5-5
Maintenance
54-0149 Rev. D
6. Reverse this process to install the replacement
PCB. Reinstall all cable connectors removed in
Step 4.
7. Carry out the LNB calibration procedure
(Section 5.4.2).
5.4.2 Antenna LNB Replacement
Estimated Time to Repair:
1
⁄
2
hour
The LNB receives preamplifier operating power from the IRD via
the PCB
– Fig. 5-1 and 5-3
. Be certain that the IRD is disconnected
from its power source before removing or reconnecting the LNB.
1. Disconnect both RF coaxial connectors at the LNB.
2. Remove the wing screw and washer from the LNB
clamp
– Fig. 5-3
.
3. Remove the top of the LNB clamp
– Fig. 5-3
.
4. Remove the LNB.
5. Replacement is the reverse of this procedure.
Check the rotation to ensure that the LNB is not
striking any wires or the baseplate.
!
" # $
%& $
TracVision SA is equipped with a
5x220 mm, 4-amp, 250 volt fast-
blow fuse, which is mounted on the
PCB. To access and replace the
fuse, remove the PCB cover.
Figure 5-4
PCB Connector Locations –
Rear View
When replacing the LNB, make
certain to restore it to its original
orientation, as shown in Figure 5-3.
