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:
â– transmitter
â– receiver
â– frequency synthesizer (including FCL)
â– CODEC and audio
â– power supply
â– interface
â– 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.