This service manual offers comprehensive technical information for the Yamaha RX-V571/HTR-5064 AV receiver, providing detailed guidance for service personnel. It includes detailed diagrams and instructions for accessing and servicing the front and rear panels, as well as the remote control panel. The manual also provides a thorough overview of the receiver's specifications, internal views, and essential service precautions. Furthermore, it outlines the disassembly procedures for the receiver, offering step-by-step instructions to ensure proper component handling. The manual also covers procedures for updating the receiver's firmware, enabling technicians to maintain the latest software versions. Finally, it includes a section on self-diagnostic functions, allowing for efficient troubleshooting and identification of potential issues.