User manual TOSHIBA PORTEGE 3490

[. . . ] If you fail to do so, this product may not function properly and you may lose data or suffer other damage. TOSHIBA AMERICA INFORMATION SYSTEMS ("TOSHIBA"), ITS AFFILIATES AND SUPPLIERS DO NOT WARRANT THAT OPERATION OF THE PRODUCT WILL BE UNINTERRUPTED OR ERROR FREE. YOU AGREE THAT TOSHIBA, ITS AFFILIATES AND SUPPLIERS SHALL HAVE NO RESPONSIBILITY FOR DAMAGE TO OR LOSS OF ANY BUSINESS, PROFITS, PROGRAMS, DATA OR REMOVABLE STORAGE MEDIA ARISING OUT OF OR RESULTING FROM THE USE OF THE PRODUCT, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. Protection of Stored Data For your important data, please make periodic back-up copies of all the data stored on the hard disk or other storage devices as a precaution against possible failures, alteration, or loss of the data. IF YOUR DATA IS ALTERED OR LOST DUE TO ANY TROUBLE, FAILURE OR MALFUNCTION OF THE HARD DISK DRIVE OR OTHER STORAGE DEVICES AND THE DATA CANNOT BE RECOVERED, TOSHIBA SHALL NOT BE LIABLE FOR ANY DAMAGE OR LOSS OF DATA, OR ANY OTHER DAMAGE RESULTING THEREFROM. [. . . ] When fully charged it maintains this information for up to a month when the computer is powered off. The RTC battery may have become completely discharged while your computer was shipped, resulting in the following error message during startup: BAD RTC BATTERY BAD CHECKSUM (CMOS) CHECK SYSTEM To recharge the RTC battery, plug in the computer and leave it turned off for at least 24 hours. NOTE The above error message may vary by computer model. The RTC battery does not charge while the computer is turned off even when the AC adapter is charging the computer. If the RTC battery is low, the real-time clock and calendar may display the incorrect time and date, or stop working. 110 NOTE Mobile Computing Monitoring battery power It is seldom necessary to charge the RTC battery because it charges while the computer is on. If the RTC battery is low, the real-time clock and calendar may display the incorrect time and date or stop working. When Hibernation mode is enabled and the RTC battery is completely discharged, a warning prompts you to reset the real-time clock. The computer can be used while the RTC battery is being charged, although the charging status of the RTC battery cannot be monitored. Monitoring battery power The battery light indicates the battery's current charge. The indicator light: Glows green when the battery is fully charged Glows amber while the battery is being charged Does not glow if the external power source is disconnected or if the battery is completely discharged Determining remaining battery power NOTE Wait at least 16 seconds after turning on the computer before trying to monitor the remaining battery power. The computer needs this time to check the battery's remaining capacity and perform its calculations. 1 2 Click Start, Control Panel, then Performance and Maintenance. Click the Toshiba Power Management icon. Mobile Computing Monitoring battery power 111 The current power source and battery power remaining section displays the current charge state of the battery. The value displays as a percentage of remaining battery charge. 3 Click the Battery Power Meter tab. Sample Toshiba Power Management Battery Power Meter tab TECHNICAL NOTE: The computer drains the battery faster at low temperatures. Check your remaining charge frequently if you are working in temperatures below 50 degrees Fahrenheit. Remove all cables connected to the computer. Close the display panel and turn the computer upside down with the front side of the computer facing you. Slide the battery lock toward the back of the system to unlock the battery pack. Push and hold the battery release latch. 3 4 5 6 Mobile Computing Changing the main battery 115 Sample releasing the battery 7 While still holding the release latch in the open position gently lift the battery pack out of the computer. Sample removing the battery If the battery is leaking or its case is cracked, put on protective gloves to handle it, and discard it immediately following the advice in "Disposing of used batteries safely" on page 118. 116 Mobile Computing Taking care of your battery Sample inserting battery NOTE When you replace your battery, slide the battery lock towards you to lock the battery pack. Taking care of your battery The following sections offer tips on how to take care of your battery and prolong its life. Safety precautions If the battery pack produces an odor, overheats or changes color or shape while it is being used or charged, turn off the computer's power immediately and disconnect the power cord from the power socket. Carefully remove the battery pack from the computer. Do not try to disassemble a battery pack. Do not overcharge or reverse charge a battery. Overcharging will shorten its life, and reverse charging could damage it. Avoid touching the metal terminals of the battery with another metal object. Short-circuiting the battery can Mobile Computing Taking care of your battery 117 cause it to overheat and may cause damage to the battery or the computer. Do not incinerate a spent battery, as this could cause it to explode and release toxic materials. If a battery is leaking or damaged, replace it immediately. [. . . ] For a printer, resolution is expressed in dots per inch (dpi). For a screen, it is expressed as the number of pixels available horizontally and vertically. To reset the computer by reloading the operating system without turning the computer off. RJ-11 -- A modular connector used on most U. S. [. . . ]