TM9100 Service Manual Circuit Descriptions 63
© Tait Electronics Limited August 2005
3 Circuit Descriptions
Introduction This section describes and illustrates the circuitry of the main board and the
control-head board.
The main board is decided into the following circuitry modules:
■ transmitter
■ receiver
■ frequency synthesizer (including FCL)
■ CODEC and audio
■ power supply
■ interface
■ digital board
Figure 3.1 gives an overview of the of the circuitry modules of the main
board and shows how they are interconnected.
Sample Schematics For up-to-date schematics refer to the relevant PCB information.
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