Lenovo U260 manual Power management, Screen blank mode, Sleep standby mode

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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. You can also turn off the LCD backlight by pressing Fn+F2.

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, press Fn+F1.

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.

•• Open the lid.

•• 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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Contents IdeaPad U260 First Edition Aug Copyright Lenovo 2010. All rights reserved Contents About this manual Safety information General safety Electrical safety IdeaPad U260 Hardware Maintenance Manual Safety inspection guide Grounding requirements Safety notice Safety notices multilingual translationsIdeaPad U260 Hardware Maintenance Manual Safety information IdeaPad U260 Hardware Maintenance Manual Safety information IdeaPad U260 Hardware Maintenance Manual Safety information Laser compliance statement Safety information Strategy for replacing FRUs Important service informationImportant notice for replacing a system board Strategy for replacing a hard disk driveImportant information about replacing RoHS compliant FRUs General checkout What to do first Following are not covered under warrantyChecking operational charging Power system checkoutChecking the AC adapter Checking the battery pack Restoring the factory contents by using OneKey Recovery Related service informationSupervisor password PasswordsPower-on password Sleep standby mode Power managementScreen blank mode Hibernation mode Specifications SpecificationsIdeaPad U260 Hardware Maintenance Manual Status indicators Status indicatorsFlashing white Fn key combinations Fn key combinationsScrew notices FRU replacement noticesRemoving and replacing an FRU Removal steps of keyboard KeyboardRemoval steps of keyboard bezel Keyboard bezelIdeaPad U260 Hardware Maintenance Manual M1.98 × 3 mm, flat-head, nylok-coated White ~1.5 kgfcm M1.98 × 3 mm, flat-head, nylok-coated White Removal steps of battery pack Battery packRemoval steps of PCI Express Mini Card for wireless LAN PCI Express Mini Card for wireless LANWhen installing Removal steps of LCD unit LCD unitRemove the LCD unit in the direction shown by arrows Removal steps of hard disk drive Hard disk driveRemoval steps of Dimm DimmRemoval steps of fan assembly and heat sink assembly Fan assembly and Heat Sink assemblyWhen installing Removal steps of speakers SpeakersImportant notices for handling the system board System boardRemoval steps of system board Removal steps of base cover Base coverIdeaPad U260 Hardware Maintenance Manual Removal steps of LCD front bezel LCD front bezelRemoval steps of LCD panel, LCD cable and hinges LCD panel, LCD cable and hingesM2 × 3 mm, flat-head, nylok-coated Black ~1.5 kgfcm Removal steps of integrated camera Integrated cameraRemoval steps of antenna assembly and LCD cover Antenna assembly and LCD coverFront view LocationsBottom and Left-side view Right-side viewParts list Overall No. FRU FRU no Parts list-OverallNIUM1 Logic LOWER-BROWN AM0DZ000310 LCD FRUs 12.5-in. HD TFT Parts list-12.5-in. HD TFTParts list-Keyboard Miscellaneous parts Parts list-Miscellaneous partsAC adapters Parts list-3-pin AC adaptersParts list-3-pin power cords Power cords145000538 Lenovo IdeaPad U260 IdeaPad U260 Hardware Maintenance Manual APS Trademarks
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