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3 Configure the Alarm settings to suit your needs. Conserving battery power How long a fully charged battery pack 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 hard disk, optical drive, diskette drives, or other optional devices . Where you are working, since operating time decreases at low temperatures There are various ways in which you can conserve power and extend the operating time of your battery: . Enable Standby or Hibernation, which saves power when you turn off the computer and turn it back on again . Use Toshiba’s power-saving options Mobile Computing 107 Monitoring main battery power These power-saving options control the way in which the computer is configured. By using them, you can greatly increase the length of time you can use the computer before you need to recharge the battery. Toshiba has combined these options into preset Power Profiles. Using one of these profiles lets you choose between maximum power savings and peak system performance. You may also set individual power-saving options to suit your own needs. The following sections describe how to choose a Power Profile and discuss each power-saving option. Power Profiles You can choose a predefined Power Profile or select your own combination of power management options. To do this: 1 Click Start, Control Panel, Performance and Maintenance, and then Toshiba Power Saver. The Toshiba Power Saver Properties window appears. Sample Toshiba Power Saver Properties window Mobile Computing 108 Monitoring main battery power 2 Select an appropriate profile for your work environment or create your own custom profile. By changing the options that appear in the Power Saver Properties dialog box and clicking OK, you can reconfigure that function. You may choose a power-saving management strategy to best suit your computing needs. If you are running on batteries and the programs that you are using do not require a lot of system resources, you may experience longer work sessions by enabling the Normal setting. Any options that you change become the active settings when you exit the program. (You do not have to restart your system before they become active settings.) For more information, see “Toshiba Power Saver” on page 154. Using a hot key to set the Power Profile You may use a hot key to set the Power Profile. To set the Power Profile: 1 Press Fn and F2 simultaneously to display the Power Profile pop-up window. Sample Power Profile mode pop-up window 2 While continuing to press Fn, press F2 until you select the desired Power Profile. The Power Profile options are: Full Power, AC Optimized, High Power, Normal, DVD Playback, Presentation, and Long Life. Mobile Computing 109 Changing the main battery 3 Release the Fn key. The pop-up window disappears. You are now in the selected mode. For more information on setting the battery Power Profile, see “Toshiba Power Saver” on page 154. Changing the main battery Always use the battery pack supplied as an accessory or an equivalent battery pack specified in the User's Manual. Other battery packs have different voltage and terminal polarities. Use of nonconforming battery packs could generate smoke or cause fire or rupture; possibly resulting in serious injury. Never short circuit the battery pack by either accidentally or intentionally bringing the battery terminals in contact with another conductive object. This could cause serious injury or fire, and could also damage the battery pack. Never expose a battery pack to abnormal shock, vibration or pressure. The battery pack's internal protective device could fail, causing it to overheat or ignite, resulting in caustic liquid leakage, or explosion or fire, possibly resulting in death or serious injury. Using a battery pack other than one supplied or specified by Toshiba (part number: PABAS071) for this PC would interfere with the computer's display when open and could damage the LCD display panel. Mobile Computing 110 Changing the main battery When your main battery has run out of power, you have two options: plug in the AC adapter or install a fresh main battery. TECHNICAL NOTE: To avoid losing any data, save your files and then either completely shut down your computer or put it into Hibernation mode before changing the main battery. Removing the battery from the computer To remove the battery: 1 Save your work. 2 Power off the computer or place it in Hibernation mode according to the instructions in “Using and configuring Hibernation mode” on page 68. 3 Unplug and remove any cables connected to the computer, including the AC adapter. 4 Close the display panel and turn the computer upside down. 5 Slide the battery release lock to the unlocked position. Sample unlocking the battery release lock Mobile Computing 111 Changing the main battery 6 Slide the battery release latch to release the battery. 7 Pull the discharged battery out of the computer. Sample removing the batt...

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