Disc Error : Disc Fout (portable DVD) (LG 7" Portable DVD Player)

[qanda]This thread is about the LG 7" Portable DVD Player. Click here to see full specs[/qanda]I have an LG portable DVD/CD player model DP382-NR from Future Shop. when I put in a CD, I get the following disc error: ‘Disc Fout’. What does this mean and how can I fix it?