Tait TM8100 mobiles Service Manual page 138

Opening the
Radio Body
Removing the
Main-Board
Assembly
>25W
138 Disassembly and Reassembly
The circled numbers in this section refer to the items in
page 139.
1. Use a Torx T20 screwdriver to remove the four screws
Important
If an options board is fitted inside the lid, an options loom
will connect the options board to the internal options con-
nector on the main board. In this case, carefully fold over
the lid and disconnect the loom.
2. Carefully remove the lid assembly
3. Inspect the main seal in the lid for damage, and replace if necessary.
The circled numbers in this section refer to the items in
page 139.
1. Remove the auxiliary connector bung
2. Remove the RF connector seal
bottom of the seal—preferably by hand. If necessary, lift up the tap
using the blade of a small flat-bladed screwdriver. Do not damage the
seal with the screwdriver.
3. Use a Torx T10 screwdriver to remove the screws
main board to the chassis.
4. Use a Torx T20 screwdriver to remove the screws
heat-transfer block to the rear of the chassis.
Note
Make sure not to touch the thermal paste on the chassis, the heat-
transfer block, and the underside of the main board. If the thermal
paste is contaminated, you must re-apply thermal paste as
described in
page 145.
5. Holding a hand over the chassis to catch the main-board assembly,
turn the chassis upside down and tap its fins on the edge of the
workbench. This will release the heat-transfer block from the chassis.
6. With the >25W radio, the gap pad
replaced each time the main board is removed.
d
.
j
using one of the tabs located at the
"Fitting the Main-Board Assembly to the Chassis" on
1)
© Tait Electronics Limited November 2007
Figure 5.3 on
c
.
Figure 5.3 on
h
(if fitted).
e
connecting the
i
connecting the
on the L-shaped ridge must be
TM8100/TM8200 Service Manual