I've done a bit of research and come up with this:
http://yamahadisklavier.googlepages.com/hgseriesmidispec
If your piano is what I think it is, try asking Yamaha in Italy if they still have an owners manual for the Disklavier Mark I Grand Piano (Wagon Grand / DKC10)
http://www.yamaha.it/sac/index.htm
athomik
On Sep 12 2007, Fabio Ferrucci wrote:
>Thank you anyway for your precise suggestions.
>Best regards
>Fabio Ferrucci
>