Daewoo DVN-14F6N - Power circuit (Power supply circuit); Power Circuit Overview and Operation

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2. Power circuit (Power supply circuit)
2-1. Abstract And Function
It selects SMPS(SWITCHING MODE POWER SUPPLY) which is possible to put in from AC 108V~132V/60Hz with
SANKEN Ic STR-S5707 and supply the stable voltage which each circuit needs.
The voltage which electric resources circuit supplies is followed.
2-2. I801 STRS-5707
1) BLOCK DIAGRAM
NO.SUPPLY ELECTRIC
SOURCE SUPPLY CIRCUIT APPLICATION
RESOURCES
TRANS SECOND RECTIFIED
FBT
FBT B
+
1 DC 125V VOLTAGE
PIF
For channel
D814 selecting(33V)
2
DC 12V REGULATOR IC
SERVO circuit
For driving DRUM,
(MOTOR 12V) I805(PQ12RF11) CAPSTAN MOTOR
TUNER For channel selecting(9V, 5V)
3
DC 12V REGULATOR IC IF AMP circuit IF amp. circuit(9V), V/SIF(5V)
(ON/OFF 12V) I804(PQ12RF11) AUDIO circuit For driving AUDIO I/O circuit
VIDEO circuit For driving VIDEO, ANALOG circuit
4
DC 6.0V REGULATOR IC SERVO, TIMER IC For driving SYSCON, TIMER,
(EVER 5.3V) I803(KIA7806) SYSCON IC circuit SERVO circuit
TRANS SECOND
5 DC 14V RECTIFIED VOLTAGE AUDIO circuit AUDIO AMP. B
+
D813
6 DC 9V
REGULATOR IC
DEFLECTION circuit
VERTICAL IC B
+
I806 (KIA7809) H. VCC
START UP
OVP
LA TCH
PROPOTONAL
DRIVE
OSC
OCP
PRB RBG
T.S.D
SENS
R6
R7 R8 R9
R1
C1
R2
C2
C4
R5
INH
C3
R4
R3
Trl
B
3
C
GND
OCP
SINK
DRIVD
Tr2
PNP
+2D
7
9
VIN
1
4
8
5
6
2