HP Officejet Pro L7380 All-in-One Printer - Manual (Page 157)

Dust or dirt on the scanner glass, ADF lid backing, or ADF frame can slow down
performance, degrade the quality of scans, and affect the accuracy of special features
such as fitting copies to a certain page size.
Clean the scanner glass
To clean the scanner glass
1. Turn off the device.
2. Lift the ADF.
3. Clean the glass by using a soft, lint-free cloth that has been sprayed with a mild
glass cleaner. Dry the glass with a dry, soft, lint-free cloth.
CAUTION: Use only glass cleaner to clean the scanner glass. Avoid cleaners
that contain abrasives, acetone, benzene, and carbon tetrachloride, all of which
can damage the scanner glass. Avoid isopropyl alcohol because it can leave
streaks on the glass.
CAUTION: Do not spray the glass cleaner directly on the glass. If too much
glass cleaner is applied, the cleaner could leak under the glass and damage
the scanner.
4. Close the ADF, and turn on the device.
Clean the automatic document feeder (ADF)
The ADF requires periodic cleaning depending on the amount of use and the type of
paper that is fed through it. If you use the ADF several times per week, monthly
cleaning is recommended. Set up a cleaning routine that is appropriate for the device.
If streaks exist on scanned documents, cleaning the ADF frame might solve the
problem.
Clean the device 153