modification of Korg Poly800

[prof. Antonio Guerrieri]

	Hi All,

	I have recently purchased a reversed key Korg Poly 800 and I think
it is not so bed. Unfortunately, no analog inputs are present on this
machine until......

	This machine has a joystick control used to "continuosly" modify
the pitch of keyboard as well as the DCO and VCF modulation. So the idea is
to replace the CV sources provening from the internal joystick circuit with
three inputs for keyboard, DCO e VCF modulation. Obviously it is necessary
to know the range of CV modulation provening from the joystick which can be
easily measured.
	What do you think about? I'm wrong and eventually doing some
seriously damage to my Poly800?
	Obviously, to do this, the schematic and eventually the service
manual of Korg Poly800 is necessary. Can anyone help me about?

	All my best,

	Antonio