IBM 866631Y - Netfinity 7100 - 8666, Hardware Maintenance Manual

Page: 133 / 198

Notes:
1. To locate the LEDs on the processor board see “Processor board component
locations” on page 41.
2. Check the System Error Log for additional information before replacing a FRU.
3. It may be necessary to view the system error log from a remote connection,
such as MOST.
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 Netfinity 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 141.
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 41.
2. Remove all PCI adapters from slots 1-6.
3. Processor/PCI Board
4. I/O Legacy Board.
Symptom-to-FRU index
123