This document is a copyright statement that introduces the precautions and important instructions for using the products of ROLAND CORPORATION. It also reminds users to read the complete owner's manual and keep it as a convenient reference. The manual explains the operating buttons, reference page numbers, and symbols, as well as the explanation of terms. It also points out that the display content seen by users may not always match the images in the manual. Finally, it emphasizes the importance of paying attention to wire connections.