Audio - LG RU-27FB30C Series Service Manual

1 2
G
WF10
236mV
F
WF11
5V
E
WF12
544mV
D
WF13
692mV
C
WF14
2V
B
A
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
3828VD0210A
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
3 4
M M U U T T E E
S S H H T T 1 1
S S P P K K - - L L
S S H H T T 1 1
S S P P K K - - R R
S S H H T T 1 1
C C H H R R O O M M A A
S S H H T T 1 1
L L U U M M A A
S S H H T T 1 1
V V I I D D E E O O
S S H H T T 1 1
J J P P 1 1 0 0 0 0
6 6 6 6 1 1 3 3 V V 0 0 0 0 0 0 1 1 7 7 F F
14
M M A A T T R R I I X X WF
O O U U T T 2 2 4 4
M M A A T T R R I I X X - - O O U U T T
2 2 4 4
2 2 3 3
2 2 3 3
1 1 1 1
1 1 1 1
1 1 0 0
Y Y
1 1 0 0
Y Y / / C C
1 1 2 2
I I N N 1 1 2 2
C C
9 9
9 9
1 1 7 7
R R I I G G H H T T - - Y Y / / C C
R R I I G G H H T T 1 1 7 7
I I N N
1 1 6 6
1 1 6 6
2 2 2 2 L L E E F F T T - - Y Y / / C C
L L E E F F T T
2 2 2 2
I I N N
1 1 5 5
V V I I D D E E O O 1 1 5 5
1 1 4 4 V V I I D D E E O O
I I N N 1 1 4 4
1 1 3 3
1 1 3 3
R R I I G G H H T T 1 1 8 8 R R I I G G H H T T - - V V I I D D - - R R E E A A R R
1 1 8 8
I I N N
2 2 1 1
L L E E F F T T L L E E F F T T - - V V I I D D - - R R E E A A R R
2 2 1 1
I I N N
6 6
Y Y
6 6
Y Y / / C C
8 8
O O U U T T 8 8
C C
7 7
7 7
1 1 9 9 R R I I G G H H T T - - C C O O M M P P O O N N E E N N T T
R R I I G G H H T T
1 1 9 9
I I N N
2 2 0 0
L L E E F F T T L L E E F F T T - - C C O O M M P P O O N N E E N N T T
2 2 0 0
I I N N
3 3
3 3
R R 2 2 0 0 0 0
Y Y u u v v - - I I N N 2 2
2 2
2 2 1 1
2 2 4 4 7 7 Z Z D D 2 2 0 0 0 0
R R 2 2 0 0 1 1 2 2 9 9 . . 1 1 V V
1 1 / / 2 2 W W
7 7 5 5
0 0 D D Z Z 9 9 1 1 0 0 0 0 0 0 9 9 A A J J
1 1 1 1
M M T T Z Z J J 9 9 . . 1 1 B B
4 4 R R 2 2 1 1 0 0
1 1
C C r r - - I I N N 4 4
2 2 1 1
2 2 4 4 7 7 Z Z D D 2 2 0 0 1 1
2 2
R R 2 2 1 1 1 1 9 9 . . 1 1 V V
1 1 / / 2 2 W W
7 7 5 5 0 0 D D Z Z 9 9 1 1 0 0 0 0 0 0 9 9 A A J J
1 1
1 1 M M T T Z Z J J 9 9 . . 1 1 B B
1 1 R R 2 2 0 0 5 5
C C b b - - I I N N 1 1
2 2 1 1
4 4 7 7
2 2 Z Z D D 2 2 0 0 2 2
5 5
2 2 9 9 . . 1 1 V V
R R 2 2 0 0 6 6 1 1 / / 2 2 W W
5 5
1 1 0 0 D D Z Z 9 9 1 1 0 0 0 0 0 0 9 9 A A J J
7 7 5 5
1 1 M M T T Z Z J J 9 9 . . 1 1 B B
12
WF
P P r r - - S S W W
S S H H T T 1 1
P P b b - - S S W W
S S H H T T 1 1
Y Y - - S S W W
S S H H T T 1 1

Audio

5 6 7
R R 8 8 0 0 1 1
2 2 1 1
1 1 K K
R R 8 8 2 2 2 2 R R 8 8 2 2 4 4
C C 8 8 0 0 3 3
1 1 2 2 1 1 2 2
1 1
4 4 7 7 µ µ F F 4 4 7 7 1 1 . . 5 5 K K
G G N N D D
3 3 C C 2 2 2 2 5 5 V V
Q Q 8 8 0 0 0 0
R R 8 8 0 0 0 0 B B
2 2 1 1 G G N N D D
2 2 0 0 T T R R 9 9 4 4 5 5 0 0 0 0 9 9 A A A A C C 8 8 2 2 2 2
4 4 . . 7 7 K K 2 2
K K S S C C 9 9 4 4 5 5 C C - - Y Y 4 4 7 7 µ µ F F R R F F I I 2 2 7 7 K K
E E
1 1 1 1
2 2 5 5 V V
2 2
2 2
G G N N D D C C 8 8 2 2 1 1
R R 8 8 2 2 0 0 1 1 L L
1 1
1 1 2 2 1 1 2 2 1 1
5 5 . . 6 6 K K
2 2 C C 8 8 2 2 0 0 1 1 µ µ F F
R R 8 8 2 2 1 1 2 2
2 2 7 7 0 0 0 0 p p F F 5 5 0 0 V V
1 1 0 0 K K
1 1 1 1 6 6 V V 3 3
1 1
T T P P 3 3 6 6
3 3 M M U U T T E E
P P R R O O T T E E C C T T I I O O N N
+ + 1 1 7 7
V V S S W W
R R E E F F E E R R E E N N C C E E S S
C C 8 8 0 0 0 0 C C 8 8 0 0 1 1
2 2
1 1
1 1 0 0 0 0 0 0 µ µ F F 0 0 . . 1 1
1 1
2 2 5 5 V V 2 2 5 5 0 0 V V 9 9
T T U U R R N N - - O O N N
9 9
A A N N D D - - O O F F F F
G G N N D D G G N N D D
C C 8 8 1 1 1 1
R R 8 8 1 1 0 0 5 5
1 1 2 2 1 1 2 2 5 5
5 5 . . 6 6 K K
1 1 µ µ F F 4 4 R R
5 5 0 0 V V 4 4
2 2
R R 8 8 1 1 1 1 C C 8 8 1 1 0 0
2 2
1 1 0 0 K K
2 2 7 7 0 0 0 0 p p F F
1 1 1 1
1 1 6 6 V V
T T P P 3 3 4 4
C C 8 8 1 1 2 2
7 7
1 1 6 6
4 4 7 7 µ µ F F 6 6
2 2 2 2 5 5 V V
G G N N D D
R R 8 8 1 1 2 2 R R 8 8 1 1 4 4
1 1 2 2 1 1 2 2
4 4 7 7 1 1 . . 5 5 K K
C C 2 2 2 2 2 2
R R 2 2 3 3 5 5
1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V 2 2 . . 2 2 K K
C C 2 2 2 2 1 1 R R 2 2 3 3 4 4
1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V 2 2 . . 2 2 K K
C C 2 2 2 2 0 0
R R 2 2 3 3 3 3
1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V 2 2 . . 2 2 K K
2 2 4 4 2 2 3 3 2 2 2 2 2 2 1 1
2 2 8 8
C C N N 4 4 F F R R 2 2
3 3 8 8 7 7 - - B B 0 0 4 4 K K
C C 2 2 1 1 9 9
R R 2 2 3 3 2 2
4 4 R R I I G G H H T T - - F F R R O O N N T T
4 4 1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V 2 2 . . 2 2 K K
3 3
3 3
C C 2 2 1 1 6 6 R R 2 2 2 2 9 9
2 2 L L E E F F T T - - F F R R O O N N T T
2 2 1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V 2 2 . . 2 2 K K
1 1
1 1 2 2 5 5
1 1 2 2 3 3 4 4
C C 2 2 1 1 0 0
1 1
+ + 9 9 V V 2 2 2 2 µ µ F F
S S W W 2 2 1 1 6 6 V V
L L 2 2 0 0 0 0
1 1 2 2 C C 2 2 1 1 2 2
4 4 7 7 µ µ H H 1 1 C C 2 2 1 1 1 1
1 1
0 0 . . 1 1 4 4 7 7 µ µ F F
2 2 5 5 0 0 V V 2 2 1 1 6 6 V V
C C 2 2 1 1 3 3
R R 2 2 2 2 6 6
1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V C C 2 2 1 1 4 4 2 2 . . 2 2 K K
R R 2 2 2 2 7 7
1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V 2 2 . . 2 2 K K
C C 2 2 1 1 5 5
R R 2 2 2 2 8 8
1 1 2 2 1 1 2 2
0 0 . . 3 3 3 3 6 6 3 3 V V 2 2 . . 2 2 K K
R R 2 2 3 3 8 8
1 1 2 2
1 1 0 0 K K
R R 2 2 3 3 9 9
1 1 2 2
1 1 0 0 K K R R 2 2 4 4 0 0
1 1 2 2
1 1 0 0 K K
C C 2 2 0 0 9 9
2 2 2 2
2 2 R R 2 2 2 2 4 4
R R 2 2 2 2 5 5 2 2 1 1
R R 2 2 2 2 3 3 2 2 0 0 1 1 9 9 1 1 8 8 1 1 7 7 1 1 6 6 1 1 5 5 1 1 4 4 1 1 3 3 1 1 2 2 1 1 1 1
1 1 0 0 K K 1 1 0 0 K K 0 0 . . 3 3 3 3
1 1 0 0 K K
1 1 1 1 6 6 3 3 V V
1 1
I I C C 2 2 0 0 0 0
T T E E A A 6 6 4 4 1 1 5 5 C C
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 1 1 0 0
C C 2 2 0 0 3 3 2 2
0 0 . . 3 3 3 3
C C 2 2 0 0 0 0 6 6 3 3 V V 1 1
2 2 1 1
C C 2 2 0 0 2 2 0 0 . . 3 3 3 3 6 6 3 3 V V
2 2 1 1
2 2 2 2 µ µ F F 2 2
R R 2 2 0 0 9 9 + + 9 9 V V
1 1 6 6 V V 1 1
R R 2 2 0 0 8 8
1 1 0 0 0 0 K K S S W W
C C 2 2 0 0 1 1 1 1 0 0 0 0 K K 1 1
R R 2 2 0 0 4 4 2 2 R R 2 2 1 1 4 4
2 2 1 1 1 1 2 2 1 1 2 2
2 2 2 2 µ µ F F 2 2 1 1 0 0 0 0 K K C C 2 2 0 0 5 5 C C 2 2 0 0 6 6 1 1 0 0
2 2 1 1
1 1 6 6 V V R R 2 2 0 0 3 3 1 1 0 0 0 0 µ µ F F
0 0 . . 3 3 3 3
1 1 0 0 0 0 K K
1 1 6 6 V V
1 1 6 6 3 3 V V 1 1 2 2
ALL COMPONENTS WITH "M" IN THE DESIGNATOR
6-2
ARE A SURFACE MOUNTED COMPONENT.
8 9
I I C C 8 8 0 0 0 0
4 4 9 9 2 2 1 1 V V 0 0 0 0 0 0 2 2 1 1 R R
0 0 I I S S G G 7 7 2 2 6 6 3 3 0 0 0 0 B B
4 4 9 9 2 2 0 0 V V 0 0 0 0 0 0 2 2 2 2 M M
T T D D A A 7 7 2 2 6 6 3 3
C C N N 9 9 L L 4 4
3 3 6 6 6 6 - - 9 9 2 2 1 1 B B
LA
C C 8 8 2 2 4 4
1 1 0 0
T T P P 3 3 1 1 1 1
1 1
1 1 0 0 1 1 2 2 1 1
1 1 0 0 0 0 0 0 µ µ F F
2 2
C C 8 8 2 2 3 3 2 2 2 2 5 5 V V 2 2
0 0 . . 1 1
T T P P 3 3 0 0
3 3
5 5 0 0 V V 1 1
S S C C 3 3 RA
2 2
R R 8 8 2 2 3 3
3 3 . . 3 3
1 1
T T j j
MO
G G N N D D A A U U D D I I O O A A M M P P L L I I F F I I E E R R
T T H H
P P R R O O T T E E C C T T I I O O N N
C C N N 9 9 R R 4 4
3 3 6 6 6 6 - - 9 9 2 2 1 1 C C
C C 8 8 1 1 4 4 T T P P 2 2 9 9
8 8
1 1
1 1
8 8 1 1 2 2 1 1
C C 8 8 1 1 3 3 1 1 0 0 0 0 0 0 µ µ F F
2 2
2 2
0 0 . . 1 1 2 2 5 5 V V 2 2
1 1
5 5 0 0 V V Pb
3 3
T T P P 3 3 2 2 3 3
2 2
1 1 1 1 R R 8 8 1 1 3 3
4 4
4 4
3 3 . . 3 3
1 1 2 2 1 1 3 3 1 1 4 4 1 1 5 5 1 1
G G N N D D
G G N N D D
2 2 R R 8 8 3 3 1 1 2 2 R R 8 8 3 3 0 0
1 1 5 5
1 1 5 5
2 2 W W
1 1 2 2 W W 1 1
G G N N D D
G G N N D D
R R 2 2 3 3 6 6
2 2 1 1
R R 2 2 3 3 7 7 1 1 0 0 0 0
2 2 1 1
1 1 0 0 0 0
2 2 0 0 1 1 9 9 1 1 8 8 1 1 7 7 1 1 6 6 1 1 5 5 1 1 4 4 1 1 3 3
2 2 7 7
2 2 6 6
5 5 6 6 7 7 8 8 9 9 1 1 0 0 1 1 1 1 1 1 2 2
10
WF
C C N N 8 8 V V G G A A 2 2
3 3 6 6 6 6 - - 9 9 2 2 1 1 J J
R R 2 2 1 1 2 2
Y Y 1 1
1 1 1 1
1 1 2 2
4 4 7 7 2 2
R R 2 2 1 1 3 3 2 2
+ + 9 9 V V 7 7 5 5 2 2
R R 2 2 1 1 7 7 1 1
S S W W
P P r r 3 3
3 3
1 1 2 2
4 4 7 7 2 2
R R 2 2 1 1 8 8
2 2 4 4
R R 2 2 1 1 9 9 7 7 5 5 4 4
C C 2 2 0 0 8 8 1 1
1 1 0 0 0 0 K K R R 2 2 2 2 1 1
1 1
P P b b 5 5
1 1 2 2 5 5
1 1 2 2
4 4 7 7
2 2 2 2 µ µ F F
R R 2 2 2 2 0 0 R R 2 2 2 2 2 2 6 6
1 1 6 6 V V 6 6
1 1 0 0 0 0 K K 7 7 5 5
1 1 1 1
R R I I G G H H T T 7 7
7 7
C C 2 2 1 1 8 8
R R 2 2 3 3 1 1 8 8
2 2 2 2
8 8
+ + 9 9 V V 2 2 1 1 1 1 2 2
6 6 3 3 V V 0 0 . . 3 3 3 3
2 2 . . 2 2 K K
S S W W L L E E F F T T 9 9
9 9
C C 2 2 1 1 7 7
R R 2 2 3 3 0 0
2 2 1 1 0 0
R R 2 2 1 1 5 5 1 1 0 0
2 2 1 1 1 1 2 2
C C 2 2 0 0 7 7 6 6 3 3 V V 0 0 . . 3 3 3 3
1 1 0 0 0 0 K K 2 2 . . 2 2 K K
1 1
1 1 2 2
2 2 2 2 2 2 µ µ F F
R R 2 2 1 1 6 6
1 1 0 0 0 0 K K 1 1 6 6 V V
1 1
C C 2 2 0 0 4 4
2 2 1 1
0 0 . . 3 3 3 3 6 6 3 3 V V
R R 2 2 0 0 2 2
1 1 2 2
R R 2 2 0 0 7 7
1 1 0 0 0 0
1 1 2 2
1 1 0 0 0 0
10
Luminance
Y
C Chroma
Composite Video
Left Audio
Right Audio
Matrix Out
Pr
Pr
Pb
S S C C L L 2 2
S S H H T T 1 1
S S D D A A 2 2
S S H H T T 1 1
R R I I G G H H T T - - S S W W
S S H H T T 1 1
L L E E F F T T - - S S W W
S S H H T T 1 1
FC NARROW SHEET 2