Be sure to add me to your favorites list Yamaha DGX-220 YPG-225 Keyboard Original Overall Circuit Diagram Schematic Sheets, in Yamaha Folder. Great, original Yamaha set of overall circuit diagrams for the DGX220 and YPG225 models of Portable Grand keyboards. This has the overall circuit diagram, 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. These are in very good to near like new condition, with some minor 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 Store!