Casio CZ/ VZ/ FZ - Pro Series

Have you tried to change the setting of contrast variable resistor VR2  
on the main board MA1M? Maybe it will help...

I have changed display in my CZ3000 for modern one with LED backlight,  
even I couldn't find service manual for this machine. I had only that  
one for CZ5000 and other CZ instruments, fortunately it looks like  
they use the same standard of controller (14 pin HD44780). So I think  
it would be possible to change also display in CZ1, if you find the  
same size.

Daniel Forro


On Feb 4, 2015, at 3:40 AM, daveogarf@... [CZsynth] wrote:
> Has anyone out there, who owns any of the CZ Cosmo series had any  
> difficulty with the contrast of the display, e.g. the brightness  
> being good, but the contrast being so faint that the display is all  
> but unreadable?  I've fiddled with the contrast control inside, but  
> just can't get anything on the display.
>
> On a side note, has anyone done an LED display conversion for any of  
> the CZ series?  I've seen one for the CZ-101, but I think the CZ-1's  
> display is larger.
>