User manual TOSHIBA SATELLITE A20-S259

[. . . ] Satellite A20/A25 Series User's Guide If you need assistance: ® Toshiba Global Support Centre Calling within the United States (800) 457-7777 Calling from outside the United States (949) 859-4273 For more information, see "If Something Goes Wrong" on page 208 in this guide. Handling the cord on this product will expose you to lead, a chemical known to the State of California to cause birth defects or other reproductive harm. Wash hands after handling. C6651-0803M2 2 Model: Satellite A20/A25 Series ReWritable CD/DVD Drives The computer system you purchased may include a ReWritable CD and/or DVD drive(s), among the most advanced data storage technologies available. As with any new technology, you must read and follow all set-up and usage instructions in the applicable user guides and/or manuals enclosed. [. . . ] When the on/off light flashes amber, it indicates that the system is suspended (using Windows® XP Standby command). Charging the RTC battery The computer contains an internal battery that provides power for the real-time clock (RTC) and calendar. During normal use, the main battery keeps the RTC battery adequately charged. Occasionally, the RTC battery may lose its charge completely, especially if you have had the computer turned off for a long time. Mobile Computing Monitoring battery power 127 If the RTC battery is low, the real-time clock and calendar may display the incorrect time and date, or stop working. To recharge the RTC battery, plug in the computer and leave it turned on until the RTC battery is fully charged. The RTC battery does not charge while the computer is turned off even when AC power is attached. 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 128 Mobile Computing Monitoring battery power Determining remaining battery power 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 3 Click Start, then click Control Panel. The TOSHIBA Power Saver Properties window appears. You can also access the TOSHIBA Power Saver Properties window by using the TOSHIBA Console. See "TOSHIBA Console" on page 201. 4 5 Choose the Power Save Modes tab, then under the Running on Batteries section, click Details. 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. 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. The computer calculates the remaining battery charge based on your current rate of power use and other factors such as the age of the battery. Mobile Computing Monitoring battery power 129 Conserving battery power How long a fully charged battery lasts when you are using the computer depends on a number of factors, such as: How the computer is configured How much you use the display panel instead of an external monitor How much you use the hard disk and other drives Whether you use any optional devices to which the battery supplies power, such as a PC Card Where you are working--since operating time decreases at low temperatures Toshiba's power-saving options greatly increase the length of time you can use the computer before it becomes necessary to recharge the battery. Toshiba has combined these options into preset power usage modes. What to do when the battery runs low When the battery runs low you can: Plug the computer into an external power source and recharge the battery. Put the computer in Hibernate mode and replace the battery with a charged spare. Save your work and turn off the computer. If you do not manage to do any of these things before the battery completely runs out of power, the computer automatically enters Hibernate mode and turns itself off. Hibernate mode keeps track of where you were so, when you turn on the power again, you can continue where you left off. The computer stores the information on what you were doing until the battery runs out of power. [. . . ] Compare RAM. S SCSI -- SCSI is the acronym for Small Computer Systems Interface. A single SCSI PC Card enables you to connect several SCSI devices, such as a scanner or digital camera to your computer. select -- To highlight or otherwise specify text, data, or graphics with the intent to perform some operation on it. serial -- Processes that occur one at a time. [. . . ]