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1
2
To AD/DA
+6.27dB(gain:-2.06)
fc=40kHz
R88
3.3K
RETURN_L-
R93
3.3K
RETURN_L+
C111
3300p
differential output full scale:0.96*VA[V]
DSP THRU:-1.93dB
4.8Vpp
A
R106
3.3K
RETURN_R-
RETURN_R+
R110
3.3K
C126
3300p
-8.17dB(gain:-0.39)
SEND_L1
SEND_R1
SEND_L2
SEND_R2
S1
SEND.SchDoc
A2001WV-6P
DAC_BIAS1
DAC_BIAS
CN7
1
V1_L
IN_1L O UT_L
2
IN_2L
OUT_R
3
V1_R
IN_1R
4
V2_L
IN_2R
B
5
6
V2_R
S2
SEND.SchDoc
DAC_BIAS2
DAC_BIAS
CN8
IN_1L O UT_L
1
V3_L
IN_2L
OUT_R
2
IN_1R
3
V3_R
IN_2R
4
V4_L
5
6
V4_R
A2001WV-6P
C
+12V
+12V
C166
C167
0.1u
0.1u
C172
C173
0.1u
0.1u
IC15C
-12V
-12V
NJM4580M
D
REMARK
REVISAL REASON
1
2
3
R87
C104
+3.34dB(gain:-1.47)
3300p
C106
6.8K
R89
470p 5%
2
C121
220p 5%
1
1.5K
R108
10K
3
R105
2
IC15A
R96
NJM4580M
1
1.5K
C112
6.8K
3
R97
470p 5%
IC17A
NJM4580M
6.8K
R101
C116
C120
3300p
6.8K
R107
470p 5%
6
C131
220p 5%
7
1.5K
R123
10K
5
IC15B
R122
6
NJM4580M
R113
7
1.5K
C127
6.8K
5
R116
470p 5%
IC17B
NJM4580M
6.8K
CV_COMP
FOR VU METER CALIBRATION
R306
R307
PWM_CALIB
12K
100K
C115
1u
+12V
R194
0
C162
C169
C168
47u 25V
0.1u
0.1u
C175
C174
C176
0.1u
0.1u
47u 25V
IC17C
NJM4580M
IC12C
IC18C
R201
NJM4556AL
NJM4556AL
0
-12V
DATE
REVISED BY
3
4
5
V1
VCA.SchDoc
R111
0
C182
IN_L
OUT_L
10u 20%
COMP_L
R114
0
OUT_R
IN_R
COMP_R
R100
6.8K
C184
H:COMP ON
10u 20%
SEL_COMP
C1
COMP.SchDoc
OUT
IN
CV
EG
C2
COMP.SchDoc
OUT
IN
CV
EG
+12V
R135
10K
R136
R137
10K
4.7K
2
R141
1
METER+
R140
3
10K
R305
6.8K
IC13A
R144
NJM4580M
1K
2.7K
C108
+12V
0.47u
6
7
R308
5
IC13B
33K
NJM4580M
C117
IC13C
-12V
NJM4580M
0.1u
R167
3.3VD
1K
RX_MIDI
+5V
PC1
5
4
C155
3
0.1u
3.3VD
TLP2368(TLMIDI,E(0
+5V
R189
3.3VD
1K
TX_MIDI
C161
0.1u
2
4
IC14A
IC14B
SN74LVC1G125DCK
SN74LVC1G125DCK
4
5
6
C105
220p 5%
R90
100 5% 1/2W 2010
R121
10K
2
10K
C107
R91
Q3
1
R126
2SD2704KT146
R92
NU
3
IC12A
220u 6.3V
NJM4556AL
6.8K
R127
10K
6
1K
R95
R98
7
5
C114
100 5% 1/2W 2010
IC12B
NJM4556AL
220u 6.3V
C113
220p 5%
1K
R112
R102
R131
10K
2
10K
Q4
R104
2SD2704KT146
1
R133
100 5% 1/2W 2010
NU
3
IC18A
NJM4556AL
R304
10K
6
R99
7
100 5% 1/2W 2010
5
IC18B
NJM4556AL
C128
R118
10uNP 16V
470
Q5
R120
2SD2704KT146
10K
1K
R125
C136
R128
10uNP 16V
470
R130
Q6
2SD2704KT146
10K
1K
R132
METER+
+5V
WD1
R134
MC2840
0
Q8
EXPRESSION
2SA1162-GR
R139
C141
100K
H:Mute ON
100u 16V
L:Mute Off
MUTE_E
R143
10K
MUTE_S
3.3VD
DT6
DTC114EUB
R146
C142
100
10u 16V
R303
1M
R164
10K
-12V
SYNC_RISE
DIN1
4
SYNC_FALL
R174
1
2
R175
NU
1
R178
NU
220
D4
2
3
R179
NU
5
Q13
2SC2712-BL
D
C158
0.1u
DS-05-02(DIN5P W/OUT SW) (D)
DIN2
4
R191
2
220
R193
NU
1
R195
NU
R197
3
220
R199
NU
5
C170
10u 20%
DS-05-02(DIN5P W/OUT SW) (D)
DRAWN BY
DESIGNED BY
CHECKED BY
DRAWING No.
KOD-A31315
6
7
8
CN5A
6
5
4
3
2
1
A2001WR-6P
JACK_CHASSIS_2
NU
Drive:5.0V = 10k ohm
Drive:3.3V = 2.2k ohm
3.3VD
R138
PH4
2.2K
R142
1K
SUSTAIN
R145
PJ-603AG-04
WD2
NU
MC2840
C143
C144
C145
1000p
1000p
1000p
3.3VD
R148
C147
470
R151
1000p
NU
PH5
C148
1000p
R155
1K
R156
PJ-603AG-04
NU
WD3
MC2840
C150
C151
C152
1000p
1000p
1000p
R165
10K
3.3VD
+5V
R166
2SC2712-BL
20mV-20Vpp
Q10
R168
100K
100K
R170
10K
R171
SYNC_CN
C153
4.7K
47p 5%
PH6
R173
470K
WD4
MC2840
R176
R177
C154
0.1u
220K
D
22K
R180
LJE0371-4P
NU
R183
Q14
R184
R185
C156
C157
D5
47K
2SC2712-BL
150K
100K
1000p
1000p
R186
PH7
+5V
R190
0
1K
C160
R192
10u 20%
1K
R196
R198
LJE0371-4P
NU
SYNC_OUT
C163
C164
R200
10K
Q16
1000p
1000p
100K
2SC2712-BL
CHECKED BY
MODEL
TITLE
DATE
*
7
8
A
B
C
D
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