Tait TM8000 Series Service Manual page 47

Table 2.3 Parts of the radio body
Index Reference
1 Figure 2.8
2 Figure 2.8
3 Figure 2.8
4 Figure 2.8
5 Figure 2.9
6 Figure 2.9
7 Figure 2.9
8 Figure 2.11
9 Figure 2.11
10 Figure 2.11
11 Figure 2.11
12 Figure 2.11
13 Figure 2.12
14 Figure 2.12
15 Figure 2.12
16 Figure 2.12
17 Figure 2.12
18 Figure 2.12
Note
The characters xx in an IPN stand for the issue number. Items in the radio body will always be the latest issue
at the time the radio body is manufactured.
Dissipation of Heat
from Regulator and
Audio PA
Dissipation of Heat
from RF PAs and Driver
TM8100 Mobile Radio Service Manual
May 2004 © Tait Electronics Limited
IPN Description
303-23166-xx Cover
365-01712-xx Label for cover
349-02067-xx M4 x 16 screw for lid of radio body
362-01115-xx Control-head seal
312-01091-xx Lid of radio body
362-01109-xx Main seal in lid
302-50000-xx Bung for aperture for external options connector
303-11225-xx Chassis of radio body
349-02066-xx Internal M3 x 10 screw for main-board assembly
362-01113-xx Seal for RF connector
349-02067-xx External M4 x 16 screw for main-board assembly
302-50001-xx Bung for auxiliary connector
349-02066-xx M3 x 10 screw for heat-transfer block
308-13147-xx Heat-transfer block
362-01114-xx Rubber seal for power connector
354-01043-xx Lock-nut for auxiliary connector
362-01112-xx Outer foam seal for auxiliary connector
362-01110-xx Inner foam seal for auxiliary connector
Heat from the regulator and audio PA is conducted to the underside of
the chassis via a screw boss on the floor of the chassis. The boss is in
contact with the underside of the PCB where the components are
mounted. A coating of thermal paste on the screw boss ensures the
necessary thermal contact between the boss and the PCB. The coated
area is shown in Figure
Heat from the RF PAs and driver is conducted to the cooling fins via a
copper plate and the heat-transfer block. The copper plate is fixed to the
underside of the PCB beneath these components. It is in contact with a
large metal block projecting from the front of the heat-transfer block. A
coating of thermal paste on the plate ensures the necessary thermal
contact between the surfaces. The contact area on the heat-transfer
block is shown in Figure
2.11.
2.12.
Quantity
1
1
4
1
1
1
1
1
5
1
2
1
3
1
1
1 pair
1
1
General Description 47