It might be dirty - check your local store for "Cleaning DVD" disk (it looks like a regular CD/DVD with tiny brushes attached underneath). But if this does not help, it's time to replace the drive (contact Onkyo service for spares).
It might be dirty - check your local store for "Cleaning DVD" disk (it looks like a regular CD/DVD with tiny brushes attached underneath). But if this does not help, it's time to replace the drive (contact Onkyo service for spares).