Casio CZ/ VZ/ FZ - Pro Series

Be carefull not to draw too much current for the backlight. I use a 2k up to a 20k resistor to limit the current to the backlight depending on led brightness. 

Peter, The clear & legible schematics are awesome! Thanks! Everyone keeps asking about the rest of the service docs so they can setup the test points. That's why we're looking for the complete doc.

--- In CZsynth@yahoogroups.com, "jammie" <jammie.emma@...> wrote:
>
> try the scanner cpu of the keyboard
>   ----- Original Message ----- 
>   From: steph_g_87 
>   To: CZsynth@yahoogroups.com 
>   Sent: Thursday, April 15, 2010 12:02 AM
>   Subject: [CZsynth] Re: CZ 101 lcd display
> 
> 
>     
>   and.... it works !!!!
> 
>   I've just put a 6x12 with back light (i've picked a 5v from the on/off switch)
>   very nice and briiiiight ! http://stgarrigue.free.fr/divers/guitareSG/claviers/casio1.JPG
> 
>   The CZ works fine but there is still an issue with the keyboard..
>   All the F and B keys don't work ! And that doesn't come from the keyboard itself
> 
>   > > > --- In CZsynth@yahoogroups.com, "steph_g_87" <stephane.garrigue@> wrote:
>   > > > >
>   > > > > Hi everibody !
>   > > > > I'm new there and sorry for my english, i,m french, I'll try to do my best ;)
>   > > > > 
>   > > > > I just boutgh a CZ 101 yesterday... cheap.. but with a bunch of issues
>   > > > > first, some switch and keys were dead.. I have cleaned every keys/contacts/ and
>   > > > > because of a batterie leak I even have to rebuilt some of the contact paterns with conductive ink (they were totaly erased from the board !!)
>   > > > > 
>   > > > > The CZ works fine, sounds are clean, no distortion or weird noises.
>   > > > > I have built a compartment to hold à 9v battery (just to keep the memory,
>   > > > > I rather use an 9v power supply)
>   > > > > 
>   > > > > The main issue (I should say that's a blind issue ;) ) is that the display
>   > > > > doesn't work ! The LCD board is well soldered but there's nothing on the screen
>   > > > > not even random pixels or whatever...
>   > > > > 
>   > > > > 
>   > > > > I would like to now if a hd4470 16x2 standard display like this would fit :
>   > > > > http://www.oomlout.co.uk/lcd-display-16-x-2-p-212.html?zenid=1113c67399971628ef01f1c4671564f7
>   > > > > 
>   > > > > 
>   > > > > Thx
>   > > > > 
>   > > > > Stephane
>   > > > >
>   > > >
>   > >
>   >
> 
> 
> 
>   
> 
> 
> ------------------------------------------------------------------------------
> 
> 
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