Casio CZ/ VZ/ FZ - Pro Series

Fortunately there's only 3 in this unit.
Vr3 is the aftertouch adjustment. Not quite sure what Vr2 is for, but Vr1 was the reason there was no display and it seems affects the voltage supplied to the cc controllers.
None of them seem to affect the minimum value of the cc controls.
I did find however that the adc voltage reference alters from 5v to 3.78 v when the power switch is on.
Apparently all the power is not switched off when the power switch is in the off position.
I am thence uncertain as to whether this might be behind the inability to set the cc controls to minimum values.
I have however found a workaround in passing the data through midi-ox and remapping the values.
A tad awkward since the az cannot be used stand-alone, which is a bit of a drawback for a keytar!

Sent from my iPhone

On 18 Apr 2016, at 09:55, "Gordonjcp gordon@... [CZsynth]" <CZsynth@yahoogroups.com> wrote:

> On Sat, Apr 16, 2016 at 12:06:36AM +0100, Lee templarser@... [CZsynth] wrote:
> > The midi channel set is dysfunctional because the offset of the pitch bender is incorrect.
> > Looks like someone had a good old mess with the variable resistors. 
> > The button becomes active as per the manual when the pbend is set to a value mimicking centre.
> > 
> > So it seems all but the midi output problem have been caused by mal-adjusted presets.
> 
> Back in the day, I had an evening job after school in a TV repair shop, and back then TVs and video recorders had a ridiculous amount of presets that controlled nearly every aspect of their operation.
> 
> You'd be amazed - or maybe you wouldn't - how many people would bring their ailing VCR in and say "Oh the picture went all fuzzy so I opened it up and a lot of the little screw things were loose so I tightened them up but it hasn't helped - it's not going to be *very* expensive is it?"
> 
> Well now, I hate to have to break it to you like this, but...
> 
> -- 
> Gordonjcp MM0YEQ
>