49Using the Notebook PC 4Power State SummarySTATE ENTRY EVENT EXIT EVENT“Stand by” • “Stand by” through Windows Start button, • Any device• Timer as set though “Power Management” • Battery lowin Windows Control Panel (higher priority)STR (“Stand by”) • Hotkey [Fn][F1] • Signal from modem port(Suspend-to-RAM) -- • Power button • Any keySTD (“Hibernate”) • Hotkey [Fn][F1] • Power button(Suspend-to-Disk) -- • Battery Extremely LowSoft OFF • Power button (can be defined as STR or STD) • Power button• “Shut down” through Windows Start buttonThermal Power ControlThere are three power control methods for controlling the Notebook PC’s thermal state. These powercontrol cannot be configured by the user and should be known in case the Notebook PC should enterthese 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.