TM8100 Mobile Radio Service Manual General Description 43
May 2004 © Tait Electronics Limited
Parts of Radio Body
Figure 2.8 to Figure 2.12 illustrate the parts of the radio body. Details of
the parts are summarised in Table 2.3. Figure 2.8 shows the two main
assemblies that make up the radio body — the lid assembly and the
chassis assembly. Also shown are the cover for the radio body and the
control-head seal detached from the chassis. The cover label shown in
the figure is permanently fixed to the cover. The screws secure the lid to
the chassis. The parts of the lid assembly and chassis assembly are shown
in the remaining figures.
Lid Assembly Figure 2.9 and Figure 2.10 show the parts of the lid assembly. Any
internal options board is mounted inside the lid, and this case is illustrated
in Figure 2.10. The main seal shown in both figures is an O-ring that
fits in a groove in the wall of the lid. This seal ensures that the lid is
properly sealed to the chassis. Figure 2.9 also shows the bung that seals
the aperture provided in the lid for an external options connector.
Figure 2.10 shows a typical large options board. A cover seal is supplied
for the board’s external options connector. The options loom connects
the options board to the internal options connector on the main board.
The latter connector is indicated in Figure 2.12.
Chassis Assembly Figure 2.11 and Figure 2.12 show the parts of the chassis assembly.
Illustrated in Figure 2.11 are the chassis and the main board, digital
board, and heat-transfer block of the main-board assembly. Also shown
are the bung for the auxiliary connector and the seal needed for the RF
connector. The screws secure the main-board assembly in the chassis.
Figure 2.12 shows the heat-transfer block detached from the main board.
All the parts associated with the block are illustrated; the principal parts
are inner and outer foam seals needed for the auxiliary connector, and a
rubber seal for the power connector. The lock washer and hexagonal nut
are supplied as integral parts of the RF connector. The screws secure the
heat-transfer block to the main board.
Table 2.2 Parts of the blank control head
Index Reference IPN Description Quantity
1 Figure 2.6 316-06786-xx Front panel of blank control head 1
2 Figure 2.6 312-01095-xx Label with Tait logo 1
3 Figure 2.6 354-01043-xx Lock-nut for programming connector 1 pair
4 Figure 2.6 362-01108-xx Cover seal for programming connector 1
5 Figure 2.6 347-00011-xx UNC 4-40 x 3/16-inch pan Pozi screw for cover seal 2
6 Figure 2.7 219-02902-xx Control-head loom for blank control head 1
7 Figure 2.7 362-01111-xx Foam seal for programming connector 1
Note
The characters xx in an IPN stand for the issue number. Items in the control head will always be the latest
issue at the time the control head is manufactured.
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