Typo in the title. That should be CLD-79. No matter what disc I put into the player (LD or CD), my new CLD-79 will only display "U1" onscreen and in the player's display. According to the instruction manual, this means that the disc is dirty, but I've tried many discs, and all are flawless as far as I can see. I let the unit stand overnight thinking it might be condensation on the lens because it had been sitting in the entranceway to my building all day, but it's still not working. Anyone have any idea what the problem is? I haven't seen any of the other error messages that are listed in the back of the manual. Thanks.