Why won't the unit play my disc?

A. Try to play discs with different formats such as DVD/DVD-R/DVD+R/DVD-RW/DVD+RW/VCD/CD/CD-R/CD-RW/MP3/MP4 etc. Check whether the error occurs only with specific formats or occurs universally. 

B. Make sure that you insert the disc correctly (label side UP) and that the disc is clean and in good condition. 

C.Read the message that appears when the error occurs (Loading/No disc/Error,etc.) 

D. Reconnect the power cables and reset the unit.