How do I get rid of the black marks that are appearing as shown below? They are consistend on every page printed and do not get lighter as more pages are printed.
If is on the back of the printed page, it is from the transfer belt. If is on the printed side, could be from the Immaging Unit or from the fuser.
Excellent explanation,, but how do I fix this problem? If I take the printer apart will I be able to reassemble it without instructions?