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For the Windows® XP Professional operating system when connected to a domain server, follow these steps to power down the computer using the Stand by command: 1 Click the Start button, then select Shut down. The Shut Down Windows dialog box appears. 84 84 Learning the Basics Using Stand by 2 Select Stand by from the drop-down list of options. 3 Click OK. The computer saves the status of all open programs and files to memory, turns off the display, and goes into a low-power mode. The on/off light blinks green to indicate the machine is in Stand by mode. NOTE: If you power down using the Stand by command and the battery discharges fully, your information will be lost. Be sure to save your work first. Starting again from Stand by To start the computer from Stand by mode, press the power button. The computer returns to the screen you were using. Chapter 4 Mobile Computing This chapter covers all aspects of using your computer while traveling. Toshiba’s energy-saver design Your computer enters a low-power standby mode when it is not being used, thereby conserving energy and saving money in the process. It has a number of other features that enhance its energy efficiency. Many of these energy-saving features have been set by Toshiba. We recommend you leave these features active, allowing your computer to operate at its maximum energy efficiency, so that you can use it for longer periods while traveling. Running the computer on battery power The computer contains a removable nickel-metal hydride (NiMH) high-capacity battery that provides power when you are away from an AC outlet. You can recharge it many times. In addition, the computer has an internal real-time clock (RTC) battery. The RTC battery powers the RTC memory, 85 86 86 Mobile Computing Running the computer on battery power which stores your system configuration settings and the current time and date for up to a month while the computer is turned off. Battery safety precautions . Never try to disassemble a battery. . Never overcharge or reverse charge a battery. Overcharging will shorten its life and reverse charging could destroy it, causing the release of toxic fumes. . Avoid touching the metal terminals of the battery with another metal object. Short-circuiting the battery will cause it to overheat and may cause permanent damage to the battery or the computer. . Never incinerate a spent battery as this will cause it to explode, releasing toxic materials. . If a battery is leaking or damaged, replace it immediately. Use protective gloves when handling a damaged battery. To replace the main battery, use an identical battery which you can purchase from the accessory information shipped with your system or at toshibaaccessories.com. Mobile Computing 87 Running the computer on battery power Maximizing battery life A high-capacity battery pack can be recharged many times. Over time it will gradually lose its ability to hold a charge. To maximize the life of your battery: . Avoid leaving the computer plugged in and unused for more than a few hours. Overcharging the battery may shorten its life. . If you are not going to use the computer for a long period of time, remove the battery. . Alternate between batteries if you have a spare. . Make sure your computer is turned off or in Hibernation mode when you are replacing a battery. . Store spare batteries in a cool dry place out of direct sunlight. NOTE: For optimum DVD performance, Toshiba recommends that you play DVDs while running on AC power rather than on battery power. Power management Your computer ships with the power management options preset to a configuration that will provide the most stable operating environment and optimum system performance for both AC power and battery modes. CAUTION: Changes to these settings may result in system performance or stability issues. Users who are not completely familiar with the power management component of the system should use the preset configuration. For assistance with setup changes, contact Toshiba’s InTouch Center. 88 88 Mobile Computing Charging the battery Charging the battery NOTE: Battery charge time may vary depending on the applications, power management settings, and features used. The battery needs to be charged before you can use it to power the computer. To charge the battery, plug the computer into a live wall outlet. It takes several hours to charge the battery with the computer off. It takes much longer to charge the battery while the computer is on. TECHNICAL NOTE: The battery does not charge while the computer is consuming full power. The battery may not start charging immediately if: . The battery is extremely hot or cold. To ensure that the battery charges to its full capacity, wait until it reaches room temperature (50 to 80 degrees Fahrenheit, 10 to 26 degrees Celsius). . The battery is almost completely discharged. Leave the power connected, and the battery should begin charging after a few minutes. HINT: Once the battery is fully charged...

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