read the unit manual here - Brash Imports

TroubleshootingDVD playerSymptomsCausesRemediesDisc cannot be inserted. There is a disc in the unit already. Eject the disc then insert another one.Disc cannot be played back.Disc is scratched.Disc is too dirty or wet.The pickup is dirty.Disc is not compatible with the unit.Change the disc.Clean the disc.Clean the pickup with cleaning disc.Change the disc.Disc is inserted up side down..The disc 's region code is not the sameas the unit 's.Insert the disc correctly.Change the disc.Subtitle cannot be shown. There is no subtitle file in the disc. Change another disc containing subtitle files.Audio language/subtitlecannot be changed.View angle cannot bechanged.Image distortion.PBC is invalid when playingback VCD.Repeat playback or GOTO searchis invalid when playing back VCD.There is only one audio language/subtitlein the disc.There is just one view angle in the disc.Multi-angle view is not available for thesegment playing back now.The disc is protected by the copyright.The disc does not support PBC.PBC is on.28Change another disc containing multi-languageaudio or subtitle.Change another disc containing multi-angle.Select another segment to play back.The unit is compatible with copy system; hencesome discs contained the informationof copyingprohibited cannot be played back.Change another disc with PBC function.Close PBC function.