Lenovo IdeaPad U300s User Manual download pdf (Page 29)

Related service information

Power management

Note: Power management modes are not supported for APM operating system.

To reduce power consumption, the computer has three power management

modes: screen blank, sleep (standby), and hibernation.

Screen blank mode

If the time set on the “Turn off monitor” timer in the operating system expires,

the LCD backlight turns off.

To end screen blank mode and resume normal operation, press any key.

Sleep (standby) mode

When the computer enters sleep (standby) mode, the following events occur in

addition to what occurs in screen blank mode:

The LCD is powered off.•

The hard disk drive is powered off.•

The CPU stops.•

To enter sleep (standby) mode, Click and select Sleep from the Start menu.

In certain circumstances, the computer goes into sleep (standby) mode

automatically:

If a “suspend time” has been set on the timer, and the user does not do any •

operation with the keyboard, the hard disk, the parallel connector, or the

diskette drive within that time.

If the battery indicator is amber, indicating that the battery power is low. •

(Alternatively, if Hibernate when battery becomes low has been selected

in the “Power Management Properties” window, the computer goes into

hibernation mode.)

To cause the computer to return from sleep (standby) mode and resume the

operation, do one of the following:

Press the Fn key.•

Turn on the power switch.•

Also, in the following event, the computer automatically returns from sleep

(standby) mode and resumes the operation:

The time set on the resume timer elapses.•

Note: The computer does not accept any input immediately after it enters

sleep (standby) mode. Wait a few seconds before taking any action to reenter

operation mode.

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Lenovo IdeaPad U300s User Manual Page 29