HP Color LaserJet 4730 Multifunction Printer series - Manual (Page 255)

8. Locate the separation pad.
9. Wipe the pad with a clean, water-dampened, lint-free cloth.
10. Close the ADF cover.
Cleaning the mylar strip
Clean the mylar strips on the underside of the scanner lid only if you are experiencing a decrease in
copy quality (such as vertical lines) during copying using the ADF.
To clean the mylar strip
1. Open the scanner lid.
ENWW Cleaning the MFP 235