Fujitsu LifeBook S7110D Manuale d'uso - Pagina 41

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S7020.book Page 32 Friday, May 13, 2005 3:49 PM

L i f e B o o k S 7 0 0 0 N o t e b o o k

Power Management

Your Fujitsu LifeBook notebook has many options and

features for conserving battery power. Some of these

features are automatic and need no user intervention,

such as those for the internal modem. However, others

depend on the parameters you set to best suit your oper-

ating conditions, such as those for the display bright-

ness. Internal power management for your notebook

may be controlled from settings made in your operating

system, pre-bundled power management application, or

from settings made in BIOS setup utility.

Besides the options available for conserving battery

power, there are also some things that you can do to

prevent your battery from running down as quickly.

For example, you can create an appropriate power saving

profile, put your notebook into Suspend mode when it

is not performing an operation, and you can limit the

use of high power devices. As with all mobile, battery

powered computers, there is a trade-off between

performance and power savings.

POWER/SUSPEND/RESUME BUTTON

When your LifeBook notebook is active, the Power/

Suspend/Resume button can be used to manually put

your notebook into Suspend mode. Push the Power/

Suspend/Resume button when your notebook is active,

but not actively accessing anything, and immediately

release the button. You will hear two short beeps and

your system will enter Suspend mode. (See figure 2-4 on

page 6 for location)

If your LifeBook is suspended, pushing the Power/

Suspend/Resume button returns your notebook to active

operation. You can tell whether the system is Suspended

by looking at the Power indicator. (See figure 2-4 on

page 6) If the indicator is visible and not flashing, your

notebook is fully operational. If the indicator is visible

and flashing, your notebook is in Suspend mode. If the

indicator is not visible, the power is off or your notebook

is in Hibernation mode. (See Hibernation Feature)

SUSPEND MODE

Suspend or Standby mode in Windows saves the

contents of your LifeBook notebook's system memory

during periods of inactivity by maintaining power to

critical parts. This mode will turn off the CPU, the

display, the hard drive, and all of the other internal

components except those necessary to maintain system

memory and allow for restarting. Your notebook can be

put in Suspend mode by:

Pressing the Power/Suspend/Resume button when

■

your system is turned on.

Selecting Standby from the Windows Shut Down menu.

■

Timing out from lack of activity.

■

Allowing the battery to reach the Dead Battery

■

Warning condition.

Your notebook's system memory typically stores the file

on which you are working, open application informa-

tion, and any other data required to support operations

in progress. When you resume operation from Suspend

mode, your notebook will return to the point where it left

off. You must use the Power/Suspend/Resume button to

resume operation, and there must be an adequate power

source available, or your notebook will not resume.

■

If you are running your LifeBook note-

book on battery power, be aware that

the battery continues to discharge while

your notebook is in Suspend mode,

though not as fast as when fully opera-

tional.

■

Disabling the Power/Suspend/Resume

button prevents it from being used to

put your LifeBook notebook in Suspend

or Hibernation (Save-to-Disk) mode.

The resume function of the button can-

not be disabled.

■

The Suspend or Hibernation (Save-to-

Disk) mode should not be used with cer-

tain PC Cards. Check your PC Card doc-

umentation for more information. When

PC Cards or external devices are in use,

Hibernation (Save-to-Disk) mode cannot

return to the exact state prior to suspen-

sion, because all of the peripheral

devices will be re-initialized when the

system restarts.

If your LifeBook notebook is actively

■

accessing information when you enter

the Suspend or Hibernation (Save-to-

Disk) mode, changes to open files are

not lost. The files are left open and

memory is kept active during Suspend

mode or the memory is transferred to

the internal hard drive during Hiberna-

tion mode.

The main advantage of using the

Hibernation (Save-to-Disk) function is that

power is not required to maintain your

data. This is particularly important if you

will be leaving your LifeBook notebook in

a suspended state for a prolonged period

of time. The drawback of using

Hibernation mode is that it lengthens the

power down and power up sequences and

resets peripheral devices.