Printer Repair Questions? Ask IT Technicians for Answers ASAP
Hi there and welcome
Can you power off the printer and disconnect the power cable.
Then open it where you put the cartridges in and using a damp cloth wipe all rollers down as well as the guides where the paper comes into contact with the printer, especially around the areas where the lines are appearing on the paper.
Once done, wait 20 minutes for the printer to dry and close it back up, power it on and tell me if you still have the lines please.