This service manual provides a comprehensive guide for servicing the Yamaha RX-V565, HTR-6250, and AX-V565 home theater receivers. It offers detailed information about the receiver's components and functions, including: * **Front and rear panel diagrams:** Detailed illustrations of the receiver's exterior, outlining each button, port, and connection. * **Remote control panel diagram:** A clear representation of the remote control's layout and button functions. * **Specifications:** Comprehensive technical specs, encompassing power output, frequency response, input/output configurations, and other key performance parameters. * **Internal view:** Visual representations of the receiver's internal layout, showcasing the placement of circuit boards, connections, and other components. * **Service precautions:** Essential safety guidelines and warnings to be followed during servicing procedures. * **Disassembly procedures:** Step-by-step instructions on how to safely disassemble the receiver for repair and maintenance purposes. * **Updating:** Guidance on how to update the receiver's firmware for the latest features and performance enhancements. This manual is an essential resource for qualified technicians and service personnel, providing the knowledge and instructions necessary to troubleshoot and repair these Yamaha home theater receivers effectively.