Vintage Synth Repair

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 
<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: 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
>   >
> 
>   __________________________________________________________
>   Essayez Windows Live Messenger: le futur de MSN Messenger!
>   http://imagine-msn.com/messenger/launch80/default.aspx?locale=fr-
ca
> 
> 
> 
>   
>   ------------------------------------------------------------------
--------
> -------------------------
>   Panda Antivirus + Firewall 2007 ha detectado que este mensaje 
puede estar
> falseado.
> 
>   Te recomendamos la máxima precaución ya que los mensajes 
falseados pueden
> indicar la existencia de un intento de estafa.
>   ------------------------------------------------------------------
--------
> -------------------------
>