Tait TB7100, Service Manual

Page: 103 / 370

TB7100 Service Manual Disassembly and Reassembly 105
© Tait Electronics Limited October 2005
7.6 Reassembling the Transmitter Module
The circled numbers in this section refer to the items in Figure 7.5 on
page 104 .
1. If the power connector has been replaced:
■
With the 25W board, use a Torx T10 torque-driver to tighten the
two screws
1!
to 3lb·in (0.34N·m).
■
With the 50 W/40 W board, use a Torx T6 torque-driver to
tighten the two screws
1!
to 1lb·in (0.11N·m).
2. The L-shaped gap pad
i
and (with the 50W/40W board) the
rectangular gap pad
j
must be replaced each time the board is
separated from the heatsink
1)
:
■
Remove any residue of the gap pad(s) from the underside of the
board and the heatsink.
■
Make sure that the heatsink and the heat plates are free of any dust.
■
Peel off the transparent film on one side of the L-shaped gap pad
i
and evenly press the gap pad on the contact surfaces of the
heatsink.
Important
With the 50W/40 W board, the rectangular gap pad
j
must not overlap the edge of the tin-plated copper plate
(refer to
Figure 7.6 ).
■
Peel off the transparent film on one side of the rectangular gap pad
and evenly press the gap pad on the contact surfaces of the board.
■
Peel off the transparent film on other of the gap pad(s).
Figure 7.6 Contact surfaces on the bottom side of the board
tin-plated
copper
plate contact surface
of rectangular
gap pad
Audio-PA area
contact surface of L-shaped gap pad