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• 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, can 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 may become electrostatically charged. Such a charge may 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, can increase the risk of ESD. Therefore, when using the computer close to an appliance that can produce negative ions, give special attention to the following: - Avoid directly exposing your computer to the air from an appliance that can produce negative ions. - Keep your computer and peripherals as far as possible from such an appliance. 79 Lenovo 3000 N500 UG V1.0_en.book Page 80 Monday, September 1, 2008 9:44 AM Chapter 6. Safety, Use, and Care Information - Wherever possible, ground your computer to facilitate safe electrostatic discharge. • Note: Not all such appliances cause a significant electrostatic charge. When you handle options or CRUs, or perform any work inside the computer, take the following precautions to avoid static-electricity damage: - Limit your movement. Movement can cause static electricity to build up around you. - Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the edges. Never touch exposed circuitry. - Prevent others from touching components. - When you install a static-sensitive option or CRU, touch the static- protective package containing the part to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity in the package and your body. - Whenever possible, remove the static-sensitive part from the static- protective packaging and install the part without setting it down. When this is not possible, place the static-protective packaging on a smooth, level surface and place the part on it. - Do not place the part on the computer cover or other metal surface. 80 Lenovo 3000 N500 UG V1.0_en.book Page 81 Monday, September 1, 2008 9:44 AM Chapter 6. Safety, Use, and Care Information • Be Gentle with Your Computer • Avoid placing any objects (including paper) between the display and the keyboard or under the keyboard. • Do not drop, bump, scratch, twist, hit, vibrate, push, or place heavy objects on your computer, display, or external devices. • Avoid turning the display by over 130° . • Carry Your Computer Properly • Before moving your computer, be sure to remove any media, turn off attached devices, and disconnect cords and cables. • Be sure your computer is in sleep or hibernation mode, or turned off, before moving it. This will prevent damage to the hard disk drive and 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 • Backup any critical data before you take your computer outdoors. • Ensure that the battery is full. • Be sure to turn off the power and close the LCD well. 81 Lenovo 3000 N500 UG V1.0_en.book Page 82 Monday, September 1, 2008 9:44 AM Chapter 6. Safety, Use, and Care Information • Do not leave anything between the closed LCD and the keyboard. • If you leave the computer in your car, place it where it will not be exposed to direct sunlight. • Carry the AC 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 an optical drive before closing the tray. • When installing your hard disk, follow the instructions shipped with your hardware, and apply pressure only where needed on the device. • Data Safety • Do not delete unknown files or change the name of files or directories that were not created by you; otherwise, your computer software might fail to work. • Be aware that accessing network resources can leave your computer vulnerable to computer viruses, hackers, spyware, and other malicious activities that might damage your computer, software, or data. • It is your responsibility to ensure that you have adequate protection in the form of firewalls, antivirus software, and anti-spyware software and keep this software up to date. 82 Lenovo 3000 N500 UG V1.0_en.book Page 83 Monday, Septem...
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