This comprehensive service manual provides detailed technical information for the Yamaha RX-V461, HTR-6040, and DSP-AX461 audio/video receivers. It covers a wide range of topics, including circuitry diagrams, component specifications, troubleshooting guides, and repair procedures. The manual is designed to assist technicians, repair shops, and experienced users in understanding the internal workings of these receivers and performing necessary maintenance and repairs. It includes detailed descriptions of each component, their functions, and how they interact within the system. You'll find diagrams illustrating the signal flow, power supply circuitry, and other key aspects of the receiver's design. The manual also provides step-by-step instructions for troubleshooting common problems, identifying faulty components, and implementing effective repair solutions. This valuable resource will empower you with the knowledge and tools needed to keep your Yamaha receiver functioning optimally.