Training, Installation & Service Manual - Livewire Connections Ltd

Removal and replacement of ADU modules
9.5.7.11 Removing the Polarisation Encoder
To remove the Polarisation Encoder, do as follows:
Tools needed:
• 4 x 150 mm Allen key
(located inside the
service door of the ADU)
• Flat head screw driver
1. Follow the instructions in Removing the Polarisation Unit on
page 9-73.
2. Disconnect the 6-pin connector (with the colored wires) from the
PMM, marked ORE, and free the cable to the Polarisation
Encoder.
ORE ZRM OMT
Figure 9-67: Removing the sub-D connector of the PMM
3. Loosen the 2x4 mm Allen screws and rotate the Polarisation
Encoder in the key holes.
4. Free the Polarisation Encoder from the cable holders.
5. Remove the Polarisation Encoder.
Figure 9-68: Polarisation Encoder, removing
9.5.7.12 Inserting a new Polarisation Encoder
To insert a new Polarisation Motor follow the instructions above in
reverse order.
9-54 Chapter 9: Service & maintenance 98-133966-E2