Sony PCG-748 - Manual (Page 42)

Using Your Notebook Computer
Using Power Saving Modes
When you use a battery as the source of power for your computer, you
can take advantage of power management settings to conserve battery
life. In addition to the normal operating mode, which allows you to turn
off specific devices, your computer has two distinct power saving modes:
System Suspend and System Hibernation. When using battery power,
you should be aware that the computer automatically enters System
Hibernation mode when the remaining battery charge drops to a very
low level, regardless of the power management setting you select.
Normal Mode
This is the normal state of your computer when it is in use. The green
power indicator light is on in this mode. To save power, you can turn off
a specific device such as the LCD or the hard disk.
For details, see "Controlling Power Management" on page 65.
System Suspend Mode
The computer saves the current state of the system in RAM and switches
off power to the CPU. The amber power indicator light flashes in this
mode.
To activate System Suspend mode
Press Fn+Esc, or slide the power switch forward and hold it for at least
four seconds. You can also use the PowerPanel utility to enter System
Suspend mode.
To return to normal mode
Press any key.
System Hibernation Mode
The state of the system is saved on the hard drive and power is turned
off. The power indicator light is off in this mode.
To activate System Hibernation mode ■ '
Press Fn+F12. You can also use the PowerPanel utility to enter System
Hibernation mode.