IBM 8682 manual Diagnostic panel error LEDs

Diagnostic panel error LEDs

The system error LED is turned on when an error is detected. If the system error LED is on, remove the cover and check the diagnostic panel LEDs. The following is a complete list of diagnostic panel LEDs followed by the FRU/Action for correcting the problem.

Note: If a diagnostic panel LED is on and the information LED panel system error LED is off, there is probably an LED problem. Run LED diagnostics.

Notes:

1.To locate the LEDs on the system board see “System board component locations” on page 42

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 and processor error LEDs turn off when the system is powered down.

Note: The System Error LED will also be on.

Diagnostic Panel LED	FRU/Action
All LEDs off	1.	System Error Log is 75% full; clear the log.
(Check System Error Log for error	2.	Bad, missing or mis-installed processor terminator; remove and reinsert
		terminator.
condition, then clear System Error
Log when the problem is found.)	3.	PFA alert; check error log for failure; clear PFA alert; remove AC power for
		at least 20 seconds, reconnect, then power up system.
	4.	Run Information Panel diagnostics.
CPU LED on	1.	Insure terminator (or processor if multiprocessor system) is installed
(The LED next to the failing CPU		in slot D. See “Installing a microprocessor kit” on page 66
	2.	Processor 1, 2, 3, or 4
should be on.)
	3.	System Board.
DASD LED on	1.	Be sure the fans are operating correctly and the air flow is good.
(Check amber drive LED for a	2.	Failing drive.
failing hard drive if RAID system.)	3.	SCSI Backplane.
FAN LED on	1.	Check individual fan LEDs.
	2.	Replace respective fan.
	3.	Fan Cable.
	4.	System Board.
	5.	Power Backplane Board.
MEM LED on	1.	Failing DIMM(s) in slot J1-J16.
(The LED next to the failing DIMM	2.	Memory Card.
is on.)	3.	System Board.
NMI LED on	1.	Reboot the system.
Note: NMI LED can only be turned	2.	Check the System Error Log.
off by removing ac power from
system, then restoring ac power.

Symptom-to-FRU index 101