This manual covers the Yamaha RX-397 Stereo Receiver, a versatile audio component designed for high-fidelity sound reproduction. Engineered for reliability and exceptional audio performance, the RX-397 features a robust amplifier section capable of delivering 70W + 70W (RMS) into 8 ohms and 95W + 95W (RMS) into 4 ohms. Its PLL synthesized tuning system provides precise AM/FM reception, while a comprehensive array of inputs, including a dedicated phono input, allows for seamless integration with various audio sources. The unit's solid construction and thoughtful design ensure it meets the demands of discerning audio enthusiasts.

The purpose of this Service Manual is to provide comprehensive technical information for the maintenance, repair, and servicing of the Yamaha RX-397. It details critical specifications, diagnostic procedures, and component-level repair instructions. This document is intended for use by qualified technicians and service personnel, offering the necessary guidance to ensure the optimal performance and longevity of the audio receiver. Coverage includes detailed schematics, parts lists, and troubleshooting guides to facilitate efficient and accurate service.