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TracVision 6 Installation and Technical Manual
Excessive belt tension may result in
antenna reflector vibration.
4-10
4.6.2 Elevation Drive Motor Removal
and Replacement
1. Remove the Elevation Motor Molex connector
from the PCB (illustrated in Figure 4-3). Feed the
drive motor cable through the cutout to the front
of the elevation drive assembly support frame.
2. Remove the three stop nuts and washers that are
holding the motor in position (pictured in Figure
4-7). Withdraw the motor assembly from the
elongated slots.
3. Install the new assembly with the motor connector
facing down, as shown in Figure 4-7. Reinstall the
stop nuts and washers but do not tighten.
4. Install the new motor with the open holes in the
motor mounting plate behind the slots in the
frame and the motor connector facing down, as
shown in Figure 4-7. Reinstall the stop nuts and
washers but do not tighten.
5. Raise the motor and work the toothed drive belt
over the outer lip of the hub. Press down gently on
the motor body while rotating the antenna
reflector up and down to ensure free movement.
6. Adjust the belt tension for a maximum of
1
⁄
" (3 mm) deflection with moderate finger
8
pressure between the hub and gear. Some
readjustment may be necessary if the belt tension
results in excessive antenna reflector vibration.
7. Reconnect the Elevation Motor Molex connector to
the PCB.
4.7
Antenna LNB Replacement
The LNB assembly receives preamplifier operating power from
the IRD via the RF Detector PCB. Be certain that the IRD is
turned off or disconnected from its power source before
removing or reconnecting the LNB. The following sections
provide replacement instructions for both the European and
U.S.-style LNBs.
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Troubleshooting
