Dell LM P-133ST manual System Power, Power Conservation

System Power

The power button controls power to the system. The computer receives power from either the AC adapter connected to an AC power source or from up to two batteries. If you use the AC adapter, constant power is available to the computer. If you use one or two batteries, the system has built-in power management fea- tures that extend battery life by removing power from parts of the computer that are not being used.

Power Conservation

Attach the AC power adapter to the computer, whenever possible, to conserve battery power. When the AC adapter is attached, the battery is charged while the computer uses AC power.

The Power Menu of the Setup program has power conservation features. When activated, each power conservation feature turns off or slows down one or more functions while the computer is idle. The power conservation features are as follows:

•	Standby mode — To activate this feature, select the	STANDBY TIME-OUT
	option in the Power Menu of the Setup program. To deactivate the feature, move
	the cursor or press any key on the built-in or external keyboard.
•	Suspend mode — To activate this feature, press <	FN><ESC> or set the
	SUSPEND TIME-OUToption in the Power Menu of the Setup program. When sus-
	pend mode is activated, the computer beeps once and the suspend mode indicator in
	the status display panel blinks every 4 seconds. To deactivate this feature, press any
	key on the built-in keyboard.
	NOTE: To conserve power when the computer is not in use, close the dis-
	play. If the display is closed and an external monitor is not connected, the
	computer beeps one time and goes into suspend mode. If the computer receives a
	modem call from an external modem while the display is closed, the computer
	answers the call unless it is in suspend-to-disk mode. To resume work, open the
	display.
•	Suspend-to-disk mode — To activate this feature, press <		FN><A> or set the
	SUSPEND TO DISK TIME-OUToption in the Power Menu of the Setup program. To
	resume using the computer, press the power button on the built-in keyboard.
•	Dimming the display — To activate this feature, set the		DIM MODE TIME-OUT
	option in the Power Menu of the Setup program. To increase the brightness of the dis-
	play, press any key on the built-in keyboard.
•	Turning off the hard-disk drive — To activate this feature, set the HARD-DISK
	TIME-OUToption in the Power Menu of the Setup program. The computer automati-

cally turns the hard-disk drive back on the next time the microprocessor accesses the drive.

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