Fujitsu Lifebook E2010 User Manual Download

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L i f e B o o k E S e r i e s – S e c t i o n 3

Power Management

Your 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 operating condi-
tions, such as those for the display brightness. Internal
power management for your LifeBook notebook may be
controlled from settings made in your operating system
or from settings made in the 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 AND SUSPEND/RESUME BUTTON

When your LifeBook notebook is active, the Power and
Suspend/Resume button can be used to manually put
your notebook into Suspend mode. Push the Power and
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.

If your notebook is suspended, pushing the Power and
Suspend/Resume button will return your notebook to
active operation. You can tell whether or not your
system is in Suspend mode by looking at the Power indi-
cator. (See Figure 2-8 on page 14 for location) If the indi-
cator is visible and not flashing, your LifeBook notebook
is fully operational. If the indicator is both visible and
flashing, your notebook is in Suspend mode. If the indi-
cator is not visible at all, the power is off or your note-
book is in Save-to-Disk mode. (See Save-to-Disk Mode)

SUSPEND MODE

Suspend or Standby mode in Windows 2000 Profes-
sional saves the contents of your LifeBook notebook’s
system memory during periods of inactivity by main-
taining 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 LifeBook
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 LifeBook notebook’s system memory typically
stores the file(s) on which you are working, open appli-
cation(s) information, and any other data required to
support the operation(s) in progress. When you resume
operation from Suspend mode, your LifeBook notebook
will return to the point where it left off. You must use the
Power and Suspend/Resume button to resume opera-
tion, and there must be an adequate power source avail-
able, or your LifeBook notebook will not resume.

P O I N T S

■

If you are running your LifeBook notebook on battery
power, be aware that the battery continues to dis-
charge while your LifeBook notebook is in Suspend
mode, though not as fast as when fully operational.

■

Disabling the Suspend/Resume button prevents it
from being used to put your LifeBook notebook in
Suspend or Save-to-Disk mode. The resume function
of the button cannot be disabled.

■

The Suspend or Hibernation (Save-to-Disk) mode
should not be used with certain PC Cards. Check your
PC Card documentation 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 suspension because all of the
peripheral devices will be re-initialized when the
system re-starts.

■

If your LifeBook notebook is actively accessing infor-
mation 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 Hibernation 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 sus-
pended state for a prolonged period of time. The
drawback of using Hibernation mode is that it length-
ens the power down and power up sequences and
resets peripheral devices.

■

Your system is set to use the Max Battery power
scheme when running on battery power. If you
change the power scheme to a different profile, your
battery life may vary.

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