Hello all. I've got a Yamaha PF-15 that seems to be out of tune. I don't know how that's even possible. I've adjusted the key transposer, the pitch control and gone over the passive components for shorts and losses, still no luck with finding out how it's losing its tune. C is playing more like D but nothing is wired improperly. I checked the connections on the serial cables and again, nothing amiss. Is it possible that one of the ICs has gone awry? There is also a synthed sound at the tail end of every note played. It's very strange and very quiet, but it's there. Any ideas on that, too? Finally, if anyone out there has a schematic for this beast, I'd love to see it, thanks. Matt
your gonna hate this but sometimes on the circuit board there is a screw somewhere that controls it, its gonna be hard to find, and get exactly back to where it needs to be......sorry for the bad news.
here is where you can download the manual, if you dont have it it may have the schematics.....its not much of a help but better than nothing sorry
