ViewSonic P774B-2NT Series Service Manual page 38

DEGAUSSING
C.K.T
Q913
RY901
FROM
IC101 CPU
POWER
ON/OFF
SWITCH
LINE
FILTER
AC INPUT
90~264V
9-1 BLOCK DIAGRAM (SMPS)
RECTIFIED
&
SMOOTHED
START
RECTIFIED
C.K.T
R939 D912
SMOOTHED
Vcc
4
D
1
IC901
STR-5643D
S
2
3 5
OCP/FB
H-SYNC
C.K.T
OUTPUTS
RECTIFIED
T901
&
POWER
Transformer SMOOTHED
& L906
CHOCK
COIL
Q911
POWER
MOSFET
R930
B+ PWM
R929
CONTROL
IC401
Q912,Q920
37
12.3V
Q909
Q910
6.3V
Q907
Q908
32 31
OUTPUTS
RECTIFIED
&
SMOOTHED
B+
(60~145V)
T402
FBT
12V
6.3V
Q904
5V
5
24.5KV
80V
-12V
G1