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Korg Volca Bass Service Manual page 7

Analogue bass machine
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1
2
SYNC INPUT
3.3VD
R152
1K
SYNC CN
A
WD1
MC2840
CN3
C96
R157
L3
L
0.1u
22K
LJE0368-4R
R162
R154
100K
150K
C102
C103
1000p
1000p
MIDI INPUT
MIDI1
PC1
R114
2
2
0
D11
1
C84
CE
R127
R126
3
1
0
220
LN-0506-005
B
hidden
R111
47
TxD MIDI
TX
R108
47
3.3VD
VD
C74
CE
GND
ACP3225-102-2P-T000
or ACM3225-601-2P-T001
C20
C
DJ1
L2
1
1
4
CE
2
2
3
3
C19
C10
LD-0214C-1.65
NU
NU
FU1
bat(+)
TF16AT 1.25 T TD
bat(-)
D
MARK
REVISAL REASON
DATE REVISED APPROVED
1
2
3
SYNC RISE
R155
Q7
2SC1623
100K
+5V
R159
10K
C95
47p J
SYNC FALL
R158
R156
470K
Q8
2SC1623
Q9
220K
2SC1623
R151
47K
D12
+5V
3.3VD
5
3
6
C78
R119
4
5
CE
1K
3
1
4
RxD MIDI
5V POWER SUPPLY
BAT LO
RB051L-40TE25 (S)
IC3
D2
2
VIN
3
C21
VIN
5
CE
C16
SYNC
8
16V/100uF
VINA
R17
C14
470K
CE
9
AGND
RB051L-40TE25 (S)
7
D1
LBI
4
EN
R16
100K
R21
100K
SW1A
D3
SKRGADD010
POWER SW
DT9
3
4
5
+5V
5
HP disable
3
C99
CE
R12A163EA C6-K3.0L R12W228EA
L1
+5V
TPS62112RSAR
for current check
15
SW
14
SW
R7
0
10
FB
R9
1M
13
PG
hi if good
6
LBO
lo if lo
PWR CTRL
D4
PWR SW
4
5
6
HP AMP
C98
100p J
R160
22K
C97
R161
2
HP AUDIO
22K
1u Z
C114
R183
6
22K
1u Z
IC16A
TPA6111A2DR
R182
22K
TPA6111A2DR
C113
100p J
IC16B
VDD
SHTDN
C110
C92
CE
6.3V/100uF
SYNC OUTPUT
BYPASS
GND
R166
+5V
4.7K
R170
SYNC OUT
10K
SP AMP
+5V
SP EN
R196
R199
100K
SP AUDIO
0
shutdown for <0.35v
C129
0.01u
1
8
EN
OUT-
220K
2
7
R197
NC
GND
3
6
IN+
VDD
4
5
IN-
OUT+
C132
C128
R198
1000p
C131
0.01u
IC18
C135
220K
6.3V/330uF
1u Z
TPA2006D1DRBR
R201
C130
10
0.047u
DRAWN DESIGNED CHECKED
TSE
Kobayashi
6
7
8
+5V
DT17
R153
100K
R146
22K
HP CN
R147
33K
6.3V/330uF
C120
L5
L
1
CN5
6.3V/330uF
C121
L6
L
7
LJE0368-4R
0.022u x4
CN4
C109
R169
1u Z
470
L4
R184
1K
L
LJE0368-4R
Q12
2SC1623
R174
100K
C116
C115
1000p
1000p
HNS-4270
L7
black
C136
SP-
NU
red
SP+
HNS-4269
L8
C134
C133
1000p
1000p
CE: 0.1uF Z
D: 1SS355ST(A)
L: BLM18BD102SN1D (S)
WD: MC2840-T112-1 (S)
NPN: 2SC1623-T1B-A<L6/L7>(S)
PNP: 2SA812-T1B-A M5-7 M6 RANK(S)
FET: 2SK433-T112-1E (S)
DTC: DTC114EUA T106(S)
DTA: DTA114EUA T106(S)
APPROVED
MODEL:
X-12210
TITLE:
SCHEMATIC 3/3
Tatsuya
Tatsuya Kenichi
Takahashi
Takahashi
Nakamura
KLM-3201 JACK
DRAWING NO:
DATE:
KOD-A30999
2013/03/20
7
8
A
B
C
D

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