Sony PCG-F420 - Manual (Page 62)

VAIO ® Notebook User Guide #
To select a display
When you connect an external display to the monitor connector, you can
toggle the output between the Liquid Crystal Display (LCD), the external
monitor, or both devices.
Use the Fn+F7 keys to select a display. See also “Selecting the Display
Mode” in the online document Customizing Your VAIO
®
Notebook for more
information.
To Press Result
Switch to an
external
display Fn+F7 Toggles between the LCD, the external display
connected to the Monitor connector, or both
the LCD and external display.
Only LCD LCD and external display
Only external display