Chapter 6: Troubleshooting
208 System LEDs
SBU LEDs
During the power-up procedure all LEDs on the front plate are orange. If all
3 LEDs on the front stay orange after power up, there can be several
reasons:
• The SBU software is corrupted.
• The SBU Enable pin has not been wired properly in the installation. For
further information see the AVIATOR 700 Installation and Maintenance
Manual, chapter 5.3 Electrical installation and wiring, 5.3.2 Wiring SDU
to SBU.
SBU Power LED
The function of the Power LED on the SBU is:
SBU Logon LED
The function of the Logon LED on the SBU is:
Behavior Description
Green Power OK
Orange During upstart procedure
Off No power
Behavior Description
Red Acquiring satellite network
Orange Network synchronization
Green Network logon
Off No acquired satellite/logged off
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