Help for very first ciruit bending - casio ct-636

[zhabka]

Hi,  I recently came onto an old Casio Tonebank CT-636 because no one else in my family wanted it.  I had never tried circuit bending before and I figured that this would be a good first project.

SO just to get things started, I was wondering where I would be able to find a circuit diagram for this keyboard so I can get an idea of where I would want to start making connections.  Or if someone can even just give me an idea of what kind of components I should look for when I open it up.  Any advice is welcome!

[Matt the Modulator]

looks like your the first i have never seen a bent ct-636 post up a pic of the circuit board