Sony VPCSE23FX - Manual (Page 43)

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Using Your VAIO Computer >
Using the Keyboard
Changing the Backlit Keyboard Settings
If your computer is equipped with a backlit keyboard, you can set the keyboard light to automatically turn on and off according
to ambient light intensity.
Additionally, you can set a time period to turn off the keyboard backlight after inactivity of keyboard operations.
To change the backlit keyboard settings
1 Click Start, All Programs, and VAIO Control Center.
2 Click Keyboard and Mouse and Backlit Keyboard.
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Ambient light intensity is measured by the ambient light sensor. Blocking the ambient light sensor may turn on the keyboard backlight.