Circuit Boards
Main Board Schematic-03
9
MU
TE
TO
SB
C
40
470uF
/25
VDIP
1
2
D3
SS
5819
S
MA
C
24
0.
1u
C
25
220uF
/16
VS
MT
C
26
0.
1u
C
27
100uF
/6
.3
VS
MT
C
28
0.
1u
C5
0.
1u
1
2
R
48
5K6
1
2
R
49
5K6
C
61
1000pf
C
62
510pf
R
12
1K5
C
31
100uF
/16
VS
MT
C
32
104
J-DIP
R
13
2R2
C
33
100uF
/16
VS
MT
C
34
100uF
/16
VS
MT
C
35
104
J-DIP
R
15
2R2
1
2
C
36
100uF
/16
VS
MT
R
11
1K
C
18
470uF
/16
VS
MT
R
50
10K
R
52
2K7
1
2
R
136
5K6
Q2
9014C
1
2
R
141
100
K
1%
1
2
R
14
4K7
1
VSS
2
V
O
UT
3
VIN
4
U4
A
M
S
1117
-3
.3
C
19
470uF
/16
VS
MT
1
2
R
138
56K
1
2
D4
IN
4148
B
E
C
Q1
MM
B
T8550
D(
1500
m
A)
1
2
C
30
100uF
/16
VDIP
5
-
6
+
2
3
BS1
4
AG
ND
1
ST
U
5-A
TA
8227
DIP
8
-
7
+
11
9
RIP
10
BS2
12
VCC
U
5-B
TA
8227
DIP
13
14
U
5-C
TA
8227
DIP
T10
1mm
T11
1mm
T12
1mm
1
2
3
4
5
6
CN3
2.
0*
6S
JN
1
VIN
2
GND
3
V
O
UT
U3
7805
C
29
10u
f/16
VS
MT
C
38
100uF
/16
VS
MT
1
2
R
27
NC
L8
2012
D
102
B
0805
R
28
0R
R
21
10R
2
1
R
65
NC
2
1
R
23
1206
C
O
PPER
2
1
R
26
0805
C
O
PPER
R
53
10K
R
54
20K
1
2
C6
0.
1u
R
58
0R
2
1
R
66
0805
C
O
PPER
2
1
R
67
0805
C
O
PPER
1
2
L11
NC
L12
NC
1
2
R
68
NC
1
2
R
69
0R
1
2
R
35
5K6
1 2
P
4.
8mm
1
G
ND
V
_G
ND
+9
V
_IN
P
O
W
ER
_C
TRL
+3
.3V
+9V
G
ND-SPK
+9
V
_IN
HP
_O
UT
+5V
SP+
+9V
SP-
G
ND-SPK
G
ND-SPK
G
ND-SPK
+9
V
_IN
G
ND-SPK
G
ND-SPK
+9V
G
ND-SPK
M
U
TE
MU
TE
+3
.3
VA
A
G
ND-AUDI
O
-IN
A
G
ND-AUDI
O
-IN
G
ND
_ADC
P
W
R
_DET
+3
.3
V
_AUDIO
AUDI
O
-M
CU
V
_G
ND