This comprehensive service manual provides detailed technical information and repair procedures for the Yamaha RX-396RDS and RX-496RDS audio systems. It includes circuit diagrams, component specifications, troubleshooting guides, and step-by-step instructions for disassembling, repairing, and reassembling these receivers. The manual is an essential resource for technicians and individuals who want to understand the inner workings of these audio systems and perform repairs or maintenance.