HP Compaq d220 MT, Reference Manual

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Service Reference Guide, d200 336493-004 5–5
Identifying the Chassis, Routine Care, and Disassembly Preparation
5.3.2 Cleaning the Computer Case
Follow all safety precautions in Section 5.3.1, “General Cleaning Safety Precautions,” before
cleaning the computer.
To clean the computer case, follow the procedures described below:
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To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
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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.
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For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will
evaporate quickly and not leave a residue.
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After cleaning, always wipe the unit with a clean, lint-free cloth.
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Occasionally clean the air vents on the computer. Lint and other foreign matter can block the
vents and limit the airflow.
5.3.3 Cleaning the Keyboard
Follow all safety precautions in Section 5.3.1, “General Cleaning Safety Precautions,” before
cleaning the keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in Section
5.3.2, “Cleaning the Computer Case.”
When cleaning debris from under the keys, review all rules in Section 5.3.1, “General Cleaning
Safety Precautions,” before following these procedures:
Ä
CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under
the keys.
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Visible debris underneath or between the keys may be removed by vacuuming or shaking.
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Canned, pressurized air may be used to clean debris from under the keys. Caution should be
used as too much air pressure can dislodge lubricants applied under the wide keys.
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If you remove a key, use a specially designed key puller to prevent damage to the keys. This
tool is available through many electronic supply outlets.
Ä
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.
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Cleaning under a key may be done with a swab moistened with isopropyl alcohol and
squeezed out. Be careful not to wipe away lubricants necessary for proper key functions. Use
tweezers to remove any fibers or dirt in confined areas. Allow the parts to air dry before
reassembly.
5.3.4 Cleaning the Monitor
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Wipe the monitor screen with a clean cloth moistened with water or with a towelette
designed for cleaning monitors. Do not use sprays or aerosols directly on the screen; the
liquid may seep into the housing and damage a component. Never use solvents or flammable
liquids on the monitor.
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To clean the monitor body follow the procedures in Section 5.3.2, “Cleaning the Computer
Case.”