Korg DS-8 User manual

DIGITAL SYNTHESIZER
M SERVICE
MANUAL
CONTENTS
1. SPECIFICATIONS.
2. MIDI IMPLEMENTATION..
3. STRUCTURAL DIAGRAM
4. BLOCK DIAGRAM.
5. CIRCUIT DIAGRAM.
1 6. P.C. BOARD.21
2 7. CHECK AND
2 ADJUSTMENT PROCEDURE.27
4 8. REFERENCE DATA.28
5 9. PARTS LIST.30

i. drcuribAMUND
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
61 keys (C—C), Initial Touch, Aftertouch.
8 voices simultaneously (Single Mode).
DS8:
MCR-01 RAM Card
MCR-02 RAM Card
MCR-03 RAM Card
100 Programs, 10 Combinations.
1 Bank (100 Programs, 10 Combinations).
2 Banks (200 Programs, 20 Combinations).
4 Banks (400 Programs, 40 Combinations).
: Master Tune:
Transpose:
Foot Switch Assign:
Pedal Assign:
Memory Protect:
Save to RAM Card.
Load from RAM Card.
MIDI:
MIDI Filtering:
+ /- 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.
: Pitch:
Pitch EG:
OSC 1 Waveform:
OSC 2 Waveform:
OSC 1 Timbre EG:
OSC 2 Timbre EG:
OSC 1 Ampl. EG:
OSC 2 Ampl. EG:
Modulation Generator:
Portamento:
Joystick:
Velocity:
Aftertouch:
Assign Mode:
Voice Name:
Multi Effect:
OSC 1. OSC 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, OSC 1, OSC 2,
OSC 1 + 2), Ampl. Select (Off, OSC 1, OX 2. OX 1 + 2).
Mode, Time
Bend Pitch ( + /-1 octave max.), Bend Timbre, Modulation Speed.
OX 1 Timbre EG, OX 2 Timbre EG. OX 1 Ampl. EG, OX 2 Ampl. EG.
Pitch MG, Timbre, OX 1 Ampl. Level, OX 2 Ampl. Level.
Poly/Unison, Trigger (Single/Multi: in Unison Mode only). Detune (in Unison Mode
only).
Max. 10 characters.
Mode (Manual Delay, Long Delay. Short Delay, Doubling, Flanger, Chorus), Time,
Feedback. Speed/Modulation Frequency, Modulation Intensity, Effect Level.
: Controller:
Modulation Generator:
Multi Effect:
Multi Effect In/Out:
Interval/Detune:
Key Split/Octave Shift:
No. of Voices:
MIDI Receive Channel:
Pan:
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 —C8), Key Split Group 2 (Cl —C8), Octave Shift Group 1
(+1, +2 octaves). Octave Shift Group 2 (—1, —2 octaves).
Group 1 —8 (max. 8 voices).
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, EG1 slider, EG2 slider, OX Select (1, 2, 1 +2), Velocity (Off/On), Aftertouch (Off/On), Porta-
ment (Off/On), Multi Effect (Off/On), Multi Effect Select (Manual Delay, Long Delay. Short Delay, Doubling,
Flanger, Chorus).
A—A+B—B.
0—Max.
LCD (Liquid Crystal Display). Backlit. 40 Characters x 2 Rows.
1
Damper. Program Up, Assignable Pedal, Assignable Switch.
Output (A/Mono, 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.
NOTICE
Korg products are manufactured under strict specifications and voltages re¬
quired by each country. These products are warranted by the Korg distributor on¬
ly in each country. Any Korg product not sold with a warranty card or carrying^
serial number disqualifies the product sold from the manufacturer’s/distributor’s
...orror+w anH liahilitv This rponirpmnnts is for vour own Drotection and safetv.

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1. TRANSMITTED DATA
1-1. CHANNEL MESSAGES
STATUS
SECOND
THIRD
DESCRIPTION
ENA
1000 nnnn
Okkk kkkk
0100 0000 Note Off
kkkkkkk = 24-108 (61 key + Transpose)
A
1001
nnnn
Okkk kkkk
Ovw vwv
Note On
kkkkkkk = 24-108 (61 key + Transpose)
vvvvvw = 16-127
A
1011 nnnn
0000 0001 Owv vwv
Pitch Modulation (Joy Stick (+Y))
vvvvvw = 00-127
C
1011 nnnn
0000 0010 Oww ww
Timbre Modulation (Joy Stick (—Y))
vvvvvw = 00 — 127
C
1011 nnnn
0000 0110 Ovw vwv
Data Entry vvvvvw = 00-127
E
1011 nnnn
0000
0111
Owv
vwv
Volume (Volume Pedal)
vvvvvw = 00-127
C
1011 nnnn
0100 0000 0000 0000
Damper Off (Damper Pedal)
C
1011 nnnn
0100 0000
0111 1111
Damper On (Damper Pedal)
m
1011 nnnn
0100 0001
0000 0000
Portamento Off
ww
1011 nnnn
0100
0001 0111 1111
Portamento On
M
1011 nnnn
0110 0000
0000 0000
Data increment
E
1011 nnnn
0110 0001
0000
0000 Data Decrement
E
1100
nnnn
Oppp
pppp
Program Change
ppppppp = 00-99
P
1011 nnnn
Ovw vwv
Channel Pressure (After Touch)
vvvvvw = 00-127
C
1100 nnnn 0000
0000 Obbb bbbb
Bender Change (Joy Stick (X)) Note 1
bbbbbbb = 00 - 64-127
C
1110 nnnn
0111 1111 0111
1111
Bender Change (Max) (J.S (X)) Note 1
C
Remark: nnnn: MIDI Channel Number (0~ 15)
ENA: Trans Enable Mode
A = Always Enable
C = Control On Mode
P = P. Change On Mode
E = Exclusive On Mode
Note 1: Normally, the upper 8 bits change and the lower 8 bits are fixed at 00. However, the lower 8 bits many
change to 127 when the maximum data is input (in 128 steps).
0000H 4000H 7F7FH
(Min) (Center) (Max)
1-2. SYSTEM REAL TIME MESSAGES
STATUS
DESCRIPTION
1111 1110
Active Sensing
♦ Trans Enable at ACT ON.

(6) 1 COMBI DUMP REQUEST
BYTE
DESCRIPTION
1111
0000
Exclusive Status
0100
0010
K0RG ID 42H
0011 nnnn
Format ID 3nH (n = ch)
0001
0011
DS-8 10 13H
0001 1001
1 Combi Oump Request 19H
1111
0111
E0X
(7) 1 COMBI DUMP
BYTE
DESCRIPTION
1111 0000
Exclusive Status
0100 0010
KORG ID 42H
0011 nnnn
Format ID 3nH (n = ch)
0001 0011
DS-8 ID 13H
0100 1001
1 Combi Dump 49H
Oddd dddd
1 Combi Data (56 bytes)
Oddd dddd
1111 0111
EOX
(8) ALL COMBI DUMP REQUEST
BYTE
DESCRIPTION
1111 0000
Exclusive Status
0100
0010
KORG ID 42H
0011 nnnn
Format ID 3nH (n = ch)
0001
0011
DS-8 ID 13H
0001 1101
All Combi Dump Request 1DH
1111
0111
EOX
(9) ALL COMBI DUMP
BYTE
DESCRIPTION
1111 0000
1
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• — w»«y(niv OUUMG
0100
0010
KORG ID 42H
0011 nnnn
Format ID 3nH (n = ch)
0001
0011
DS-8 ID 13H
0100 1101
All Combi Dump 4DH
Oddd ddd
All Combi Dump (440 bytes)
Oddd
dddd
1111
0111
EOX
(10) PANEL MODE REQUEST
BYTE
DESCRIPTION
1111
0100
0011
0001
0001
1111
0000
0010
Exclusive Status
K0RG ID 42H
nnnn
Format ID 3nH (n = ch)
0011
0010
0000
DS-8 ID 13H
Panel Mode Request 12H
E0X

(10) PARAMETER CHANGE
BYTE
1111
0000
0100
0010
0011
nnnn
0001
0011
0100
0001
Oddd
dddd
Oddd
dddd
0000
OOOd
1111
0111
(11) DATA LOAD COMPLETED
BYTE
1111
0000
0100
0010
0011
nnnn
0001
0011
0010
0011
1111
0111
(12) DATA LOAD ERROR
1111 oooo
0100 0010
0011 nnnn
0001 0011
0010 0100
1111 0111
(13) WRITE COMPLETED
(14) WRITE ERROR
1111 0000
0100 0010
0011 nnnn
0001 0011
0010 0010
1111 0111
DESCRIPTION
Exclusive Status
K0RG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Parameter Change 41H
Parameter No.
Parameter Value LSB
Parameter Value MSB
E0X
DESCRIPTION
Exclusive Status
K0RG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Data Load Completed 23H
E0X
DESCRIPTION
Exclusive Status
K0RG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Data Load Error 24H
E0X
DESCRIPTION
Exclusive Status
K0RG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Write Completed 21H
EOX
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Write Error 22H
EOX
♦ Trans Enable at Exclusive ON.

(16) COMBI WRITE REQUEST
BYTE
DESCRIPTION
1111
0000
Exclusive Status
0100
0010
KORG ID 42H
0011 nnnn
Format ID 3nH (n = ch)
0001
1011
DS-8 ID 13H
0001 1010
Combi Write Request 1AH
Oddd
dddd
Combi Program No. 00 - 09H
1111
0111
E0X
•Receive Enable at Exclusive ON.

(6) P ANEL MODE
BYTE
DESCRIPTION
1111 0000
Exclusive Status
0100 0010
K0RG ID 42H
0011 nnnn
Format ID 3nH (n = ch)
0001 0011
DS-8 ID 13H
0100 0010
Panel Mode 42H
0000 Oddd
Panel Mode Data ddd = 000: Program
1111 0111
E0X 001: Voice Parm
010: Combi Parm
011: Function
100: Combi
(7) P ANEL MODE CHANGE
BYTE
DESCRIPTION
1111 0000
0100 0010
0011 nnnn
0001 0011
0100 1110
0000 Oddd
1111 0111
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Panel Mode Change 4EH
Panel Mode Data ddd = 000: Program
E0X 001: Voice Parm
010: Combi Parm
Oil: Function
100: Combi
(8) K EYBOARD MODE
BYTE
DESCRIPTION
1111 0000
0100 0010
0011 nnnn
0001 0011
0100 1011
0000 OOdd
1111 0111
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Keyboard Mode 4BH
Keyboard Mode Data dd = 00: Single
E0X 01: Layer
10: Double
11: Multi
(9) KEYBOARD MODE CHANGE
BYTE
DESCRIPTION
1111 0000
0100 0010
0011 nnnn
0001 0011
0100 1010
0000 OOdd
1111 0111
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Keyboard Mode Change 4AH
Keyboard Mode Data dd = 00: Single
E0X 01: Layer
10: Double
11: Multi

1-3. SYSTEM EXCLUSIVE MESSAGES
(1) DEVICE ID
~ BYTE__
1111 0000
0100 0010
0011 nnnn
0001 0011
1111 0111 _
(2) 1 VOICE DUMP
BYTE __
1111 0000
0100 0010
0011 nnnn
0001 0011
0100 0000
Oddd dddd
Oddd dddd
1111 0111 __
(3) ALL VOICE DUMP
1111 0000
0100 0010
0011 nnnn
0001 0011
0100 1100
Oddd dddd
Oddd dddd
1111 0111
(4) 1 COMBI DUMP
BYTE
1111
0000
0100
0010
0011
nnnn
0001
0011
0100
1001
Oddd
dddd
Oddd
dddd
1111
0111
(5) ALL COMBI DUMP
1111 0000
0100 0010
0011 nnnn
0001 0011
0100 1101
Oddd dddd
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
EOX
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
1 Voice Dump 40H
1 Voice Data (96 bytes)
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
All Voice Dump 4CH
All Voice Data (7544 bytes)
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
I Combi Dump 49H
I Combi Data (56 bytes)
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
All Combi Dump 4DH

2. RECOGNIZED RECEIVED DATA
2-1. CHANNEL MESSAGES
STATUS
SECOND
THIRD
DESCRIPTION
ENA
1000
nnnn
Okkk
kkkk
Oxxx xxxx
Note Off Note 2
A
1001 nnnn
Okkk
kkkk
0000
0000
Note Off Note 2
A
1001 nnnn
Okkk
kkkk
Owv
ww
Note On Note 2
A
wvwvv = 1-127
1011
nnnn
0000
0001 Owv
ww
Pitch Modulation
c
1011
nnnn
0000
0010
Owv ww
Timbre Modulation
c
1011
nnnn
0000
0110 Owv
ww
Data Entry wwvw = 00-127
E
1011
nnnn
oooo
0111
Owv WW
Volume
c
1011 nnnn
0000 1010
OOOx
xxxx
Panpot (A)
c
1011
nnnn
0000 1010
001 x
xxxx
Panpot (A + B)
c
1011 nnnn
0000 1010
OlOx
xxxx
Panpot (A + B)
c
1011
nnnn
0000
1010 01 lx
xxxx
Panpot (B)
c
1011
nnnn
0100
0000
0000
0000
Damper Off
c
1011
nnnn
0100
0000 0111
1111
Damper On
c
1011
nnnn
0100 0001
0000
0000
Portamento Off
c
1011
nnnn
0100
0001
0111 1111
Portamento On
c
1011
nnnn
0110 0000
0000
0000
Data increment
E
1011
nnnn
0110 0001
0000
0000
Data Decrement
E
1011 nnnn
0111
1010
0000
0000
Local Off
A
1011
nnnn
0111
1010
0111 1111
Local On
A
1011
nnnn
0111
1011
0000 0000
All Notes Off
A
1011
nnnn
0111
1100
0000
0000
OMNI Off (A.N. Off)
A
1011
nnnn
0111
1101
0000 0000
OMNI On (A.N. Off)
A
1011
nnnn
0111
1110
Oxxx xxxx
(All Notes Off)
A
1011
nnnn
0111 1111
0000
0000
(All Notes Off)
A
1100
nnnn
oppp
pppp
Program Change Note 3
P
1101
nnnn Owv
ww
After Touch
C
1110 nnnn
Oxxx xxxx
Obbb
bbbb
Bender Change
c
Remark: nnnn: MIDI Channel Number (0- 15)
xxxx: Don’t Care
ENA : Receive Enable Mode
A = Always Enable
C = Control On Mode
P = P. Change On Mode
E = Exclusive On Mode
Note 2: Data of notes 24-108 will accepted as they are. Data outside the range (0 - 23,109-127) will be shifted
an octave at a time until the data falls in the range.
Note 3: PROGRAM modes can be selected from numbers 00 to 99. 0 to 9 can be used to select COMBINA¬
TION PROGRAM modes. However, when three digit numbers are entered into the PROGRAM mode
only the last two digits are valid (for example, 100 is received as 00; 127 is received as 27) If two diqit
numbers are entered into the COMBINATION PROGRAM mode, only the final digit is valid (for exam¬
ple, 10 is received as 0; 127 is received as 7).
2-2. SYSTEM REAL TIME MESSAGES
STATUS
DESCRIPTION
1111 1110
* RpriAivo Pnahlo a* ARTIOM
Active Sensing

(11) P ANEL MODE CHANGE
DESCRIPTION
(12) K EYBOARD MODE REQUEST
1111 0000
0100 0010
0011 nnnn
0001 0011
0001 1011
1111 0111
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Panel Mode Change 4EH
Panel Mode Data
E0X
ddd = 000: Program
001: Voice Parm
010: Combi Parm
Oil: Function
100: Combi
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Keyboard Mode Request 1BH
EOX
(13) K EYBOARD MODE CHANGE
1111 0000
0100 0010
0011 nnnn
0001 0011
0100 1010
0000 OOdd
1111 0111
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Keyboard Mode Change 4AH
Keyboard Mode Data
EOX
dd = 00: Single
01: Layer
10: Double
11: Multi
(14) PARAMETER CHANGE
BYTE
1111
0000
0100
0010
0011
nnnn
0001
0011
0100
0001
Oddd
dddd
Oddd
dddd
0000
OOOd
1111
0111
(15) VOICE WRITE REQUEST
1111 0000
0100 0010
0011 nnnn
0001 0011
0001 0001
Oddd dddd
1111 0111
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Parameter Change 41H
Parameter No.
Parameter Value LSB
Parameter Value MSB
EOX
DESCRIPTION
Exclusive Status
KORG ID 42H
Format ID 3nH (n = ch)
DS-8 ID 13H
Voice Write Request 11H
Program No. 00-63H
EOX