4.4.1 CPU Board
The new CPU Board is secured to the antenna frame using nine screws
rather than eleven.
2. Remove
nine
#6-32 machine screws from the PCB.
The following procedure has been inserted for replacing the azimuth
limit switch. As a result, Sections 4.6 through 4.8 of the Installation
and Technical Manual have been renumbered Sections 4.7 through 4.9.
4.6
Azimuth Limit Switch Assembly
Replacement
1. Rotate the antenna assembly, by hand, clockwise
until it stops.
2. Remove the printed circuit board (PCB) cover,
illustrated in Figure 4-2, using a #2 Phillips
screwdriver and a
3
⁄
8
" nut driver/socket.
3. At the CPU’s Molex connector, cut the black and
white wires from the azimuth limit switch (see
Figure 4-3). Leave about one inch (25 mm) of the
wires still connected for later reference.
4. At the azimuth limit switch cover, remove the hot
melt keeping the black and white wires in place
(see Figure 4-7).
3
54-0166 Addendum to Rev. B
Hot Melt
Retaining Screws
Figure 4-7
Azimuth Limit Switch Cover
