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CN1
53014-0810
1
SEND_L
2
AN.GND
3
SEND_R
4
+12V
TO CONTROL B.
5
-12V
(CN5)
6
RET_L
7
AN.GND
8
RET_R
RET_R
RET_L
XRST
1
2
XRST
3
+5V
4
+5V
5
DIG.GND
6
DIG.GND
7
-12V
TO MAIN B.
8
+12V
9
SEND_R
(CN23)
10
AN.GND
11
SEND_L
12
MUTE
13
MIDI_SEL
CN6
53014-1310
-VCC
VCC
5VC
-12V
1
AN.GND
2
FROM POWER
+5V
3
AMPLIFIER B.
+5V
4
DIG.GND
5
(CN5)
DIG.GND
6
+12V
7
CN2
C21
5045-07A
C20
C30
100uF16
100uF16
100uF16
L15
NIU
5VC
TP8
5VC
5VC
R80
R27
XRST
R81
47Ks
1Ks
1Ks
3
1
5
2
1
5
SW1
Q7
VCC
RES
VCC
RES
2
TP7
2
EVQ-QVT
2SC2412
NC
NC
3
4
1
Q8
3
3
4
GND
CAP
GND
CAP
2SC2412
2
RESET
IC10
IC3
1
C22
M51953A
R82
M51953A
C59
100Ks
100nF
10uF16
R83
100Ks
VCC
CN7
-VCC
53014-0610
1
2
FROM MAIN BOARD
3
4
(CN21)
5
6
C54
33uF16
C53
33uF16
R50
5K6s
1
7
2
TO MAIN BOARD
3
(CN20)
4
IC6B
5
UPC4570G2
CN4
53014-0510
MUTE
C15
R20
10KS
VCC
R22
6
1KS
R
5
R17
R16
2
47KS
220KS
D1
R19
1
47KS
BZX79C4V7
R21
C14
2
Q4
1
10KS
2SC2412
3
3
Q5
2
C5
2SA1037
R18
1uF16
47KS
3
1
2
NIU
2
L
1
Q3
3
2SC2412
R15
100KS
VCC
C16
100pFS
R10
560s
C39
R25
10uF16BP
R45
15KS
15KS
RET_L
R13
560s
R78
15Ks
C41
IC2A
R57
330nF
BA5218F
C1
18Ks
FLAT
10uF16BP
MOUT_L
2
1
3
R59
L
22Ks
8
4
C17
R26
100KS
0.1S
C18
V
C19
0.1S
100pFS
V-
R
C40
10uF16BP
10uF16BP
R46
C2
15KS
RET_R
R24
R79
R14
15Ks
15KS
100KS
IC2B
R9
BA5218F
220Ks
MOUT_R
6
FLAT
7
R60
5
22Ks
C42
R58
-VCC
330nF
18Ks
C44
R51
150pFs
C31
3K3s
R52
150pFs
680s
R49
C43
C52
C51
220pFs
C32
220pFs
C45
33uF16
5K6s
6
33uF16
33uF16
2
5
1
3
R62
4
3
R61
6K8s
IC6A
5
2
6K8s
UPC4570G2
4
8
R54
R53
V
V-
6K8s
68Ks
1
3
C34
C33
VR1
33uF16
33uF16
10KBX2
RK09K12A0A2AA
C35
C36
0.1s
0.1s
100pFS
R47
R23
27KS
R11
JK4
220S
P
100I
MUTES
YKF51_5046
7
MUTER
JK3
H
8
0.6W
L4
IC1B
PHR
7
FLAT
O
BA5218F
3
M
IN
2
L5
100pFS
N
PHL
4
5
I
E
1
OUT
R48
R12
L3
S
YKB21-5006
D
27KS
100I
0.6W
L1=L2=L3=BL02RN2R62
1
I
THRU
IC1A
BA5218F
8
4
FLAT
C12
0.1S
C13
0.1S
-VCC
CN3
5045-05A
1
MUTER
2
AGND
TO POWER
3
LOUT
AMPLIFIER B.
4
AGND
(CN2)
5
ROUT
FIX1
FIX2
R7
R6
L1
JK1
FIX3
1Ks
680s
SBT0160W
HLJ052001110
4
1
2
3
2
3
2
1
L/M
O
3
Q1
2SC2878
R5
U
1
1Ks
T
R76
NIU
P
FIX4
L2
R4
R8
JK2
SBT0160W
U
1Ks
680s
HLJ052001110
4
1
2
T
3
2
3
2
1
R
3
Q2
2SC2878
R3
1
FIXING
1Ks
R77
NIU
VCC
V
R1
100I
C3
0.6W
100uF16
C4
100uF16
R2
100I
0.6W
-VCC
V-
TP1
TP2
JK8
TP3
YKB21-5006
8
7
3
MIC INPUT
2
4
L14
SBT160W
5
4
1
1
3
2
R56
330s
C37
150nF
V
C38
R55
1
6K8s
680pFs
D6
DA204K
2
V-
D2
DA204K
1
5VC
IC4
3
R35
L3=L4=L5=SBT0160W
6N137
1Ks
R28
1
8
NC
VCC
220s
2
7
LA
EN
1
L7
2
3
6
LC
OUT
1
4
4
5
NC
GND
2
C24
2
3
R30
5VC
0.1s
220s
3
C25
5VC
4
L8
0.1s
1
4
R36
5
R31
4K7s
1
220s
IC5F
2
3
4
6
2
1
12
13
M_OUT
7
L9
1
4
IC5A
7
5VC
R32
74LS05
8
220s
74LS05
flat
2
3
flat
9
R37
R29
IC5D
4K7s
IC5E
220s
M_IN
C23
8
9
10
11
L6
0.1s
SBT0460
5VC
Q6
74LS05
74LS05
2SA1037
flat
flat
3
5VC
2
R44
22Ks
IC5C
1
IC5B
6
5
XRST
4
3
R33
R34
22Ks
22Ks
74LS05
74LS05
flat
CN8
53014-0710
FIX6
RXD0
7
M_IN
TXD0
6
M_OUT
REFGND
5
FIX7
FROM MAIN B.
SOFT
4
SOFT
SOST
3
SOST
(CN7)
DAMP
2
DAMP
FIX8
REF+5
1
C29
100uF16
ref5V
C7
C6
0.1S
0.1S
C8
C9
0.1S
0.1S
2
IC9A
1
UPC4570G2
3
4
8
-VCC
VCC
R68
Vss
Vdd
R69
270I
270I
C58
C55
33uF16
33uF16
C56
C57
0.1s
0.1s
TP9
5VC
R64
TP4
D11
0.22I
L13
SFPB-56
1W
RCH-875-151K
TP5
1
2
TP6
TP10
R65
2K7s
1%
R63
180
C50
1/4W
100uF35
R66
IC7
18Ks
8
1
CD
CS
1%
7
2
SI
ES
6
3
V+
CT
4
5
GND
INV
C46
NJM2360M
100uF16
FLAT
R67
1Ks
1%
C47
C49
NIU
390pFs
5% np0
D3
ref5V
DA204K
2
1
3
R39
22Ks
JK5
L10
2
1
4
SOFT
SOFT
3
R38
SWITCH
1
2
3
C26
1Ks
1nF
SBT0160W
HLJ0520_01_110
D4
ref5V
DA204K
2
1
R41
3
22Ks
JK6
L11
2
1
4
SOST
SOST
3
R40
SWITCH
1
2
3
C27
1Ks
1nF
SBT0160W
HLJ0520_01_110
D5
ref5V
DA204K
2
1
3
R43
22Ks
JK7
L12
2
1
4
DAMP
DAMP
3
SWITCH
1
2
3
R42
C28
1Ks
1nF
HLJ0520_01_110
SBT0160W
R70
100s
6
7
5
IC9B
R73
UPC4570G2
560Ks
R71
100s
6
7
5
IC8B
R74
560Ks
UPC4570G2
R72
100s
2
1
3
IC8A
UPC4570G2
R75
560Ks
4
8
Vss
Vdd
+27V
1
2
TO MAIN BOARD
3
(CN17)
R87
R86
CN5
2K2I
2K2I
53014-0310
0.6W
0.6W
STEP-UP
SWITCHING CIRCUIT
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