User manual ACER ASPIRE 7720G

[. . . ] Aspire 7720G/7720/7320 Series User's Guide Copyright © 2007. Aspire 7720G/7720/7320 Series User's Guide Original Issue: 05/2007 Changes may be made periodically to the information in this publication without obligation to notify any person of such revisions or changes. Such changes will be incorporated in new editions of this manual or supplementary documents and publications. This company makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims the implied warranties of merchantability or fitness for a particular purpose. [. . . ] If there are error messages or beeps reported by your computer, write them down as they appear on the screen (or the number and sequence in the case of beeps). You are required to provide the following information: Name: _____________________________________________ Address: ___________________________________________ Telephone number: _________________________________ Machine and model type: ____________________________ Serial number: ______________________________________ Date of purchase: ___________________________________ 44 English Battery pack The computer uses a battery pack that gives you long use between charges. Battery pack characteristics The battery pack has the following characteristics: · · Employs current battery technology standards. Delivers a battery-low warning. The battery is recharged whenever you connect the computer to the AC adapter. Your computer supports charge-in-use, enabling you to recharge the battery while you continue to operate the computer. However, recharging with the computer turned off results in a significantly faster charge time. The battery will come in handy when you travel or during a power failure. It is advisable to have an extra fully charged battery pack available as backup. Contact your dealer for details on ordering a spare battery pack. Maximizing the battery's life Like all other batteries, your computer's battery will degrade over time. This means that the battery's performance will diminish with time and use. To maximize your battery's life, you are advised to adhere to the recommendations set out below. Conditioning a new battery pack Before you use a battery pack for the first time, there is a "conditioning" process that you should follow: 1 2 3 4 5 6 Insert the new battery without turning the computer on. Connect the AC adapter and fully charge the battery. Turn on the computer and operate using battery power. Fully deplete the battery until the battery-low warning appears. Reconnect the AC adapter and fully charge the battery again. 45 Use this conditioning process for all new batteries, or if a battery hasn't been used for a long time. If the computer is to be stored for more than two weeks, you are advised to remove the battery pack from the unit. Warning: Do not expose battery packs to temperatures below 0°C (32°F) or above 45°C (113°F). Extreme temperatures may adversely affect the battery pack. By following the battery conditioning process you condition your battery to accept the maximum possible charge. Failure to follow this procedure will prevent you from obtaining the maximum battery charge, and will also shorten the effective lifespan of the battery. In addition, the useful lifespan of the battery is adversely affected by the following usage patterns: · Using the computer on constant AC power with the battery inserted. If you want to use constant AC power, you are advised to remove the battery pack after it is fully charged. Not discharging and recharging the battery to its extremes, as described above. Frequent use; the more you use the battery, the faster it will reach the end of its effective life. A standard computer battery has a life span of about 300 charges. · · Installing and removing the battery pack Important! [. . . ] Usage allowed in the countries of European Union, as well as Norway, Switzerland, Iceland and Liechtenstein. This device must be used in strict accordance with the regulations and constraints in the country of use. For further information, please contact local office in the country of use. The FCC RF safety requirement The radiated output power of the wireless LAN Mini PCI Card and Bluetooth card is far below the FCC radio frequency exposure limits. Nevertheless, the notebook PC series shall be used in such a manner that the potential for human contact during normal operation is minimized as follows: 1 Users are requested to follow the RF safety instructions on wireless option devices that are included in the user's manual of each RF option device. Caution: To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm (8 inches) must be maintained between the antenna for the integrated wireless LAN Mini PCI Card built in to the screen section and all persons. Note: The Acer wireless Mini PCI adapter implements a transmission diversity function. [. . . ]