Fujitsu B6220 User Manual download pdf (Page 42)

LifeBook B6200 Series – Section Three

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 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 notebook battery from running down as

quickly. For example, you can create an appropriate

power saving profile, put your notebook into Standby

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.

Table 3-1. System Power States

SUSPEND/RESUME BUTTON

When your LifeBook notebook is active, the Suspend/

Resume button can be used to manually put your Life-

Book into Standby mode. Push the 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

Standby mode. (See figure 2-5 on page 8 for location).

If your notebook is suspended, pushing the Suspend/

Resume button will return your notebook to active oper-

ation. You can tell whether or not your system is in

Standby mode by looking at the Power indicator. See

“Power Indicator” on page 13. If the indicator is visible

and not flashing, your notebook is fully operational. If

the indicator is both visible and flashing, your notebook

is in Standby mode. If the indicator is not visible at all,

the power is off or your notebook is in Hibernate mode.

STANDBY (SLEEP) MODE

Standby (Sleep mode in Vista) mode in Windows saves

the contents of your 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

Standby mode by:

■

Pressing the Suspend/Resume button when your

system is turned on.

■

Selecting Standby from 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(s) on which you are working, open application(s)

information, and any other data required to support the

Power Mode System Activity Events causing system to enter mode state

Fully On Mode System is running. CPU, system bus,

and all other interfaces operate at full

speed.

■

From Standby mode: System operation resumed

(Suspend/Resume button pressed, resume on

modem ring, resume on time).

■

From Hibernation mode: Suspend/Resume button

pressed.

■

From Off mode: Suspend/Resume button pressed.

In Windows XP:

Standby Mode or

Suspend-to-RAM

In Windows Vista:

Sleep Mode

Resume system logic remains powered

and RAM remains powered to maintain

active data. All other devices are turned

off.

■

Standby timeout occurs.

■

Suspend request issued by software or by pressing

the Suspend/Resume button.

■

Low battery.

Hibernation Mode

or Suspend-to-Disk

Windows saves desktop state (including

open files and documents) to hard disk.

CPU stops. All other devices are turned

off.

■

Suspend timeout occurs.

■

Clicking Start -> Shut Down -> Hibernate

(It may be necessary to Enable Hibernate Support

from Windows Power Options.)

■

Low battery condition

Power Off System is fully powered off except for

logic components required for Suspend/

Resume button and real-time clock

operation.

■

System shutdown.

■

Low battery condition

B Series.book Page 34 Thursday, May 17, 2007 2:25 PM

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Fujitsu B6220 User Manual Page 42

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