Specifications

CA1 Course Notes
Sharp Electronics (UK) Limited
CE Technical Support Group Page 49
Block Diagram of the CA1 Chassis
A block diagram of the CA1 chassis is shown below. It can be clearly seen from this that the sound
processing and teletext IC’s have been deleted. All audio decoding is carried out within IC201 and the
teletext function ( 37DT25H and 51DT25H ) is carried out by the masked microprocessor ( IC1001 ).
Unlike the CA10, the power supply is kept running in the standby mode and it is only the secondary
voltages that are controlled to bring the receiver out of standby.
Figure 42 : Overall Block Diagram of the CA1 Chassis