Be sure to add me to your favorites list Yamaha Service Notes Bulletin to Repair KX5 Keytar Ribbon Controller These are 4 pages of a Yamaha service notes bulletin, specifically for repairing the ribbon controller on the KX-5 keytar midi controller. More specifically, when the pitch bend effect is always on, when the neck panel is pressed and the pitch bend is activated, or if the MIDI pitch bend data is unstable. These sheets are a very good reproduction of the original sheets, printed out on standard paper and very lightly used. Great for the KX-5 user if you have this particular issue with your KX5 midi controller. This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thank you so much for looking! Check out my other items!