Chapter 6: Troubleshooting
System LEDs 207
6666
SDU Fail/Pass LED
The function of the Fail/Pass LED on the SDU is:
HPA LEDs
HPA Power LED
The function of the power LED on the HPA is as follows:
HPA Fail/Pass LED
The function of the Fail/Pass LED on the HPA is:
Behavior Description
Steady red Fail
Alternating: Short green /
long pause
Power On Self Test (POST) or
Person Activated Self Test (PAST) in
progress
Alternating: Long green/
short orange 0.5 Hz
No current failure, but a BITE failure/
warning is logged in the error log
Steady green No faults
LED Color Description
Steady green Power OK
Off No power
Behavior Description
Steady red Fail
Off No faults
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