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Training, Installation & Service Manual - Livewire Connections Ltd

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9.5.10.2 Inserting a new ISM<br />

To insert a new Inertial Sensor Module follow the instructions above<br />

in reverse order.<br />

9.5.11 Replacing the Polarisation Unit<br />

9.5.11.1 Removing the Polarisation Unit<br />

1. Open the service hatch by releasing the two latches.<br />

2. Switch off the power to the antenna on the service switch.<br />

3. Rotate the antenna pedestal so that the Azimuth DDM faces the<br />

service hatch.<br />

4. Press in and turn the elevation locking pin (only available from<br />

S/N TBD) to locked position.<br />

Removal and replacement of ADU modules<br />

Tools needed:<br />

• 4 x 150 mm Allen key<br />

(located inside the<br />

service door of the ADU)<br />

• Flat head screw driver<br />

• 11 mm open-end spanner<br />

• 18 mm open-end spanner<br />

9999<br />

<strong>Service</strong> & maintenance<br />

98-133966-E2 Chapter 9: <strong>Service</strong> & maintenance 9-73

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