device: Sony mz-n707 sonicstage ver : 3.3(full) disc : tdk (74MB) type record : Line-in (PC to MD) the recording process was success and my device writen "data save" and "toc edit".. but, after thoose following steps and my device plug off from PC, i turn on the device, and the device says " BLANK DISC" .. is there any chance that my recorder optic damage, or is there any posible-damage thing ? anyway,thanks..