xerox 7530 prints straight horizontal line

[NNA 2017]

There is a thin horizontal line printing on all of our copies, scans, and print jobs. I printed the print quality troubleshooting report and was able to pull out the cleaning rods on each drum cartidge as per the instructions. It made no difference. I did this 3 times. we also changed the corresponding drum cartridges and there was also no difference. What can we do to fix this? any suggetions?

[Joe053204-hcl]

Take out the fuser (in the left side of the machine above the bypass tray) and see if it has the line (probably a ring all the way around it), Replace if the line is there. You need to unscrew the 2 thumbscrews (orange) to take it out