TM8100 Mobile Radio Service Manual Disassembly and Re-assembly of Radio 141
May 2004 © Tait Electronics Limited
Remove Main-board
Assembly
The second stage, if necessary, in disassembling the radio body is to
remove the main-board assembly.
1. Remove the bung (if fitted) covering the auxiliary connector.
2. Remove the rubber seal around the RF connector — preferably
by hand. If necessary, however, lever up the seal by inserting the
blade of a small (about 3 mm) flat-bladed screwdriver in the gap
beneath the seal. See Figure 6.8. Do not damage the seal with
the screwdriver.
3. Note the five interior screws securing the main-board assembly;
these are labelled screw 1 to screw 5 in Figure 6.8. Use a Torx
T10 screwdriver to remove the screws. The order of removal is
immaterial, but good practice would be to follow the order from
screw 1 to screw 5.
4. Note the two exterior screws securing the main-board assembly;
these are labelled screw 6 and screw 7 in Figure 6.8. Use a Torx
T20 screwdriver to remove the screws.
5. The main-board assembly is now free of the chassis. Note the slot
in the heat-transfer block shown in Figure 6.7. Insert the blade of
a small (about 3 to 5 mm) flat-bladed screwdriver in the slot. Tilt
the screwdriver to lever up the front edge of the circuit board.
Grip the edge of the board and pull out the assembly, but avoid the
thermal paste on the heat-transfer block and PCB underside. The
areas coated with thermal paste are shown in Figure 2.11 and
Figure 6.9.
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