Dell Inspiron 3800 User Manual download pdf (Page 39)

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Power Conservation: Dell™Inspiron™3800SystemReference

Experimenting With Power Conservation

In general, the lower the value you set for each power conservation feature, the longer the battery's charge lasts. On the other hand, setting high

values tends to optimize the computer's performance.

To evaluate the way that different settings affect how long you can operate the computer on battery power versus the relative efficiency of how the

software performs, experiment as follows:

l Use the computer with all the options set at their default values.

l Use the computer with all the options disabled or set to Off.

l Use the computer with all the options set to their minimum or maximum values.

Using Key Combinations

Table 1 identifies the power management key combinations.

Table 1. Key Combinations to Activate/Deactivate Features

* These key combinations may not function with the ACPI if the settings have not been activated with the Power Management Properties

window in the Control Panel.

Experimenting With Power Conservation

Standby Mode

Using Key Combinations

Power Management Properties for Microsoft Windows 98 and

Windows 2000

Closing the Display

Power Management Properties for Microsoft Windows NT

Suspend Mode

Save-to-Disk Suspend Mode

NOTE: For Advanced Configuration and Power Interface (ACPI)-compliant systems, power management settings are

controlled from the Power Management Properties window in the Control Panel. In other systems, power management

settings are controlled from the System Setup program.

NOTE: To use key combinations on an external keyboard, enable the External Hot Key option in the System Setup

program, and press <Scroll Lock> instead of <Fn>.

Feature

Activate/Deactivate

Turn off display

To activate, press <Fn><d>.*

To deactivate, move the cursor or press a key on the integrated or external keyboard. (If nothing

happens, the computer may be in standby mode. Press the power button to resume normal

operation.)

Turn off hard-disk drive

To activate, press <Fn><h>.*

Automatically deactivates when the hard-disk drive is accessed.

NOTE: If a modular hard-disk drive is installed in the media bay, you cannot turn off the hard-

disk drive by pressing <Fn><h>.

Standbymode

Sleep mode (ACPI-compliant systems)

Standby mode (Microsoft®Windows®98

systems)

To activate, press <Fn><Esc>.

To deactivate, press the power button.

Save-to-disk suspend mode

To activate, press <Fn><a>. (On a French keyboard, press <Fn><q>.)*

To deactivate, press the power button.

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