Service manual

8
.
S
c
h
ema
ti
c
Di
agrams
8.1. DC POWER
AUIO IN/OUT GND DIGITAL GND
Back Light circuit
Initial pull up
DC INPUT
BACK_LIGHT PWM
TURN OFF SIGNALS
Hi Enable
Hi
Enable
VDIM=5V IS THE BRIGHTEST
GNDA
IADJ
PWM0
PWM0
PWM1
PWM1
BL_ON_OFF
PWR_GND
BL_ON_OFF
IADJ
POWER_EN
POWER_EN
PWR_GND
PWR_ON_OFF
PWM0 3
PWM1 3
PWR_ON_OFF 3
VCC
VCC
GNDP
12V_PANEL
5VSB
GNDP
GNDP
VCC
GNDP
12V
GNDP
5VSB
GNDP
5VSB
GNDP
H100
HOLE/GND
2
3
4
5
9
8
7
6
1
2
3
4
5
9
8
7
6
1
H103
HOLE/GND
2
3
4
5
9
8
7
6
1
2
3
4
5
9
8
7
6
1
R106
1K
R107
10K
L236
R121/0805 6A
C806
0.1U
H105
HOLE/GND
2
3
4
5
9
8
7
6
1
2
3
4
5
9
8
7
6
1
E
B
C
SOT
23
Q102
MMBT3904
1
3
2
R103
4.7K
C104
1U
R102
10K
L234
R121/0805 6A
+
C805
4.7uF/50V
+
C105
1000U/16V/LowESR
C107
0.1U
L218
R121/0805 6A
R110
4.7K
H101
HOLE/GND
2
3
4
5
9
8
7
6
1
2
3
4
5
9
8
7
6
1
R111 1K
E
B
C
SOT
23
Q103
MMBT3904
1
3
2
E
B
C
SOT
23
Q101
MMBT3904
1
3
2
R108 0
H104
HOLE/GND
2
3
4
5
9
8
7
6
1
2
3
4
5
9
8
7
6
1
R112
4.7K
P804
2.0MM
1
2
3
4
5
6
7
8
9
10
11
12
+
C106
1000U/16V/LowESR
L217
R121/0805 6A
H102
HOLE/GND
2
3
4
5
9
8
7
6
1
2
3
4
5
9
8
7
6
1
R109
4.7K
R101
10K
P805
2.0MM
1
2
3
4
5
6
7
8
9
10
11
R113
(NC)47K
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