Haier LET32/40T900, Service Manual

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77
5) Power-2
+12V
R754
+12V/5V
R752
DV33
AV12
PANEL_VCC_ON/OFF(GPIO_11)
Normal:High
Standby:Low
NC
R761
12K 1/16W 1%
DV33SB
DV33SB 6,7,9,11,13,14
YES
YES
AV33
GPIO Contrl
PANEL_VCC
NC
AV33 4,6,13
Panel VCC=12V or 5V
DV33 4,6,7,8,9,13,14,15,16
DV33 TO AV12
Vo=1.25 x (1+1R/120R) = 1.25V
+5V_TUNER 17
PANEL_VCC_ON/OFF
+5V_TUNER
1.2(1+(37.7K/12K))=4.97V
+5V_SW to +5V_TUNER
+5V_SW
PANEL_VCC_ON/OFF 6
PANEL_VCC_ON/OFF
+5V_SW 4,7,10,11,13,14,15
R766
10K 1/10W 5%
1 2
FB708
220R/2000mA
+5V_STB 4,7,14
VIN
3
VOUT
2
GN
D
1
4
4
U751
G903T63UF
R757
1R 1/10W 5%
+
C758
33UF 10V
D
1
D
2
D
3
G
4
S
5
D
6
D
7
D
8
Q751
AON4421
R751 15KOHM 1/10W
C760
1UF16V
VEN
1
VIN
2
VO
3
ADJ
4
GND
5
GND
6
GND
7
GND
8
U755
G965-25ADJPIUF
C762
10uF 16V
R754
0R05
R764
10K 1/10W 5%
+5V_SW
C753 0.22UF16V
R755
10K 1/10W 5%
C754
4.7UF 10V
R752
NC/0R05 4A 1/4W
C756
NC/10U 10V
R753
5.1KOHM +-5% 1/10W
+ C759
33UF 10V
C757
1UF16V
C761
10U 10V
+ C752
100uF 16V
R758 7K5 1/10W 5%
C769
10uF 16V
+12V/5V 4,9
VIN
3
VOUT
2
G
ND/A
D
J
1
U704 G1117T43Uf
R756
120R 1/10W 1%
Q752
BC847C
+5V_STB DV33SB
PANEL_VCC
+12V/5V
AV12
DV33
+5V_STB TO DV33SB
+5V_STB
+5V_SW
+5V_TUNER
+5V_STB
GND 4,6,7,8,9,10,11,12,13,14,15,16,17
1 2
FB752
220R/2000mA
R753 R755
0
10K
33K
R758
7K5
22K
5K1
PANEL_VCC 14
R760
33K 1/16W 1%
R759
3K
9 1
/16
W
1
%
PANEL
VCC
AV12 6,15
+5V
GND