Be sure to add me to your favorites list Yamaha CS01 II Service Manual, Schematics, Parts Lists, Hard Copy Reproduction Booklet This is a very good hard copy (paper) scanned and printed reproduction of the Yamaha service manual for the CS01 II mini synth keyboard from the 1980's, in great condition. I scanned this myself some years ago. This would also be helpful with the original CS01, as they share many components. It would be very helpful to work on / test / fix / and circuit bend your CS01II! 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!