As promised, I have uploaded a copy of the CS servicing guide to the files section on this site. This thing is pretty rare, apparently... but I still think it's weird that there has been little to no mention of it online, especially given the popularity of these synths... am I really the only person who has a copy???? Anyways, I hope this will now help enable others (like me) to start to understand how their CS machine/s operate.
I paid a pretty penny for this, but I hope this is only shared and not sold by whoever downloads it.
A higher rez copy is available here, at least for a little while:
http://www-personal.umich.edu/~damont/YamahaCSSeriesSynthesizerServicingGuidePOSTED.pdfPlease see my last post for the CS series troubleshooting document.
Enjoy...
Damon