KORG DDM 110 DDM220 SERVICE MANUAL

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PROGRAMMABLE DIGITAL DRUM MACHINE

mmfifi DDM-110I220

CONTENTS
1 SPECIFICATIONS ................................. 2
2. STRUCTURAL DIAGRAM ........................... 3
3. BLOCK DIAGRAM ................................ 4
4. CIRCUIT DIAGRAM ............................... 6
5 PC BOARD ...................................... 9
6A ADJUSTMENT PROCEDURE ......................... 10
7. CIRCUIT DESCRIPTIONS ............................ H
8. TROUBLESHOOTING TABLE ......................... 15
9. PARTS LIST ..................................... 16

KEIO ELECTRONIC LABORATORY CORPORATION
TOKYO/JAPAN

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1. SPECIFICATIONS

DDM110

Tone Generators: Bass Drum, Snare Drum, Rimshot, High
Tom, Low Tom, Closed High-Hat. Open High-Hat, Cymbal,
Handelaps.

Accent: All instruments; ON/OFF; Step

Tempo Control: Coarse (SLOW ~ FAST); FINE (+ ~ -);
Tempo indicator

Volume: Master; Metronome; HI HAT, SYMBAL

Pattern Keys: Pattern Mode, Instrument Mode, Initial Mode,
Record Mode

Song Keys: Song Mode, Pattern Mode, Edit Mode, Record
Mode

Number Keys (Sound Source Keys): Pattern Number Select,
Song Number Select, Instrument Select, Initial Select,
Pattern Erase, Song Initial Bar Select, Repeat, Repeat Time
Select Song Repeat (ON/OFF), Insert, Delete, End, Memory
Avail, Tape Interface (Save, Load, Verify)

Record Switch: ENABLE/DISABLE

START/STOP Key: START/STOP

Enter Key: Enter, Step Up/Down, Cancel

Shift Key: Enter Key Function Select; Continue Start;
Instrument Erase

Pattern Memory: 32 Patterns (Maximum number of steps:
32 for patterns numbers 1 ~ 16; 16 for pattern numbers
17 ~ 32)

Song Memory: 6 Songs: Maximum Memory Capacity:

385 ~ 390 bars

Display: Pattern Number, Song Number, Bar Number,
Step Number, Beat Count, Key Number, Memory Avail,
Tape Interface Modes, Battery Check

Sync: 5-Pin DIN Jack lN/OUT Switch

Tape Interface: Tape Switch (DISABLE/FROM/TO),
FROM Jack, T0 Jack

Inputs: DC 9V; Start/Stop ( 1. GND)

Outputs: Stereo Out (R/MIX, L), Phones, Trigger Out

( 1 GND)

Power Supply: Six 1.5V Penlight AA size (SUM-3)
batteries or AC adaptor (DC 9V, SOOmA); Power Switch
Dimensions: 226(W) x 196(0) x 49(H) mm

Weight: 8809 (including batteries)

Supplied Accessories: Shielded Audio Cord (2.5m),
Batteries (UM-3 x 6), AC Adaptor

DDM220

Tone Generators: Hi Conga, Lo Conga, Timbale, Wood
Black, Cowbell, Hi Agogo, Lo Agogo, Cabasa, Tambourine
Accent: All instruments; ON/OFF; Step

Tempo Control: Coarse (SLOW ~ FAST); FINE (+ ~ -);
Tempo indicator

Volume: Master; Metronome; HI HAT, SYMBAL

Pattern Keys: Pattern Mode, Instrument Mode, Initial Mode,
Record Mode

Song Keys: Song Mode, Pattern Mode, Edit Mode, Record
Mode

Number Keys (Sound Source Keys): Pattern Number Select,
Song Number Select, Instrument Select, Initial Select,
Pattern Erase, Song Initial Bar Select, Repeat, Repeat Time
Select Song Repeat (ON/OFF), Insert, Delete, End, Memory
Avail, Tape Interface (Save, Load, Verify)

Record Switch: ENABLE/DISABLE

START/STOP Key: START/STOP

Enter Key: Enter, Step Up/Down. Cancel

Shift Key: Enter Key Function Select; Continue Start;
Instrument Erase

Pattern Memory: 32 Patterns (Maximum number of steps:
32 for patterns numbers I ~ 16; 16 for pattern numbers
17 ~ 32)

Song Memory: 6 Songs; Maximum Memory Capacity:
385 ~ 390 bars

Display: Pattern Number, Song Number, Bar Number,
Step Number, Beat Count, Key Number, Memory Avail,
Tape Interface Modes, Battery Check

Sync: 5-Pin DIN Jack lN/OUT Switch

Tape Interface: Tape Switch (DISABLE/FROM/TO),
FROM Jack, T0 Jack '

Inputs: DC 9V; Start/Stop ( 1 GND)

Outputs: Stereo Out (PI/MIX, L), Phones, Trigger Out

( 1 GND)

Power Supply: Six 1.5V Penlight AA size (SUM-3)
batteries or AC adaptor (DC 9V, 300mA); Power Switch
Dimensions: 226(W) x 196(0) x 49(H) mm

Weight: 8809 (including batteries)

Supplied Accessories: Shielded Audio Cord (2.5m),
Batteries (UM-3 x 6), AC Adaptor