Sharp MD-MS702 Personal MiniDisc Player "701" Questions

'TOC error a' on sharp minidisc player 701. Has not been played for some time discs all 12 of them, give the above error. Can you help??!! users manual ...

I am in need of an owners manual for a sharp minidisc player/recorder ms-701 and cant find one on the net, could you advise me where I could get one. many thanks edward My friend got an owners manual ...