Tait TM8235, Service Manual

Page: 134 / 578

134 Disassembly and Reassembly TM8100/TM8200 Service Manual
© Tait Electronics Limited June 2006
Disassembling the
Main-Board
Assembly
The circled numbers in this section refer to the items in Figure 5.4 on
page 135 . This figure shows the 40W/50W configuration.
1. Remove the power connector seal
I
.
2. Use a torque-driver with a 3/16 inch (5mm) socket to remove the
D-range screwlock fasteners
H
.
3. Use a torque-driver with a 9/16 inch (14mm) long-reach socket to
remove the RF connector nut
1!
. Also remove the lock washer
1@
.
4. Use a Torx T10 screwdriver to remove the three screws
b
securing
the main board
1$
to the heat-transfer block
F
.
Note
Make sure not to touch the thermal paste on the heat-transfer
block and the underside side of the main board. If the thermal
paste is contaminated, you must re-apply thermal paste as
described in
“Reassembling the Main-Board Assembly” on
page 137 .
5. Separate the main board
1$
from the heat-transfer block
F
.
6. Inspect the inner foam D-range seal
E
and the outer foam seal
G
,
and replace if necessary.
7. The gap pad
1)
(40W/50W radio only) must be replaced each time
the heat-transfer block is separated from the main board.
8. To replace the power connector
J
:
■
With the 40W/50W radio, use a Torx T6 screwdriver to undo the
two screws
C
.
■
With the 25W radio, use a Torx T10 screwdriver to undo the two
screws
C
.