Sony PCG-FX290K - Manual (Page 74)

VAIO Notebook User Guide
74
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.
✍
Connect the cable before you turn on the computer, otherwise Fn + 7 will not work.
Only LCD LCD and external display
Only external display