akira CT-14CQS5CPT, Service Manual

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Model no.:CT-21CQS5CPT.doc
version 1.0
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3 VERTICAL SCAN OUTPUT STAGE CIRCUIT
TDA4863AJ/TDA4864AJ
4.3.1 FEATURES
TDA4863AJ:Output current up to 3 A (p-p)
TDA4864AJ: Output current up to 2.5A (p-p)
3.2 GENERAL DESCRIPTION
The TDA4863AJ and TDA4864AJ are deflection boosters for use in vertical deflection
systems for frame frequencies up to 200 Hz.
The TDA4863AJ or TDA4864AJ needs a separate flyback supply voltage, so the supply
voltages are independently adjustable to optimize power consumption and flyback time.
For the TDA4863AJ or TA4864AJ the flyback supply voltage will be generated internally
by doubling the supply voltage and therefore a separate flyback supply voltage is not
needed.
3.3 Block diagram of TDA4863AJ and TDA4864AJ
PIN SYMBOL DESCRIPTION
1 VP1 positive supply voltage 1
2 VP3 flyback generator output
3 VP2 supply voltage 2 for vertical output
4 GND ground or negative supply voltage
5 V-OUT vertical output
6 INN inverted input of differential input stage
7 INP non-inverted input of differential input stage