KORG RK 100 SERVICE MANUAL

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REMOTE KEYBOARD

aimas RK-1oo

CONTENTS
I. SPECIFICATIONS ................................. 2
2. MIDI IMPLEMENTATION ............................ 2
3, STRUCTURAL DIAGRAM ........................... 3
4. BLOCK DIAGRAM ................................ 4
5. CIRCUIT DIAGRAM ............................... 5
6. PC BOARD ...................................... 5
7. CIRCUIT DESCRIPTIONS ............................ 3
8. TROUBLESHOOTING CHART ......................... 12
9. PARTS LIST ..................................... 13

KEIO ELECTRONIC LABORATORY CORPORATION
TOKYO/JAPAN

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1. SPECIFICATIONS

Keyboard:
Octave:

Matched Model:

41 Keys (C-E)

H (60-100 at MIDI)

M (48-88 at MIDI)

L (36-76 at MIDI)

MIDI equipped synthesizer

Input Jack:
Output Jack:
Strap Pins:
Power Supply:

DC-IN

MIDI out (DIN socket)

2

UM-3 X G/AC adaptor (9V,
100mA minimum)

Program Select: Program number 0-63 at Dimensions: 1,110(W) X 293(0) X 69(H)
MIDI mm
Program Number Display: LED Weight: 4.4kg (with battery)
Bank-0 8 (Green) Accessories: Batteries (UM-3 X 6)
Programo7 (Red) MIDI cable (5m)
Control: Pitch bend wheel (Up, Down)
Modulation wheel (0-10)
Volume wheel (0-10)
Program up switch
Program down switch
Octave switch (H/M/L)
Modulation destination
1 (Modulation wheel/Joy
stick + Y direction)
2 (Joystick -- Y direction)
Program select (1-1-8<8,
0-63 atMIDI)
2. MIDI IMPLEMENTATION
Transmitted data
Status byte 2nd byte 3rd byte Description
100150000 Dkkkkkkk 00000000 NoteOffeventSOOO
10010000; Okkkkkkk 01000000 NoteOneventSOqO
10110000100000001 0vvvvvvv Modulation18004-
101130000100000010 0vvvvvvv Modulation2 8002--
1011;00003 00000111 0vvvvvvv Outpquoiume800?-
110 0.0 0 0 0f» 0 0 p p p P D D Programchange (.0 "'
1110.0000 00000000 Obbbbbbb Pitchbend EOOO"
1 1 1 1 1'11'0" ActiveSensing FE
Note:

I.

When power is turned on, the RK-IOO sends program
change (0 on MIDI), modulation, volume, and pitch
bend control change data according to positions of con-
trols on FIK-IOO

I Note number (kkkkkkk) can be changed by the octave

selector.
L = 36-76: M = 48-88: H = 339-100

31,4!0- 30773! /A'IIU

. Destination switch position has the following effects.

At "1 "1 MG wheel controls joystick +Y direction or
modulation wheel on a 2-wheel equipped synth.
At "2": MG wheel controls ioystick -Y direction only.

_2_

. Program number

MIDI.

(pppppp) covers the range of 0-63

. Output volume (vvvvvvv) range is 0-127 MIDI.

. Active sensing is sent every 200msec.