1
2
VCC
VA C11
VCO
0.01u 50V
R18 100
C8
1K
RIBBON 10KB
2SC4617
1K NU
C5 CN1
R5 100K
3
R42 TP1 pitch
R22
TP2 gate
R53
LFO reset
SN74AHC14
VR2A
C30
10K B RK14J11A000G
10 R32 9
R36
4.7K
R30
R64
8
2.2K
VR5A 10K B
1K
R67 Q8
C12 NU
10K
2.2K
Q7
R37
2SC4617
47K
C26 R80 R77 C27 2
10K
LED1
0.01u
SML-E12UWT86
Q9
2SC4617
R48 R43
TP7 LFO
VCC
47
R49
Q11
2SC4617
47K
22K
C25
R79
1u
68K
6.3V 100u
6
6.3V 330u
10K
4 C3 C1 GND
6.3V 1u 330uF
27K
1K
C
100p
VA
R41
VCC
Bias
6
V-
5
V-
IC4E
IC2E
LM324
10u
IC2B
10K
LM324
C6
0.1u
C2
16V 10u
VCC C15
LM324
R9
11
TP3
R10 R7
V+
11
91K
LGY2209-0101FC
R66
IC5B
C13 0.1u
TP4 Vbias
12 SN74AHC14
GND
IC3G
FRAME GROUNDS
IC3F
13 IC3A
1
5 3
1u
C29
2
VDD SHTDN BYPASS GND
C28 0.1u
SN74AHC14
SN74AHC14
MODEL
D
TITLE
SCHEMATIC FOR PUBLIC RELEASE
monotron Details of this schematic are subject to change without notice. Any modification to any monotron will immediately void its warranty. Korg or any of its affiliates will not accept responsibility for any damages, personal loss or injury that may result from any modification to the device. 2
TPA6111A2DR
VR3B VR4B VR5B VR6B VR7B VR2B SW1C
820K
R6
0
68K
390
0
7 0.1u
0.1u
R3
V+
C7
VCC
C18
CN2
battery box AAAx2
6 5 4
C31 R65
7
R82
CN4
0
TP5
SLF6028T-4R7M1R6-PF VBAT VOUT EN FB TPS61071
VCC
C33 R83
1
14
+5V
VCC
23mm 0.2W
0.1u
R55
7
SW1B
VCC 4
SS-23D03 (6MM KNOB GE)
1
HNS-XXXX
270K
TPA6111A2DR
C32
POWER
1u
CN5 B2B-ZR(LF)(SN)
100p
IC5A R81 R47
XV09211YNPV20U(NC)1B10K
C4
3300p
VOLUME
audio
10K
47
1
4.7K
3.3K
Headphones
NU
SN74AHC14
C
1 IC1 2 SW 3 GND
XV09211YNPV20U1B10K
470
R31
11
IC3D
XV09211YNPV20U1B10K
LFO INT.
IC3E
2SC4617
CLEAR SHAFT
1K
10K
L1
C22
AMP
pitch cuttoff VA
R29
R12
R74
PATCH SELECT
SW1A
LFO
R33
VA
470
10K
18K
10K
VR7A 10K B
5.6K
R46
R52
C19 16V 10u
R76
SS-23D03 (6MM KNOB GE)
2SK433
R23 TP6 rate
C16
0.1u
R70 10K
R54
audio
2.2K
4.7K
RESONANCE
1
LM324
R78
R72
B
100K
F1
10K
2SC4617
1K
NU
220
IC4A
C24 16V 10u
cw
R25 Q6
3
C23
A
10K
10 LM324
R68
27K
R73
8
R24
1K
Q4
10K
R51
VCF gate
R44
0.01u
220K
VR4A 10K B
1K
2.2K
IC4B LM324
2SC4617
C10
1M
2SC4617
R28
R14
7 R59 2
5
Q10
C9
C20
R57
10K
6
cuttoff
LM3240.01u
2SC4617
10K
0.01u
XV09211YNPV20U1B10K
8
VA
Q3
R26
VA
9
R1110
330K
2SA1774 LFO RATE
100K
cuttoff
68K
VR6A 10K B
IC2C
2SC4617
R63
IC4C
1SS355 1SS355 330K
Internal Speaker
VA
R45
2SK433
R56
CUTOFF
R13
100 820 VR1 100 F-3362S B100OHM-MO
IC2A
R4
R1
IC4D
9 F3
cutoff TP9
R50
10K
1 R2
12
100K
6.8K
Bias
VCC
4.7K
LM324
2.2K
NU
R8
2
SFW4R-2STE1LF
pitch
VCC
Q12
2SC4617
14
R75
VCO enable
whole ribbon Vbe offset: 24.49mV@0deg 26.29mV@20deg 28.08mV@40deg
13
LM324
R19
VCC
B
10K
1u
Q14
D2 D1 R60
C21 3300p
Q2
IC2D LM324
TP8 VCO
4.7K
Q13
VCF
R62 330
R58 C14
R35
R15
1u
100K
SN74AHC14
100K
C17
4
SN74AHC14
10K
R17
14
63
VCC
R61
R39
CN3
IC3B
5
R16
13 12
IC3C
1K
0.01u
LGY2209-0101FC
2SK433
R27
IMX9
R20
1K
F2
Q1
150K
R21
A
R3810K
8
PITCH
VCC
LINE IN
R34
4
XV09211YNPV20U1B10K
R4010K
VA
Q5
2SA1774
R71 NU
10K B
4
R69 NU
VR3A
3
3
DATE
DESIGNED BY
2010.10.13 4
TATSUYA TAKAHASHI
D
