Be sure to add me to your favorites list Original Yamaha Tyros3 Digital Workstation Overall Circuit Diagram / Schematics Sheets, in their cover. Also covers the TRS-MS02 Monitor Speakers These are a great original Yamaha set of overall circuit diagrams for the big Tyros 3 model of Digital Workstation. Also covers is the TRS-MS02 Monitor Speaker system as well. These are the large overall circuit diagrams / schematics, all tucked into an original Yamaha envelope with punch holes on one side of it for placing it into a binder if you wanted to do so. These are very lightly used and in near like new condition, with the cover envelope having some creases from storage. 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! Please check out my Store!