This comprehensive Yamaha RX-V495/RX-V495RDS/HTR-5140/HTR-5140RDS Service Manual is designed for service personnel and provides a detailed guide for troubleshooting and repairing these audio receivers. The manual encompasses a wide range of technical information, including detailed instructions on disassembling and reassembling the receiver, performing self-diagnosis functions, and restoring factory presets. It offers in-depth specifications for the receivers, along with clear internal view diagrams illustrating the component layout and wiring. Furthermore, it provides detailed information on adjusting amplifiers and tuners, a comprehensive breakdown of IC and display data, and comprehensive block diagrams for understanding system functionality. The manual also includes a thorough schematic diagram to aid in circuit analysis and troubleshooting, as well as a complete parts list for easy component identification and ordering.