Casio CZ/ VZ/ FZ - Pro Series

Hi
I'm searching too for the full service manual. Also I'm having the same problem here. i think that it has to do with the DAC offset voltage value. I measure it at about 2.5v DC. I also have checked a CZ-5000 service manual which states that the DAC offset voltage value must be around 300mV. The problem is that I can not figure out why I'm read this hi voltage value (2.5v). The VR2 trimmer  doesn't do anything. Please share any additional thoughts.
Regards
Bill

--- In CZsynth@yahoogroups.com, "udon.juan" <udon.juan@...> wrote:
>
> Hello Baptiste,
> 
> Did you ever come across anything? I have an old CZ-101 with similar problems, and I am looking to rehabilitate it.
> 
> Best, Udon
> 
> --- In CZsynth@yahoogroups.com, "Baptiste" <oscillate_wildly1@> wrote:
> >
> > Hi,
> > 
> > Does anyone have a CZ 101/ 1000 service manual which includes all the calibrations, and how to repair the CZ, not just the schematics?
> > 
> > Because I have a faulty CZ 101. The problem is when I push down more than one key, it starts to warble and sounds very distorted. I have been advised that it may be one of the op amps, but I would rather check the calibrations before replacing it.
> > 
> > Thanks!
> >
>