Sony VAIO PCG-TR1MP User Manual page 29

Using your notebook
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3 If necessary, press <Fn>+<F5> to adjust the brightness controls for the LCD display. To increase the
brightness, use the up or right arrow keys. To decrease, use the down or left arrow keys.
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<Fn>+<F5> is only possible if Windows is running.
If you press the power button for more than four seconds, the computer will turn off.
!
Do not grasp he camera lens when opening the cover, you may break the camera.