Casio LK-56

[iwillbeacircuitbender]

So, I'm trying to bend this
I see 2 SMD chips
One is an OKI L9040-B02
The other is most likely the panel CPU
Shouldn't there be a ROM chip where all the preset sounds are stored?

And this one does have the CD sound source, or something, as well as the CTK 541, LK 30, and other Casio CTK's from 1999-2000, or it's not really labeled as ZPI, AHL, etc. The MZ 2000 that I have is ZPI for the tone generation, which is also bent. No switch though, it's permanently shorted. Still works though, just the sound is buggered