Yamaha CS80

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




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