Routine Care; General Cleaning Safety Precautions; Cleaning The Computer Case; Cleaning The Keyboard - HP dx2420 - Microtower PC Service & Reference Manual

Routine Care

General Cleaning Safety Precautions

1. Never use solvents or flammable solutions to clean the computer.
2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then
use the cloth on the component.
3. Always unplug the computer when cleaning with liquids or damp cloths.
4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.
5. Disconnect the keyboard before cleaning it.
6. Wear safety glasses equipped with side shields when cleaning the keyboard.

Cleaning the Computer Case

Follow all safety precautions in
computer.
To clean the computer case, follow the procedures described below:
●
To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
●
For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it with a
cloth or swab dampened with clear water.
●
For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will
evaporate quickly and not leave a residue.
● After cleaning, always wipe the unit with a clean, lint-free cloth.
● Occasionally clean the air vents on the computer. Lint and other foreign matter can block the vents
and limit the airflow.

Cleaning the Keyboard

Follow all safety precautions in
keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in
Computer Case on page
When cleaning debris from under the keys, review all rules in
on page 23
WARNING!
under the keys.
CAUTION:
CAUTION:
be used as too much air pressure can dislodge lubricants applied under the wide keys.
General Cleaning Safety Precautions on page 23
General Cleaning Safety Precautions on page 23
23.
before following these procedures:
Use safety glasses equipped with side shields before attempting to clean debris from
Visible debris underneath or between the keys may be removed by vacuuming or shaking.
Canned, pressurized air may be used to clean debris from under the keys. Caution should
before cleaning the
before cleaning the
General Cleaning Safety Precautions
Routine Care
Cleaning the
23