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- 65 -<br />
D801...D804<br />
GRAETZ BRIDGE<br />
SW801<br />
POWER SWITCH<br />
MAIN AC VOLTAGE<br />
2 4<br />
3<br />
DRAIN<br />
I801<br />
MOFSET AND<br />
CONTROL IC<br />
T801 SM PS TRANS<br />
L801<br />
OCP<br />
FB<br />
1<br />
D806<br />
C850<br />
8<br />
R806<br />
4<br />
3<br />
16<br />
C808<br />
D821<br />
I804<br />
OPTO<br />
COUPLER<br />
I810<br />
controlled rectifier<br />
D825<br />
R810<br />
1<br />
2<br />
HIGH<br />
R870<br />
CONDUCTING<br />
CONDUCTING<br />
CONDUCTING<br />
C841<br />
I810<br />
CONTROLLED<br />
RECTIFIER<br />
SWITCHING<br />
CIRCUIT<br />
D811<br />
Q811<br />
Q810<br />
HIGH<br />
Q809<br />
I501<br />
MAIN<br />
IC<br />
C840<br />
POWER<br />
63<br />
LOW<br />
AROUND<br />
6V dc<br />
IR IN 64<br />
µcom<br />
supply<br />
voltage<br />
KEY IN<br />
LOW<br />
61<br />
56<br />
54<br />
7<br />
2<br />
C888<br />
1<br />
AROUND<br />
3.3Vdc<br />
I703 IR<br />
RECEIVER<br />
FRONT<br />
MASK<br />
BUTTONS<br />
R888<br />
I823 3.3V<br />
REGULATOR<br />
1<br />
R713<br />
Fig : Power supply operation in stand - by mode<br />
3
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