LG KF750 Service Manual page 158

G N D 6
1 5
G N D 7
1 6
G N D 8
1 7
G N D 9
1 8
G N D 1 0
1 9
G N D 1 1
2 0
G N D 1 2
2 2
G N D 1 3
2 4
D C S _ P C S _ N I
2 1
G S M _ N I
2 3
V A P C
2 5
V B A T T
2 6
B S 2
2 7
B S 1
2 8
S
TP17_RF
C207
PAM Input
W T X _ B A N D _ 1 _ E N
W P A _ B A I S
C 2 0 4
C 2 0 6 1 0 p
2 2 p
C 2 0 7
W T X M O D _ B A N D I _
5 6 p
C 2 1 0 C 2 0 9
D I N D I N
V B A T
C 2 1 3
D I N
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
P G N D
2 9
G N D 5
1 4
G N D 4
1 3
G N D 3
1 2
G N D 2
1 1
G N D 1
9
W C D M A 1
1 0
R X 1
7
R X 2
6
R X 3
5
R X 4
4
R S V D
3
M O D E
2
T X E N
1
A N T
8
TP13_RF
K Y 7 7 5 1 9 U 1 0 0
C107
FEM Output
TP14_RF
C226
Duplexer Output
L 2 0 5
N A
F L 2 0 2 S
2
A N T
1
G N D 1 G
4
G N D 2 G
8
G N D 3 G
V C C _ P A
C 2 0 0
0 0 . 1 u
C 2 0 3
1 0 0 0 p C 2 0 5
1 0 0 0 p
U 2 0 0 S K Y 7 7 1 7 4
1 1 1
V C C 1 P G N D
2 1 0
E N A B L E V C C 2
3 9
L
V C O N T R O L G N D 3
1
4 8
R F _ N I R F _ O U T
7
G N D 2
8 2 . n H
5 6 L 2 0 2
V B A I S G N D 1
4. TROUBLE SHOOTING
W R F
R X 9 0 0
R X 1 9 0
R X 1 8 0
C 1 0 7 2 2 p
D I N
C 1 0 8
2 2 p
C 2 2 6
W R F _ B A N D _ 1
A Y Z Y 1 G 9 5 E B 0 B 0 0
7
R X W R X _ B A N D _ 1
5
T X W T X _ B A N D _ 1
3
N D 6
6
N D 5
9
N D 4
TP16_RF
IS200
Isolator Input
2 0 0 L D C 1 8 1 G 9 5 1 9 B 3 - 2
N 2 0 0
n H
1
N I M _ O U
2
G N D 1 G N D
C 2 1 1
3
D I N C _ O U T T E R M N I A T
W P O W _ S E N S E
- 159 -
_ B A N D _ 1
R X 8 5 0
0
0 TP12_RF
SW100
RF test connector
S W 1 0 0
K M S 5 - 1 8
TP15_RF
IS200
Isolator Output
S I 2 0 0 C E S 2 0 1 G 9 5 D C B 0 0 0
7
G N D 1 G N D 2
6
T N I O U T
G N D 3 G N D 4
5
2
4
E
LGE Internal Use Only
W T X _ B A N D _ 1