LG AT&T GR500 Service Manual page 167

7. CIRCUIT DIAGRAM
1 2
A C C _ G P _ U S B _
A C C _ U S B _ H S _ N I _ C
U S B _ D A T A 0
U S B _ D A T A 1
U S B _ D A T A 2
A C C _ U S B _ H S _ D A T A 3
A C C _ U S B _ H S _ D A T A 4
A C C _ U S B _ H S _ D A T A 5
A C C _ U S B _ H S _ D A T A 6
A C C _ U S B _ H S _ D A T A 7
A C C _ U S B _ H S _ N
A C C _ U S B _ H S _ S
A C C _ U S B _ H S _ D
C
D
A C C _ U A R T 0 _ R X
A P P _ U A R T _ R X
A C C _ U A R T 0 _ T X
A P P _ U A R T _ T X
E
F
G
H
1 2
LGE Internal Use Only
3 4 5
V B A T V D D E _ 1 V 8
C 6 0 0 C 6 0 1
0 1 . u 4 7 . u
1 0 V
C 3 C 4
C S C H P I _ S E L T E S T
A 4 B 5
L K C L O C K V C C I _ O 1
B 1 B 2
D A T A 0 V C C I _ O 2
A 1 C 2
D A T A 1 R R E F
A 2 C 1
D A T A 2 D M U S B _ D M
A 3 D 1
D A T A 3 U 6 0 1 D P U S B _ D P
A 5 E 2
D A T A 4 S I P 1 5 0 8 A E T F A U L T
A 6 D 3
D A T A 5 D I
B 6 B 3
D A T A 6 C F G 2
C 6 B 4
D A T A 7 C F G 1
D 5 D 4
X T N X T P S W _ N R 6 0 1
D 6 F 4
T P S T P V B U S V B U S
E 5 E 3
R I D R I R E G 3 V 3 1 K
E 1 F 5
C F G 0 X T A L 1 U S B _ X T A L 1
E 6 F 6
R E F 1 V 8 X T A L 2
R 6 0 3 C 6 0 5 C 6 0 6
0 1 . u
5 1 K 4 7 . u
U S B T a r n s c e v i e f r r o H g i h S p e e d
V D D E _ 1 V 8
V P P F L A S H
R 6 0 7 0
A P P _ A C C _ U A R T _ R X
R 6 1 0 D I N
V B U S
A C C s h o u d l b e m o u n e t d
R 6 1 1 0 R 6 1 2 4 7 0
O N S W B _ n
A P P _ A C C _ U A R T _ T X V B U S
R 6 1 3 D I N
A P P _ A C C _ U A R T _ T X
A P P _ A C C _ U A R T _ R X
C 6 1 8
0 1 . u
C N 6 0 1
4
K E Y N I 2 H O L D
3
K E Y N I 3
C A M
2
1
S D I E K E Y M A P
3 4 5
6 7 8
U 6 0 0 N U S 3 0 6 5 M U T A G
4 5
D R A N I S R C
3 6
C N T R L G A T E
2 7
G 2 G 1 G N D O U T
V B U S 4 3
1 8
O U T N I N I V C C
2 1
N F M 2 1 P C 1 0 5 B 1 A 3 F L 6 0 0
9
D R A N I _ T H E R M A L
P S D 1 2 L - F
N I S T P A R D 6 0 0
O V P C i r c u i t
V B A T
U S B _ D M
U S B _ D P
V B A T
1 2
C T S
1 1
R T S
1 0 F B 6 0 1
D S R H S _ E A R _ L
9 F B 6 0 2
U T X D H S _ E A R _ R
N C 4
8 U S B
N C 3 U R X D
7
N C 2 P W R
6
V B A T V B A T
5
O N _ S W O N _ S W V D D E _ 1 V 8
4
N C 1 V C H A R
3
T X T X
2 U A R T
R X R X
1
G N D G N D
2 5 . G 3 G
U T 6 0 0
A P P _ G P _ U S W _ S C L
A P P _ G P _ U S W _ S D A
V P P F L A S H O N U T U R V B A T G N D
A P P _ G P _ U S W _ N I T
A R R A Y T P P O N I T
V B A T
C 6 1 9
0 1 . u
M A N I K E Y P A D B A C K I L G H T L E D
6 7 8
- 168 -
9 1 0 1 1
C N 6 0 0
6
8
1 0
1 2
1 4
1
2
U S W _ D M
3
F B 6 0 0
U S W _ D P
C 6 0 3 1 u C 6 0 2 0 1 . u 4
M C I 2 P
5
B L M 1 5 H D 1 8 2 S N 1
7
9
C 6 0 4
1 1
2 2 p
1 3
U S W _ A D C _ D E T
1 5
V B A T V D D E _ 1 V 8 V D D _ M C I _ 2 V 6
U 6 0 2 R 1 1 1 4 D 2 6 1 D
R 6 0 2
1 3
V D D V O U T
3 9 . K
4 2
N C G N D 1
6 5
C E G N D 2 C 6 1 1
1 u
C 6 1 2
1 u
V B U S
D 2 D 5
B A T V B
A 4 C 5
D N 1 C O M 1 U S W _ D M C 6 1 4
A 5 B 5
D P 2 C O M 2 U S W _ D P 0 1 . u
U 6 0 3
B 3 B 4
M A X 1 4 5 2 6
U 1 U D I
A 3
U 2
B 1
R E S
A 1
M C I
D 4 D 1
A U D 1 C A P
D 3
A U D 2
C 4
G N D
A 2 C 3
S I E T C I
C 6 1 5 C 6 1 6
2 2 p 2 2 p
M A I X M : 4 7 . u F
C 6 1 7 C 6 9 9
M A I X M : N A 4 7 . u D I N T : I 1 0 n ( F N A )
T : I 1 0 0 K
U S B E / A R S w i c t h ( M U C I )
M A I X M : E U S Y 0 3 7 1 2 0 ( 1 M A X 1 4 5 2 ) 6
T : I E U S Y 0 3 7 2 0 0 1 T ( S 5 U S B A 3 3 4 0 ) 2
V D D E _ 1 V 8
U 6 0 4 B U 5 2 0 3 1 N V X
4 1
V D D O U T A C C _ G P _ F L P I S E N S E
3 2
N C G N D
C 6 2 0 C 6 2 1
0 1 . u 0 1 . u
S L D I E D E T E C T
E U S Y 0 2 6 8 1 0 1 > - E U S Y 0 3 6 2 6 0 1
9 1 0 1 1
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1 2
A
B
C
D
E
F
G
H
1 2