Tubbutec OrganDonor User manual

Tubbutec OrganDonor
Installation manual for Kawai SX-210
Tools you will need:
•Soldering iron
•Wire stripper
•Metal drill 3 5mm (or similar)
•Metal drill for a 15mm hole (stepping drill for example)
•Center punch
•Screw driver
Included in the kit:
•OrganDonor Main Board
•OrganDonor 8x8 Matrix Interface Board
•Analog switch connection: 1x16 – 55cm
•Interconnect cable 22cm
•Midi connector assembly
•Power connector
•Learn button
•8x M3x10mm standoff
•4x M3 nylon washer
•4x M3x6mm bolt
•4x M3 nut
•Midi socket drill guide
•2x M3x8 bolt, 2xM3 nut for midi socket

Principle of operation
OrganDonor uses analog switches to simulate keyboard presses directly
The Kawai SX-210 uses a matrix keyboard, and therefor we created the
special 8x8 matrix board That means you have to solder just 16 wires
Installation
Remove the 4 screws from the top left pcb and install 4 10mm standoffs
and the 4 nylon washers
Mount the mainboard on top of the 8x8 matrix board using 4 of the
10mm standoffs, the 4 M3x6 bolts and 4 M3 nuts Connect the 10pole
ribbon cable as shown Use the 4 screws you just removed from the top
panel to secure the matrix board on the 4 standoffs

Power connections
Locate the power header on the top left corner of the voiceboard
Remove the voiceboard, take care not to damage the plastic standoffs
Flip the voiceboard Solder the power connections wires to the bottom
side like shown Plug the power wire assembly in the mainboard

Keyboard connections
Locate the 2 keyboard connection headers on the left side of the
mainboard

Remove the mainboard from the case and flip it Plug in the 16pole
ribbon cable to the matrix board Solder the 16 wires of the ribbon cable
to the bottom side as shown Wire one is the one with the red stripe

MIDI connection
Attach the drill aid to the case and use a center punch to mark the drill
holes We placed the MIDI jack to the right of the Kawai logo on the back
side
Drill the holes 2X 3,2mm for the mounting holes, 15mm for the MIDI
jack For the 15mm hole you can either use a step drill or a screw hole-
punch Install the MIDI jack and plug it in the main board

Use cable ties to tidy up the wire assemblies The completed installation
should now look like this: