This service manual covers the Yamaha RX-V495, RX-V495RDS, HTR-5140, and HTR-5140RDS AV receivers. These models are engineered to provide a robust home theater experience, likely featuring 5.1 channel surround sound capabilities, AM/FM tuning with RDS functionality, and a comprehensive array of digital and analog audio/video inputs and outputs. While specific production years are not detailed, these units represent a significant era in home entertainment technology, designed for reliability and performance in audio-visual setups.

The purpose of this English-language service manual is to provide detailed technical information for the maintenance and repair of these Yamaha AV receivers. It encompasses a wide range of critical sections, including remote and front/rear panel layouts, comprehensive specifications, internal views, disassembly procedures, self-diagnosis functions, and adjustment procedures for the amplifier and tuner. Furthermore, it includes essential documentation such as IC data, display data, block diagrams, printed circuit board layouts, schematic diagrams, and a complete parts list, ensuring that technicians and owners have the necessary resources to keep the equipment in optimal working condition.