HP LaserJet M4349 Multifunction Printer series - Manual (Page 173)

CAUTION: Clean the rollers only if you experience misfeeds or marks on the originals, and you notice
dust on the rollers. Cleaning the rollers frequently could introduce dust into the device.
1. Open the scanner lid.
2. Locate the rollers near white, vinyl calibration strips.
3. Wipe the rollers gently with a clean, water-dampened, lint-free cloth.
CAUTION: Do not pour water directly onto the rollers. Doing so might damage the device.
4. Close the scanner lid.
5. Pull the release lever to open the document-feeder cover.
ENWW Clean the device 159