Yamaha PSR-1100 PSR-2100 Keyboard Original Overall Circuit Diagram /

Be sure to add me to your favorites list Yamaha PSR-1100 and PSR-2100 Keyboard Original Overall Circuit Diagram / Schematics in Cover. Great original Yamaha set of overall circuit diagrams for the PSR1100 and PSR2100 models of Portatone portable 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 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. Thanks for looking! Check out my Ebay Store!