Yamaha PSR-S500 Keyboard Original Overall Circuit Diagram

Be sure to add me to your favorites list Yamaha PSR-S500 Portatone Keyboard Original Overall Circuit Diagram Schematics in Cover. Great, original Yamaha set of overall circuit diagrams for the PSR-S500 model Portatone workstation keyboard. This is the large overall circuit diagrams, all tucked into an original Yamaha service envelope with holes on one side of it for placing it into a binder if you wanted to do so. Lightly use and in very good, close to like new condition, with the envelope having a little storage wear. These are original documents from Yamaha, printed in Japan! 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. Thanks for looking! Check out my Ebay Store!