This service manual covers the Yamaha RX-V771 AV Receiver, a 7.1 channel audio-visual receiver designed for immersive home theater experiences. Engineered with robust amplification delivering 140W per channel at 6 ohms and a frequency response of 20 Hz - 20 kHz, it supports advanced surround formats including DTS-HD Master Audio and Dolby TrueHD. Connectivity is extensive, featuring 6 HDMI inputs (one front) with 1.4a, 3D, and ARC support, along with USB, optical, coaxial, and analog audio inputs, plus Ethernet for network features and firmware updates. Its sophisticated CINEMA DSP 3D processing and Compressed Music Enhancer provide exceptional audio fidelity for a wide range of media.

The purpose of this English-language service manual is to provide comprehensive guidance for service personnel. It details critical information such as front and rear panel layouts, remote control functions, and technical specifications. Essential maintenance and repair procedures are thoroughly explained, including service precautions, disassembly steps for all major components, and methods for updating firmware via USB or network. The manual also covers the unit's self-diagnostic function, enabling efficient troubleshooting and ensuring the optimal performance and longevity of the Yamaha RX-V771 AV Receiver.