IBM 8682 Diagnostic panel LEDs, Microprocessor fault, Memory fault, PCI Bus A PCIA, Dasd

Diagnostic panel LEDs

The following illustration shows the location of the LEDs on the diagnostic panel. The diagnostic panel LEDs are visible through a special cutout area located to the left of the cover-release latch on the top cover. However, to determine the exact location of the error condition in the server, you might need to remove the top cover to view the location of the error LED on the diagnostic panel.

Note: The diagnostic panel is also called the LED card.

System board connector Diskette drive connector

CPU	DASD
Memory
	NMI
PCI	SP Bus
Bus A B C D	Event Log
Power	Non Red
Supply 1 2 3 4	Over Spec
Fan	Temp

The meanings of these LEDs are as follows:

CPU	Microprocessor fault
Memory	Memory fault
PCI Bus A (PCIA)	PCI bus A fault
PCI Bus B (PCIB)	PCI bus B fault
PCI Bus C (PCIC)	PCI bus C fault
PCI Bus D (PCID)	Not implemented at this time.
Power supply 1	Power supply number 1 failure
Power supply 2	Power supply number 2 failure
Power supply 3	Power supply number 3 failure
FAN	Fan failure
DASD	Hard disk drive fault
NMI	Nonmaskable interrupt
SP Bus	Service processor failure
Event Log	Not implemented at this time.
NON RED	Nonredundant power mode
OVER SPEC	Over specification
TEMP	System temperature failure

Notes:

1.The server does not support replaceable voltage regulator modules (VRMs).

2.The server supports a maximum of three PCI buses.

3.The server supports a maximum of three power supplies.

4.See “Light Path Diagnostics” on page 19 for a detailed description of these LEDs.

Installing options 47