I have a Ford Factory FM modulated 6cd Changer. The model is a F6FF-18C829-JA and it will not read any cd's. I am putting the discs in correctly into the magazine. It recognizes the cd's are in the magazines but when it tries to read them I have 2 codes that come up it is either one or the other. E-8 which from the manual says the cause is "Condition that can't reach to regular speed mode" and sometimes E-9 which is "Disc reading malfunction" I have tried several different cd's and nothing works. I also took the unit out of the truck and cleaned the eye. Does anyone have any ideas?

Thanks in advance