Status signalling with LEDs and status messages
8-8
Chapter 8: Service
98-150471-A02
8.3.2
LEDs in the ACU
The ACU has 3 LEDs: Power, Logon and Fail/Pass LED.
Figure 8-5: ACU — LEDs
LED
Behaviour
Description
Power
Steady green
Power supply OK
Steady red
Power supply failure
Off
No power
Logon
Flashing green
Current status is displayed:
• Searching satellite
• Identifying satellite
• Carrier lock & TX enabled from modem
Steady green
Satellite link established
Off
No satellite link acquired
Fail/Pass
LED
Steady red
A fault which prevents operation is present
in the system (ACU, ADU).
Flashing green
A Power On Self Test (POST) or Person
Activated Self Test (PAST) in progress. The
current status is displayed.
Flashing red
Active BITE failure or warning. The event is
shown in the ACU display.
Steady green
No faults.
Table 8-2: LEDs on the ACU
SAILOR900HP.book Page 8 Monday, July 18, 2016 12:44 PM
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