Removal and replacement of the ACU
8-18 Chapter 8: Service 98-141779-G
8.5 Removal and replacement of the ACU
There are no parts in the ACU that you can remove or replace. Contact your Cobham
SATCOM service partner for further repair or replacement.
8.6 Removal and replacement of ADU modules
All replacement of modules must be carried out by a Cobham SATCOM service partner. The
figure below shows the modules and their position. Some modules are equipped with LEDs
for status information and troubleshooting. An overview of the antenna modules is shown
in Above Deck Unit (ADU) on page 2-3.
For instructions how to open and remove the service hatch see To open the service hatch
on page 3-20.
Before contacting your service partner check the LEDs on all modules (VIM, DDMs, PCM,
PMM and ISM). See LEDs of the ADU modules on page 8-16 and LEDs in the ACU on
page 8-17.