This service manual pertains to the Onkyo TX-DS939 audio-visual receiver. Designed for home entertainment enthusiasts, this model represents a significant advancement in audio processing and amplification technology, offering superior sound reproduction and a comprehensive suite of features for a premium listening experience. Its robust construction and sophisticated internal components are engineered for durability and consistent performance, ensuring reliable operation for years to come.

This manual serves as an essential technical resource for servicing and maintaining the Onkyo TX-DS939. It provides detailed information covering a wide range of topics, including schematics, component identification, troubleshooting guides, and repair procedures. Technicians and qualified individuals will find the precise instructions and specifications within this document invaluable for accurately diagnosing issues and performing effective repairs, thereby preserving the optimal functionality of the audio-visual receiver.