KORG DS 8 SERVICE MANUAL

Page 1

DIGITAL SYNTH ESIZER

CONTENTS
1. SPECIFICATIONS ..................................... 1 6. P.C. BOARD ........................................... 21
2. MIDI IMPLEMENTATION ........................... 2 7. CHECK AND
3. STRUCTURAL DIAGRAM ....................... 12 ADJUSTMENT PROCEDURE ................... 27
4. BLOCK DIAGRAM .................................. 14 8. REFERENCE DATA ................................. 28
5. CIRCUIT DIAGRAM ................................ 15 9. PARTS LIST .......................................... 3O

Page 2

1. SPECIFICATIONS

Keyboard
Voice
Program

Function Mode

Voice Parameter Mode

Combi Parameter Mode

Panel Mode Switches
Keyboard Mode Switches
Programmer Controls
Performance Editor Controls

Balance Slider
Volume Slider
Display

Card Slot

Input Jacks

Output Jacks

MIDI Jacks

Power Consumption
Power Supply

Weight

Dimensions (W x H x D)
Supplied Accessories

MCHOl RAM Card:
MGR-02 RAM Card:
MCR03 RAM Card:

: Master Tune:

Transpose:

Foot Switch Assign:
Pedal Assign:
Memory Protect:
Save to RAM Card.
Load from RAM Card,
MIDI:

MIDI Filtering:

: Pitch:

Pitch EG:

080 1 Waveform:
OSC 2 Waveform:
OSC 1 Timbre EG:
OSC 2 Timbre EG:
080 1 Ampl. EG:
OSC 2 Ampl. EG:
Modulation Generator,

Portamento:
Joystick:
VeiOCity:
Aftertouch'
Assign Mode:

Voice Name:
Muit) Effect:

: Controller:

Modulation Generator:
Muiti Effect:

Multi Effect In/Out
Interval/Detune:
Key Split/Octave Shirt:

No. of Voices:
MIDI Receive Channel:
Pan:

:61 keys (C-C), Initial Touch, Aftertouch,
:8 voices simultaneously (Single Mode).
: 08-8:

100 Programs, 10 Combinations.

1 Bank (100 Programs, 10 Combinations).
2 Banks (200 Programs, 20 Combinations).
4 Banks (400 Programs, 40 Combinations).

+/- 50 cents.

+/- 12 semitones.

Program Down. OSC select, Velocity, Multi Effect, Aftertouch, Portamento
Volume, Timbre, Pitch Modulation Generator, Timbre Modulation Generator.
Internal Off/On. External Off/On

Transmit/Receive Channel, Omni Off/On, Local Off/On.

Active Sensing Off/On, Program Change Off/On. Control Change Off/On, Exclusive
Off/On,

Data Transfer.

050 1, 030 2. Detune

Start Level, Attack, Attack Level, Decay, Release, Release Level.

Type, Spectrum, Ring, Limit, Keyboard Track.

Type, Spectrum. Ring, Limit, Keyboard Track.

Timbre, EG intensity, Attack, Decay, Sustain, Release. Keyboard Track.

Timbre, EG intensity, Attack, Decay, Sustain, Release, Keyboard Track.

Level, Attack, Decay, Sustain, Release, Keyboard Track.

Level. Attack, Decay, Sustain, Release, Keyboard Track.

Waveform (Triangle, Sawtooth, Square. Sample & Hold), Frequency. Delay Time,
Pitch Intensity. Timbre/Ampl Intensity, Timbre Select (Off, 080 1, 080 2.

OSC 1 +2), Ampl. Select (Off, OSC 1, OSC 2, 080 1 +2).

Mode, Time

Bend Pitch (+/-1 octave max), Bend Timbre, Modulation Speed.

080 1 Timbre EG, 080 2 Timbre EG, OSC 1 Ampl EG, OSC 2 Ampl EG.

Pitch MG, Timbre, 080 1 Ampl, Level, OSC 2 Ampl, Level,

Poly/Unison, Trigger (Single/Muiti: in Unison Mode only), Detune (in Unison Mode
only).

Max. 10 characters.

Mode (Manual Delay, Long Delay, Short Delay, Doubling, Fianger, Chorus), Time,
Feedback, Speed/Modulation Frequency, Modulation intensity, Effect Level.
Source, Group 1-8 Off/On.

Source. Group 1-8 Off/On.

Source, Mode (Manual Delay, Long Delay. Short Delay, Doubling. Flanger. Chorus,
only when source is Combination)

In (A. B, A+ B), Out (A. B, A+B),

Interval (0-12 semitones), Detune (+/-25 cents).

Key Split Group 1 (Cl -CB), Key Split Group 2 (C1-CS), Octave Shift Group 1
(+ 1, + 2 octaves), Octave Shift Group 2 (- 1, -2 octaves).

Group 1-8 (max. 8 v0ices).

Group 1-8 (MIDI Channel 1-16).

Group 1~-8 (A. B, A+B),

:Program, Combination, Function Mode, Voice Parameter Mode, Combi Parameter Mode.

:Single. Layer, Double, Multi.

:Numeric keys (0-9). Int, Ext, Cursor keys (<, >), Write, Compare, Value slider, Up/Yes, Down/No.
:Timbre slider, EGI slider, EG2 slider, OSC Select (1, 2. 1 +2), Velocity (Off/On), Aftertouch (Off/On). Porta-

ment (Off/On), Multi Effect (Off/On). Multl Effect Select (Manual Delay. Long Delay. Short Delay. Doubling.

Flanger, Chorus),

: A-A + 8-8
:DvMax.

: LCD (Liquid Crystal Display), Backlit, 40 Characters x 2 Rows.
: 1
: Damper, Program Up, Assignable Pedal, Assignable Switch.
:Output (AIMono. B). Phones,

:iN, OUT, THRU.

: 16W,

: Local Voltage.

: 10 kg (21 lbs. 16 oz.)
:1024 X 94 X 317mm (40.3 X 3.7 x 12.5).
:AC Power Cord, Connection Cable,

*Specifications and exterior appearance are subject to change without notice due to product improvement.

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