- 99 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
LGE Internal Use Only
TEST POINT
Figure 4.10
U101
U204
R227
R22
6
R22
8
R220,R224.FB206,L205
FB208
FB207
J201
CIRCUIT
4.11.1 Headphone(3.5Ø Trouble)
TP1
100nH
L210
1
0
9
6
0
0
0
E
J
N
E
o
t
1
0
7
6
0
0
0
E
J
N
E
m
o
r
f
e
g
n
a
h
C
)
8
2
7
0
8
0
:
r
e
r
u
t
c
a
f
u
n
a
M
.
f
f
i
d
y
l
n
o
(
)
A
/
N
(
T
E
S
D
A
E
H
i
h
p
5
.
3
i
h
p
5
.
3
D
S
E
r
o
f
)
4
0
3
D
(
S
V
T
D
D
A
)
8
1
9
0
8
0
(
DNI_DIODE_1006
D209
diode
1
3
1
5
R
18p
C254
H
n
0
0
1
9
0
2
L
220K
R226
0
2
3
2
2
R
S
A
I
B
C
I
M
S
H
0
0
8
1
6
0
2
B
F
0
0
8
1
8
0
2
B
F
C250
39p
L211
100nH
u
1
.
0
8
5
2
C
1
5
C
C
V
+
N
I
V
3
4
-
N
I
V
B
P
O
N
-
X
G
M
1
9
2
7
V
M
L
4
0
2
U
D
N
G
2
T
U
O
4
7
1
0
-
0
-
H
P
-
A
J
K
1
0
9
6
0
0
0
E
J
N
E
1
0
2
J
0
0
8
1
5
0
2
B
F
D211
ECTH0005601
298D106X0010M2T
10u
C247
p
0
0
1
8
4
2
C
J
0
1
R
5
0
0
1
K
H
H
n
0
0
1
5
0
2
L
9
0
0
5
0
0
0
H
C
L
E
T
X
E
V
_
3
9
V
2
39p
C251
0
2
2
R
K
5
.
1
27p
C257
C253
DNI
C252
DNI
0
0
8
1
7
0
2
B
F
u
1
.
0
4
4
2
C
R227
10K
D210
K
2
.
2
4
2
2
R
O
I
P
G
_
T
E
D
_
K
O
O
H
N
_
C
I
M
_
S
H
D
N
G
_
O
I
D
U
A
D
N
G
_
O
I
D
U
A
1
_
T
N
A
_
M
F
P
_
C
I
M
_
S
H
5
.
3
_
T
E
D
_
C
I
M
P
H
5
.
3
_
T
E
D
_
K
C
A
J
L
_
O
S
H
R
_
O
S
H
TP1