If you are searching for a "Sony LBT-D507 user manual high quality" version, look for digital archives that offer . This allows you to search the document for keywords like "Troubleshooting" or "Remote Control Codes" instantly. Conclusion
The back page of the manual contains a "Troubleshooting" table. For example: "The CD skips" -> "Is the unit on a vibration-free surface?" The HQ version includes the IR sensor reset code for a frozen remote.