Infront of me there is a mz-nh900. And its got a problem. It just can't read MD's. What does happen if I put a Md in it: -The MD begins to turn. -and the Lacerplate (Is it called like that?) is "driving" first a little bit to the ending of the md and than more to the begining...that happens 4 or 5 times until the Lacerplate is at the beginning, but than its doesnt stop and read, it just wants to drive on, and than it sounds like "Tack tack tack tack" and after a few times the error messages is: "error" So now my question: How does an md-player know where the Lacerplate is, and how does it know if it is at the begining or at the end? And what can be defect if this happens? The enige isn't the fault, I changed the complete enigepart. Please help. Sorry for my bad english, just didn't talk for a while