29
29
HCD-GX20
5-10. Schematic Diagram – MAIN Section (4/4) –
4.0
0
0
0
0
12
11.8
0
0
0
0.7
11.9
11.9
11.1
4.8
4
4.4
4.4
4.4
4.4
4
0.7
0.7
0
0
0
5.6
4.4
4.4
4.4
4.4
0.7
0
0
0
0
0
0
6.6
1.2
1.9
0.7
0.7
5.8
1.5
2.1
30
31
39
40
41
42
43
44
45
46
47
48
49 50
51
52 53 54
55
58596061626364656671 67 69 70
80
74 75 76 77 78 79
MAIN BOARD
(4/4)
+
+
-
-
SPEAKER
SWIITCH
Q331,332
MUTE
Q315,316
MUTE
Q313,314
MUTE CONT
Q809,810
PROTECT DETECT
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
SWITCH
SWITCH
SWITCH
JK303
CN403
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299