Vintage Synth Repair

I'd be interrested too. I don't have a Kawai (well, I have one, but not this
one), but I'd like check the schematics for another purpose.

>From: "gil_we" <gil_we@yahoo.com>
>Reply-To: vintagesynthrepair@yahoogroups.com
>To: vintagesynthrepair@yahoogroups.com
>Subject: [vintagesynthrepair] Re: Problem with Kawai SX-240.
>Date: Thu, 22 Mar 2007 09:45:31 -0000
>
>Who did you contact ? I'm trying to get the schematics for the SX210
>as well.... Could you please email me the one for SX240 please ?
>
>Many thanks !
>
>
>--- In vintagesynthrepair@yahoogroups.com, Joan Martínez
>...> wrote:
> >
> >
> > Hallo Francois!
> >
> > Oui! I get it The official service in Spain has been very kind and
>I get the
> > schematics form there with no problem at all.
> >
> > Many thanks!
> > -----Mensaje original-----
> > De: vintagesynthrepair@yahoogroups.com
> > [mailto:vintagesynthrepair@yahoogroups.com]En nombre de francois
>basquin
> > Enviado el: miércoles, 21 de marzo de 2007 19:02
> > Para: vintagesynthrepair@yahoogroups.com
> > Asunto: RE: [vintagesynthrepair] Problem with Kawai SX-240..
> >
> >
> >
> >
> >
> > Joan, do you have the schematics of this part ?
> >
> > >From: "Joan" <;piniflopa@...>
> > >Reply-To: vintagesynthrepair@yahoogroups.com
> > >To: vintagesynthrepair@yahoogroups.com
> > >Subject: [vintagesynthrepair] Problem with Kawai SX-240.
> > >Date: Tue, 20 Mar 2007 18:41:49 -0000
> > >
> > >Hello,
> > >
> > >I bought some time ago this synth with a lot of problem that
>I've been
> > >fixing. But now I don't know how to solve the remaining problem.
> > >
> > >I found the problem in cutoff voltage control from D/A
>converter. It
> > >looks in some of the 8 stages the voltage is right (1st, 2nd,3th
>and
> > >5th) but in other is not possible to adjust the Voltage in the
>SSM
> > >filters. I also swap two chips just in case and afortunately the
> > >SSM2044 are ok. I change the circuit multiplexer and the IC's
>that
> > >provides de D/A conversion throght the R-Array. Some of the wrong
> > >stages are just impossible to adjust, other are noisy. My
>thinking is
> > >that the switching time is delayed between CPU and multiplexer
>but as
> > >I cannot chceck with osciloscope -I don't get one- I'm just
>sttoped in
> > >that situation.
> > >The system (apart from SSM chips) is quite similar to JUNO's.
>Does
> > >anayone get a similar problem? Or more important does anyone
>know thow
> > >fix it?
> > >
> > >Many thanks in advance.
> > >
> > >Joan M.
> > >www.soundclick.com/nolabelavailable
> > >
> >
> > __________________________________________________________
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