LG KF750 Service Manual page 194

7. CIRCUIT DIAGRAM
1 1 2 2 3 3
A A
T R C I K L E
V B A T
B B
C 5
4 7 .
C 5 0 5
1 u
V B A T
C C
X 5 0 0
1 2
V B A T 3 2 7 . 6 8 K H z
C 5 1 2 C 5 1 3 R T C C L K
2 4 p 2 4 p
S R S T _ n
S C L K
S D A T
B t a e t y r C o n . n R 5 0 8 0
D D
0 6 0 3
2 0 1 2
R 5 0 9
C o l s e o t P n i 3
P h o n e g o r u n d 1 %
0 0 . 2 5 o r u e t a s a d f i e f e r t n l a i p a r i
1 4 / W
e r u t n r p a h t
R 5 1 1 0
0 6 0 3
V B A T
R 5 1 2 0
B A T T _ G N D
2 0 1 2
R 5 1 3
1 %
1 4 / W 0 1 . o r u e t a s a d f i e f e r t n l a i p a r i
Q 5 0 1
S A I 9 1 1 D J
E E
G 1
S 1
D 1
D 3
R 5 1 4 4 7 K
D 4
D C N I _ A
D C N I
D 2
V B U S
G 2
S 2
R 5
T R C I K L E
V D D D _ 1 V 5 V D D C _ 2 V 6 5 V B A T
F F
R
1
C 5 2 6
0 1 . u
0 6 0 3
C 5 3 3 C 5 3 4
D I N 0 1 . u
0 6 0 3 0 6 0 3
G G
H H
1 1 2 2 3 3
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4 4 5 5
V D D D _ 1 V 5
3
Q 5 0 0
2
K T N 2 2 2 2 A U
1
C 5 0 0
4 7 . u
0 4
D 1 1 C
u
V B A T _ A V D D _ A
B
E X T L D O
E 1 2
V B A T _ B
F
V D D _ D
A 1 2 D
V B A T _ E V D D _ E
A 8 A
V B A T _ F V D D _ C
B
V D D _ H
M 1 1
V B A T _ G
_ C A
V D D _ F
A 5 A
V B A T _ C V D D _ G
C 1 0 M
M O D 1 V D D _ K
J
V D D L P
K 1 2
X T A L 1
K 1 1
X T A L 2
J 1 2 B
3 2 K H Z V B U C K
A
V D D B U C K
A
S W B U C K
T P 5 0 1 G 1 0
I S M O F F _ N
K 2
S R S T _ N
J 3
S C L K
K 3
S D A T
H 4 B
B D A T A V S S B U C K
G 1 2 D
F G S E N S E + P B A I S
C 5 1 9
F
4 7 p I S M V C C
C o l s e o t A B
U 5 0 2
G 1 1
F G S E N S - E
J
I S M R S T _ N
A B 3 0 0 - 0 R 2 B H
I S M C L K
H 1 H
V B A T _ D I S M D A T
E 1
C H S E N S E +
D
S C K 1
D
W S 1
C
S D 1 I
F 2 C
C H S E N S - E S D O 1
E
S C K 2
C
W S 2
E 2 D
C H R E G S D 2 I
F
S D O 2
K
M C I 1 P
J
M C I 1 N
L
M C I 2 P
M
M C I 2 N
F 3 M
D I C O M C I 3 P
H
M C I 3 N
J 1 K
V B U S M C I 4 P
L
M C I 4 N
1 5 4 7 K G 1
T R C I K L E
M
C C O 1
K
C C O 2
J 7 M
V D D _ A D C 1 S P K R P
M
S P K R N
L 6 M
V D D _ A D C 2 3 B E A R P
J
B E A R N
L 3 K
V D D _ S P K R A U X O 1
M
A U X O 2
K 5 L
V D D _ B E A R L N I E N I 1
K
L N I E N I 2
5 1 6
M 8 L
V D D _ C O D E C M D I R
5
E 3 J
V D D _ I D G D E C 3
J
D E C 4
M 1
V D D _ P L L
V D D E _ 1 V 8
S W B O O S T
A
B O O S T _ S I E N S E +
F 9 B
V D D I _ O B O O S T _ S I E N S - E
C
V _ B O O S T
B
B O O S T _ S W 1
C
B O O S T _ S W 2
O T P _ T E S T E 8 B
T E S T B O O S T _ S W 3
D 1 0 A
V R E F B O O S T _ F B +
H 3 D
R I E F V S S B O O S T
E
0 6 0 3
S e p a a r e t V S S _ I D G & V S S _ P L L G N D
4 4 5 5
6 6 7 7 8 8
V R A D A
R 5 0 4
0
V D D C _ 2 V 6 5
C 5 0 1 C 5 0 2 C 5 0 3
V D D
1 u 1 u 2 2 . u
1 2
1 1
1 2
1 2
1 1
1 2
9
7
1 2
1 1
C 5 0 6 C 5 0 7 C 5 0 8 C 5 0 9 C 5 1 0 C 5 1 1
1 u 1 u 1 u 1 u 1 u 3 3 n F
V B A T _ C V B A T
1 6 0 8 1 2 0 o h m ( @ 1 0 0 M H ) z
F B 5 0 0
2
B L M 1 8 P G 1 2 1 S N 1 J
2
2 8 . 2 * 6 . 1 * 0 . 0 7 . A ? 2 0 %
L 5 0 0 4 7 . u H
1
C 5 1 4 C 5 1 5
1 0 u 0 1 . u
0 6 0 3
1
R
C 5 1 8 0 1 . u
1 0 6 0 3
L o c l a G o r u n d P a l n e
1 0 V
1 U s e M u t l p i e l V a i s
I S M V C C
C 5 2 0
2
I S M R S T _ n 1 u
5
C o l s e o t A B
I S M C L K
2
I S M D A T
4 T P 5 0 2
2 I S 0 _ C L K
3 T P 5 0 3
2 I S 0 _ W S
2 T P 5 0 4
2 I S 0 _ U L D
1 T P 5 0 5
2 I S 0 _ D L D
4
2 I S 1 _ C L K
3
2 I S 1 _ W S
2 T P 5 0 8
2 I S 1 _ U L D
4 T P 5 0 9
2 I S 1 _ D L D
8
M C I 1 P
8
M C I 1 N
8
M C I 2 P
9
M C I 2 N
1 0
C 5 2 2 1 u F M _ R P
8
9
F M _ L P
C 5 2 3 1 u
9
7
C C O 1
7
C C O 2
2
S P K R P
3
S P K R N
4 S p e a k r e A m . p
B E A R P
6
B E A R N
6
E A R _ R
6
E A R _ L
1 0
1 0
5
M D I R
C 5 2 4 4 7 n
5
4
4
5
A C C _ G P 1 3 _ S P K _ A M P _ E N
5
C 5 3 1 4 7 n
3 R 5 2 0 1 %
0 6 0 3
S P K R P
4
4 C 5 3 2 4 7 n R 5 2 1 1 %
0 6 0 3
S P K R N
3
5
5
6 6 7 7 8 8
- 195 -
9 9 1 1 0 0 1 1 1 1
_ 2 V 8 V B A T
V D D D _ 1 V 5
V D D E _ 1 V 8
V I D G R A D _ 1 V 8
V B A T o t W C D M A & G S M P A M , B a k c g i l t h , s S p e a k r e A m , p U S B R / M T S w c t i , h a n d E x . t L D O s
V R A D A _ 2 V 8 o t R F 3 0 0 , 0 R F 3 1 0 0 a n a o l g a n d W C D M A P o w r e D e e t t c r o
o t A B 3 0 0 0 C O D E C s A / D C P / L L
V D D D _ 1 V 5
V D D E _ 1 V 8 o t A l l / I O S u p p e i l s a n d M e m o y r
V I D G R A D _ 1 V 8 o t R F 3 0 0 0 a n d R F 3 1 0 0 d g i t i l a
H _ S M B _ 2 V 7 5
V D D F _ 2 V 5
V D D G _ 2 V 7 5
V D D K _ 2 V 7 5
V D D C _ 2 V 6 5 o t H l l a S w c t i , h A B 3 0 0 0 B E A R a n d H e a d p h o n e A m . p
V D D H _ S M B _ 2 V 7 5 3 A x s i A c c l e r e t a r o
V D D F _ 2 V 5 o t D B 3 1 0 0 a n a o l g
o t S D C a d r a n d L C D
V D D G _ 2 V 7 5
V D D K _ 2 V 7 5 o t B u l e o t o h t
R 5 0 5
V B A C K U P o t A B 3 0 0 0 R T C m o d u e l
2 2 . K
V C O R E
V C O R E o t D B 3 1 0 0 C O R E
C 5 1 6
1 0 u
5 0 7
0 0 6 0 3
V B A T
C 5 2 5
R 5 1 7 1 % 3 9 K
2 2 . u
U 5 0 1 F S A 2 2 6 8 T U M X
R 5 1 8 1 % 1 5 1 0 8
B E A R P 1 B 0 1 A
1 7
B Y P A S S G N D 1 B 1 S 1
C 1 B 2
R 5 1 9 1 % 1 5 2 5
_ S H U T D O W N V O - B E A R N 2 B 0 2 A
B 1 A 1
V B A T
1 0 K 3 6
N I + V O + 2 B 1 S 2
C 2 B 3
1 0 K 4 9
N I - V D D G N D V C C
C 3 A 3
U 5 0 0 T P A 6 2 0 5 A 1 Z Q V R
0 6 0 3
A C C _ G P 2 7 _ A M P _ S W _ E N
R 5 2 4 1 % 3 9 K
0 6 0 3
9 9 1 1 0 0 1 1 1 1
LGE Internal Use Only
1 1 2 2
A A
B B
C C
D D
E E
F F
S P K _ R C V +
S P K _ R C - V
C 5 3 5
1 0 n
0 6 0 3
G G
H H
1 1 2 2