[sdiy] Yamaha CS-15D schematic

[Bob Weigel]

That machine is truly one of my great all time ebay deals.  Folks picked 
it up in cali for me for 200 with an a perfect anvil flight case in 
perfect condition save the keys seem to need a little lube.  They just 
seem a little sluggish compared to my CS20M with the same movement.  
Anyway I have the diagram from Yamaha's site but as a service guy of 
course I'm not supposed to share them.  As you see on my website the 
CS-15 and a lot of others are on the fdisk site.  I'm not sure how 
they/if they got permission or if Yamaha resents this at all.  Anybody 
up on Yamaha's attitude on this stuff? -Bob

Richard Atkinson wrote:

> Has anyone seen the schematic diagram for this rather unusual preset /
> variable monosynth? In one sense it's a more capable synthesizer than any
> of the CS-5, 10, 15 bunch, even the CS-30, since it has two VCOs, two 
> VCFs,
> 2 VCAs and 4 envelope generators. However, half of that is stuck behind
> preset sounds only, and the modulation capabilities are inferior to 
> all the
> previous synthesizers.
>
> A prime candidate for modification and modularising, you might say!
>
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