This service manual covers Yamaha models RX-V673, HTR-6065, and RX-A720, designed to deliver advanced audio and video processing for home entertainment systems. These units are engineered to support a wide range of surround sound formats, offering multi-channel audio output and extensive connectivity options including multiple HDMI inputs and outputs, digital and analog audio inputs, and network capabilities. Their robust construction and sophisticated internal components ensure reliable performance for an immersive viewing and listening experience.

This comprehensive English-language service manual provides essential information for service personnel. It details front and rear panel layouts, remote control functions, and critical technical specifications. Furthermore, it includes vital sections on service precautions, disassembly procedures, firmware updates, and self-diagnosis functions, enabling efficient maintenance and repair to ensure the optimal operation and longevity of your Yamaha audio-visual receiver.