Yamaha PSR-1500 PSR-3000 Keyboard Original Overall Circuit Diagram /

Be sure to add me to your favorites list Yamaha PSR-1500 and PSR-3000 Keyboard Original Overall Circuit Diagram / Schematics in Cover. Great original Yamaha set of overall circuit diagrams for the PSR-1500 and PSR-3000 models of Portatone workstation keyboards. These are 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 used and in very good, close to like new condition, with the envelope having a some storage wear and creases. 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. Thank you so much for looking! Thanks for looking! Check out my Ebay Store!