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Diagnostic panel LEDs
The following illustration shows the LEDs on the diagnostics panel inside the server.
See Table 1 on page 19 for information on identifying problems using these LEDs.
CPU
Memory
Fan
A B C D
1 2 3 4
DASD
NMI
SP Bus
Event Log
Non Red
Over Spec
Te mp
PCI
Bus
Power
Supply
1 System board connector
2 Diskette drive connector
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
18 IBM xSeries 350 Type 8682: Hardware Maintenance Manual