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CZ1 keyboard issue

CZ1 keyboard issue

2016-07-04 by roberflas@...

Hello,
I have a CZ1 , that was my first synthesizer , but one day I turn it on and if you touch any key , it sounds a very high note and hold on , if you play more keys it adds up but with high notes.
Some keys sound with erratic tune and the other keys sound with high tune and stay hold on after the key is depressed until power off the synth.
 If you play throught MIDI , all is correct, all notes , program change , etc.
Anyone have any idea what can happen ?.
Thank you in advance


Re: [CZsynth] CZ1 keyboard issue

2016-07-04 by howard tate

Sounds to me like the backup battery died and you need to reset the unit.
I don't know how to do that on a CZ1 but it will be in the manual.
The manual is available online if you don't have one.
--------------------------------------------
On Mon, 7/4/16, roberflas@... [CZsynth] <CZsynth@yahoogroups.com> wrote:
Show quoted textHide quoted text
 Subject: [CZsynth] CZ1 keyboard issue
 To: CZsynth@yahoogroups.com
 Date: Monday, July 4, 2016, 2:15 PM










     



















 Hello,
 I have a CZ1 , that was my first synthesizer , but one day I
 turn it on and if you touch any key , it sounds a very high
 note and hold on , if you play more keys it adds up but with
 high notes.
 Some keys sound with erratic tune and the other keys sound
 with high tune and stay hold on after the key is depressed
 until power off the synth.
  If you play throught MIDI , all is correct, all notes
 , program change , etc.
 Anyone have any idea what can happen ?.
 Thank you in advance

Re: [CZsynth] CZ1 keyboard issue

2016-07-04 by Daniel Forró

I have sent this answer to Vintage Synth group, still probably it  
didn't come, so once more here:

-------------------

Your description is not quite exact... I think it's you who should  
have an idea what happened :-) There's always some reason for such  
behavior.

One of them, for example, can be that if it was not in use for longer  
time period, maybe contacts are dirty or oxidized. I would reseat and  
clean all connectors as a first simple step. Focus on keyboard cables  
and connectors, I suppose there are some.

Sometimes after the long sleep it's good to leave the machine on for  
longer time - three days and nights, but keep eye on it and switch off  
again when you can't stay near it.

Daniel Forro
Show quoted textHide quoted text
On Jul 5, 2016, at 4:15 AM, roberflas@... [CZsynth] wrote:
>
> Hello,
> I have a CZ1 , that was my first synthesizer , but one day I turn it  
> on and if you touch any key , it sounds a very high note and hold  
> on , if you play more keys it adds up but with high notes.
> Some keys sound with erratic tune and the other keys sound with high  
> tune and stay hold on after the key is depressed until power off the  
> synth.
>  If you play throught MIDI , all is correct, all notes , program  
> change , etc.
> Anyone have any idea what can happen ?.
> Thank you in advance

Re: [CZsynth] CZ1 keyboard issue

2016-07-04 by charles.copp charles.copp

sustain pedal port?

maybe ribbon connector inside air polluted and is slightly separated ,

ive had my cz apart and its a work of guiness inside !


good luck

Show quoted textHide quoted text
---------- Original Message ----------
From: "Daniel Forr� danforcz@... [CZsynth]"
Date: July 4, 2016 at 6:35 PM

I have sent this answer to Vintage Synth group, still probably it didn't come, so once more here:

-------------------

Your description is not quite exact... I think it's you who should have an idea what happened :-) There's always some reason for such behavior.

One of them, for example, can be that if it was not in use for longer time period, maybe contacts are dirty or oxidized. I would reseat and clean all connectors as a first simple step. Focus on keyboard cables and connectors, I suppose there are some.

Sometimes after the long sleep it's good to leave the machine on for longer time - three days and nights, but keep eye on it and switch off again when you can't stay near it.�

Daniel Forro �



On Jul 5, 2016, at 4:15 AM, roberflas@... [CZsynth] wrote: 

Hello,
I have a CZ1 , that was my first synthesizer , but one day I turn it on and if you touch any key , it sounds a very high note and hold on , if you play more keys it adds up but with high notes.
Some keys sound with erratic tune and the other keys sound with high tune and stay hold on after the key is depressed until power off the synth.
�If you play throught MIDI , all is correct, all notes , program change , etc.
Anyone have any idea what can happen ?.
Thank you in advance


�

Re: [CZsynth] CZ1 keyboard issue

2016-07-04 by SciFiArtMan

I would add to the help Daniel has provided, to make sure you are using the absolutely correct power supply (volts, amps and polarity), as all CZs tend to be quite persnickety about proper power. Also make sure you have reset the synth.  I'm not sure about CZ-1s, but I know the 101s and 1000s have the reset button on the bottom of the case.
Good luck!
Show quoted textHide quoted text
      From: "Daniel Forró danforcz@... [CZsynth]" <CZsynth@yahoogroups.com>
 To: CZsynth@yahoogroups.com
 Sent: Monday, July 4, 2016 5:35 PM
 Subject: Re: [CZsynth] CZ1 keyboard issue

    I have sent this answer to Vintage Synth group, still probably it didn't come, so once more here:
-------------------
Your description is not quite exact... I think it's you who should have an idea what happened :-) There's always some reason for such behavior.
One of them, for example, can be that if it was not in use for longer time period, maybe contacts are dirty or oxidized. I would reseat and clean all connectors as a first simple step. Focus on keyboard cables and connectors, I suppose there are some.
Sometimes after the long sleep it's good to leave the machine on for longer time - three days and nights, but keep eye on it and switch off again when you can't stay near it. 
Daniel Forro  




On Jul 5, 2016, at 4:15 AM, roberflas@... [CZsynth] wrote:


Hello,
I have a CZ1 , that was my first synthesizer , but one day I turn it on and if you touch any key , it sounds a very high note and hold on , if you play more keys it adds up but with high notes.
Some keys sound with erratic tune and the other keys sound with high tune and stay hold on after the key is depressed until power off the synth.
 If you play throught MIDI , all is correct, all notes , program change , etc.
Anyone have any idea what can happen ?.
Thank you in advance

Re: [CZsynth] CZ1 keyboard issue

2016-07-05 by Lee Borrell

--------------------------------------------
On Mon, 4/7/16, Daniel Forró danforcz@... [CZsynth] <CZsynth@yahoogroups.com> wrote:
Show quoted textHide quoted text
 Subject: Re: [CZsynth] CZ1 keyboard issue
 To: CZsynth@yahoogroups.com
 Date: Monday, 4 July, 2016, 23:35
 
 
  
 I don't know about CZ1,but my CZ1000 loses the stored settings,and I have to push the 'P' reset button underneath because the backup is not working. I have never tried MIDI access during this condition.
If MIDI is working normally then it probably is not this. If it has been left for a long time,it maybe as well to check any internal backup backup system and perform a master reset? 

L
 
 
     
       
       
       I have sent this answer to Vintage Synth
 group, still probably it didn't come, so once more
 here:
 -------------------
 Your description is not quite
 exact... I think it's you who should have an idea what
 happened :-) There's always some reason for such
 behavior.
 One of them,
 for example, can be that if it was not in use for longer
 time period, maybe contacts are dirty or oxidized. I would
 reseat and clean all connectors as a first simple step.
 Focus on keyboard cables and connectors, I suppose there are
 some.
 Sometimes after
 the long sleep it's good to leave the machine on for
 longer time - three days and nights, but keep eye on it and
 switch off again when you can't stay near
 it. 
 Daniel Forro
  
 
 
 On Jul 5,
 2016, at 4:15 AM, roberflas@...
 [CZsynth] wrote:
 Hello,
 I have a CZ1 , that was my first synthesizer , but one day I
 turn it on and if you touch any key , it sounds a very high
 note and hold on , if you play more keys it adds up but with
 high notes.
 Some keys sound with erratic
 tune and the other keys sound with high tune and stay hold
 on after the key is depressed until power off the synth.
  If you play throught MIDI , all is correct,
 all notes , program change , etc.
 Anyone have any idea what can happen ?.
 Thank you in advance
 
 
     
      
 
     
     
 
 
 
 #yiv2754629414 #yiv2754629414 --

Re: CZ1 keyboard issue

2016-07-05 by roberflas@...

Hi, thanks to all, for your reply,
Ok, the battery is for replace in this moment, but i do a reset at power on time, to obtain the factory settings.
On the other hand, I do all checks for contacts of the keys and continuity for traces in printed board.
Anyone tell me that this issue may be caused for one or some diodes of the key matrix.
I will do a test of all diodes, there is 122, two for each key.
regrads

Re: [CZsynth] Re: CZ1 keyboard issue

2016-07-05 by <tomlinson6050@...>

There are 'flat flex' cables going from the keyboard scanning board (right under the key board ) to the main board. Be sure to check those. Careful, they are very fragile. Also, maybe check the little many pin flat pack IC for contamination shorting some of the pins.


Bill


-------------------------








---- "roberflas@... [CZsynth]" <CZsynth@yahoogroups.com> wrote: 


=============
Hi, thanks to all, for your reply, 
Ok, the battery is for replace in this moment, but i do a reset at power on time, to obtain the factory settings.
On the other hand, I do all checks for contacts of the keys and continuity for traces in printed board.
Anyone tell me that this issue may be caused for one or some diodes of the key matrix.
I will do a test of all diodes, there is 122, two for each key.
regrads

Re: CZ1 keyboard issue

2016-07-08 by geektech207@...

Google "casio key 74LS154 decoder chip repair" and take the first link.

It's for the CZ-101 but the principles are the same.

Re: CZ1 keyboard issue

2016-07-08 by smw-mail@...

I am not sure if you resolved this yet, but the high pitched noises almost sounds like the things I used to get when I put non-standard parameters into a patch definition (via sysex).

However, I believe if that were the problem (bogus patch data), you would have the unwanted noises regardless of whether you played the patch from the keyboard or via midi.

I don't know if this will help, but maybe it will help with diagnosing the problem.

Keep us posted.

Steve


Re: [CZsynth] CZ1 keyboard issue

2016-07-15 by roberflas@...

Hi all, i just change the battery with a new one and The keyboard are wrong, one notes sound ok but the scale is wrong and another keys sound too hight in tone and sustained until poder off, in the middle of keyboard all notes are sustained and too hight the key velocity touch is ok for all keys.
Any idea about what happen.
Thank you

Re: [CZsynth] CZ1 keyboard issue

2016-07-15 by SciFiArtMan

You should always reset the keyboard after a battery change.
Show quoted textHide quoted text
      From: "roberflas@... [CZsynth]" <CZsynth@yahoogroups.com>
 To: CZsynth@yahoogroups.com
 Sent: Friday, July 15, 2016 4:07 PM
 Subject: Re: [CZsynth] CZ1 keyboard issue

    Hi all, i just change the battery with a new one and The keyboard are wrong, one notes sound ok but the scale is wrong and another keys sound too hight in tone and sustained until poder off, in the middle of keyboard all notes are sustained and too hight the key velocity touch is ok for all keys.
Any idea about what happen.
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Re: [CZsynth] CZ1 keyboard issue

2016-07-15 by Daniel Forró

Have you followed all advice written about this in last days?

Daniel Forro
Show quoted textHide quoted text
On Jul 16, 2016, at 6:07 AM, roberflas@... [CZsynth] wrote:

> Hi all, i just change the battery with a new one and The keyboard  
> are wrong, one notes sound ok but the scale is wrong and another  
> keys sound too hight in tone and sustained until poder off, in the  
> middle of keyboard all notes are sustained and too hight the key  
> velocity touch is ok for all keys.
> Any idea about what happen.
> Thank you
>
> ------------------------------------
> Posted by: roberflas@...
> ------------------------------------

Re: [CZsynth] CZ1 keyboard issue

2016-07-15 by Caleb Garner

I know this might not be relevant but here is one weird thing I had with 
my CZ-1000 when i bought it..


when I would do a pitch bend.. when it the very highest and lowest 
values..  it would spike up super high or super low.. i just assumed it 
was some quirky problem with the bender wheel..


but then i went into the paramters of the synth and noticed something.. 
the parameter was actually set to 99 somehow.. not +12.. or something 
like that.. so when i set the value to a correct value.. the pitch wheel 
worked great..


I don't know how it got to that setting in the first place.. but it was 
there..  the kind of weirdness you're talking about almost sounds like 
parameters that somehow got skewed.. so many somehow doing a sysex dump 
from existing good patches..  or even just going into the various 
parameters and just adjusting them could restore normal behavior.




Good luck,
Caleb






Daniel Forr� danforcz@... [CZsynth] wrote:
Show quoted textHide quoted text
>
> Have you followed all advice written about this in last days?
>
> Daniel Forro
>
> On Jul 16, 2016, at 6:07 AM, roberflas@... [CZsynth] wrote:
>
> > Hi all, i just change the battery with a new one and The keyboard
> > are wrong, one notes sound ok but the scale is wrong and another
> > keys sound too hight in tone and sustained until poder off, in the
> > middle of keyboard all notes are sustained and too hight the key
> > velocity touch is ok for all keys.
> > Any idea about what happen.
> > Thank you
> >
> > ------------------------------------
> > Posted by: roberflas@...
> > ------------------------------------
>
>

Re: [CZsynth] CZ1 keyboard issue

2016-07-16 by bill bigrig

I'm going to go out on a limb here, I've had Sequential Circuits, Yamaha Cx5 muzik computer and yes, CZ act weird on me after long rests in a closet etc. They act REALLY weird on power up. I turn them off for a day, then back on. Repeating this brings them back a little bit at a time. The only thing I can think of is the Cmos electronics of this era wakes up slowly. It has happened to me MANY times. You may want to try it.
Rig
--------------------------------------------
On Fri, 7/15/16, Daniel Forró danforcz@yahoo.com [CZsynth] <CZsynth@yahoogroups.com> wrote:
Show quoted textHide quoted text
 Subject: Re: [CZsynth] CZ1 keyboard issue
 To: CZsynth@yahoogroups.com
 Date: Friday, July 15, 2016, 4:45 PM
 
 
  
 
 
 
   
 
 
     
       
       
       Have you followed all advice written about this in
 last days?
 
 
 
 Daniel Forro
 
 
 
 On Jul 16, 2016, at 6:07 AM, roberflas@... [CZsynth]
 wrote:
 
 
 
 > Hi all, i just change the battery with a new one and
 The keyboard  
 
 > are wrong, one notes sound ok but the scale is wrong
 and another  
 
 > keys sound too hight in tone and sustained until poder
 off, in the  
 
 > middle of keyboard all notes are sustained and too
 hight the key  
 
 > velocity touch is ok for all keys.
 
 > Any idea about what happen.
 
 > Thank you
 
 >
 
 > ------------------------------------
 
 > Posted by: roberflas@...
 
 > ------------------------------------
 
 
 
 
 
     
      
 
     
     
 
 
 
 #yiv0849725305 #yiv0849725305 --

Re: [CZsynth] CZ1 keyboard issue

2016-07-16 by Daniel Forró

I don't think this can be caused by CMOS chips.

Bigger problems with long time sleeping instruments can be caused by  
old capacitors, mainly electrolytic ones.

Repeating switching on/off can't help so much, important on it is the  
phase when machine is on. Because it was enough time off :-)

So what can help is to leave the machine on for longer time, but to  
watch it (danger of the fire!).

And the best is to check all caps and maybe change electrolytic caps  
looking suspiciously in PSU (or elsewhere in the circuits).

When PSU delivers stable voltages properly on spec, it's time to check  
all the other things - first all connectors and chips in sockets, as  
this is where oxidation can cause bad contact. Clean, de-oxit, reseat  
more times...

If this all doesn't help to revive the machine, it's necessary to do  
other checking and  diagnostics, and maybe replace more components.

Problems can be also solved by changing RAM backup battery (and  
leaving the machine without battery for 24 hours), by factory reset,  
by loading good set of sounds, and of course by using the machine (for  
example problematic microswitches can return  to normal operation when  
used for some time - something like self-cleaning).

Just my experience from reviving of many old machines. It's not rocket  
science.

Daniel Forro


On Jul 16, 2016, at 9:18 AM, bill bigrig billbigrig@...  
[CZsynth] wrote:
Show quoted textHide quoted text
> I'm going to go out on a limb here, I've had Sequential Circuits,  
> Yamaha Cx5 muzik computer and yes, CZ act weird on me after long  
> rests in a closet etc. They act REALLY weird on power up. I turn  
> them off for a day, then back on. Repeating this brings them back a  
> little bit at a time. The only thing I can think of is the Cmos  
> electronics of this era wakes up slowly. It has happened to me MANY  
> times. You may want to try it.

Re: [CZsynth] CZ1 keyboard issue

2016-07-16 by bill bigrig

OK, so not Cmos. All, I know, and this has happened a LOT, is by turning on for a couple hours each day, they all have come back to life. I was all set to send a synth back to Wine Country for repair, but it woke up just before I boxed it.
Rig
--------------------------------------------
On Fri, 7/15/16, Daniel Forró danforcz@... [CZsynth] <CZsynth@yahoogroups.com> wrote:
Show quoted textHide quoted text
 Subject: Re: [CZsynth] CZ1 keyboard issue
 To: CZsynth@yahoogroups.com
 Date: Friday, July 15, 2016, 5:34 PM
 
 
  
 
 
 
   
 
 
     
       
       
       I don't think this can be caused by CMOS
 chips.
 
 
 
 Bigger problems with long time sleeping instruments can be
 caused by  
 
 old capacitors, mainly electrolytic ones.
 
 
 
 Repeating switching on/off can't help so much, important
 on it is the  
 
 phase when machine is on. Because it was enough time off
 :-)
 
 
 
 So what can help is to leave the machine on for longer time,
 but to  
 
 watch it (danger of the fire!).
 
 
 
 And the best is to check all caps and maybe change
 electrolytic caps  
 
 looking suspiciously in PSU (or elsewhere in the
 circuits).
 
 
 
 When PSU delivers stable voltages properly on spec, it's
 time to check  
 
 all the other things - first all connectors and chips in
 sockets, as  
 
 this is where oxidation can cause bad contact. Clean,
 de-oxit, reseat  
 
 more times...
 
 
 
 If this all doesn't help to revive the machine, it's
 necessary to do  
 
 other checking and  diagnostics, and maybe replace more
 components.
 
 
 
 Problems can be also solved by changing RAM backup battery
 (and  
 
 leaving the machine without battery for 24 hours), by
 factory reset,  
 
 by loading good set of sounds, and of course by using the
 machine (for  
 
 example problematic microswitches can return  to normal
 operation when  
 
 used for some time - something like self-cleaning).
 
 
 
 Just my experience from reviving of many old machines.
 It's not rocket  
 
 science.
 
 
 
 Daniel Forro
 
 
 
 On Jul 16, 2016, at 9:18 AM, bill bigrig
 billbigrig@...  
 
 [CZsynth] wrote:
 
 
 
 > I'm going to go out on a limb here, I've had
 Sequential Circuits,  
 
 > Yamaha Cx5 muzik computer and yes, CZ act weird on me
 after long  
 
 > rests in a closet etc. They act REALLY weird on power
 up. I turn  
 
 > them off for a day, then back on. Repeating this brings
 them back a  
 
 > little bit at a time. The only thing I can think of is
 the Cmos  
 
 > electronics of this era wakes up slowly. It has
 happened to me MANY  
 
 > times. You may want to try it.
 
 
 
 
 
     
      
 
     
     
 
 
 
 #yiv5787141714 #yiv5787141714 --

Re: [CZsynth] CZ1 keyboard issue

2016-07-16 by Daniel Forró

You did well this way. That really helps. It's like the instrument  
needs to get used again on electricity in its circuits :-)
Especially capacitors can be "formed" by electricity.

Daniel Forro


On Jul 16, 2016, at 9:36 AM, bill bigrig billbigrig@...  
[CZsynth] wrote:
Show quoted textHide quoted text
> OK, so not Cmos. All, I know, and this has happened a LOT, is by  
> turning on for a couple hours each day, they all have come back to  
> life. I was all set to send a synth back to Wine Country for repair,  
> but it woke up just before I boxed it.
> Rig

Re: [CZsynth] CZ1 keyboard issue

2016-07-16 by Gordonjcp

On Sat, Jul 16, 2016 at 09:34:05AM +0900, Daniel Forr\ufffd danforcz@... [CZsynth] wrote:
> I don't think this can be caused by CMOS chips.
> 
> Bigger problems with long time sleeping instruments can be caused by  
> old capacitors, mainly electrolytic ones.
> 

That's really only in old valve equipment, a combination of 1950s manufacturing technology and very high voltages used.

> Repeating switching on/off can't help so much, important on it is the  
> phase when machine is on. Because it was enough time off :-)

Yup

> So what can help is to leave the machine on for longer time, but to  
> watch it (danger of the fire!).

Definitely keep an eye on it.

> And the best is to check all caps and maybe change electrolytic caps  
> looking suspiciously in PSU (or elsewhere in the circuits).

Worth looking at, but don't just replace parts for the fun of it.  If you suspect a capacitor is genuinely faulty, change it.  I've done maybe a dozen faulty electrolytics in things that weren't cheap shitty switched-mode power supplies in nearly 30 years.

> When PSU delivers stable voltages properly on spec, it's time to check  
> all the other things - first all connectors and chips in sockets, as  
> this is where oxidation can cause bad contact. Clean, de-oxit, reseat  
> more times...

Correct wall-wart is a biggie.  Get one with about 9V, the correct polarity, and about 1A output.
I think the CZ "stock" one is rated for about 750mA or so, but more current is better (within reason - you don't want to be dragging a welding genset to gigs).

> If this all doesn't help to revive the machine, it's necessary to do  
> other checking and  diagnostics, and maybe replace more components.
> 
> Problems can be also solved by changing RAM backup battery (and  
> leaving the machine without battery for 24 hours), by factory reset,  
> by loading good set of sounds, and of course by using the machine (for  
> example problematic microswitches can return  to normal operation when  
> used for some time - something like self-cleaning).
> 
> Just my experience from reviving of many old machines. It's not rocket  
> science.
> 
> Daniel Forro

A lot of synths have some sort of factory reset button that will clear any RAM patches, and (more importantly) nuke anything that's in RAM that might be corrupt and affecting the operation of the instrument.  More complex instruments (particularly digitally-controlled analogue synths like the Ensoniq ESQ-1/SQ-80 hold calibration data in RAM for the filters) keep stuff around in RAM and behave very strangely if it's corrupt but not corrupt enough to force it to reinitialise everything.

IIRC the CZ1000 has a reset button on the bottom you're meant to poke after changing batteries.

-- 
Gordonjcp MM0YEQ

Re: [CZsynth] CZ1 keyboard issue

2016-07-20 by Lee Borrell

I do not know if this applies to the 1 but the 1000 does the same thing as described when switched off without any backup.
The parameters can end up outside the nominal ranges,resulting in gash characters in the LCD display and the PB going into orbit.
What I have found is that,altering the PB range in the LCD display returns it to a nominal setting and gets rid of the gash characters.
Also - the RESET 'P' button underneath the machine should be pushed in with a pencil or other object to reset the machine - it will have the same effect upon the PB and display.
I do not know if the CZ1 has such a button - but I suppose it does if the 1000 and 101 do.

Lee

      From: "Caleb Garner caleb.garner@... [CZsynth]" <CZsynth@yahoogroups.com>
 To: CZsynth@yahoogroups.com 
 Sent: Saturday, 16 July 2016, 0:49
 Subject: Re: [CZsynth] CZ1 keyboard issue
   
    I know this might not be relevant but here is one weird thing I had with my CZ-1000 when i bought it..

when I would do a pitch bend.. when it the very highest and lowest values..  it would spike up super high or super low.. i just assumed it was some quirky problem with the bender wheel..

but then i went into the paramters of the synth and noticed something.. the parameter was actually set to 99 somehow.. not +12.. or something like that.. so when i set the value to a correct value.. the pitch wheel worked great..

I don't know how it got to that setting in the first place.. but it was there..  the kind of weirdness you're talking about almost sounds like parameters that somehow got skewed.. so many somehow doing a sysex dump from existing good patches..  or even just going into the various parameters and just adjusting them could restore normal behavior.


Good luck,
Caleb



Daniel Forró danforcz@... [CZsynth] wrote:
   Have you followed all advice written about this in last days?

Daniel Forro
Show quoted textHide quoted text
On Jul 16, 2016, at 6:07 AM, roberflas@... [CZsynth] wrote:

> Hi all, i just change the battery with a new one and The keyboard 
> are wrong, one notes sound ok but the scale is wrong and another 
> keys sound too hight in tone and sustained until poder off, in the 
> middle of keyboard all notes are sustained and too hight the key 
> velocity touch is ok for all keys.
> Any idea about what happen.
> Thank you
>
> ------------------------------------
> Posted by: roberflas@...
> ------------------------------------

Re: [CZsynth] CZ1 keyboard issue

2016-07-21 by roberflas@...

Hi, it is possible, I think same, because I discovered that in key split mode, the lower keys really correspond to the sound of hight keys, it is like all keys are in too high octaves, like it is a wrong programing .

I go to investigate that metod you sugested, send sysex messages.

Thank you

Re: CZ1 keyboard issue

2016-07-21 by smw-mail@...

>> I do not know if this applies to the 1 but the 1000 does the same thing as described when switched off without any backup.The parameters can end up outside the nominal ranges,resulting in gash characters in the LCD display and the PB going into orbit.

This sounds very much like the what happens by sending bogus parameter data (i.e., outside the range you can enter from the panel).

It might be helpful to try to rule this out (corrupted patch parameter data), by sending sysex patches directly to the sound area instead of one of the memory slots.

Also, in re-reading some of the posts, it is unclear if the "high notes" are legitimate notes within the normal range of the CZ (e.g., not above the highest note possible at the highest octave setting) or if the "high notes" are outside the normal CZ range.

Hope this helps get to the issue.

Steve

Re: CZ1 keyboard issue

2016-07-22 by narfman96@...

Hi,
I had a similar thing happen.
Definitely initialize back to factory settings. Just hold down the red initialize button (top right hand corner) while you turn it on. It will then ask on the LCD - hit "yes".

Also check out my free patches for this synth CZ1Vel01. They are stored here in the files area of this group.

Narfman96


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