- 81 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. Technical Brief
When ALC sensor turn on, automatically controls brightness of the display backlight.
U502 : Backlight driver IC (BD6083) used I2C interface to MSM7200A
U503 : Luminance Sensor
3.16 Luminance Sensor
Luminance Sensor Schematic
Luminance Sensor Block Diagram
MSM7200A
U503
U502
(BD6083GUL)
ALS(BH1621FVC)
0
1
0
5
R
u
7
.
4
5
0
5
C
100K
R5
0
3
u
1
0
2
5
C
8
0
5
C
u
1
4.7k
R5
0
8
4.7k
R5
0
9
u
1
9
0
5
C
V
6
.
2
_
P
M
S
M
_
G
E
R
V
R
W
P
V
+
E
V
L
C
5S
0250
V
A
5
04
L
U
G
3
8
0
6
D
B
2
0
5
U
A3
F6
A1
F1
A6
3
E
2
E
4
E
3
D
5
E
2
F
6
E
1
E
3
F
1
C
3
B
2
D
4
D
1
D
4
C
2
C
4
B
2
B
5
D
1
B
2
A
5
F
4
F
6
D
6
B
A5
C6
B5
C5
A4
C1
N
C1
P
C2
N
C2
P
CP
G
N
D
P
C
T
A
B
V
T
U
O
V
1
T
A
B
V
2
T
A
B
V
1
D
E
L
2
D
E
L
O
I
V
3
D
E
L
B
T
E
S
E
R
4
D
E
L
L
C
S
5
D
E
L
A
D
S
6
D
E
L
N
I
M
W
P
W
D
N
G
D
E
L
S
A
I
B
S
S
N
E
S
S
O
1
O
D
L
D
N
G
S
O
2
O
D
L
2
C
G
O
3
O
D
L
1
C
G
O
4
O
D
L
T2
T4
T1
T3
G
ND1
E
V
L
C
5S
0250
V
A
5
06
C5
1
8
1
u
1u
C5
1
9
VA
5
0
7
E
V
L
C
5S
0250
V
8
.
2
_
D
D
V
A
_
A
G
V
u
1
1
2
5
C
u
1
2
2
5
C
V
8
.
1
_
D
D
V
D
_
A
G
V
V
8
.
2
_
F
A
_
M
A
C
_
M
P
E
V
L
C
5S
0250
V
A
5
09
E
V
L
C
5S
0250
V
A
5
10
9
0
9
0
0
0
0
H
B
F
S
5
0
5
B
F
3
0
5
U
1
0
2
8
8
3
0
Y
S
U
E
C
V
F
1
2
6
1
H
B
6
4
3
2
5
1
C
C
V
T
U
O
I
1
D
N
G
1
C
G
2
C
G
GN
D
2
V
8
.
2
_
D
D
V
O
I
_
A
G
V
u
1
8
2
5
C
E
V
L
C
5S
0250
V
A
5
11
K
0
1
2
0
5
R
L
C
S
_
C
2
I
_
L
B
A
D
S
_
C
2
I
_
L
B
N
E
_
L
B
_
D
C
L
P
_
A
T
A
D
_
P
_
I
D
D
M
M
_
A
T
A
D
_
P
_
I
D
D
M
P
_
B
T
S
_
P
_
I
D
D
M
M
_
B
T
S
_
P
_
I
D
D
M
2
D
E
L
W
3
D
E
L
W
4
D
E
L
W
6
D
E
L
W
R
W
P
_
D
E
L
W
5
D
E
L
W
1
D
E
L
W
M
W
P
_
D
C
L
r
o
s
n
e
S
e
c
n
a
n
i
m
u
L
P
M
U
P
E
G
R
A
H
C
T
H
G
I
L
K
C
A
B
D
C
L
d
e
t
e
l
e
d
0
.
1
.
v
e
R
B
v
e
R
B
v
e
R
2
1
8
0
9
0
Содержание Vodafone GM750
Страница 1: ...Service Manual Model GM750 Internal Use Only Service Manual GM750 Date September 2009 Issue 1 0 ...
Страница 225: ... 226 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 257: ... 258 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes ...