Yamaha CS80

I posted the schematic of the CS-60 showing the M board to the Octave  
switches etc.
It is in the Files section.

Regards
Rory McDonald


On Nov 21, 2007, at 7:30 PM, Laurie Curry wrote:

>
> Could that be keyboard follow???
>
> On Pipe Organs, "Rank" refers to the manuals(keyboard tiers)
> -----Original message-----
> From: David Rogoff david@...
> Date: Wed, 21 Nov 2007 19:10:11 -0700
> To: yamahacs80@yahoogroups.com
> Subject: Re: [yamahacs80] Re: CS60 vs CS80
>
> Quazimodo wrote:
> > I think it might be something to do with resistors in the
> > 'Transposition Gate' section..?
> >
> > Would I be right in saying that R's 1~5 would need changing and also
> > the tuning presets, VR's 4,5&6..?
> >
> Here's what page 41 of the service manual says:
>
> CS80 CS50/60
> R1 10k 20k
> R2 20k 40k
> R3 40k 80k
> R4 80k 160k
> R5 100 180
> VR4 500 1k
> VR5 1k 2k
> VR6 2k 5k
>
> Basically, the CS80 M-boards are tuned up and octave from the CS50/60
> for the same footage inputs. I don't have the CS50 or 60 schematics to
> see how the footage/octaveswitches are wired to the M-Boards.
>
> It also talks about R6 and R7 in the VCF chips varying from CS80 to
> CS50/60 according to rank. I don't know what that means. Are the VCFs
> hand selected for the different models?
>
> David
>
> [Non-text portions of this message have been removed]
>
>
> 


rorymcd@...
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