I recently bought a Casio Cz5000 - great fun .Digital but analog sounding
in fact more analog sounding then most analog modeling synths that are out now.
Anyway one problem-it seems to be out of tune.There is a key transpose feature and also a mastertune button.Key Transpose works fine but mastertune is confusing.
When you press Mastertune it tells to push Value Key.There are to 'value keys' in the envelope section under the lcd display but pushing these does not have any effect.
There is nothing in the manual i got with it about this.Anyone know what painfully obvious thing i have missed?

(picture shows a CZ101, but CZ5000 should be simular)
