Goodmans In-Car CD Player- Error 7?

Hi All, my goodmans cd player in my Fiat Seicento Sporting was working fine one day then started displaying Err 7 and ejecting CD back out. The CD player was already in the car when i bought it so i don't have manual and there is no model number on front of Face off. Sometimes it will play for a few seconds but jumps then stops playing. I've tried using CD cleaning Disc but because it will not play the CD i cannot clean the laser. Any ideas?
Thanx
Tracy