Only For Training And Service Purposes - LG GM750 Service Manual

A N T 1 0 6 A N T 1
C 1 0 3
D
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A N T _ S
A N T _ S
A N T _ S
A N T _ S
D C S _ P
D C S 1 ( 7 1 0 1 -
P C S 1 ( 8 5 0 1 -
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G S M 8 5 0 8 ( 2
G S M 9 0 0 8 ( 8
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Only for training and service purposes

0 5
A N T 1 0 1
R 1 0 3
D I N R 1 0 1
0
C 1 0 6
C 1 6 6
C 1 1 5
2 2 . n
3 3 . n
1 0 0 p
R e . v 1 0 . 0 9 0 8 1 2
C 1 1 0
C 1 1 1
1 8 n
1 p
E L 3
E L 2
E L 0
E L 1
R 1 1 8
C S _ T X
4 7
7 8 5 M H ) z
7 d B
9 1 0 M H ) z
R 1 0 6
S M _ T X
7 5
4 8 - 4 9 M H ) z
0 9 - 1 5 M H ) z
1 1 d B
Schematic of the Antenna Switch Block
1.TROUBLE SHOOTING
S W 1 0 1
K M S 5 - 1 8
C 1 0 8
R e . v 1 0 . 0 9 0 8 1 2
C 1 6 8 1 n
C 1 5 8 1 n
C 1 4 9 1 n
C 1 3 7 1 n
S K Y 7 7 5 2 1
7
B S 1
6
B S 2
1
H B _ R F _ N I
3
L B _ R F _ N I
2
G N D 1
1 1
G N D 2
1 2
U 1 0 7
G N D 3
2 1
G N D 4
2 2
G N D 5
2 3
G N D 6
2 4
G N D 7
2 5
G N D 8
2 6
G N D 9
2 7
G N D 1 0
2 8
G N D 1 1
2 9
G N D 1 2
3 0
G N D 1 3
V B A T
- 97 -
4. TROUBLE SHOOTING
3 3 p
L 1 3 3
1 0 0 n
1 7
A N T
8
_ T X E N
9
M O D E
1 0
R S V D
1 3
R X 4
1 4
R X 3
1 5
R X 2
1 6
R X 1
1 8
W C D M A 1
1 9
W C D M A 2
2 0
W C D M A 3
4
V A P C
5
V B A T T
TP1
2 m m
C 2 0 6 C 2 1 9
1 ( 6 0 ) 8
1 0 u 4 7 p
LGE Internal Use Only