This service manual pertains to the Yamaha RX-V661/HTR-6060/DSP-AX761 AV Receiver, a sophisticated home theater component designed to deliver an immersive audio-visual experience. Engineered with precision, this receiver boasts a 7.1 channel configuration, offering 90W per channel and supporting advanced audio decoding technologies such as Dolby Digital, Dolby Pro Logic II, DTS-ES, and DTS Neo:6. Its extensive connectivity options include multiple HDMI inputs, digital and analog audio inputs, and component video inputs, facilitating seamless integration with a wide range of audio and video sources. The inclusion of YPAO room acoustic optimization and multiple Cinema DSP modes further enhances its performance, providing a customizable and high-fidelity entertainment environment.

The purpose of this English service manual is to provide comprehensive guidance for the maintenance, repair, and technical understanding of the Yamaha AV Receiver. It covers essential areas including detailed technical specifications, operational procedures, troubleshooting diagnostics, and safety precautions. This document is an invaluable resource for owners, technicians, and service professionals seeking to ensure the optimal performance and longevity of their equipment. By following the procedures and information contained within, users can effectively maintain and repair the unit, addressing potential issues and understanding its intricate workings.