Korg PE-1000 MIDI kit retrofit Installation manual Rev A03.1

Welcome to the metric system zone. Here we work with precision things and all dimensions are metric. 1" = 25.4mm. And yes, you need schematic reading skills.

This kit is pretty universal and contains two different set of screws and full set of ribbon cables. For Korg PE-1000 you will have unused 4 M3 screws and nuts for them. Also, you will need to do simple modification on this board for divide common key contacts bus to  25+35 pattern. Except 12+12+12+12+13 on this board. See more below on this page.

Installation:
To your good usability select the friendly place to mount the LED, MIDI connector, button and PCB.
Drill all holes that required and mount connector, LED and button before soldering wires of coarse. 

Drill dimensions:
MIDI jack (DIN5) = 18mm.
LED holder = 6mm.
Push button = 12.5-13mm.
Be careful with drilling hole for button, it have so small range to get hole too big.
Holes for wood screws is up to you, 1-1,5mm. Mostly in not needed and screws can be tighten without predrilled holes. 

ZOOM

Board dimensions and distance between screws:
Dimensions 102x50mm. Height 14mm with inserted connectors.
Holes diameter 3.5mm.
Mounting outline and hole drills draft for board example sticker paper included.

Do not allow the board to bend, it can break the board. 

All ribbon cables are 90cm. long, enough for placing all connections and you can cut extra length.
Panic button is not included in the kit. In case of panic - enough turn off and turn on the synth. If you prefer to install it part number is E-Switch RP3502MABLK

This picture shown:
First (1) pin/wire on all connectors. First wire will be start from this side.
J1,J3,J4 jumpers that divide common rails for every octave separate or split.
For Korg PE-1000 they should be close with solder. Leave only J2 open on this step. 
Modification: Carefully lift up Pin 10 of IC marked by yellow circle. Use correct iron tip and lift it with nipple or something that can fit, solder wire to this lifted pin. Another end of this wire solder to left pad of J2. 

Bottom side jumper J5 should be close for Korg PE-1000
The next picture shows the pinout for X6 connector ribbon cable and pin number of wires:
Same you can see on bottom side of PCB for more convenience.

 You will need to connect wire 4 (GND) with LED and button. All other wires in this kit required only one point of soldering. 

(7) V+ and (8) GND should be soldered on the next points on power supply:

So, now time to soldering key contact wires: All next connectors should be soldered to each key contact

Board pinout and MIDI note:

Solder wires to key contacts and common bus. Find key contacts for note F (Fa) on the first octave and solder wires from the (Yellow) connector. Starting from wire 1. When you finish it, your last wire will be 12 and note (E) on this octave.  Repeat all this on every octave.  Wire 13 on X2 should be soldered to left common bus (group of 25 keys).
On octave 5 (RED), also start from wire 1 - F (Fa). Wire 13 should be soldered to right common bus (group of 35 keys).