LG KF750 Service Manual page 198

7. CIRCUIT DIAGRAM
1 1 2 2 3 3
S O C K
A A
B B
C C
U I S M
I S M V C C
I S M V C C
R E A L _
R E A L _
J 9 0 1
R E A L _
4 1
G N D V C C
D D 5 2
V P P R S T I S M R S T _ n
6 3
I S M D A T _ I O C L K I S M C L K
8 7
G N D 2 G N D 1
C 9 0 9 L 9 0 0 C 9 0 6 C 9 0 7 C 9 0 8
0
3 3 p 2 2 p 1 u 3 3 p
I S M V C C
D 9 0 0
6 1
I S M D A T
E E
5 2
4 3
P L R 0 5 0 4 F
F F
L C D B A C K I L G H
V B A T
B 5 B 4
V B A T C P V O U T
F 4
V B A T 1
G G E 1 D 2
V D D E _ 1 V 8 V B A T L D O L E D 1
C 2
L E D 2
C 9 1 7 1 u A 5 C 1
C 3 P L E D 3
A 4 B 1
C 3 N L E D 4
C 9 1 8 1 u B 6 B 2
C 2 P L E D 5
C 6 A 2
C 2 N L E D F L
0 1 . u C 9 2 0 1 u C 5 U 9 0 3
C 1 P
D 6 F 5
C 1 N S B A I S
C 9 1 9 B D 6 0 9 5 G U L
F 3
S S E N S
E 6
I V O
E 4
G C 1
0 R 9 3 1 C 4 E 3
S U B _ P M _ R E S E T B R E S E T B G C 2
0 R 9 3 2 D 4
S U B _ P M _ S D A S D A
D 5
0 R 9 3 3
S U B _ P M _ S C L S C L
F 2
L D O 1 O
A 3 E 2
C P G N D L D O 2 O
E 5 D 1
S G N D W P W M N I
B 3 D 3
L E D G N D F L A S H C N T
H H
1 1 2 2 3 3
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Only for training and service purposes
4 4 5 5
E T _ P C B
M C I R O S D _ D A T 0
M C I R O S D _ D A T _
M C I R O S D _ D A T 1
M C I R O S D _ D A T 2
M C I R O S D _ D A T 3
M C I R O S D _ C M D _
M C I R O S D _ C M D
M C I R O S D _
A P P _ G P 1 3 _ M C _ C L K
M C I R O S D
J 9 0 0
1 8
M C I R O S D _ D A T 2 D A T 2 D A T 1 R E A L _ M C I R O S D _ D A T 1
2 7
M C I R O S D _ D A T 3 D A T 3 D A T 0 R E A L _ M C I R O S D _ D A T 0
3 6
M C I R O S D _ C M D C M D V S S
4 5
V D D C L K R E A L _ M C I R O S D _ C L K
V D D G _ 2 V 7 5
9 1 1
G N D 1 G N D 3
1 0 1 2
G N D 2 G N D 4
I S M C L K
I S M R S T _ n
T
S M B _ S D A
S M B _ S C L
S U B _ P M _ S C L
0 R 9 2 8
S U B _ P M _ S D A
C 9 1 5 0 R 9 2 9
2 2 . u
W L E D _ P W R
W L E D 1
W L E D 2
W L E D 3
W L E D 4
W L E D 5
S B A I S
S E N S
G A N I 1
G A N I 2
R B 5 2 1 C S 3 - 0 R 9 3 4
V G A _ V D D _ 2 8 . V
0
R B 5 2 1 C S 3 - 0
R 9 3 5
V G A _ V D D _ 1 8 . V
T P 9 1 5 0
L C D _ P W M
C 9 2 1 C 9 2 2
1 u 1 u
4 4 5 5
6 6 7 7 8 8
V D D E _ 1 V 8 V D D G _ 2 V 7 5
U 9 0 0 S N 7 4 A V C A 4 0 6 E Z X Y R
A 5 D 5
V C C A V C C B
C 5
D A T 0 _ D R I
B 2 D 2
D A T 0 A D A T 0 B R E A L _ M C I R O S
C 1
D R I D A T 1 2 3 _ D R I
A 2 D 1
D A T 1 A D A T 1 B R E A L _ M C I R O S
B 4 C 4
D A T 2 A D A T 2 B R E A L _ M C I R O S
A 4 D 4
D A T 3 A D A T 3 B R E A L _ M C I R O S
B 5
D R I C M D _ D R I
B 1
C M D A
A 3
C L K C L K A
A 1
R E T C L K _ F
B 3 C 2
G N D 1 C M D B R E A L _ M C I R O S
C 3 D 3
G N D 2 C L K B R E A L _ M C I R O S D
C 9 0 1
0 1 . u C 9 0 3
0 1 . u
L E V E L S H F I T E R F O R M C I R O S D 2 0 0 7 1 . 0 0 . 2
F r o P o r d u t c n i s p e t c o i n T P
T P 9 1 7
C T S _ O N
T P 9 0 1
A P P _ A C C _ U A R T _ T X
T P 9 0 2
A P P _ A C C _ U A R T _ R X
S U B L E D
L D 9 0 0
R 9 0 0
V B A T S U B _ L E D
1 0 0 o h m
Z D 1 Z D 2
R S B 6 8 . C S T 2 R R S B 6 8 . C S T 2 R
M O T O R _ P
F o r m M A N I C N 7 0 3
A P P _ 2 I C _ S D A
A P P _ 2 I C _ S C L
S L C I E _ B O A R D T O M A N I C O N N E C T O R
6 6 7 7 8 8
- 199 -
9 9 1 1 0 0 1 1 1 1
S e t - p U p C r u e r t n R e g l u t a
V B A T C 9 2 3
2 2 . u
C 9 2 5
1 u H
4 7 n
L 9 0 1
U 9 0 4 A A T 1 2 7 0 F I O T - 1
1 1 4
C T R S E T
2 1 3
F L A S H _ L E D _ T O R C H E N _ S E T F L O U T A
3 1 2
F L A S H _ L E D _ E N F L E N F L G N D
4 1 1
A G N D F L O U T B
5 1 0
N I F L N I H
6 9
L X G N D
7 8
P G N D O U T
C A
L D 9 0 1
D _ D A T 0
V A
D _ D A T 1 2 2 . u
E V
D _ D A T 2 C 9 2 4 V A 9 0 0
D _ D A T 3 E V L C 1 4 S 0 2 0 5 0
D _ C M D
_ C L K
V D D H _ S M B _ 2 V 7 5 V D D E _ 1 V 8
U 9 0 1 B M A 1 5 0
1 1 0
N C 1 N C 2
2 9
V D D V D I D O
3 8
G N D S I D
4 7
A P P _ G P 0 7 _ 3 A X S I _ N I T N I T S D O
5 6
C S B S C K
C 9 0 5
2 2 n
0 1 . u
C 9 0 4
T h e r e a - x s i a - c c e e l o r m t e r e
M O T O R C R I C U T I
M O T O R _ E N
T O U C H _ 3 1 . V V B A T
T O U C H _ 3 1 . V
3 2 1
Q 9 0 0
K R X 1 0 2 U
R 9 1 9 1 0 0 K
4 5
B Y P A S S G N D
C 1 B 2
_ S H U T D O W N V O -
B 1 A 1
Q 9 0 1 R 9 2 5 5 1 K
C O U T
N I + V O +
R 9 3 6
B K R C 4 0 2 E C 2 B 3
W M
N I R 9 2 4 5 1 K
0 N I - V D D
C 3 A 3
E G N D
0 0 . 1 u C 9 1 3
U 9 0 2 T P A 6 2 0 5 A 1 Z Q V R
C 9 1 4 C 9 1 2 0 0 . 1 u
D I N
F r o A C F c o n n e t c o i n
T P 9 0 5
M O T O R _ P W R +
T P 9 0 6
V G A _ V D D _ 2 8 . V
T P 9 0 7
S B A I S
T P 9 0 8
W L E D _ P W R
T P 9 0 9
T O U C H _ 3 1 . V
T P 9 1 0
M C I R O S D _ D A T 0
T P 9 1 1
I S M D A T
T P 9 1 2
S E N S
T P 9 1 3
G A N I 1
T P 9 1 4
V D D H _ S M B _ 2 V 7 5
9 9 1 1 0 0 1 1 1 1
LGE Internal Use Only
1 1 2 2
r o
F L A S H _ L E D _ N I H
M E R A F L A S H L E D
9 0 1
L C 1 4 S 0 2 0 5 0
C C
S M B _ S D A
S M B _ S C L
D D
E E
M O T O R _ P W R -
M O T O R _ P W R +
F F
e t t s T P
G G
H H
1 1 2 2