Figure 10.6 Replacing The Lpf/Directional Coupler Board - Tait TB8100 Service Manual

12V
Figure 10.6 Replacing the LPF/directional coupler board
100W PA
c
b
TB8100 Service Manual
© Tait Electronics Limited September 2006
3. If the ground plate
fit the N-type connector and tighten the two M3 Torx screws to
the correct torque
solder the N-type connector to the PCB.
If the ground plate is not already soldered to the shield wall:
fit the ground plate and N-type connector to the heatsink,
ensuring that the tab on the ground plate fits through the slot in
the shield wall
tighten the two M3 Torx screws to the correct torque
solder the N-type connector to the PCB
solder the tag on the ground plate to the inside of the shield wall.
Note
In both cases make sure that the ground plate sits flat against the
base of the N-type connector, otherwise the cover may not fit cor-
rectly.
4. Replace the RF links
5. Refit the shield lid and resolder the two tabs.
6. On a 12V PA, refit the boost regulator board (as described in
"Replacing the Boost Regulator Board in a 12V PA" on page
7. Refit the cover.
Note
If you are fitting a new board, make sure that the RF input tab
is left in place for a 5W or 50W PA, and removed for a 100W PA.
If you have to remove the tab, cut it off cleanly with a sharp cut-
ting tool (such as tin snips or a guillotine).
d
is already soldered to the shield wall:
c
and bridging links
f
e
d
Power Amplifier Board Replacement
b
.
193).
f
5W and 50W PA
189