Casio CZ/ VZ/ FZ - Pro Series

This sounds awesome! Can you be a little more specific with where 
exactly the 9v and the four AA batteries go? Are they in series with 
eachother? Is the foam necessary?

Also, I was considering just clipping off the little input on the 
Casio AC adapter, then just soldering it to the power input, then 
actually installing the AC adapter INSIDE the CZ-1000 case. Then I 
could just use a standard computer / monitor power cable, which I've 
found to be much more reliable that those little half-inch cylinders 
at the ends of AC adapters.

... I hope that made sense.

--- In CZsynth@yahoogroups.com, "Terry" <daytona@...> wrote:
>
>  
> > It's not as straight-forward as it sounds.  
>  Hi Everybody,
>  Actually is it simple and straight forward. Simply connect a
> 9 volt battery strap to the + and - battey terminals. Connect 
> a square battery holder for 4 AA. Stuff the back of the CZ
> battery compartment with foam. Snap in the battery holder and
> your done. Should hold the memories for at least 9 months 
> without use. Mine did. The CZ 3000/5000 use 3 AA's for backup.
>  I tried with 3 volts or 2 AA's but this did not hold memory.
> It did work with 4.5 volts or 3 AA's, but there is no way to
> mount the 3 battery holders, so I went with four or 6 volts
> backup.
>  So why does this work? The casio already works with battey 
> backup in the form of 9 volts via 6 D cells. Built into this
> circuit is a low voltage memory protect that will shut down 
> the CZ when the voltage drops below a certain threshold.
> Usually set at around 7.5 volts or so via an internal trimmer.
> By placing only 6 volts here the CZ will not try to run off the 
> batteries. If you instead placed a 9 volt type battery on the
> clips, as per a mod article in Electronic Musician, the CZ
> will actually run off of this battery. The poor 9 volt will last
> about 5 minuts before the low voltage protect shuts it off, 
> leaving the battery dead and useless. So 6 volts no problem.
>  So why does the CZ cause such problems with batteries in the first
> place? Another mystery that plagues many CZ users is the power jack
> on the side of the CZ 101, 1000, 230S. The pin is not a standard
> one as many believe. The center pin is actually 1.7mm and not the
> standard 2.1mm found in many replacement power supplies. So the will
> work sporadicly, giving the impression that the jack is faulty. This
> condition is probably the leading cause of short battery life. The 
CZ
> user does not reralize the power has disconnected momenarly and 
> running off the internal battery backup. The ^ D cell normally only
> last around 4-5 hours tops. So using 6 volts as back up eliminates 
> this power problem, as now when the power is interupted the CZ will
> shut off, saving the backup not draning it.
>  And the proper fix for the power is to get the correct AD-5 supply
> for a Casio with the 1.7mm center pin. ( Don't get the barrel end 
> type that has a "L" shaped end as this will not seat property in 
the 
> 101. Get the one with a straight end.)
>  Also the CZ101/1000/230S does have a super capacitor to hold the 
> memory for battery changes. Depending on the condition of the cap
> this will hold for at least 5-7 minuts without any battery. Just
> look at the schematics.
>  I'll post a pic of the required items if I can. All you need is 
> a 9V battery clip, a 4 AA battery holder, and some foar rubber to 
> stuff the battery compartment. Simple!
> 
> Terry (The Casio Kid)
>