Receiver Trouble - LG B2050 Service Manual

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4 . TROUBLE SHOOTING

4.11 Receiver Trouble

TEST POINT
CIRCUIT DIAGRAM
A
O
U
A
O
U
T
A
O
U
T
A
O
U
T
A
O
U
T
A
O
U
T
A
O
U
A
O
U
T
J
5 1
T
1
P
K
5 1
1
N
R
1 1
2
P
1
T
1 1
2
P
2
T
9
2
N
1
R
9
2
N
2
J
6 1
T
3
P
K
6 1
3
N
C
2
G
I P
C
1
3 4
C
1
4 4
9 3
p
9 3
p
R
1
1 1
4
7 .
C
1
9 3
9 3
p
R
1
4 1
4
7 .
H
E
A
D
S
E
T
_
S
P
K
_
P
H
E
A
D
S
E
T
_
S
P
K
_
N
C
1
0 4
9 3
p
R
N I
G
T
O
N
E
B V
T A
2 U
2 0
2 C
0 2
N
A L
4 S
8 6
1
u 0
1
+ V
2
S
K P
P _
N
1 O
3
O C
1 M
4
S
K P
S _
L E
I
1 N
5
R
C E
P _
N
1 C
- 78 -
R
E
C
_
P
R
E
C
_
N
C
1
1 4
9 3
p
2 C
9 9
A N
M 4
2 R
C
2 N
0 0
1
0 1
S
K P
N _
N
2 O
2
9
O C
2 M
8
2 C
8 9
I
2 N
A N
7
R
C E
N _
N
2 C
6
G
D N

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