HP 420 User's Guide download pdf (Page 66)

Cleaning the keyboard

CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from

under the keys.

●

If the keyboard has an on/off switch, turn it off.

●

Follow the safety precautions in the Maintenance and Service Guide for your workstation before

cleaning the computer.

●

Visible debris underneath or between the keys can be removed by vacuuming or shaking.

●

Canned, pressurized air can be used to clean debris from under the keys. Use caution because

too much air pressure can dislodge lubricants applied under the wide keys.

●

If you remove a key, use a specially designed key remover to prevent damage to the keys. This

tool is available from many electronic supply outlets.

CAUTION: Never remove a wide key (like the space bar key) from the keyboard. If these keys

are improperly removed or installed, the keyboard might not function properly.

●

Clean under a key with a swab moistened with isopropyl alcohol and squeezed out. Be careful

not to wipe away lubricants necessary for proper key functions. Allow the parts to air dry before

reassembly.

●

Use tweezers to remove any fibers or dirt in confined areas.

Cleaning the monitor

●

Follow the safety precautions in the Maintenance and Service Guide for your workstation before

cleaning the computer.

●

To clean the monitor, wipe the monitor screen with a towelette designed for cleaning monitors or a

clean cloth moistened with water.

CAUTION: Do not use sprays or aerosols directly on the screen—the liquid might seep into the

housing and damage a component.

Never use solvents or flammable liquids on the monitor because display or housing damage may

result.

58 Chapter 9 Routine Care

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HP 420 User's Guide Page 66