LG SB74 Service Manual page 30

3. CD CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
WAVEFORM
A B C D
10
5
6 9
22
7 11
21
13
12
19
20
3
4
8
2 15
14
1
17
16
E F G H I
3-21
18 25
24
23
26
J K L M N
3-22
27
28
29
O P Q R S
CD
SB74
2009. 07. 10
T