Tait TM8100 mobiles, Service Manual

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TM8100/TM8200 Service Manual Circuit Descriptions 65
© Tait Electronics Limited November 2007
3 Circuit Descriptions
Introduction
This section describes and illustrates the circuitry of the main board and the
control-head boards.
The main board is divided 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 (refer to
“Associated Documentation” on page 6 ).