To clean the scanner glass (HP LaserJet 3052/3055/3390/3392 all-in-
Dirty glass, from fingerprints, smudges, hair, and so on, slows down performance and affects the
accuracy of special features such as fit-to-page and copy.
If streaks or other defects appear only on copies produced using the automatic
document feeder (ADF), clean the scanner strip (step 3). It is not necessary to clean the
Turn off the all-in-one, unplug the power cord from the electrical socket, and raise the lid.
Clean the glass by using a soft cloth or sponge that has been moistened with nonabrasive glass
Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon
tetrachloride on any part of the all-in-one; these can damage the all-in-one. Do not place
liquids directly on the glass. They might seep under it and damage the all-in-one.
Clean the scanner strip by using a soft cloth or sponge that has been moistened with
nonabrasive glass cleaner.
To prevent spotting, dry the glass by using a chamois or cellulose sponge.
Chapter 12 Managing the all-in-one and maintenance
In certain areas of California, air pollution control regulations restrict the use of
Isopropyl Alcohol (IPA) as a cleaning agent. In those areas of California, please disregard the
previous recommendations and use a dry, lint-free cloth. The cloth may be moistened with
water if desired.