This service manual provides comprehensive technical information for the AIWA NSX-D656R, NSX-D757, and NSX-D757R car audio systems. It includes detailed diagrams, schematics, troubleshooting guides, and repair procedures. This manual is an essential resource for technicians and individuals seeking to understand the inner workings, diagnose issues, and perform repairs on these audio systems. It covers a range of topics, including the operation of each component, common problems and solutions, and step-by-step instructions for disassembly, repair, and reassembly. With this manual, users can confidently approach any repair or maintenance task related to these AIWA car audio systems.

The AIWA NSX-D656R, NSX-D757, and NSX-D757R are not car models. They are actually car audio systems produced by AIWA, a renowned Japanese electronics company known for its high-quality audio equipment. These models were popular in the late 1990s and early 2000s, offering a range of features designed to enhance the listening experience in vehicles. The NSX-D656R, NSX-D757, and NSX-D757R were likely part of AIWA's flagship car audio lines, boasting advanced technology and impressive audio performance. While the specific details of each model are unclear without further information, it is safe to assume that they included features common to high-end car audio systems of the time. This could include features like CD players with MP3 playback, built-in amplifiers, multiple speaker outputs, equalization settings, and possibly even advanced features like Bluetooth connectivity for hands-free calling and music streaming. These systems were designed to provide a high-fidelity audio experience for car owners, offering clear sound reproduction, powerful bass response, and customizable settings to suit individual preferences. Although AIWA is no longer in the car audio business, the NSX-D656R, NSX-D757, and NSX-D757R remain sought-after models by audio enthusiasts who appreciate their quality and performance.