Casio CZ/ VZ/ FZ - Pro Series

I have two CZ 5000 that begins to reset ( I hear a sound click near MODE
SECTION and the LCD and the lighs blinks and the synth resets to A1 preset
... sometimes its occurs repeteadly) ... and some days after the sounds
begins crazy :(

the two begins to have this problem after 1 month of using every day ( I
bought the first past year and the second two months ago ) :(


I bought the CZ 5000 service manual and i will try to find someone here im
Bazil who may fix them :)



Patrick Wichrowski


2006/8/10, mr_shtootzky <sztucki@...>:
>
>    Hello everybody,
> My CZ5000 behaves in a strange way when I connect to its MIDI OUT an
> interface which I bougt recently: SWISSONIC MIDI-USB 1×1 (you can see
> one here http://www.thomann.de/thoiw2_artikel-185425.html ).
>
> And now let me explain what the problem is about.
> The MIDI transmission itself seems to work fine both ways. I even
> managed to load patches from PC to CZ with CZ Sysex Editor, although I
> am quite a newbie. The synth sends all messages to the PC and works OK
> as a controller too.
>
> However not everything is OK. When moving pitch bender and modulation
> wheels you can hear (throug headphones and line out) some strange noise
> artifacts which correspond to what I assume is the mididi data stream
> being sent to MIDI OUT. Not very audible, but annoying and there
> shouldn't be any such noise at all. It is the same with the keyboard -
> only to hear it you have to switch it to "local OFF". Each key when
> depressed produces a slight "tick" in the audio, again hardly audible,
> but it shouldn't be there.
>
> It is strange, because all this happens only when the MIDI IN cable
> from this interface is connected to the MIDI OUT of the CZ, and what's
> more - it happens regardles of the interface itself beeing connected or
> disconnected from the USB port in the PC.
>
> The other strange sympthom is when I connect the MIDI IN plug of the
> interface to the MIDI OUT of the CZ when they are both live, sometimes
> the CZ gets something like an impuls which causes it to light several
> leds on the panel for a moment and blink the LCD, like it gets a kind
> of a RESET or something? But once the plug is in it sets fine and works
> OK. Strange, isn't it? It shouldn't happen though.
>
> I tested the interface with my other equipment: the KORG Poly 800 and
> Roland MC-303. Everything's fine. They both seem to work perfectly with
> the interface.
>
> I should stress that the above problems with CZ do not occur either
> when I connect it either to Poly or MC-303 with ordinary MIDI cable.
> They communicate perfectly. No noise artifacts, no resetting the CZ.
>
> So both my CZ5000 and SWISSONIC interface seem to work perfectly fine
> provided that they are not combined together.
>
> What do you think is the cause of my CZ's strange behaviour?
> Is it the interface (some tricky malfunction, bad design? It's a cheap
> model but looks and feels very solid and has even a THROUGH switch.)?
> Should I return it to the seller for a refund then? Or is it something
> wrong with MIDI OUT in the CZ itself (this "resetting" might point to
> that)?
>
> Anyway I need some clue and I would appreciate all good advice.
>
> Best regards
> Marcin
>
> 
>


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