Removal and replacement of ADU modules
98-136280-B
Chapter 8: Service
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Ser
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5. Zero Reference Module (x3, 2 in the previous figure, 1 in the next figure) (ZRM) (not
visible on photo).
6. DC-Motor Driver Module for elevation (on the bottom side) (DDM).
7. Elevation motor and encoder (not visible on photo).
8. Low Noise Block downconverter (LNB) (not visible on photo).
9. Polarisation motor.
10. Polarisation Motor Module (PMM).
11. Inertial Sensor Module (ISM).
12. Elevation locking pin to lock the antenna dish in a fixed position (for safety during
service) (not visible on photo).
13. Pedestal Control Module (PCM).
14. Service switch.
In switch-off position the DC Motor Driver modules (DDM) and the Polarisation
Motor Module (PMM) are turned off for safe conditions during service and repair.
The switch must be in on position for normal ADU operation.
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Summary of Contents for 100
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