We were getting streaky lines, it also ask us to replace the durm which we did. Streaks have not gone away

Thanks for the reply. 2 questions

Are the 2 lines Blank lines or Black lines?



Did you have the same 2 lines BEFORE you replaced the drum unit?

Thanks for the reply. 2 questions
Are the 2 lines Blank lines or Black lines?

Did you have the same 2 lines BEFORE you replaced the drum unit?

The only thing that can cause black streaks besides the drum unit would be the fuser unit. This is the unit that heats up and "fuses" the toner onto the paper. It is located right before where the paper exits the machine. The test for this would be to run a copy and then right as the paper starts to exit the machine turn off the power. Open the right side door and remove the paper. If the lines are at the lead edge where the paper went thru the fuser but not farther down the page where printing was applied but not fused then that would indicate a fuser problem. This is the only cause I can think of which would affect copying AND computer printing. The fact that the lines are there on computer prints rules out anything in the scanner. Dirty laser optics can affect both prints and copies but the lines would be faded/blank lines not black.

The fuser is suspect especially if the 2 lines are thin black lines. The upper fusing roller is an aluminum roller with a teflon based coating on it. If the picker fingers have worn into the teflon coating the toner will stick to the aluminum and cause the lines. The only thing that can cause black streaks besides the drum unit would be the fuser unit. This is the unit that heats up and "fuses" the toner onto the paper. It is located right before where the paper exits the machine. The test for this would be to run a copy and then right as the paper starts to exit the machine turn off the power. Open the right side door and remove the paper. If the lines are at the lead edge where the paper went thru the fuser but not farther down the page where printing was applied but not fused then that would indicate a fuser problem. This is the only cause I can think of which would affect copying AND computer printing. The fact that the lines are there on computer prints rules out anything in the scanner. Dirty laser optics can affect both prints and copies but the lines would be faded/blank lines not black.
The fuser is suspect especially if the 2 lines are thin black lines. The upper fusing roller is an aluminum roller with a teflon based coating on it. If the picker fingers have worn into the teflon coating the toner will stick to the aluminum and cause the lines.