Lenovo 3000 Series User Manual page 58

Lenovo Notebook Computer User Guide
4.1.2 Environmental requirements
Keep the temperature around the computer in the range of
10‐35℃ while you are using the computer.
Do not use the computer in a humid, extremely hot or cold,
vibrating, dusty environment or under direct sunshine.
The slots and opening on the shell of the computer are used for
ventilation. Do not jam or cover these slots and openings to
prevent the computer from being over heated. Do not place the
computer on bed, sofa or other similar places; otherwise these
ventilation slots might be jammed.
Keep the computer at least 13cm away from electric appliances
which have strong magnetic radiations such as TV set,
refrigerator, motor or large speakers.
Do not move the computer from a cold environment to a warm
place suddenly. When the temperature difference is over 10℃,
condensation phenomenon will happen inside the computer and
damage storage media.
Do not place the computer on an unbalanced surface.
4.1.3 Cleaning your computer
Do not clean your computer when it is powered on.
Wipe the shell of the computer with a soft cloth.
Use a soft cloth that does not leave any residue to clean the LCD.
Do not use soap or detergent.
Dusts or stains will compromise the touchpad's sensitivity.
58