Board.
NMI LED on 1. Reboot the system.
2. Check the System Error Log.
PCI A LED on 1. PCI Card in slot 1 or 2. See “Processor board component
locations” on page 55.
2. Remove all PCI adapters from slots 1-6.
3. Processor/PCI Board
4. I/O Legacy Board.
PCI B LED on 1. Card in slots 3-6.See “Processor board component
locations” on page 55.
2. Remove all PCI adapters from slots 1-6.
3. Processor/PCI Board.
4. I/O Legacy Board.