Fujitsu Lifebook I4177, User Manual

Page: 42 / 98

34
L i f e B o o k i S e r i e s – S e c t i o n T h r e e
Power Management
Your Fujitsu LifeBook 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 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 LifeBook 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.
SUSPEND/RESUME/POWER ON BUTTON
When your LifeBook is active, the Suspend/Resume/
Power On button can be used to manually put your Life-
Book into Suspend mode. Push the Suspend/Resume/
Power On button when your LifeBook 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 LifeBook is suspended, pushing the Suspend/
Resume/Power On button will return your LifeBook to
active operation. You can tell whether or not your
system is in Suspend mode by looking at the Power indi-
cator.
(See Status Indicator Panel on page 15 for more
information) If the indicator is visible and not flashing,
your LifeBook is fully operational. If the indicator is
both visible and flashing, your LifeBook is in Suspend
mode. If the indicator is not visible at all, the power is off
or your LifeBook is in Hibernation (Save-to-Disk)
mode.
(See Hibernation Mode)
SUSPEND MODE
Suspend or Standby mode in Windows 98 Second
Edition saves the contents of your LifeBook’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 LifeBook can be
put in Suspend mode by:
■
Pressing the Suspend/Resume /Power On 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’s system memory typically stores the
file(s) on which you are working, open application(s)
information, and any other data required to support the
operation(s) in progress. When you resume operation
from Suspend mode, your LifeBook will return to the
point where it left off. You must use the Suspend/
Resume/Power On button to resume operation, and
there must be an adequate power source available, or
your LifeBook will not resume.
HIBERNATION (SAVE-TO-DISK) FEATURE
The Hibernation (Save-to-Disk) feature saves the
contents of your LifeBook’s system memory to the hard
drive as a part of the Suspend/Resume mode. You can
enable or disable this feature.
Enable or Disable the Hibernation Feature
The default settings are not enabled. To enable or disable
the Hibernation feature, follow these steps:
1. From the Start menu, select Settings , and then select
Control Panel .
2. From the Control Panel , select Power Options .
3. Select the Hibernation tab. Select the box to enable
or disable this feature.
Using the Hibernation Feature
1. From the Start menu, select Settings, then select
Control Panel .
2. From the Control Panel , select Power Options .
3. Select the Advanced tab. Select Hibernate from the
pull down menu for Power buttons.
C A U T I O N
If you are running your LifeBook on battery power,
be aware that the battery continues to discharge while
your LifeBook is in Suspend mode, though not as fast as
when fully operational.
P O I N T
Disabling the Suspend/Resume/Power On button pre-
vents it from being used to put your LifeBook in Sus-
pend or Hibernation (Save-to-Disk) mode. The resume
function of the button cannot be disabled.