This comprehensive service manual provides detailed technical information for the Kenwood KRF-V4060D/V4060DE/V4060DE-S/V4060D-S car stereos, along with accompanying models KRF-V5060D/V5060DE/V5060D-S/V5560D/V5560D-S and VR-605/615. The manual offers a thorough understanding of the car stereos' circuitry, including a detailed circuit description, a clear layout of the PC boards, and comprehensive schematic diagrams. This information is crucial for technicians and repair specialists to diagnose and fix any issues that arise with these car stereos.

The Kenwood KRF-V4060D, along with its variations including the KRF-V4060DE, KRF-V4060DE-S, and KRF-V4060D-S, were car stereos manufactured by Kenwood. This series was known for its robust features and performance, catering to audiophiles who demanded high-quality sound reproduction in their vehicles. The service manual suggests that the range also included the KRF-V5060D, V5060DE, V5060D-S, V5560D, and V5560D-S models, indicating a wider offering of similar functionalities and technology. The Kenwood KRF-V4060D series was likely equipped with advanced audio circuitry, allowing for powerful amplification and detailed sound reproduction. The service manual's inclusion of schematic diagrams highlights the intricate design and components that contribute to the car stereos' audio fidelity. The manual also mentions "VR-605/615", hinting at other related components or accessories that may have been included with these models. It's important to note that the service manuals' lack of specific year coverage makes it difficult to pinpoint the exact year of manufacture or any significant updates or changes that may have occurred during the series' lifespan. Nonetheless, the Kenwood KRF-V4060D series is a testament to Kenwood's dedication to delivering audio excellence in the automotive realm.