1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D
D
C
C
B
B
A
A
DESIGNED BY
DRAWN BY
CHECKED BY CHECKED BY MODEL
DRAWING No.
DATE
TITLE
KOD-A31315
*
REVISED BY
DATE
REMARK
REVISAL REASON
+5V
R174
220
R197
220
R191
220
0.1u
C155
+5V
+5V
3.3VD
DS-05-02(DIN5P W/OUT SW) (D)
5
1
2
3
4
DIN2
DS-05-02(DIN5P W/OUT SW) (D)
5
1
2
3
4
DIN1
3.3VD
R189
1K
0.1u
C158
R167
1K
0.1u
C161
2SC2712-BL
Q10
2SC2712-BL
Q13
2SC2712-BL
Q14
2SC2712-BL
Q16
R198
10K
R168
100K
R170
10K
R185
100K
R184
150K
R171
4.7K
R177
22K
R173
470K
R176
220K
R183
47K
0.1u
C154
R192
1K
R186
0
R190
1K
R200
100K
MC2840
WD4
C153
47p 5%
PH7
LJE0371-4P
PH6
LJE0371-4P
D5
D
D4
D
100 5% 1/2W 2010
R95
10K
R102
TX_MIDI
RX_MIDI
R166
100K
R175
NU
R178
NU
R179
NU
R193
NU
R195
NU
R199
NU
+5V
3.3VD
10K
R90
R125
1K
R118
470
C164
1000p
C163
1000p
SYNC_OUT
SYNC_CN
C157
1000p
C156
1000p
SYNC_RISE
SYNC_FALL
R165
10K
R164
10K
3.3VD
R180
NU
R196
NU
20mV-20Vpp
5
4
1
2
3
PC1
TLP2368(TLMIDI,E(0
2SD2704KT146
Q5
2
4
IC14A
SN74LVC1G125DCK
IC14B
SN74LVC1G125DCK
3.3VD
10u 20%
C160
10u 20%
C170
10K
R120
6.8K
R100
MC2840
WD1
R134
0
+5V
R143
10K
R139
100K
2SA1162-GR
Q8
100u 16V
C141
10u 16V
C142
DTC114EUB
DT6
MUTE_E
H:Mute ON
L:Mute Off
R132
1K
2SD2704KT146
Q6
PH4
PJ-603AG-04
PH5
PJ-603AG-04
SUSTAIN
EXPRESSION
C145
1000p
C144
1000p
1K
R142
R145
NU
C152
1000p
C151
1000p
1K
R155
R156
NU
C143
1000p
C150
1000p
2.2K
R138
MC2840
WD2
MC2840
WD3
3.3VD
3.3VD
R108
10K
R123
10K
MUTE_S
6.8K
R92
R128
470
10K
R130
1.5K
R89
6.8K
R87
470p 5%
C106
To AD/DA
DAC_BIAS1
NJM4580M
IC15C
NJM4580M
3
2
1
IC15A
R
RETURN_L-
RETURN_R-
R
3.3K
R88
3300p
C104
220p 5%
C131
220p 5%
C121
+12V
-12V
0.1u
C167
0.1u
C173
differential output full scale:0.96*VA[V]
4.8Vpp
3.3K
R93
6.8K
R97
3300p
C111
470p 5%
C112
1.5K
R96
+6.27dB(gain:-2.06)
fc=40kHz
1.5K
R107
6.8K
R101
470p 5%
C120
3.3K
R106
3300p
C116
3.3K
R110
6.8K
R116
3300p
C126
470p 5%
C127
1.5K
R113
0
R111
0
R114
NJM4580M
5
6
7
IC15B
0.1u
C166
0.1u
C172
-12V
NJM4580M
5
6
7
IC17B
NJM4580M
3
2
1
IC17A
NJM4580M
IC17C
SEND_L1
SEND_R1
SEND_L2
SEND_R2
IN_L
IN_R
OUT_L
OUT_R
COMP_L
COMP_R
V1
VCA.SchDoc
CV_COMP
+12V
Drive:5.0V = 10k ohm
Drive:3.3V = 2.2k ohm
C147
1000p
C148
1000p
470
R148
R151
NU
100
R146
220u 6.3V
C107
220u 6.3V
C114
+12V
-12V
0.1u
C169
0.1u
C175
NJM4556AL
IC12C
NJM4556AL
3
2
1
IC12A
NJM4556AL
5
6
7
IC12B
0
R194
0
R201
220p 5%
C105
220p 5%
C113
100 5% 1/2W 2010
R91
100 5% 1/2W 2010
R99
100 5% 1/2W 2010
R104
2SD2704KT146
Q4
2SD2704KT146
Q3
R98
1K
R112
1K
47u 25V
C162
47u 25V
C176
A2001WR-6P
1
2
3
4
5
6
CN5A
DAC_BIAS2
IN
CV
OUT
EG
C2
COMP.SchDoc
10K
R136
10K
R140
6.8K
R141
10K
R135
4.7K
R137
2.7K
R144
+12V
IN
CV
OUT
EG
C1
COMP.SchDoc
IN_1LOUT_L
OUT_R
IN_1R
DAC_BIAS
IN_2L
IN_2R
S1
SEND.SchDoc
6.8K
R105
6.8K
R122
IN_1LOUT_L
OUT_R
IN_1R
DAC_BIAS
IN_2L
IN_2R
S2
SEND.SchDoc
SEL_COMP
NJM4580M
IC13C
NJM4580M
5
6
7
IC13B
NJM4580M
3
2
1
IC13A
+12V
-12V
JACK_CHASSIS_2
NU
1M
R303
-12V
10uNP 16V
C128
10uNP 16V
C136
NJM4556AL
IC18C
0.1u
C168
0.1u
C174
10K
R121
10K
R127
R126
NU
NJM4556AL
3
2
1
IC18A
NJM4556AL
5
6
7
IC18B
10K
R131
10K
R304
R133
NU
H:COMP ON
1K
R305
PWM_CALIB
12K
R306
100K
R307
33K
R308
1u
C115
0.1u
C117
0.47u
C108
FOR VU METER CALIBRATION
METER+
A2001WV-6P
1
2
3
4
5
6
CN7
V1_L
V1_R
V2_L
V2_R
V3_L
V3_R
V4_L
V4_R
DSP THRU:-1.93dB
-8.17dB(gain:-0.39)
+3.34dB(gain:-1.47)
C182
10u 20%
C184
10u 20%
A2001WV-6P
1
2
3
4
5
6
CN8
METER+
