Power Block Diagram - Sharp TU-GA1U-S Service Manual

TU-GA1U-S
TU-GAD

POWER BLOCK DIAGRAM

AC POWER SUPPLY
H
CN701
AC(L)
AC(N)
G
F
P1790
E S-VCC +15V
S-VCC +15V
AC_DET
UR+10V
UR+10V
UR+10V
PS_ON
BU+5V
P1791
S-VCC GND
S-VCC GND
O.V.P.
D
UR GND
UR GND
UR GND
BU GND
C
B
A
1 2
AVC MAIN POWER
F701 L701 L702
1 LINE LINE
2 FILTER FILTER
AVC SUB POWER
PI
1
2
3 L1701 D1701
4 CHOKE COIL 32PIN VCC
5
6
7 3PIN PVCC1(CH1,2)
8 8PIN PVCC2(CH3,4,5)
PJ
1
2
3
4
5
6
7
3 4
L705 F702 D704
LINE BRIDGE
FILTER RECTIFIER
IC701
AC-DC
CONTROLLLER
RY701
Q701,702
RELAY DRIVE
TRANSISTOR
D708 L703 L704
BRIDGE CHOKE COIL PFC CONVERTOR
RECTIFIER TRANS
IC702
PFC CONTROL
IC
PC705
AC DETECTOR
IC1706
UR+10V L1707
REGULATER CHOKE COIL
OUT5(UP) 12PIN
OUT4 9PIN
IC1701
5CH SWITHING REGULATER
CONTROLLER
4CH DOWN OUT3 7PIN
1CH UP
OUT2 4PIN
OUT1 2PIN
STB1 48PIN
ON/OFF
STB2,3 47PIN
LOGIC
STB4 46PIN
STB5 45PIN
5 6 7
52
T701 L901 IC901,902
SWITCING CHOKE COIL BU+5V
TRANS REGULATER
D901
PC701
VOLTAGE
FEED BACK
PC702 Q901
RELAY DRIVE PS_ON
CONTROL
D709
F703 Q706
Q705 TEMPERATURE FUSE MOS-FET
MOS-FET
IC703
AC-DC
CONTROLLLER
Q905,906
AC DETECTOR
D913 TRANSISTOR
(UR+10V)
(UR+35V)
ZD1708
D1711 ZD1705
D1712
Q1705
MOS-FET
Q1704
MOS-FET
Q1703 L1705
MOS-FET CHOKE COIL
D1706
Q1702
MOS-FET
D1717
Q1701 L1703
MOS-FET CHOKE COIL
D1702
IC951 L951
DC-DC CHOKE COIL
CONVERTER
D952
Q951
ON/OFF
CONTROL
IC952 L952
DC-DC CHOKE COIL
CONVERTER
D956
Q954
ON/OFF
CONTROL
8 9
(BU+5V)
(PS_ON)
T702
SWITCING
TRANS
PC703
VOLTAGE
FEED BACK
PC704
O.V.P.
PROTECTOR
L1706
CHOKE COIL
D1708
L1704
CHOKE COIL
D1704
ZD951
D953
ZD952
D957
10