While official paper manuals can be rare for this 1993–1995 era system, digital versions are available: Руководства для LBT-D507 | Sony RU

Includes at least five audio inputs and three video inputs, allowing for the integration of external devices like camcorders or modern Bluetooth adapters. User Manual Essentials LBT-D507 User Manual

The Sony LBT-D507 user manual is widely regarded as a comprehensive guide for managing this vintage 1990s high-fidelity component system. While Sony's official regional support pages often list the manual as currently unavailable for direct download, it remains accessible through archival and third-party documentation sites.