Hi all.
Happy Holidays to all!
I just uploaded some more pics/docs to the folder http://groups.yahoo.com/neo/groups/yamahacs80/photos/albums/519437225
These are my corrected versions of the CS80 service manual with the correct parts and values. I couldn't upload the ODG version of the PCB because of Yahoo's 10MB file limit. I'll put it up on my site eventually but at least posted the JPG for now.
Now I'm soldering in hundreds of replacement 25-turn trimmers on all 16 voice cards. It's going to take a bit of time!
David