This file introduces the product's usage methods, precautions and safety precautions
This document is the Owner's Manual for the Yamaha PSR-140 portable keyboard. It contains essential safety warnings regarding electrical shock, battery usage, and hearing protection, as well as instructions on how to properly install and operate the instrument. The text emphasizes the importance of using only recommended accessories and following specific precautions to prevent damage or injury.
You must use the specified PA-3B adapter or an equivalent one recommended by Yamaha to avoid damage or overheating.
Batteries must be inserted correctly according to the polarity markings, and you should never mix new and old batteries or different types.
Clean the instrument using only a soft, dry cloth and avoid using paint thinners, solvents, or chemical-impregnated cloths.