Clean the glass
Dirty glass from fingerprints, smudges, hair, and dust slows down performance and
affects the accuracy of features such as
Fit to Page
Turn off the HP all-in-one, unplug the power cord, and raise the lid.
When you unplug the power cord, the date and time are erased. You will
need to reset the date and time later, when you plug the power cord back
in. Any faxes stored in memory are also erased.
Clean the glass with a soft cloth or sponge slightly moistened with a nonabrasive
Do not use abrasives, acetone, benzene, or carbon tetrachloride
on the glass; they can damage it. Do not place or spray liquid directly on the
glass; the liquid might seep under the glass and damage the device.
Dry the glass with a chamois or cellulose sponge to prevent spotting.
Make sure you clean the small glass strip to the left of the main glass
surface. This strip is for processing jobs from the automatic document
feeder. Streaks can occur if the glass strip is dirty.
HP Officejet 7300/7400 series all-in-one