Yamaha organ

I have the 13 foot pedals of the Yamaha BP-2 foot-pedal keyboard.

I know nothing about the electronic part of the unit since it is missing.
I would enjoy talking to any one who is familiar with this Yamaha system. I'd certainly love to obtain a schematic of the electronics as well as any information about it.
I built my own analog bass pedals 20 years ago from the schematic I found of a unit made by Maas Rowe Carillions. It has worked perfectly for all this time.

I would be happy to share this schematic for anyone who would be brave enough to construct it.

Can anyone help me find out anything about this arcane instrument?
The schematic would be most appreciated.

Cheerio, Bob Meuse museaudioarts@macdsl.com

I believe what you need is the Yamaha SK-50D service manual, which should have info on this pedal unit.

This can be purchased here:

**broken link removed**

If you need the user manual, that can be downloaded here:

https://www.electro-tech-online.com/custompdfs/2009/04/SK50DEPDF.pdf

Hope this helps.