Fujitsu LIFEBOOK T Series, Руководство пользователя

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U s i n g Yo u r Ta bl e t P C
29
Power Management
Your LifeBook T Series Tablet PC 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
conditions, such as those for the display
brightness. Internal power management for your
Tablet PC may be controlled from settings made
in your operating system, pre-bundled power
management application, or from settings made
in BIOS setup utility.
Table 3-1. System Power States
Power Mode
Fully On Mode
Standby Mode
(Suspend-to-RAM)
Hibernation Mode
(Suspend-to-Disk)
Power Off
System Activity
System is running. CPU, system
bus, and all other interfaces
operate at full speed.
Resume system logic remains
powered and RAM remains
powered to maintain active data.
All other devices are turned off.
Windows saves desktop state
(including open files and
documents) to hard disk. CPU
stops. All other devices are
turned off.
System is fully powered off
except for logic components
required for Suspend/Resume
button and real-time clock
operation.
Events causing system to enter mode state
• 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.
• Standby timeout occurs.
• Suspend request issued by software or by pressing
the Suspend/Resume button.
• Low battery.
• Suspend timeout occurs.
• Clicking Start -> Shut Down -> Hibernate (It may be
necessary to Enable Hibernate Support from
Windows Power Options.)
• Low battery condition.
• System shutdown.
• Low battery condition.
Besides the options available for conserving
battery power, there are also some things that
you can do to prevent your Tablet PC battery from
running down as quickly. For example, you can
create an appropriate power saving profile, put
your Tablet PC 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.
Suspend/Resume Button
When your Tablet PC is active, the Suspend/
Resume button can be used to manually put your
Tablet PC into Standby mode. Push the Suspend/
Resume button when your Tablet PC 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.
If your Tablet PC is suspended, pushing the
Suspend/Resume button will return your Tablet
PC to active operation. You can tell whether or
not your system is in Standby mode by looking
at the Power indicator. If the indicator is visible
and not flashing, your Tablet PC is fully
operational. If the indicator is both visible and
flashing, your Tablet PC is in Standby mode. If
the indicator is not visible at all, the power is off
or your Tablet PC is in Hibernate mode
(See
Hibernate Mode)
LB_Soriel 05 (25_32) 26/11/04, 3:33 PM 29