Training, Installation & Service Manual - Livewire Connections Ltd

Removal and replacement of ADU modules
5. Disconnect the 3 connectors at the right of the Azimuth DDM,
then the 2 SUB-D connectors at the left of the Azimuth DDM.
Figure 9-28: Azimuth DDM, connectors
6. Remove the 4x4 mm Allen screws (visible when the connectors
are removed) and remove the Azimuth DDM.
9.5.4.6 Inserting a new Azimuth DDM
To insert a new Azimuth DDM follow the instructions above in
reverse order.
9.5.5 Replacing the Polarisation Motor Module
(PMM)
9.5.5.1 Removing the Polarisation Motor Module (PMM)
To remove the Polarisation Motor Module, do as follows:
Tools needed:
• 4 x 150 mm Allen key
(located inside the
service door of the ADU)
• Flat head screw driver
1. Open the service hatch by releasing the two latches.
2. Switch off the power to the antenna on the service switch.
9-28 Chapter 9: Service & maintenance 98-133966-E2