Apple Duo 270C manual Using the Custom options, More about automatic sleep and screen dimming

More about automatic sleep and screen dimming

The Battery Conservation slider controls three different power conservation features: system sleep, hard disk sleep and screen dimming.

nSystem sleep is a state in which your computer uses only the power it needs to maintain the contents of RAM. (The contents of RAM include any open programs and documents, and various control panel settings.) If system sleep is in effect, so is hard disk sleep.

nHard disk sleep stops your computer’s internal hard disk from spinning when it isn’t being used.

nScreen dimming automatically dims the backlight in your PowerBook’s screen to conserve power (the screen’s backlight is the single biggest consumer of your computer’s battery power).

The table indicates how the battery conservation settings correspond to sleep/backlight dimming times.

Minutes before sleep/backlight dimming if you choose:

	Conservation				Performance
	1	2	3	4	5
System	2	3	6	8	15
Hard disk	1	2	3	6	8
Backlight Dimming	1	2	3	4	5

Using the Custom options

The PowerBook control panel includes a switch labeled Easy/Custom. Slide the switch to Custom for more options that affect your computer’s power consumption.

Slide this switch to Custom view.

Custom view adds these conservation options.

Chapter 6: Power Management 101