Korg Monologue Service Manual
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Korg Monologue Service Manual

Monophonic analogue synthesizer
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MONOPHONIC ANALOGUE
SYNTHESIZER
monologue
SERVICE MANUAL
TABLE OF CONTENTS
Assembly (Exploded) view: 2
Harness: 12
Test Mode: 13
Issued: Jan. 13, 2017
Ver. 1.0
©2017 KORG INC.

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  • Page 1 MONOPHONIC ANALOGUE SYNTHESIZER monologue SERVICE MANUAL TABLE OF CONTENTS Assembly (Exploded) view: 2 Block Diagram: 3 Schematic Diagram: 4 Harness: 12 Test Mode: 13 Parts List: 16 Issued: Jan. 13, 2017 Ver. 1.0 ©2017 KORG INC.
  • Page 3 Panel PCB (KLM-3622) Main PCB (KLM-3621) Synth 3.3ADV 3.3VD +3.3V 3.3VD 3.3VD selector VR x15 MB9BF121M GPIO STM32F030 MB9BF324M RESET BU4227G-TR 2pole LPF - Internal Clock 48MHz - 72MHz (External Crystal) X0/X1 4MHz Crystal - Flash 64KB - Flash 256KB - 72MHz (External) 3.3VD - SRAM 8KB...
  • Page 4 RST_THIS BOOT_THIS TX_THIS RX_THIS OSC_TR SYNTH_CPU.SchDoc SYNTH.SchDoc LINE_IN MAIN_CPU.SchDoc LINE_IN OSC_TR TX_NEXT RX_NEXT BOOT_NEXT RESET_NEXT DA_DRY DA_DRY DA_WET DA_WET PWM_METRONOME PWM_METRONOME TX_VOICE FX.SchDoc OSC_SIG OSC_SIG FX_OUT FX_OUT DRAWN BY DESIGNED BY CHECKED BY CHECKED BY MODEL TITLE DRAWING No. DATE KOD-A31245 REMARK REVISAL REASON...
  • Page 5 3.3VD 3.3VD C237 V 10 Ro 10 RL 32 Io (peak) 0.073 Vo (p-p) 4.672 Po (| ) 0.085 Rw 0.027 ICw 0.38 IC18A 47p 5% MAIN CPU NJM4556AM R317 C238 47p 5% OUTPUT C151 C152 FX_OUT R195 1000p 1000p USB1 R194 R196...
  • Page 6 PWM FILTERS VOICE CPU R294 R285 R296 IC9G SN74LV04APWR 1.1K 1% 270K 1% 56K 1% DA_NOTE1 3.3VA BOOT_THIS CV_PITCH1 R261 3.3VA BOOT_THIS C208 C211 3.3v IC9A 47p 5% SN74LV04APWR 4700p R312 IC14 MB9BF121MPMC-G-JNE2 R309 R277 R286 R287 100K PWM_OCT1 fc = 10kHz RESET_THIS -3.3~3.3 RST_THIS...
  • Page 7 OSC_TR1 3.3VA 3.3VA VCA1 VCA2 C249 R137 R140 R175 R174 R178 R177 4700p 5% 2.2K 2.2K C288 R139 R138 2.2K 2.2K IC27E 0.01u 0.01u 10u Z TL064CPWR VCO1 R343 R114 R113 C130 C133 100K 100K C289 5.6K 0.45-1.55 C262 C104 10u Z 2SA1162-GR 2SA1162-GR...
  • Page 8 PWM FILTERS R339 91K 1% TP12 C244 33p 5% CV_DRY R340 R333 R332 fc = 10kHz DA_DRY -3.3~3.3 CV_DRY 1.1K 1% 43K 1% 120K 1% 1.1V IC19B C137 TL064CPWR C246 C245 47p 5% 0.015u 680p IC23E IC6E C138 10u Z TL064CPWR TL084CPT 10u Z...
  • Page 9 To Main Board CN1B Startup ACK OLED1 CK_PNL N.C.(GND) OLED MODULE TX_PNL RX_PNL RESET_PNL 3-wire SPI BOOT_PNL 3.3VRef 3.3VD' 3.3VD'' BS0:1 VDDB N.C. BS1:0 0.1u 10uZ 100u 6.3V BS2:0 1000p HNS-4674 PANEL CPU GND_OLED 3.3VD RES# D/C# AVR-M1608C120MT6AB AVR-M1608C120MT6AB 1000p R/W# 100K AVR-M1608C120MT6AB...
  • Page 10 Polyshine F16K-1467A 10kB AD[2..0] AD[2..0] TEMPO VCO1 LEVEL SHAPE 1 SHAPE 2 CUTOFF PITCH1 RESONANCE VCO2 LEVEL 3.3VRef 3.3VRef 3.3VRef 3.3VRef 3.3VRef 3.3VRef 3.3VRef 3.3VRef 3.3VRef AD_SEL0 AD_SEL1 VR10 VR11 VR13 VR12 0.1u AD_SEL2 SN74LV4051APWR 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u...
  • Page 11 LED MATRIX SW MATRIX Tact SW 3.3VD Toggle SW 3.3VLED_ SKRGAQD010 h=9.5mm black LED/SW_SEL[7..0] TS-23E01-AC18-NI 2P3T 0.1u TS-23E02-AC18-NI 2P3T w/spring return LED/SW_SEL[7..0] 10uZ TS-22E01-AC18-NI 2PDT LED/SW_SEL0 right side left side DTB113EK LED/SW_SEL1 LED/SW_SEL0 LED/SW_SEL2 LED/SW_SEL1 LED/SW_SEL3 PLAY LED/SW_SEL2 STEP1 STEP9 OCTAVE LFO MODE LED/SW_SEL4...
  • Page 12 HNS-4673 HNS-4674 (MAIN-KEYBOARD) (MAIN-PANEL) WHITE WHITE ORANGE WIRE: UL-1007 CSA TR-64 AWG28 GREEN WIRE: UL-1007 CSA TR-64 AWG26 HOUSING: JSY A2001H-10P HOUSING: JSY B2011HV-10P TERMINAL: JSY A2001T TERMINAL: JSY B2011HV-TB HOUSING: JSY A2001H-16P HOUSING: JSY A2001H-16P TERMINAL: JSY A2001T TERMINAL: JSY A2001T HNS-4675 HNS-4676...
  • Page 16 KLM-3621 [TOP]USB1 510320516230 OPAMP TL064CPWR KLM-3621 [TOP]IC11, IC12, IC15, IC19, IC20, IC23, IC27 510C93523621 CIRCUIT ASS'Y BOARD KLM-3612 ASSY(DATA) MONOLOGUE KLM-3621 510200515516 VARISTOR AVR-M1608C120MT6AB KLM-3622 [TOP]VZ1, VZ2, VZ3, VZ4, VZ5, VZ6, VZ7 [TOP]LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8,...

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