If you're having trouble with a specific part of the system, I can help you with: the CD changer or cassette deck Setting up the surround sound speakers Connecting modern devices like a phone or Bluetooth adapter Sony LBT-D507 Compact Hi-Fi Component System
Because these components are linked via a specific system control cable (not just RCA jacks), you cannot operate them intuitively without understanding the flow. The user manual is critical because it explains the —a proprietary Sony feature that makes the whole unit work as one. sony lbt-d507 user manual