Be sure to add me to your favorites list Original YAMAHA VX15 Guitar Amplifier Service Manual, Schematics Parts List Booklet. Original Yamaha service manual for the Yamaha guitar amp, model VX15. It's in very good condition, with no writing, rips or tears. With Specifications, General Adjustment and Check, Block Diagram, Printed Circuit Board, Schematic Diagram, Exploded Views and Parts List. Printed in Japan, from 1983! 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!