Replace the Drum Cartridge. It is used.
My printer all of a sudden started printing some spts on the bottom edge of the paper.
This only happens when printing letter size paper. No problems when printing legal size.
Also when printing from tray # 5 (the one that I need to feed manually, on the side of the machine) ther is no such issue.
I am attaching a picture of the issue.
Any help greatly appreciated.