Oki Tech Support is telling me I need to replace the black drum. There are black smears on the edge of about 25% of my prints, especially when I'm printing the back side (manually, no duplex add-on). The smears are always on the very edge in the unprintable margin area and are always black.
The printer is just out of warranty but has barely been used. I still have 80% or more of all original toners and the drum is suppose to be 20k prints. I don't think I've done even 100 prints! This doesn't seem right. Is there anything else I can do besides buy a new drum?
Well if Oki Tech Support tells you to replace it, why would you think someone else would have a better answer.
Here's an idea, call Epson support and see what they say.