6.3 The block diagram:
6.4 Function:
a. The input voltage AC 90 ~ 240 through line filter to the power board , after main
switch is on then power board generate 5 volts to VIF board. The VIF board after
receiving 5 volts then from CN connector send signal(5 volts) to power
board .Power board generates 5 volts to DIF and VIF .When VIF receives the 5
volts ,then generates 5 volts to power board through CN connector(pin1 ,pin6) ,
and it means that DIF has received 5 volts already.
b. When power on(key-pad or receiver),the VIF send VCC_ON signal to power to
start Vcc and Vf voltage through CN connector(pin2).
c. The VIF sends HV_ON signal to power board to start high voltage Vs , Vxg , Vw
through CN connector(pin4).
d. At the same time the signal from VIF to DIF for signal processing , then through X
/ Y / W board to start the screen.
7
Introduction of PDP Circiut board