Sony PCG-GRX550 VAIO User Guide - Page 17
Combinations and functions with the Fn key, Combinations, Feature, Function
UPC - 027242604711
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Using the Keyboard Combinations and functions with the Fn key ✍ If you switch user identities during a computing session, the Fn+F7 and Fn+F8 key functionality (if available on your computer) will be interrupted. To switch to an external display or monitor, see "Selecting the Display Mode" for more information. Combinations/ Feature Function Fn+ (F3) Mute On/Off Toggles the built-in speaker off and on. Fn+ (F4) Speaker volume Adjusts the built-in speaker volume. To increase volume, press Fn+F4, then To decrease volume, press Fn+F4, then or . or . Fn+ (F5) Adjusts the brightness of the LCD. Brightness control To increase light intensity, press Fn+F5 and then or . To decrease light intensity, press Fn+F5 and then or . Fn+ / (F7) Switch to the external monitor/LCD Toggles through the LCD, external display (connected to the Monitor connector) and both LCD and external display. Only LCD LCD and external display Only external display Connect the cable before you turn on the notebook, otherwise Fn + F7 will not work. 17