Korg MONOLOGUE Service Manual

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DESIGNED BYDRAWN BY CHECKED BY CHECKED BY MODEL
DRAWING No. DATE
TITLE

KOD-B40455
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REVISED BYDATEREMARK REVISAL REASON


HP
Output
(Mono)
AudioIn
MIDI IN
USB
(Mono)
MB9BF324M
STM32F030
VR x15
MIDI OUT
Panel PCB (KLM-3622) Main PCB (KLM-3621)
RESET
SIN, SOT, SCK
GPIO
MISO, MOSI, SCK
serial
GPIOMD0
boot
command UART
SOT
boot
GPIO
GPIO
command& Firmware write UART
SIN
resetreset
TactSW x24
LED x33
OLED
Synth
SIN
RESET
MD0
SOT
MB9BF121M
PWMAD
GPIO
3
2
8
8
GPIO
8
PWM
5
GPIO
8
3wire-SPI
3
2
SOT, SCKSIN, SCK
RESET
RESET
GPIO
GPIO
GPIO
5
8
LMK-25FL
BU4227G-TRRESET
X0/X1 4MHz Crystal
SIN
SOT
UART
INT
2
GPIO
11
3.3VD
analogue synthesizer
PWM
2control
3.3VD
SOT SIN
+5V
A/D
GPIO
3.3VD(Logic)
selector
Power
+9V
+3.3V/5V/-5V
3.3VD+3.3V
3.3ADV
3.3VD
3.3VLED
3.3VD
3.3VD
Master Vol
NJM4580
NJM4556
(Panel)
USB
Mute
SYNC OUT
SYNC IN
MUX
2pole LPF
11
CV
DA
2
5
6
7
A/D
tuning pulse
wave for check
control
GPIO
GPIO
128x64 dot
selector
AD
5
- Internal Clock 48MHz
- Flash 64KB
- SRAM 8KB
- 64pin
- 72MHz (External Crystal)
- Flash 256KB
- SRAM 32KB
- 80pin
selector
Encoder x1
2
GPIO
read
read
- Flash 96KB
- SRAM 16KB
- 80pin
- 72MHz (External)
D+, D-
VCO1
VCF VCA
+
VCO2
Noise
KA-350
TX, RX
command
Firmware update
4MHz Crystal
X0/X1
Effect
2pole LPF
12dB
sync/ring
LPF
GPIO
Power Control
3
GPIO
Power SW
3.3VD
3.3VD +5V
-5V
TPS62112
Power
control
3.3VD
TLV70033DCKR
ToggleSW x11
OLED BOARD(KLM-3587)
Sync Interface
MIDI Interface
FX RTN
TPS62112
TLV70033DCKR
2
2
GPIO
INT
Oscillo Trigger
Drive VCA
VCA
+

Korg MONOLOGUE Specifications

General

Product type	Analog synthesizer
Product color	Silver
User presets quantity	20
Keyboard number of keys	25
Preset programs quantity	80
Display type	OLED
Built-in display	Yes
Headphone outputs	1
Battery type	AA
Operating time	8 h
DC input voltage	9 V
Power source type	AC, Battery
Number of batteries supported	6

Weight and Dimensions

Depth	276 mm
Width	350 mm
Height	76 mm
Weight	1700 g