Be sure to add me to your favorites list Great Reproduction / Copy of the 1983 Roland Service Manual Notes for the Vintage Roland Jupiter 6 JP-6 Keyboard Synthesizer. This is a very well done reproduction / copy of the vintage Roland service manual for the classic 1983 Roland JP-6 / Jupiter 6 keyboard synthesizer. The person who made this did a professional job, with the larger fold-out sheets being faithfully reproduced to the same size as the originals were. It is very good condition, very large, detailed and complete. This has specs, dis assembly, circuit boards, parts lists, schematics and much more. Great copy of the original Roland document! 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! Check out my Store!