This service manual for the AIWA NSX-D939 audio system provides comprehensive technical information for repair and maintenance. It includes detailed schematics, component diagrams, troubleshooting guides, and repair procedures. The manual covers all aspects of the system, from basic operation to advanced diagnostics. With this manual, you'll have access to the knowledge and instructions needed to effectively service and repair your AIWA NSX-D939.

The AIWA NSX-D939 was a high-end audio receiver that was renowned for its sophisticated design, powerful sound, and advanced features. It was produced by AIWA, a Japanese electronics manufacturer known for its high-quality audio products in the 1980s and 1990s. This receiver was a testament to AIWA's commitment to audio excellence, featuring a robust amplifier that delivered clear and powerful audio reproduction. The NSX-D939 boasted an impressive array of features, including a built-in Dolby Pro Logic decoder for surround sound experience, a graphic equalizer for fine-tuning the sound to your preferences, a high-quality AM/FM tuner with excellent reception, and multi-band operation for diverse audio sources. Beyond its technical excellence, the NSX-D939 was distinguished by its elegant design. Its sleek black finish, with its brushed aluminum front panel, complemented contemporary aesthetics while adding a touch of sophistication to any home audio setup. The receiver was equipped with a large, easy-to-read display that displayed essential information like volume, input source, and tuning frequency. The NSX-D939 was also designed with user convenience in mind, featuring a well-organized control panel with clear labeling and smooth operation. Its extensive connectivity options allowed for seamless integration with various audio components, making it the perfect centerpiece for any discerning audiophile's system. The AIWA NSX-D939 was a testament to the company's commitment to creating high-quality and innovative audio products that offered a rich listening experience for discerning audiophiles.