Table 9-1 lists the LED codes for system operations.
Table 9-1 System Status Codes
Power |
Service |
Cycling |
Condition |
---|---|---|---|
Off |
Off |
Off |
No power or the key switch is in the Off position. |
Off |
On |
Off |
Failure mode. System has electrical power. |
Off |
Off |
On |
Failure mode. System has electrical power. |
Off |
On |
On |
Failure mode. System has electrical power. |
On |
Off |
Off |
System is hung, either in POST/OBP or in the operating system. |
On |
Off |
On |
Hung in OS. |
On |
On |
Off |
(Hung in POST/OBP) or (hung in OS and failed component in system). |
On |
On |
On |
(Hung in POST/OBP) or (hung in OS and failed component in system). |
On |
Off |
Flashing |
OS running. System is operating normally. |
On |
On |
Flashing |
OS running and failed component in system. |
On |
Flashing |
Off |
Slow flash = POST. Fast flash = OBP. |
On |
Flashing |
On |
OS or OBP error. |
LEDs in the system are controlled by OpenBoot(TM) PROM programming (OBP).