SCHEMATIC DIAGRAM
L
+
L
-
Load
=
4
ohm
L
-
OUTPUT
PVCCL
PVCCL
BSPL
OUTPL
PGND
OUTNL
BSNL
BSNR
OUTNR
PGND
OUTPR
BSPR
PVCCR
PVCCR
PBTL
NC
RINP
RINN
PLIMIT
GVDD
AGND
AVCC
GAIN1
GAIN0
LINN
LINP
FAULT
SD
12
11
10
9
8
7
6
5
4
3
2
1
14
13
15
16
17
18
19
20
21
22
23
24
25
26
27
28
IC1
C103
470u
/
35
L1 22uH
C4
102
C5
102
1
2
J16
L2 22uH
C6
0
.
22uF
/
63V
C7
474
C12
474
C18
104
R5
1K
R6
100K
C19
1uF
C22
330P
C17
102
C2
104
C3
102
C26
1uF
C28
4
.
7uF
C30
4
.
7uF
R9
10
R40
10
ZD6
9
.
1V
R136
10K
R137
33
K
2
1
3
Q21
3904
R142
56K
2
1
3
Q22
3904
R188
0
R189
2K2
2
1
3
Q23
3904
R190
10K
R191
0
C149
104
C1
330P
R1
10
C8
470u
/
35
C20
1uF
R24
10
R25
10K
R26
10K
R27
10K
R36
15K
R46
15K
V12
V12
V12
STBY
-
H
VOL
_
O
V12
STBY
-
H
MUTE
P-12
SCHEMATIC DIAGRAM
KC
+
8V
GND
OUT
MIC
_
VOL
MAIN
_
VOL
USB
/
MP3
_
IN
MIC
_
IN
5
4
1
2
9
6
3
JK1
LPF2
-
OUT
LPF1
-
IN
LP1
-
OUT
LPF2
-
IN
OP2
-
OUT
OP2
-
IN
OP1
-
IN
OP1
-
OUT
CC0
CC1
VCO
CLK
-
O
GND
AGND
REF
VCC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IC6
R45
10
C110
10uF
/
10V
C111
10uF
/
10V
R61
15K
C112
104
C113
104
C114
104
C115
104
C116
560P
C117
560P
R63
10K
R81
10K
R82
5K6
C118
472
R83
10K
R84
15K
R85
1K
R87
27K
TP7
C119
104
5
+
6
-
8
7
4
IC7
-
A
TL072
3
+
2
-
1
IC7
-
B
TL072
C120
4
.
7uF
R88
33k
TP9
R91
10K
R92
150K
C124
104
C126
102
R94
10K
C128
473
C129
4
.
7uF
C138
472
R105
10K
R106
15K
C95
100uF
/
16V
R58
10K
R107
10K
TP327
C75
104
5
+
6
-
8
7
4
IC8
-
A
TL072
3
+
2
-
1
IC8
-
B
TL072
C34
4
.
7uF
TP3
R33
22K
R34
10K
C38
4
.
7uF
C39
4
.
7uF
R35
47K
R37
22K
R39
22K
TP4
TP5
$
104
$
104
C45
100uF
/
16V
C47
332
C49
223
R64
3K3
R65
3K3
R66
4K7
C50
153
R67
10K
R68
27K
R69
27K
R70
27K
R71
27K
C51
4
.
7uF
1
2
3
4
CN7
R72
47K
C54
4
.
7uF
R75
10K
C55
330P
2
1
3
Q9
3904
2
1
3
Q10
3904
R76
10K
R77
10K
R78
22K
R79
10K
C56
100uF
/
16V
C63
4
.
7uF
R110
4K7
C65
104
C98
4
.
7uF
OUT
IN
GND
3
2
1
U10
LM78M05
GND
IN
OUT
3
2
1
IC4
C58
104
C64
104
R18
2K2
1
2
3
CN4
C15
4
.
7uF
R28
2K2
C23
4
.
7uF
R31
10K
R32
10K
R30
47K
3
1
2
VR1
B50K
C25
4
.
7uF
C27
4
.
7uF
R41
18K
R42
2K2
C29
4
.
7uF
C31
4
.
7uF
1
2
3
CN13
3
1
2
VR2
B50K
1
2
3
CN2
3
1
2
VR3
B50K
1
2
3
CN6
1
2
3
CN8
C32
4
.
7uF
R44
2K2
R43
27K
C33
4
.
7uF
C48
332
C52
223
R47
3K3
R49
3K3
R50
4K7
C41
153
R51
10K
3
1
2
VR4
B50K
3
1
2
VR5
B50K
R29
0
5
4
3
2
1
JA1
JP
-
204
-
5P
C16
4
.
7uF
R38
10K
R2
3K3
R3
27K
1
2
J2
R8
2R2
C9
104
R20
2R2
C14
100uF
/
16V
MIC
_
VOL
_
IN
+
12V
VCCD3
VCCD3
7
MIC
_
VOL
_
O
ECH
_
IN
OK
_
IN
+
12V
VCCD3
OK
_
IN
VOL
_
IN
+
5V
V12
DGND
+
8V
+
5V
+
5V
OK
_
IN
OK
-
SW
OK
-
SW
V12
+
12V
AUDIO
_
DEL
_
VOL
+
8V
ECH
_
IN
VCCD3
VOL
_
O
VOL
_
IN
MIC
_
VOL
_
IN
MIC
_
VOL
_
O
VCCD3
+
5V
AUX
_
IN
AUX
_
IN
P-11
