3
i. Remove any of the six thermal pads that may
still be attached to heat sink blocks on the
antenna frame (see Figure 5). Then clean the
heat sink blocks with alcohol and dry.
j. Remove six new thermal pads from the blue
plastic backing (supplied in kit) and gently press
them onto the back of the new main board
within the stenciled outlines (see Figure 6).
k. Note the antenna serial number, located on the
frame, as shown in Figure 5. You will need to
enter this 9-digit number later.
l. Position the new main board over the mounting
holes at the five locations shown in Figure 7.
Lower the main board down onto the mounting
holes and hold it in place firmly, while securing
it with five new M3 screws (supplied in kit) in an
alternating cross-corner pattern. Tighten the
screws to 11 in.-lbs of torque.
m. Reconnect the cables to the main board (see
Figure 7, connectors 4 and 5).
n. Carefully reinstall the main board cover and
secure it in place with two new M4 screws
(supplied in kit). Then tighten the screws to
11 in.-lbs of torque.
o. Reconnect the gyro cable and the two RF cables
to the main board (see Figure 7, connectors 1-3).
Hold the connector body while tightening the
connector nut. Tighten to 15 in.-lbs of torque.
p. Slowly rotate the antenna assembly through its
elevation range to ensure the main board cover
does not restrict the antenna’s movement.
q. Inspect the inside of the antenna to make sure
you have not left any debris or tools inside.
Important!
Do not lower the replacement main board into
place until it is aligned perfectly above the
mounting posts. Doing so might disturb and
damage the thermal pads, resulting in potential
failure of the board.
Important!
Make sure that no wires get pinched between the
main board cover and the frame, and that the cover
is benched against the back of the frame before it is
secured.
Figure 5: Heat Sink Blocks and Serial Number Location
Figure 6: Thermal Pad Stencils (Back of the Main Board)
Figure 7: Main Board Mounting Holes and Cable Connectors
4
3
5
2
1
Connector Label Key:
2 = LNB RF Connector
3 = R/J RF Connector
1 = Gyros, 8-pin
5 = AZ/EL Motor Cable, 10-pin
4 = Antenna ID Dongle, 6-pin
= Mounting Hole (x5)