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@...>
>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 Mart\ufffdnez
><piniflopa@...> 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: mi\ufffdrcoles, 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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