Be sure to add me to your favorites list Original Roland S-750 / RAS-750E Digital Sampler / Memory Board Service Manual / Schematics / and More Book, Printed in Japan, from 1991 This is an original Roland service manual, for the Roland S-750 / RAS-750E digital sampler / memory board expansion. It is an original service manual in very good condition, very detailed and complete. There is a little wear and marks on the covers, but no major rips or writing in it. This service manual has specs, parts list, schematics, block diagram, circuit diagrams, test mode and more. This would be great for working on and repairing your units! 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!