Removal and replacement of ADU modules
98-150471-A02 Chapter 8: Service 8-11
In switch-off position the DC Motor Driver modules (DDM) the Polarisation Motor
Module (PMM) and the BUC are turned off for safe conditions during service and repair.
The switch must be in on position for normal ADU operation.
5. DC-Motor Driver Module for cross elevation (DDM).
6. Cross elevation motor and encoder.
7. Zero Reference Module (x4, 3 in the previous figure, 1 in the next figure) (ZRM) (not
visible on photo).
8. DC-Motor Driver Module for elevation (on the bottom side) (DDM).
9. Elevation motor and encoder (not visible on photo).
10.Polarisation Motor Module (PMM).
11.Polarisation motor.
12.Polarisation encoder (not visible on photo).
13.Block Up Converter (BUC). (behind cable screen)
14.Low Noise Block down converter (x2) (LNB)
15.Ortho Mode Transducer (OMT) (behind cable screen, not visible on photo).
16.Inertial Sensor Module (ISM).
17.Elevation locking pin to lock the antenna dish in a fixed position (for safety during
service) (not visible on photo).
SAILOR900HP.book Page 11 Monday, July 18, 2016 12:44 PM
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