Haier LT32A1, Service Manual, Page: 55 / 144

55
10. Schematic Diagram
10.1 Main Board
LT26A1 715G3693M01000004K/LT32A1 715G3693M01001004K
3) Power 1
C7833
NC
1 2
FB101 120R/6000mA
3
2
1
Q767
NC
R7
9
08
NC
R7907
0R05 1/4W
+
C1
14
330uF
10V
+5V_STB
+16V/+24V +16V/+24V_SW
C139
1U 10V
R7909
NC
Control DV11 and DV33 Sequence
+
C7831
NC
5V_SW ON/OFF):
Norm al: High
Stand_By: Low
+16V TO +16V_SW BY OPWRSB
FB
1
EN
2
OCSET
3
VCC
4
OUTPUT
5
OUTPUT
6
VSS
7
VSS
8
U105
AP1538SG-13
OPWRSB
Norm al: High
Stand_By: Low
+5V1) TO +5V_SW BY OPWRSB
+
C125
470uF/16V
+
C149
470UF 25V
OPWRSB
C7832
NC
C146
NC/10U 10V
1 2
FB100 120R/6000mA
R1
3
5
6K8 1/
10
W
5%
+
C120
NC/470uF/10V
R7893
1K 1/10W
DV33SB
BRIGHT_ADJ:
Normal:Max:+3V3, Min:0V
Stand_By:0V
DC POWER INPUT
INVERTER_ON_OFF:
Normal: High
Stand_By: Low
BRIGHT_ADJ
INVERTER_ON_OFF
OPWRSB STANDBY
OPWRSB
R123
1.5KOHM 1/10W
Vout =1.1V , R108 = 620, R109=1.5K
1
T
P
100
Vout = 0.8 * (1+R108/R109)
C128
NC
C148
0.1uF 50V
C7958
0.1uF/16V
STANDBY
R
1
39
62
0OH
M
+
-5% 1/
10W
FB104 300 OHM
R131 0R05 1/4W
R125
NC/2.2 OHM 1/10W
C147
NC
S
1
S
2
S
3
G
4
D
8
D
7
D
6
D
5
Q105
NC
D102
SR34
1
T
P
104
C145
NC/0.1uF 50V
1
T
P
105
1
T
P
103
R1
3
8
10
K
1/
10
W
R
1055
N
C
/10K 1/
16
W
5%
1
T
P
101
L102
27uH
C144
0.1uF 50V
R
1054
N
C
/1
0K
1/
16
W
5%
C123
100N 16V
Q772
NC/MMBT3904
R
1056
10
K
1
/1
6W
5
%
1
T
P
102
C129
NC
D
1
D
2
D
3
G
4
S
5
D
6
D
7
D
8
Q104
SI5441DC
+5V +5V_STB
+5V_SW
DV11
+5V_STB
+12V
+16V/+24V
+5V
+5V_SW DV33SB
+5V_STB
OPWRSB 6
INVERTER_ON_OFF 16
BRIGHT_ADJ 16
INVERTER_ON_OFF
BRIGHT_ADJ
1
2
3
4
5
6
7
8
9
10
11
12
CN100
CONN
1 2
FB102 NC/220R/2000mA
1 2
FB103 NC/220R/2000mA
+12V
+16V/+24V
R108 NC
C7804
4.7UF 10V
3
2
1
Q101
BC847C
R
121
47K
1/
1
0
W
R119
2.7K 1/10W
DV11
C
121
4.
7
U
F
10V
R130
7K5 1/10W 5%