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4 . TROUBLE SHOOTING
4.10 Earphone Trouble
TEST POINT
CIRCUIT DIAGRAM
V 2
_ 8
E V
T X
2 U
5 0
2 C
7 2
N
A L
4 S
8 6
M 4
2 R
1
u 0
1
+ V
N
2 O
2
R
D A
O I
S _
K P
R _
N
1 O
O C
2 M
2 R
2 3
3
O C
1 M
I
2 N
A N
4
R
D A
O I
S _
L E
I
1 N
N
2 C
5
H
A E
S D
T E
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K P
P _
N
1 C
G
D N
C
2
0
3
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E
A
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9
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8
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2 .
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3
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3 .
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V
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3
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2
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2 .
u
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1
4
7 .
R
2
1
2
4
7 .
R
2
1
3
0
L
2
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1
2
2 .
u
H
2
1
5
4
7 .
C
2
1
7
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2
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6
3
9
p
1
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- 76 -
2
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8
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2
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1
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2
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2
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1
0
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0
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T -
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2
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6
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2
1
8
V
A
2
0
2
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A
2
0
3
V
A
2
3
9
p
3
9
p
C
J200
U205
U200
U201
2
V
5
_
J
A
C
K
0
N
C
P
5
6
3
Q
2
5
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1
4
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C
3
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8
1
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1
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1
6
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8
4
7 .
u
H
L
O
S
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T
O
H
E
A
D
S
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T
J
A
C
K
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