Only For Training And Service Purposes - LG AT&T GR500 Service Manual

3. TECHNICAL BRIEF
T X _ A D C _ S T R B _ 2 V 8
U 1 0 2
1
_ O E V C
2 A
T X _ A D C _ S T R B
3
G N D
S N 7 4 L V C 1 G 1 2
Q D A T A _ A M P _ M S B
D I A T A _ F R E Q _ M S B
R F _ C T R L _ D A T A
R 1 2 8 0
M C L K
T N 4 2 - 6 5 6
G N D 1
2
H O T 2
3
R 1 3 3 0
M C L K S E C
V I D G R A D _ 1
B. Receiver Part
LGE Internal Use Only
R 1
F B
R 1 1 2 3 9 0
5
V D D A _ 2 V 8
C V R A D _ 2 V 8
4
Y
5 D R L R
V D D A _ 2 V 8
R 1 1 4
1
W R X _ Q _ N W R X Q N
2 5 1
W R X _ Q _ P W R X Q P V C C A 2
2 7
V C C A 1
3
W R X _ _ I N W R X N I
4 5 6
W R X _ _ I P W R X P I E T X H B
5 4
E T X L B
6
A M P _ F R E Q _ L S B E D A T A C
7 5 2
D A T A _ S T R E D A T A S T R E A M M O D G T X _ V A M
8
E D A T A A
9 5 0
E D A T A B E R X H B 2
4 8
E R X H B 1
1 0
R F _ C T R L _ S T R _ 1 S T R
4 6
E R X L B 2
1 1 4 4
D A T A U 1 0 3 E R X L B 1
R F 3 3 0 0
1 2 4 2
R F _ C T R L _ C L K C L K W R X H B 2
3 8
W R X H B 1
1 3
T E S T O U T T E S T O U T
1 4 4 0
M C L K R E Q C L K R E Q W R X L B
1 5
M C L K
3 7
R F C T R L 1 W D C D C _ E N
1 7 3 6
X O N R F C T R L 2
1 8
2 6 M H z
2 X O P
H O T 1
1
2 0 3 5
G N D 2 M C L K S E C W T X L B
4 2 1
X 1 0 0 V C C D
3 1
W T X H B 3
2 3 3 3
W T X L P W T X H B 2
2 4 2 9
W T X N I W T X H B 1
2 5
W T X Q P
2 6 5 7
W T X Q N P G N D
V 8
W T X _ _ I P
R F T R A N C E I V E R
W T X _ _ I N
W T X _ Q _ P
W T X _ Q _ N
Figure 3-7-4. WCDMA Transceiver schematic
1 1 5 6 0
1 0 0 1 8 0 0
R 1 1 5
2 7
G T X _ 1 8 0 0 _ 1 9 0 0
0
R 1 1 9 2 7
G T X _ 8 5 0 _ 9 0 0
5 6 0 R 1 2 4
3 9 n H L 1 1 3
L 1 1 5
S A F E B 8 3 6 M A L 0 F 0 0
F L 1 0 4
5
R 1 3 5 0 G N D R 1 3 6 0
1 4
N I O U T W T X
G 1 G 2
2 3
F L 1 0 5
3
R 1 3 9
G 3 R 1 4 0 0
1 4
W T X
N I O U T
G 1 G 2
0
2 5
S A F E A 1 G 8 8 K B 7 F 0 0
- 68 - Copyright © 2009 LG Electronics. Inc. All right reserved.
3 9 . p
C 1 1 8
F L 1 0 2
L 1 0 3
G N D 6 G N D 5
2 7 . n H 1 0 5
G N D 4 G N D 3
8 3
G N D 2 G N D 1
7 2
O U T _ 1 9 6 0 N I _ 1 9 6 0
6 4
3 9 . p
O U T _ 1 8 4 2 _ 5 N I _ 1 8 4 2 _ 5
C 1 2 2
9 1
S A W E N 1 G 8 4 B C 0 F 2 5
L 1 0 5
2 2 . n H
F L 1 0 3
3 3 . p
C 1 2 7
G N D 6 G N D 5
1 0 5
G N D 4 G N D 3
L 1 0 8 L 1 0 9
8 3
G N D 2 G N D 1
8 2 . n H N A 7 2
O U T _ 9 4 2 _ 5 N I _ 9 4 2 _ 5
6 4
O U T _ 8 8 1 _ 5 N I _ 8 8 1 _ 5
9 1
3 3 . p S A W E N 8 8 1 M B A 0 F 2 5
C 1 2 8
L 1 1 1 L 1 1 2
1 0 n H N A
3 3 p
C 1 2 9
R 1 2 3 0
T X _ A D C _ S T R B _ 2 V 8
C 1 3 1
D I N
1 8 n H
W R X _ B A N D _ 5
N A
L 1 1 6
_ B A N D _ 5 _ T O _ P A
_ B A N D _ 2 _ T O _ P A

Only for training and service purposes

L 1 0 2
G R X _ 1 9 0 0
3 9 . n H
L 1 0 4
N A
R 1 1 3
G R X _ 1 8 0 0
3 9 . n H
L 1 0 6
N A
R 1 1 8 0
G R X _ 9 0 0
L 1 0 7
N A
R 1 2 2 0
G R X _ 8 5 0
L 1 1 0
1 0 n H
W R X _ B A N D _ 2
L 1 1 4
N A