Lenovo M4400s notebook - Manual (Page 56)

• Keep your computer more than 13 cm or 5 inches away from magnets, activated cellular phones,
electrical applicances, 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.
• When installing the hard disk drives, follow the instructions shipped with your hardware, and apply
pressure only where needed on the device.
• Turn off your computer if you are replacing the hard disk drive.
42 User Guide