Yamaha 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/octave switches 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