I have repeatedly played and recorded -R discs. Suddenly I get a message "That the disc is not reconized . to check the dis"c. I have tried several discs, all good discs the have been played before in this unit. and I always get the same message. The unit will not play at all, much less record. I have tried to clean the lasers, but the unit wont play the Cleaning Disc, I get the same message. What is the problem? Solution? lserpas@aol.com