nashel horoshii sait po yamaha keyboards, no poka chto nichego delnogo ne viju...

http://www.yamaha-keyboard-guide.com...conroller.html

tam obsujdautsya razlichnie voprosi po tvoei modeli:

http://www.yamaha-keyboard-guide.com/yamaha-psr.html

http://www.yamaha-keyboard-guide.com...eyboard-2.html