This service manual pertains to the Yamaha RX-V392 and R-V502 models. It provides comprehensive technical information designed for these specific audio-visual receivers. The manual details the engineering and design principles that underpin these units, aiming to ensure optimal performance and longevity for users.

The scope of this manual covers essential aspects for servicing and maintaining the Yamaha RX-V392 and R-V502. It includes detailed technical specifications, diagnostic procedures, and repair instructions. This document is intended to assist technicians and qualified individuals in performing accurate troubleshooting and repairs, thereby upholding the quality and functionality of the equipment.