This service manual for the AIWA NSX-S555 and NSX-S556 models provides comprehensive technical information for repair and maintenance. It includes detailed diagrams, schematics, and step-by-step instructions to guide technicians through various procedures. From troubleshooting common issues to conducting advanced repairs, this manual serves as a valuable resource for anyone working on these AIWA models. The manual covers a range of topics, including component identification, circuit analysis, fault diagnosis, and repair procedures. It's designed to ensure technicians have the necessary knowledge and tools to effectively service these products.

The provided information indicates a search for a service manual for "AIWA NSX-S555 NSX-S556". However, this combination of terms doesn't directly correlate to any known vehicle, device, or machine. The "AIWA" brand is primarily associated with consumer electronics, particularly audio equipment, not automobiles. The "NSX" designation is famously used by Honda for their high-performance sports car, but the numbers "S555" and "S556" don't correspond to any known NSX model variants. Therefore, it's highly likely that the provided product name is incorrect or refers to an obscure or discontinued product. It's possible that the "AIWA NSX-S555 NSX-S556" designation could be a misinterpretation or misspelling of another AIWA product model. For example, AIWA did produce car cassette players in the past, and certain model numbers might have been related to these devices. Alternatively, the product could be a component or accessory related to a larger AIWA system, such as a speaker or amplifier. To clarify the product and find the relevant service manual, additional information is needed, such as a clearer description of the product's function, physical appearance, or any other identifying features.