3-3
A
A
C
B
B
j
g
p
p
h
o
m
e
d
g
h
f
f
j
n
c
a
o
b
d
e
Headphone jack board
AC power supply board
DC power board
Main board
gital input board
d
Digital output
board
board
50
Connector
board
75
74
59
61
51
57
58
54
50
58
58
49
60
39
41
53
47
47
37
70
67 69
48
46
28
45
42
27
45
43
52
30
29
23
31
25
26
41
68
7
76
40
6
44
44
38
1
18
24
47
40
55
72
72
72
72
37
