Haier LET32/40T900, Service Manual

Page: 76 / 105

76
10. Schematic Diagram
10.1 Main Board
715G4589M01000004K
4) Power-1
Vout=0.827x (1+12.3K/33K) = 1.13V for DV11
VCCK
EU MT5365 - 2 LAYERS for small size 193X225
OPWRSB 6
SMD/0402
SMD/0402
R709
NC/10K 1/16W 5%
SMD/0402
BRIGHT_ADJ 14
DV33
INVERTER_ON_OFF 14
OPWRSB
SMD/0402
AV33
C707
100N 50V
BRIGHT_ADJ
R/A 2.5 MM
311GW250B13ABX(XINYA)
STB_PWR5V
C723
NC/22uF 10V
ON OFF
GPIO Contrl
DV33
+5V_STB
C711
100N 50V
STANDBY
Normal:High
Standby:Low
BRIGHT_ADJ
C732
NC/22uF 10V
PWR_ON
S
1
S
2
S
3
G
4
D
8
D
7
D
6
D
5
Q705
NC/AO4435
+5V_SW 5,7,10,11,13,14,15
+24V_16V
DV33 5,6,7,8,9,13,14,15,16
+24V_16V 8,9
AV33 6,13
ON OFF
STB_PWR5V 9
R717
22K 1/16W 5%
INVERTER_ON_OFF
DDRV 6,12
INVERTER_ON_OFF
Normal:High
Standby:Low
+12V/5V 5,9
INVERTER_ON_OFF
VCCK 6
DV33SB 6,7,9,11,13,14
DV33SB
PWR_ON
SMT
BRIGHT_ADJ
Normal:PWM or DC 3V3 Max
Standby: 0 V
+5V_STB 5,7,14
STB_PWR5V
PWR_ON
R716
2K2 1/16W 5%
DV33SB
R735
NC/10K 1/16W 5%
+12V/5V
GND
R728
NC/1K 1/16W 5%
DV11
Normal:High
Stand_By:Low
C731
NC/22uF 10V
R701
NC/-5% 1/8W
R718
300R 1/10W 1%
VIN
3
VOUT
2
GN
D
/A
D
J
1
U703
G1117T43Uf
R720
12K 1/10W 1%
R734
NC/1K 1/16W 5%
C709
1UF16V
Q703
BC847C
R707
NC/10K 1/16W 5%
C713
22uF 10V
Vout=1.25x (1+27/120)= 1.53V
C720
3300pF 50V
R719
NC/22K 1/16W 5%
C724
10uF 10V
L701
1.5UH
TP
7
06
C734
22uF 10V
D
1
D
2
D
3
G
4
S
5
D
6
D
7
D
8
Q702
AON4421
R730
100K 1/10W 1%
R723
NC/10K 1/10W 5%
R703 2K7 1/16W 5%
VIN
1
VIN
2
GND
3
GND
4
AGND
5
VSNS
6
COMP
7
RT/CLK
8
SS
9
PH
10
PH
11
PH
12
BOOT
13
PWRGD
14
EN
15
VIN
16
Pw
P
d
17
U701
TPS54319RTE
TP
7
03
C716
100N 50V
C722
3300pF 50V
C721
22uF 10V
R704
33K 1/10W 5%
R731
7
K
5 1/
10
W
5%
1 2
FB707
220R/2000mA
C725
10uF 16V
R725
NC/7K5 1/10W 5%
C729
22uF 10V
C728
NC/4.7uF 50V
DV11
R736
180
K
1/
10W
1
%
R737
18
0K
1/
10
W
1%
R708
NC/15K 1/16W 5%
R702 100R 1/16W 5%
1
2
3
4
5
6
7
8
9
10
11
12
CN701
CONN
R732
0R05 1/4W
TP
7
07
TP
7
05
PWR_24_16V TO +24_16V BY STANDBY (Sound)
R721
33K 1/10W 1%
TP
7
02
1 2
FB705
220R/2000mA
C719
10uF 10V
C717
100N 50V
R727
NC/5K1 1/10W 1%
C726
100N 16V
C705
100N 16V
R712
120R 1% 1/10W
VIN
1
VIN
2
GND
3
GND
4
AGND
5
VSNS
6
COMP
7
RT/CLK
8
SS
9
PH
10
PH
11
PH
12
BOOT
13
PWRGD
14
EN
15
VIN
16
Pw
Pd
17
U702
TPS54319RTE
R714
4K7 1/16W 5%
C715
100N 50V
C703
1UF16V
R705
1K 1/16W 5%
R706
22KOHM 1/10W
1 2
FB706
220R/2000mA
C708
10U 10V
R724
0R05 1/4W
R715
7K
5 1/
10W
5
%
R722
300R 1/10W 1%
R742
N
C
/1
0K
1/
10
W
3
2
1
Q704
NC/BC847C
C718
100N 50V
C735
10nF 50V
LDO linear regulator
R729
33K 1/10W 1%
C727
NC/1uF 50V
L702
1.5UH
+ C730
220UF 16V
1 2
FB701 120R/3000mA
+5V_STB TO +5V_SW BY DV11
+
C702
470UF 10V
C714
22uF 10V
R726
27R 1/10W 1%
TP
7
04
C733
10nF 50V
3
2
1
Q701
BC847C
C701
NC/22U 10V
TP
7
01
1 2
FB702 120R/3000mA
+5V_STB
+12V/5V
+5V_SW
PWR_24V_16V
DDRV
DV33SB
+5V_STB STB_PWR5V
+5V_STB
PWR_ON
PWR_24V_16V +24V_16V
DDRV
AV33
DV33
DV11
+5V_STB
DV33
+5V_SW
OPWRSB
Normal:Low
Standby:High
+5V_SW
VCCK
GND 5,6,7,8,9,10,11,12,13,14,15,16,17
DC POWER INPUT
SMD/0402
Vout=0.827x (1+100.3K/33K) = 3.34V for DV33 & AV33
OPWRSB