4 Using the Notebook PC

Power Savings

In addition to reducing the CPU clock, this mode puts devices including the LCD backlight in their lower active state. The Notebook PC enters “Stand by” mode (low priority) when the system remains idle for a specified amount of time. The timeout can be set through BIOS setup (lower priority) and Windows power management (higher priority). To resume system operation, press any key.

Power State Summary

STATE

ENTRY EVENT

EXIT EVENT

“Stand by”

• “Stand by” through Windows Start button,

• Any device

 

• Timer as set though “Power Management”

• Battery low

 

in Windows Control Panel (higher priority)

 

 

STR (“Stand by”)

• Ring indicator

•

Hotkey [Fn][F1]

(Suspend-to-RAM)

• Power button

 

 

STD (“Hibernate”)

• Power button

•

Hotkey [Fn][F1]

(Suspend-to-Disk)

• Battery Extremely Low

 

 

Soft OFF

• Power button (can be defined as STR or STD)

• Power button

 

• “Shut down” through Windows Start button

 

 

Thermal Power Control

There are three power control methods for controlling the Notebook PC’s thermal state. These power control cannot be configured by the user and should be known in case the Notebook PC should enter these states. The following temperatures represent the chassis temperature (not CPU).

•The fan turns ON for active cooling when the temperature reaches the safe upper limit.

•The CPU decreases speed for passive cooling when the temperature exceeds the safe upper limit.

•The system shut down for critical cooling when temperature exceeds the maximum safe upper limit.

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