Roland V-Drums TD-20 - Eliminating Crosstalk Between Pads

47
TD-20
fig.main8-c
A1DU2L3B034
Phones&Master
MAIN_CPU
TRIG_CPU
Phones&Master
To COAXIAL
VPEN POWER
DIRECT3L
DIRECT4R
DIRECT3R
DIRECT4L
D
+
5A
+
15
-15 -
A5
+
5D
+
D3.3
+
15
-15
+
5D
A
D
A
D
-15
A
A
+
15
A
D
+
5D
D
D DD D
+
D
+
5D
A
D
A
D
A
D
A
D
A
D
A
D
A
D
A
D
D
A
D
A
A
D
A
D
A
D
D
A
D
A
D
D
A
D
A
A
D
C162
0.1
C163
0.1
C170
0.1
C171
0.1
R140
100MCR100J@
R145
100MCR100J@
C180
0.1
C183
0.1
C190
0.1
CN6
B07B-PH-SM3-TB
1
1
2
2
3
3
4
4
5
5
6
6
7
7
C137
0.1
C140
0.1
C123
0.1
L6
600N1608Z@T01
R110
22
R117
100
DA30
MA142WK-(TX)
12
3
DA31
MA142WK-(TX)
12
3
TER2
M1698
1
2 3
4
TER1
M1698
1
2 3
4
L105
600
N1608Z@T01
C606
0.1
C607
0.1
DA200
MA142WK-(TX)
12
3
C122
10/16
C181
100/16
C184
100/16
C608
220/6.3
C609
220/6.3
IC201
PQ033DZ01ZP
VIN
1
GND
5
ON/OFF
2
NC
4
VOUT
3
IC29
TA78L05F
IN
3
OUT
1
COM
2
IC31
TA79L05F
IN
2
OUT
3
COM
1
CN38
28FMN-BMT-A-TFT
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
C161
10/16
C168
10/16
C164
10/16
C172
10/16
C136
10/16
C139
10/16
RA37
100
18
27
36
45
R701
1k
R702
100
C601
1000p
C500
0.1
C501
0.1
C502
0.1
C503
0.1
C504
0.1
C505
0.1
C506
0.1
C507
0.1
C508
0.1
C509
0.1
C510
0.1
C511
0.1
C512
0.1
C513
0.1
C514
0.1
C515
0.1
C516
0.1
C517
0.1
R619
100k
MIX_LRTN
MIX_RRTN
DIRECT1L
DIRECT1R
DIRECT2L
DIRECT2R
A_MUTE
X5VRST
MIDI_RX
MIDI_TX
FOOT_T
FOOT_R
FOOT_S