Be sure to add me to your favorites list Original Service Notes for the Boss CS-1 Compression / Sustainer Effects Foot Pedal Unit. This is a vintage Roland / Boss service manual for the Boss CS1 Compression / Sustainer Effects Pedal in rough but usable condition. There are numerous stains and marks, and one large rip in the center of it, but all of the information can still be seen. It's seen better days and is well used, but it will still be helpful for working on your CS-1 pedal. These service notes are 1 page, front and back. Original Roland / Boss document, printed in Japan, from 1980. 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!