LG AT&T GR500 Service Manual page 163

7. CIRCUIT DIAGRAM
1 2
A
B
G T X _ 8 5 0 _ 9 0 0
G T X _ 1 8 0 0 _ 1 9 0 0
R 2 0 8 0
A N T S W 2
C R 2 0 9 0
A N T S W 1
R
A N T S W 0
R
A N T S W 3
D
E
D C D
W D C
F
P l a c
G
H
1 2
LGE Internal Use Only
3 4 5
V B A T
G N D 1 3 V B A T T
3 0 5 R 2 0 0 0
G N D 1 2 V A P C G T X _ V A M
2 9 4
G N D 1 1
2 8 C 2 0 3 3 3 p
G N D 1 0 W C D M A 3 W R F _ B A N D _ 5
2 7 2 0 C 2 0 4 2 2 p
G N D 9 W C D M A 2 W R F _ B A N D _ 2
2 6 1 9 R 2 0 2 5 1
G N D 8 W C D M A 1
2 5 1 8
G N D 7
2 4
G N D 6 R X 1 G R X _ 8 5 0
U 2 0 0
2 3 1 6
G N D 5 R X 2 G R X _ 9 0 0
2 2 1 5
G N D 4 R X 3 G R X _ 1 8 0 0
2 1 1 4
G N D 3 R X 4 G R X _ 1 9 0 0
1 2 1 3
G N D 2
1 1 R 2 0 4 D I N
G N D 1 R S V D
2 1 0
S W 2 0 0
L B _ R F _ N I M O D E
3 9 M M 8 1 3 0 2 - 6 0 0
H B _ R F _ N I
1
_ T X E N
8 0
B S 2 R 2 1 0 0 R 2 1 1
C 2 0 5 2 2 p
6 G 4 G 3
B S 1 A N T N I O U T
7 1 7 G 1 G 2
S K Y 7 7 5 2 1
R 2 1 2
D I N
0
2 1 3
0
2 1 4
G S M P A M W I T H A S M
V B A T
U 2 0 3
L 2 0 0 3 3 . u H
B 1 A 2
V D D S W V C C _ W P A
C 2 1 8 A 1
P V N I
0 1 . u F C 3
F B
C 2
C _ R E F V C O N
B 3
S G N D
R 2 2 0
C 1 A 3
D C _ E N E N P G N D
2 2 0
L M 3 2 0 8 T L
e m e n t N o t i c e : P G N D m u s t b e i s o l a t e d f r o m C o m m o n G N D o n L 1 , L 2 a n d L 3
D C - D C C O N V E R T O R
3 4 5
6 7 8
A N T 2 0 0 A N T 2 0 1 A N T 2 0 2
R 2 0 3 0
R 2 0 5 R 2 0 6 V D D A _ 2 V 8
0 D I N
R 2 0 7 D I N
E X T _ L D O
D I N
L 5 0 1
A N T 2 0 3
D I N
R 2 1 5
R 2 1 6
D I N
V D D E _ 1 V 8
S N 7 4 L V C 1 G 1 2 5 D R L R
U 2 0 2
1 5 R 2 1 8 1 0
B T _ C L K R E Q _ n _ O E V C C
2 A
M C L K S E C
3 4
G N D Y
R 2 2 1
D I N
R 2 2 2 3 3
B T _ C L K
P l a c e m e n t N o t i c e : B T B u f f e r s h o u l d b e c l o s e d t o R F 3 3 0 0 0
B l u e t o o t h B U F F E R
6 7 8
- 164 -
9 1 0 1 1 1 2
V B A T
V R A D _ 2 V 8
U 2 0 1
C E G N D
3 2
V D D V O U T
4 1
R P 1 0 1 K 2 8 2 D
2 2 . u
C 2 0 6 1 u C 2 0 7
A D O U T
R T E M P
T E M P S E N S O R
9 1 0 1 1 1 2
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Only for training and service purposes
A
B
C
D
E
F
G
H