Press the Power button to turn off the printer, if it is not off already.
Disconnect the power cord from the rear of the printer.
You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.
Open the cartridge access door.
Locate the paper path cover in the area behind the cartridge access area.
To remove the paper path cover, pinch the tabs together, and then lift up.
Pinch the tabs together
Lightly dampen the swab with the water, and then squeeze any excess liquid from the swab.
Press the swab against the rollers inside the printer, and then rotate the rollers upwards with your fingers. Apply a moderate amount of pressure to remove any dust or dirt buildup.
Allow the rollers to dry for 10 to 15 minutes.
Check the rollers on the underside of the paper path cover. Make sure that the rollers are not missing, that they turn easily, and that they are springy when you press them. If the rollers are damaged, replace the paper path cover with a new one.
Replace the paper path cover with the spring-loaded tabs facing toward the front of the printer. Gently press the cover down at the left and right edges. The cover clicks into place.
Make sure that both edges of the paper path cover are in place.
Figure : Replace the paper path cover
Close the cartridge access door.
Reconnect the power cord to the rear of the printer, and then turn on the printer.
Press OK to clear any messages on the printer control panel.
You can refer this HP document for more assistance:- Click here
I hope that helps.
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