Lenovo K4450 User Manual page 40

Be careful about where and how you work
• Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage.
• Store packing materials safely out of the reach of children to prevent the risk of suffocation from plastic
bags.
• Keep the computer more than 13 cm (5 inches) away from magnets, activated cellular phones, electrical
appliances, or speakers.
• Avoid subjecting your computer to extreme temperatures (below 5°C/41°F or above 35°C/95°F).
• Some appliances, such as certain portable desktop fans or air purifiers, produce negative ions. If a
computer is close to such an appliance, and is exposed for an extended time to air containing negative ions,
it might become electrostatically charged. Such a charge might be discharged through your hands when
you touch the keyboard or other parts of the computer, or through connectors on I/O devices connected to
it. Even though this kind of electrostatic discharge (ESD) is the opposite of a discharge from your body or
clothing to the computer, it poses the same risk of a computer malfunction.
Your computer is designed and manufactured to minimize any effects of electrostatic charge. An electrostatic
charge above a certain limit, however, increases the risk of ESD. Therefore, when using the computer close to
an appliance that produces negative ions, give special attention to the following:
• Avoid directly exposing your computer to the air from an appliance that produces negative ions.
• Keep your computer and peripherals as far as possible from such an appliance.
• Wherever possible, ground your computer to facilitate safe electrostatic discharge.
Note: Not all such appliances cause a significant electrostatic charge.
Be gentle with your computer
• Avoid placing any objects (including paper) between the display and the keyboard or the palm rest.
• Do not open the display beyond 130 degrees, as this might damage the computer hinge.
• Do not turn your computer over while the ac power adapter is plugged in. This could break the adapter
plug.
Carry your computer properly
• Before moving your computer, be sure to remove any media, turn off attached devices, and disconnect
cords and cables.
• Before moving your computer, ensure that it is in sleep or hibernation mode, or turned off. This prevents
damage to the hard disk drive and avoids data loss.
• When picking up your open computer, hold it by the bottom. Do not pick up or hold your computer by the
display.
• Use a quality carrying case that provides adequate cushion and protection. Do not pack your computer in
a tightly packed suitcase or bag.
For outdoor use
• Back up your critical data before you take your computer outdoors.
• Ensure that the battery is fully charged.
• Be sure to turn off the power and close the LCD when not in use.
• When you leave the computer in your car, place it on the back seat to avoid being insolated.
• Carry the ac power adapter and power cord with the computer.
Handle storage media and drives properly
• If your computer comes with an optical drive, do not touch the surface of a disc or the lens on the tray.
• Wait until you hear the CD or DVD click into the center pivot of the drive before closing the tray.
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User Guide