Service manual SC-150
-67-
2
4
3
DRAIN
I801
M
O
F
S
ET
AND
CONTROL
IC
1
MAIN
AC
VOLTAGE
I804
OPTO
COUPLER
I823
3.3V
REGULATOR
I703
IR
RECEIVER
FRONT
MAS
K
BUTTONS
I810
CONTROLLED
RECTIFIER
S
W
ITCHING
CIRCUIT
T
801
SM
P
S
T
R
A
N
S
I501
MAIN
IC
OCP
FB
D801...D804
GRAETZ BRIDGE
16
D821
I810
controlled
rectifier
HIGH
C841
C840
R713
1
3
1
2
61
64
56
54
7
63
CONDUCTING
IR
IN
com
supply
voltage
KEY
IN
POWER
R888
C888
Q809
Q810
Q811
D811
D825
R810
L801
D806
C808
SW801
P
O
WER
SWITCH
C850
R806
8
4
3
1
2
R870
HIGH
LOW
LOW
CONDUCTING
CONDUCTING
AROUND
6V
d
c
AROUND
3.3Vdc
Fig
:
Power
supply
operation
in
stand
-
by
mode
Summary of Contents for CHASSIS : SC-150 Model : DSC-3220E
Page 35: ...Service manual SC 150 34 Block diagram TDA6107Q...
Page 44: ...Service manual SC 150 43 5 Circuit description 5 1 Block diagram...
Page 62: ...Service manual SC 150 61 5 9 2 2 STR F6654 oscillating operation...
Page 82: ...Service manual SC 150 81 8 1 PCB MAIN...
Page 83: ...Service manual SC 150 82 8 2 PCB UNION...
Page 84: ...Service manual SC 150 83 9 1 Schematic Diagram MAIN...
Page 85: ...Service manual SC 150 84 9 2 Schematic Diagram UNION...
Page 86: ......