L550/L550D/L555/L555D

On battery *This feature lets you configure the computer in

 

order to save battery power. This can be

 

specified in the Power Options.

 

 

Critical battery

When battery power is exhausted to the point that

action *computer operation cannot be continued, the

 

system automatically enters Hibernation Mode

 

and shuts itself down. This can be specified in the

 

Power Options.

 

 

Processor power

To protect against overheating, the processor has

management *an internal temperature sensor so that, if the

 

computer’s internal temperature rises to a certain

 

level, the cooling fan is turned on or the

 

processing speed is lowered. This can be

 

specified in the Power Options.

 

 

If the processor’s temperature reaches an unacceptably high level with either setting, the computer will automatically shut down to prevent any damage - in this instance any unsaved data in memory will be lost.

Hibernation ModeThis feature lets you turn off the power to the

 

computer without exiting from your software.

 

The contents of main memory are automatically

 

saved to the hard disk drive so that when you

 

next turn the power on again, you can continue

 

working right where you left off. Refer to the

 

Turning off the power section in Chapter 3,

 

Getting Started, for more details.

 

 

Sleep ModeIf you have to interrupt your work, you can use

 

this feature to allow you to turn off power to the

 

computer without exiting from your software.

 

Data is maintained in the computer’s main

 

memory so that when you next turn on the power,

 

you can continue working right where you left off.

 

 

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User’s Manual