This service manual covers the Yamaha RX-A820, a sophisticated audio-visual receiver designed for home entertainment. It features a 7.2 channel amplifier configuration, delivering 140W per channel at 8 ohms and 170W per channel at 6 ohms, with a high slew rate and discrete amplifier construction for superior sound reproduction. The unit supports advanced audio formats like Dolby TrueHD and DTS-HD Master Audio, and includes 8 HDMI inputs and 2 HDMI outputs with HDCP 1.4 compliance. Its robust build is evident in its dimensions of 17-1/8" width, 6-3/4" height, and 16-3/8" depth, weighing 26.5 lbs.

This comprehensive service manual provides essential information for maintaining and repairing the Yamaha RX-A820. It details critical maintenance procedures, including specific cleaning instructions and component replacement steps. A thorough troubleshooting section is included to assist in diagnosing and resolving common issues. Technical specifications and performance data are also presented, enabling technicians and owners to understand and effectively manage the unit's capabilities and ensure its optimal performance and longevity.