I have a sharp mini disc player model MD-MT15 and all of the sudden when i finished recording and tried to turn it off it as usuall it says updating TOC, but recently at the end after it has updated it will say "U TOC error" the manual says that means it is a disc problem so i tried a new disc. The same thing happened. I have even tried new disc out of the package and they dont work either Can anyone halp me please Thanxs a lot