YAMAHA DGC1B OWNER'S MANUAL(1)(1)
User Manual
This document is about the user manual of a product, reminding users not to perform controls, adjustments, or procedures other than those specified, which may result in hazardous radiation exposure. It also mentions FCC information, including not modifying the product, using high-quality shielded cables, etc. The product complies with FCC requirements and has a reasonable level of assurance to prevent interference with other electronic devices.