I have a sony mds-je480 with c13 error. I cleaned the lazer lens with a cotton bud plus video head cleaning fluid. It threw up error, so I continued testing ans found that if switched my machine and then powered up bu inserting the disc again it loaded ok. Im still persisting this method. So far it works. I hope this works for you. best wishes Reg.
Old Aged Reg.
July 2019