Yes, dirty paper feed rollers are the culprit. Clean them.
From the printer:
- Power on. Remove all paper from the front tray.
- Open the paper output tray.
- Hold the Stop button until the Alarm lamp flashes seven times, release. The rollers will spin clean.
- Once they stop, close the output tray, load one sheet of plain A4 or Letter paper (or a store-bought cleaning sheet) into the front tray.
- Open the output tray extension and support.
- Hold the Stop button until the Alarm lamp flashes seven times again, release. The page will eject, completing the clean.
From your computer:
- Open the printer driver setup window.
- Go to the Maintenance tab, click 'Roller Cleaning'.
- Follow the on-screen prompts: remove all paper first, then load a single sheet when instructed.
If that didn't work: Check for tiny paper scraps stuck inside. If the problem continues after cleaning, the rollers may be worn out—contact service.
Heads up: This cleaning wears the rollers a bit, so only do it when necessary.