LG GM750 Service Manual page 185

7. CIRCUIT DIAGRAM
1 6 1 5
L
K
J
J 2 5
E B 1 I _ W
n S D R A M _ W E
G 1 9
n S D R A M _ R A S E B 1 I _ R
D 1 7
E B 1 I _ W
L 2 2
I E B 1 I _ O
D 2 2
E B 1 I _ C
E 2 0
E B 1 I _ C
E 2 1
E B 1 I _ C
D 2 1
E B 1 I _ C
H 1 9
E B 1 I _ C
B 2 1
n S D R A M _ C S E B 1 I _ C
A 2 3
E B 1 I _ C
H 1 8
S D R A M _ C K E E B 1 I _ C
B 2 4
S D R A M _ D C L K 0 R 2 2 2 2 4 E B 1 I _ D
B 2 5
S D R A M _ D C L K 1 R 2 2 1 2 4 E B 1 I _ D
D 1 4
E B 1 I _ M
K 2 5
n R E S E T O U T 1 E B 1 I _ R
E 1 2
S D R A M _ D Q S 3 E B 1 I _ D
H
B 1 4
S D R A M _ D Q S 2 E B 1 I _ D
D 1 6
S D R A M _ D Q S 1 E B 1 I _ D
A 2 1
S D R A M _ D Q S 0 E B 1 I _ D
D 1 2
S D R A M _ D Q M 3 E B _ I D M
D 1 5
S D R A M _ D Q M 2 E B _ I D M
E 1 5
S D R A M _ D Q M 1 E B _ I D M
B 2 3
S D R A M _ D Q M 0 E B _ I D M
A 2 6
E B 1 I _ A
B 2 6
E B 1 I _ A
B 2 7
E B 1 I _ A
D 2 3
E B 1 I _ A
G E 2 3
n S D R A M _ C A S E B 1 I _ A
D 2 4
E B 1 I _ A
G 2 0
E B 1 I _ A
E 2 2
E B 1 I _ A
F 2 4
E B 1 I _ A
E 2 5
E B 1 I _ A
L 1 5
E B 1 I _ A
G 2 1
S D R A M _ B A [ ] 1 E B 1 I _ A
L 1 6
S D R A M _ B A [ ] 0 E B 1 I _ A
J 2 1
E B 1 I _ A
H 2 0
S D R A M _ A D D R 1 [ ] 3 E B 1 I _ A
F 2 5
S D R A M _ A D D R 1 [ ] 2 E B 1 I _ A
L 1 7
S D R A M _ A D D R 1 [ ] 1 E B 1 I _ A
F G 2 4
S D R A M _ A D D R 1 [ ] 0 E B 1 I _ A
H 2 2
S D R A M _ A D D R [ ] 9 E B 1 I _ A
G 2 5
S D R A M _ A D D R [ ] 8 E B 1 I _ A
H 2 4
S D R A M _ A D D R [ ] 7 E B 1 I _ A
K 2 4
E B 1 I _ A
S D R A M _ A D D R [ ] 6
H 2 5
S D R A M _ A D D R [ ] 5 E B 1 I _ A
L 2 1
S D R A M _ A D D R [ ] 4 E B 1 I _ A
J 2 4
S D R A M _ A D D R [ ] 3 E B 1 I _ A
K 2 1
E B 1 I _ A
S D R A M _ A D D R [ ] 2
J 2 2
S D R A M _ A D D R [ ] 1 E B 1 I _ A
K 2 2
S D R A M _ A D D R [ ] 0 E B 1 I _ A
G 1 0
E B 1 I _ D
S D R A M _ D A T A 3 [ ] 1
E H 1 0
S D R A M _ D A T A 3 [ ] 0 E B 1 I _ D
D 1 1
S D R A M _ D A T A 2 [ ] 9 E B 1 I _ D
E 1 1
S D R A M _ D A T A 2 [ ] 8 E B 1 I _ D
G 1 1
S D R A M _ D A T A 2 [ ] 7 E B 1 I _ D
H 1 1
S D R A M _ D A T A 2 [ ] 6 E B 1 I _ D
G 1 2
S D R A M _ D A T A 2 [ ] 5 E B 1 I _ D
H 1 2
S D R A M _ D A T A 2 [ ] 4 E B 1 I _ D
A 1 3
S D R A M _ D A T A 2 [ ] 3 E B 1 I _ D
B 1 3
S D R A M _ D A T A 2 [ ] 2 E B 1 I _ D
D 1 3
S D R A M _ D A T A 2 [ ] 1 E B 1 I _ D
E 1 3
S D R A M _ D A T A 2 [ ] 0 E B 1 I _ D
A 1 4
S D R A M _ D A T A 1 [ ] 9 E B 1 I _ D
E 1 4
S D R A M _ D A T A 1 [ ] 8 E B 1 I _ D
D G 1 3
S D R A M _ D A T A 1 [ ] 7 E B 1 I _ D
H 1 3
S D R A M _ D A T A 1 [ ] 6 E B 1 I _ D
G 1 4
S D R A M _ D A T A 1 [ ] 5 E B 1 I _ D
H 1 4
S D R A M _ D A T A 1 [ ] 4 E B 1 I _ D
H 1 5
S D R A M _ D A T A 1 [ ] 3 E B 1 I _ D
G 1 5
S D R A M _ D A T A 1 [ ] 2 E B 1 I _ D
G 1 6
S D R A M _ D A T A 1 [ ] 1 E B 1 I _ D
E 1 6
S D R A M _ D A T A 1 [ ] 0 E B 1 I _ D
E 1 7
S D R A M _ D A T A [ ] 9 E B 1 I _ D
D 1 8
S D R A M _ D A T A ] 8 [ E B 1 I _ D
E 1 8
S D R A M _ D A T A [ ] 7 E B 1 I _ D
G 1 7
S D R A M _ D A T A [ ] 6 E B 1 I _ D
D 1 9
S D R A M _ D A T A [ ] 5 E B 1 I _ D
H 1 6
C
S D R A M _ D A T A ] 4 [ E B 1 I _ D
E 1 9
S D R A M _ D A T A ] 3 [ E B 1 I _ D
D 2 0
S D R A M _ D A T A ] 2 [ E B 1 I _ D
G 1 8
S D R A M _ D A T A [ ] 1 E B 1 I _ D
H 1 7
S D R A M _ D A T A [ ] 0 E B 1 I _ D
B
A
L G E n I e t n r l a U s e O n y l
1 6 1 5
LGE Internal Use Only
1 4 1 3 1 2 1 1 1 0
H K A N I : 0 P C B R e v s i o i n C h e c k A D C
R E . V R 1 R 2 A D C
A 1 5 0 K 1 0 K 0 1 . 6 V
V R E G _ M S M P _ 2 6 . V
B 1 5 0 K 4 7 K 0 5 . 2 V
C 1 5 0 K 6 8 K 0 8 . 1 V
V R E G _ M S M P _ 2 6 . V
D 1 5 0 K 1 0 0 K 1 0 . 4 V
R 1
E 1 5 0 K 1 5 0 K 1 3 . 0 V
F 1 5 0 K 3 0 0 K 1 7 . 3 V
D 2 0 3
1 0 . 1 5 0 K 4 7 0 K 1 9 . 3 V
P R S B 6 8 . C R 2
1 1 . 1 5 0 K 6 8 0 K 2 1 . 3 V
C 2 4 1 1 n R 2 1 0
1 0 K
V R E G _ M S M P _ 2 6 . V
E _ N
A S _ N
A T I 0 _ N
E _ N
S 5 _ N
S 4 _ N
S 3 _ N
S 2 _ N
S 1 _ N
S 0 _ N
K E 1
K E 0
C L K
C L K B
E M _ C L K
E S O U T _ N
Q S 3
Q S 2
Q S 1
Q S 0
3
2
1
0
D R 2 7
D R 2 6
D R 2 5
D R 2 4
D R 2 3
D R 2 2
D R 2 1
D R 2 0
D R 1 9 U 2 0 1
D R 1 8
D R 1 7
D R 1 6
D R 1 5 M S M 7 2 0 0 A 3 - 2 T _ D A T , A M S M 7 2 0 0 A 3 -
D R 1 4
D R 1 3
D R 1 2
D R 1 1
D R 1 0
D R 9
D R 8
D R 7
D R 6
D R 5
D R 4
D R 3
D R 2
D R 1
D R 0
Q 3 1
Q 3 0
Q 2 9
Q 2 8
Q 2 7
Q 2 6
Q 2 5
Q 2 4
Q 2 3
Q 2 2
Q 2 1
Q 2 0
Q 1 9
Q 1 8
Q 1 7
Q 1 6
Q 1 5
Q 1 4
Q 1 3
Q 1 2
Q 1 1
Q 1 0
Q 9
Q 8
Q 7
Q 6
Q 5
Q 4
Q 3
Q 2
Q 1
Q 0
1 4 1 3 1 2 1 1 1 0
9 8 7 6
V M C I _ B A I S
D I N
C 1
W P I E R
D 1
Y M _ L R T O U C H _ Y 1 Y D
E 1
Y P _ U R T O U C H _ Y 2 Y U
D 2
X M _ L L T O U C H _ X 2 X L
E 2
X P _ U L
T O U C H _ X 1 X R
A B 1 0
N C 1
A D 1 0
N C 2
M 2
G I P O 0 5 M S I P _ R E S E T _ N
L 4
G I P O 1 V G A _ R E S E T _ N
M 4
G I P O 2 V G A I _ O _ O F F
M 5
G I P O 3
L 7
G I P O 4 F L T _ C A M _ D A T A [ ] 0
N 7
G I P O 5 F L T _ C A M _ D A T A [ ] 1
L 5
G I P O 6 F L T _ C A M _ D A T A [ ] 2
N 8
G I P O 7 F L T _ C A M _ D A T A [ ] 3
M 1
G I P O 8 F L T _ C A M _ D A T A [ ] 4
L 8
G I P O 9 F L T _ C A M _ D A T A [ ] 5
M 7
G I P O 1 0 F L T _ C A M _ D A T A [ ] 6
M 8
G I P O 1 1 F L T _ C A M _ D A T A [ ] 7
P 5
G I P O 1 2 F L T _ C A M _ P C L K
P 1 1
G I P O 1 3 F L T _ C A M _ H S Y N C
M 1 1
G I P O 1 4 F L T _ C A M _ V S Y N C
N 1 1 R 2 1 7
G I P O 1 5
C A M _ M C L K
A A 1 7
G I P O 1 6 M A X 1 4 5 2 6 _ 2 I C _ S C L 4 7
A D 1 7
G I P O 1 7 A U I D O _ 2 I C _ S D A
A B 1 7
C 2 6 8 C 2 6 9
G I P O 1 8
A E 1 7 7 5 . p 7 5 . p
G I P O 1 9 M A X 1 4 5 2 6 _ 2 I C _ S D A
A A 1 8
G I P O 2 0 P R O X _ S D A
A G 1 8
G I P O 2 1 W L A N _ R E G _ O N
A D 1 8
G I P O 2 2 W C D M A _ 9 0 0 _ O N
A H 1 8
G I P O 2 3 O J _ S D A
A E 1 8
G I P O 2 4 P M _ N I T _ N
A B 1 8
G I P O 2 5 P S _ H O L D
A D 1 9
G I P O 2 6 O J _ S C L
A E 1 9
G I P O 2 7 A U I D O _ 2 I C _ S C L
A A 1 9
G I P O 2 8 L N I _ M O T _ P W M
A B 2 0
2 T _ P O W E R G I P O 2 9 O J _ M O I T O N
A B 1 9
G I P O 3 0 P R O X _ S C L
A H 2 0
G I P O 3 1 R 2 2 7 4 7 0
K E Y _ C O [ L ] 0
A A 2 0 R 2 6 2 4 7 0
G I P O 3 2 K E Y _ C O [ L ] 1
A E 2 0
G I P O 3 3 O J _ N R S T
A D 2 0
G I P O 3 4 L C D _ B L _ E N
A G 2 2
G I P O 3 5 W L A N _ R E S E T _ N
A E 2 1 R 2 5 2 4 7 0
G I P O 3 6 K E Y _ R O W ] 0 [
A H 2 2
R 2 4 2 4 7 0
G I P O 3 7 K E Y _ R O W ] 1 [
A D 2 1
G I P O 3 8 R 2 1 0 4 7 0
K E Y _ R O W ] 2 [
A E 2 2
G I P O 3 9 d e e t t c
M M C _ C D
A B 2 1
G I P O 4 0 M A X 1 4 5 2 6 _ N I T
A G 2 3
G I P O 4 1 M O I T O N _ 2 I C _ S C L
A B 2 2
G I P O 4 2
M O I T O N _ 2 I C _ S D A
A A 1 0
G I P O 4 3 B T _ U A R T _ R T S
A G 6
G I P O 4 4 B T _ U A R T _ C T S
A B 9
G I P O 4 5 B T _ U A R T _ R X D
A A 9
G I P O 4 6
B T _ U A R T _ T X D
A D 8
G I P O 4 7 M S M _ U I S M _ C L K
A H 6
G I P O 4 8 M S M _ U I S M _ R S T
A E 8
G I P O 4 9 M O I T O N _ N I T
A D 9
G I P O 5 0 M S M _ U I S M _ D A T A
A A 1 1
G I P O 5 1 W L A N _ S I D O [ ] 3
A H 8
G I P O 5 2 W L A N _ S I D O [ ] 2
V 1 3
G I P O 5 3 W L A N _ S I D O [ ] 1
A D 1 1
G I P O 5 4 W L A N _ S I D O [ ] 0
A E 1 0
G I P O 5 5 W L A N _ C M D
A B 1 1 R 2 1 8 3 3
G I P O 5 6 W L A N _ C L K
V 7
c o l s e o t M S M
G I P O 5 7 L N I _ M O T O R _ E N
V 8
G I P O 5 8 G P S _ L N A _ E N
W 7
G I P O 5 9 S S B D T _ R T R
V 1 1
G I P O 6 0 C A M _ 2 I C _ S C L
Y 7
G I P O 6 1 C A M _ 2 I C _ S D A
A E 1 1
G I P O 6 2 M M C _ C L K
A A 1 2
G I P O 6 3 M M C _ C M D
A A 1 3
G I P O 6 4 M M C _ D A T A [ ] 3
A E 1 2
G I P O 6 5 M M C _ D A T A [ ] 2
V 1 5
G I P O 6 6 M M C _ D A T A [ ] 1
V 1 4
G I P O 6 7 M M C _ D A T A [ ] 0
A A 5
G I P O 6 8 B T _ P C M _ O U T
A A 4
G I P O 6 9 B T _ P C M _ N I
A D 1
G I P O 7 0 B T _ P C M _ S Y N C
A D 2
G I P O 7 1 B T _ P C M _ C L K
A H 2 3
G I P O 7 2 A N T _ S E L 3
A A 2 1
G I P O 7 3 A N T _ S E L 2
A E 2 4
G I P O 7 4 A N T _ S E L 1
A D 2 2
G I P O 7 5 A N T _ S E L 0
A E 2 3
G I P O 7 6
A D 2 3
G I P O 7 7 W L A N _ W A K E U P
A D 2 4
G I P O 7 8
V R E G _ M S M E _ 1 8 . V V R E G _ M S M P _ 2 6 . V
U 2 0 3 N L S V 1 T 4 2 4 M U T B G
1 6
V C C A V C C B
2 5
A B
L C D _ V S Y N C L C D _ V S Y N C _ 2 V 7
3 4
G N D O E _
9 8 7 6
- 186 -
5 4 3 2 1
L G E n I e t n r l a U s e O n y l
L
K
V R E G _ T C X O _ 2 8 . 5 V
C 2 5 9 C 2 6 0
1 n 1 0 0 n
J
X 2 0 1 1 9 2 . M H z
R 2 2 0 1 4
R T R _ T R K _ L O _ A D J
V C O N T V C C
1 0 0
2 3 C 2 6 1 1 0 p 0
G N D O U T T C X O _ P M _ 1 9 2 . M H z
C 2 8 5
C 2 6 2 1 n
1 n 0 T G 5 - 0 1 0 L H _ 1 9 _ 2 M _ 7 5 A T C X O _ R T R _ 1 9 2 . M H Z
V R E G _ U S B _ 1 8 . V
C 2 6 3
1 0 0 p
C 2 6 4
R 0 2 3 1 0 0 n
1 0 0 K
U 2 2 0
V C C
5 T C 7 S H 0 4 F S
1 4 R 2 0 4
U S B H _ R E F _ C L K
3 3
2
G N D
C 2 6 5
R e v B
1 0 0 p
H
A R M 9 & A R M 1 1 J T A G
G
V R E G _ M S M P _ 2 6 . V
C N 2 0 1
1 7 1 8
1 1 4
U A R T 3 _ R X
2 1 3
M S M _ T C K
3 2 1
M S M _ T I D M S M _ T M S
4 1 1
J T A G _ P S _ H O L D M S M _ T R S T N
5 1 0
n J T A G _ R E S E T O U T M S M _ T D O F
6 9
M S M _ R T C K
7 8
U A R T 3 _ T X
1 5 6 1
A X T 6 1 4 1 2 4
E
A r a r y T P
N E S T I J G
D
V B A T
T P 2 0 1
V C H G _ V B U S V B A T
1 5 . m m
T P 2 0 2
U A R T 2 0 1
2 5 . G 3 G
R 2 0 8
T P 2 0 3
1 U A R T 3 _ R X
G N D G N D 1 K
2
U A R T 3 _ R X R X R X
R 2 0 7
3 U A R T 3 _ T X T P 2 0 5
U A R T 3 _ T X T X T X
1 K
4
N C 1 V C H A R
5
R E M O T E _ P W R _ O N O N _ S W O N _ S W R E M O T E _ P W R _ O N T P 2 0 4
6 C
V B A T V B A T
7
N C 2 P W R
8
N C 3 U R X D
9
U T X D
N C 4
1 0
D S R
1 1
R T S
1 2
C T S
U A R T _ T P
B
R 2 0 5
U S B H _ D A T A [ ] 0 U S B _ S U S P E N D
2 0 K
C 2 6 7
n 1
A
W o k r a o r u n d f r o R e s e f t o r m U S B S u s p e n d : M P P 1 5
5 4 3 2 1
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