LG B2000 Service Manual page 102

1 2
K E Y
R 3
P O W E R K E Y
8 6
A
R 3 1 0
K E Y _ R O W 0
6 8 0
V A 3 1 1
A V L C 1 4 S 0 2 0 5 0 1
R 3 1 7
K E Y _ R O W 1
6 8 0
V A 3 0 2
A V L C 1 4 S 0 2 0 5 0 4
R 3 2 4
K E Y _ R O W 2
6 8 0
V A 3 0 3
7 8
A V L C 1 4 S 0 2 0 5 0
B
R 3 3 0
K E Y _ R O W 3
6 8 0
V A 3 3 0 V A 3 0 4
S T A R
A V L C 1 4 S 0 2 0 5 0 A V L C 1 4 S 0 2 0 5 0
R 3 3 5
K E Y _ R O W 4
6 8 0
V A 3 0 5
A V L C 1 4 S 0 2 0 5 0
R 3 3 9 6 8 0 V A 3 0 6
K E Y _ C O L 0
A V L C 1 4 S 0 2 0 5 0
R 3 4 0 6 8 0
K E Y _ C O L 1
R 3 4 1 6 8 0
K E Y _ C O L 2
R 3 4 2 6 8 0
K E Y _ C O L 3
R 3 4 3 6 8 0
K E Y _ C O L 4
C
V A 3 3 1
A V L C 1 4 S 0 2 0 5 0
G 1
A D D 0 1 A 0
F 1
M E M O R Y
A D D 0 2 A 1
E 1
A 2
A D D 0 3
1 ( 2 8 + 3 2 P S R A M ) D 1
A 3
A D D 0 4
B 1
A D D 0 5 A 4
C 1
A D D 0 6 A 5
F 2
A 6
E U S Y 0 2 5 0 2 0 1 A D D 0 7
E 2
A 7
A D D 0 8
F 6
( M 3 6 L 0 T 7 0 5 0 T ) 0 A D D 0 9 A 8
D 7
A 9
A D D 1 0
E 7
A D D 1 1 A 1 0
B 8
A 1 1
A D D 1 2
C 8
A 1 2
A D D 1 3
D 8
A D D 1 4 A 1 3
F 7
A D D 1 5 A 1 4
E 8
A 1 5
A D D 1 6
F 8
A 1 6
A D D 1 7
D 2
A 1 7
A D D 1 8
D
B 2
A D D 1 9 A 1 8
B 3
A D D 2 0 A 1 9
E 6
A D D 2 1 A 2 0
1 V 8 _ V C O R E B 7
2 V 8 _ V M E M
A 2 1
A D D 2 2
C 7
A D D 2 3 A 2 2
C 3
A 2 3
D 3
A 2 4
E 3
A 2 5
B 5
V C C 1 1
L 4
V C C 1 2
B 6
V C C 2 1
K 6
V C C 2 2
J 8
V C C Q 1
K 7
V C C Q 2
L 3
V C C Q 3
D 4
V P P
K 5
P _ V C C
K 4
S _ V C C
B 4
V S S 1
C 4
V S S 2
L 1
V S S 3
L 2
E
V S S 4
L 5
C 3 2 6
V S S 5
L 6
C 3 2 7 C 3 2 8 0 1 . u
V S S 6
C 3 2 9 C 3 3 0
L 7
0 1 . u 0 1 . u
0 1 . u V S S 7
0 1 . u
L 8
V S S 8
1 2
L G C I 4 ( 2 - ) A 5 - 5 0 5 1 - 0 0 : 1
3 4 5
V B A T
R 3 0 1
1 0 K E N D
0 9
0
C L R
3
2 L E F T M E N U
M D I _ I V B I
S E L
5 6 U P
S E N D
9 I R G H T
0 S H A R P
D O W N
I S M _ D A T A
V A 3 0 8
V A 3 0 7 V A 3 0 9 V A 3 1 0
A V L C 1 4 S 0 2 0 5 0
A V L C 1 4 S 0 2 0 5 0 A V L C 1 4 S 0 2 0 5 0 A V L C 1 4 S 0 2 0 5 0
U 3 0 0
K E Y B A C K
R D 3 8 F 3 0 5 0 L 0 Z B Q 0
H 2
D 0
D A T A 0 0
H 3
D 1
D A T A 0 1
G 3
D 2 D A T A 2 0
H 4
D 3
D A T A 0 3
J 5
D 4
C 3 1 8
D A T A 0 4
G 5
D 5 1 u
J 6 D A T A 0 5
D 6
H 7 D A T A 0 6
D 7 C 3 2 3
D A T A 0 7
G 2
1 u
D 8
D A T A 0 8
J 3
D 9
D A T A 0 9
G 4
D 1 0
D A T A 1 0
J 4
D 1 1 D A T A 1 1
H 5
D 1 2 D A T A 1 2
G 6
D 1 3 D A T A 1 3
H 6
D 1 4
D A T A 1 4
J 7
D 1 5
D A T A 1 5
M D I _ I K E Y _ B L
J 1
_ S _ C S 1
C 5
S _ C S 2 M D I _ I K E Y _ B L
D 6
_ R A M _ C S
_ P 1 _ C S
K 2
_ P 2 _ C S K 8 R 3 7 0
P _ M O D E _ R E S E T
1 0 0
C 2
C 3 5 0
_ R _ L B D 5 _ L B S
_ _ R _ W R 1 0 0 p
W E
H 1
_ R _ O E _ R D
F 3
_ U B S
_ R _ U B
K 1
_ C E 1 _ R O M _ C S 1
G 8
_ C E 2 _ R O M _ C S 2
K 3
_ C E 3
E 4
_ W P
_ F _ W P
E 5
_ A D V F 5 _ A D V
_ W E
_ W R
J 2
_ O E 1 _ R D
H 8
_ O E 2
F 4
_ R S T
G 7
W A T I
C 6 _ W A T I
C L K B U R S T C L K
3 4 5
6 7
V B I R A T O R
/ I O
V B A T
C 3 0 0
4 7 . u
U 4 0 1
C N 3 0 1
M C I 5 2 5 5 2 - 8 . 5 B M 5
1 5 1
N I O U T
2
R 3 1 5 G N D
3 4
R A T O R 2
E N B Y P C 3 0 1
1 5 . K
1 u
C 3 0 2 C 3 0 3
0 0 . 1 u 1 u
C 3 0 4
2 7 p
2 V 8 _ V M E M
I S M C O N N E C T O R
2 V 8 5 _ V I S M 2 V 8 5 _ V I S M
R 3 3 6
2 0 K P N I
J 3 0 0
4 1
U S C 0
G N D 1 V C C
5 2
V P P R S T I S M _ R S T
R 3 3 7 U S C 1
6 3 R 3 3 8 0
I M _ C L K
I O C L K S
1 0 7
U S C 2
0
G N D 5 G N D 2
9 8
G N D 4 G N D 3
U S C 4
C 3 1 4 U S C 5
C 3 1 5 C 3 1 6
C 3 1 7
N A 2 2 0 n U S C 6
1 0 0 0 p N A
I L G H T
V B A T
C 3 2 0
C 3 1 9
1 u 1 u
R 3 4 4 R 3 4 8
R 3 4 5 R 3 4 9
R 3 4 6 R 3 4 7
4 7 4 7
C 3 2 1 C 3 2 2 4 7 4 7 4 7 4 7
1 u
1 u
L E B B S - 1 4 H
L D 3 0 0
L D 3 0 1
L D 3 0 2 L D 3 0 4
L D 3 0 3 L D 3 0 5
L E B B S - 1 4 H L E B B S - 1 4 H
L E B B S - 1 4 H L E B B S - 1 4 H
L E B B S - 1 4 H
1
2
S e t c
D e s
C h e
A p p
s I . s N t o c i e N . o D a e t N a m e
- 101 -
8 9
2 V 8 _ V M E M
C O N N E C T O R
R 3 0 5 R 3 0 8
R 3 0 4 R 3 0 6 R 3 0 7
1 0 0 K 1 0 0 K 1 0 0 K 1 0 0 K
1 0 0 K
V C H
R 3 1 1 N A
J T A G E N
R 3 1 2 N A
_ R E S E T
R 3 1 3 4 7
D S R
R 3 1 4 N A
T C K
R 3 1 6 1 0 0
R P W R O N
R 3 1 8 N A
T M S
R 3 1 9 4 7
U S C 0
R 3 2 0 4 7
U S C 6
R 3 2 1 4 7
D E B U G _ R X
R 3 2 2 N A
T I D
R 3 2 3 4 7
U S C 1
R 3 2 5 4 7
U S C 2
R 3 2 6 4 7
D E B U G _ T X
R 3 2 7 4 7
U S C 3
R 3 2 8 N A
_ 1
T D O
R 3 2 9 4 7
U S C 5
R 3 3 1 4 7
S C 4
U
R 3 3 2 N A
R 3 3 3
B A T T _ E P R O M R 3 3 4
B A T T _ T E M P
N A
1 K
C 3 0 5
D I A U A R T
C 3 0 9 3 9 p
C 3 1 0 C 3 1 1 C 3 1 2
C 3 0 8
C L O C K - 2 7 p 1 u
0 1 . u 2 7 p 3 9 p
R X R X D
T X T X D
- R T S C / T S P ( C )
- C T S R / T S P ( C )
R E S E T -
P R E C H A R G E C R I C U T I
V C H A R G E V B A T
C 3 2 5
0 1 . u
2 0 1
R 3 5
1 5
R 3 5 3
1 K
R 3 5 5
P R E C H A R G E
1 5 . K
I M X 9 T 1 1 0
Q 3 0 1
S g i n & N a m e
o i n D a e t
F G
M O D E L
2 0 0 . 4 - R A
g i n r e I K M . H . J
1 2 0 . 8
2 0 0 . 4
c k e d
L E E . S . Y
1 2 0 . 8
D R A W N I G
N A M E
2 0 0 . 4
o r v e d
I K M . B . Y
1 2 0 . 8
D R A W N I G
L G E e l t c o r n c i s n I . c
N O .
7. CIRCUIT DIAGRAM
1 0
A
A R G E A
V B A T C N 3 0 0
2 5
2 6
2 9
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
3 0
2 7
2 8
C 3 0 7
C 3 0 6
1 0 p 3 p
C 3 1 3
1 0 u
2 0 1 2
C
V B A T
C 3 2 4
0 1 . u
L D 3 0 6
2 1 , %
2
D
3
R 3 5 6
2 Q 4 0 1
2 S C 5 5 8 5
4 7 K 1
S h e t e S / h e e s t
1 0 1
I D O
3 5 /
M E M O R , Y M M , I / I O
V r e 1 . 0 .
L G E e l t c o r n c i s n I . c