Tait TM8000 Series, Руководство по обслуживанию

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TM8100 Mobile Radio Service Manual General Description 37
May 2004 © Tait Electronics Limited
Control-head Board Figure 2.4 and Figure 2.5 show the interior of the control head. The
control-head board is screwed to a space-frame that is fitted inside the
front panel. (Different boards are required for the one- and two-digit-
display control heads.) The control-head loom connected to the board
requires a female-to-female adaptor to allow connection to the radio
body.
Figure 2.4 also shows the separate circuit board mounted on the
control-head board when a dynamic or concealed microphone is used.
Space-frame, Keypad
and Display
The space-frame fits over the speaker, a keypad, and the LCD for the
display. The keypad is designed so that pressing any key results in contact
being made with the control-head board. There are four light pipes in
the keypad for the LEDs associated with the function keys. Light pipes
for the three
STATUS
LEDs, however, are moulded into the front panel.
The LCD fits in a recess in the front panel. Electrical contact between
the LCD and the control-head board is ensured by two elastomeric strips
held in place by the space-frame.
Figure 2.3 Exterior of a control head with UI
2
3
4
1
ACCESS TO
MICROPHONE
CONNECTOR
SPEAKER GRILLE