ViewSonic Q51 series Service Manual page 15

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5.3 TRANSISTOR & DIODE CIRCUIT
LOCATION
D901 ~ D904
D918, D919
D921
D922
D923
D925
D929
Q907, Q908
Q909, Q910
Q912, Q920
Q913
Q921
Q401
Q460
Q408
Q410
Q404, Q405
Q406
Q705
CIRCUIT FUNCTION DESCRIPTION
BRIDGE RECTIFIER FOR AC SOURCE
RECTIFIER FOR OUTPUT VOLTAGE
RECTIFIER FOR OUTPUT VOLTAGE
RECTIFIER FOR OUTPUT VOLTAGE
RECTIFIER FOR OUTPUT VOLTAGE
RECTIFIER FOR B+ OUTPUT VOLTAGE
B+ FEED BACK RECTIFIER FROM F.B.T PULSE
USE FOR OFF-MODE TO CUT-OFF 6.3V SUPPLY VOLTAGE
USE FOR OF- MODE TO CUT-OFF 14.2V SUPPLY VOLTAGE
PUSH-PULL TOPOLOGY TO DRIVE Q911
DEGAUSSING SWITCHER TRANSISTOR
5V REGULATOR TRANSISTOR
TURN-ON AT POWER ON/OFF AND CHANGE MODE TO PROTECT HOR.BLOCK
HOR. DRIVER TRANSISTOR
AS A SWITCHER FOR HORIZONTAL S CORRECTION CKT
HORIZONTAL S CORRECTION CONTROL MOSFET
AS DIFFERENTIAL AMP. TO DRIVE Q406
DARLINGTON TRANSISTOR FOR H-SIZE CONTROL
G1 CONTROL CKT
15

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