HP Color LaserJet CM2320 Multifunction Printer series - Manual (Page 207)

2. Clean the white document lid backing by using a soft cloth or sponge that has been moistened with
a mild soap and warm water. Wash the backing gently to loosen debris; do not scrub the backing.
3. Also, clean the scanner strip next to the ADF scanner glass.
4. Dry the backing by using a chamois or soft cloth.
CAUTION: Do not use paper-based wipes because they might scratch the backing.
5. If this does not clean the backing well enough, repeat the previous steps and use isopropyl alcohol
to dampen the cloth or sponge, and then wipe the backing thoroughly with a damp cloth to remove
any residual alcohol.
Clean the scanner glass
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.
NOTE: 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 scanner glass.
1. Turn off the product, unplug the power cord from the electrical socket, and raise the lid.
ENWW Manage supplies 195
NOTE: In certain areas of California, air pollution control regulations restrict the use of liquid 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.