Sony PCG-FRV31 Manual

Fn+F3 

Toggles the built-in speakers off and on. 

Fn+F4  Adjusts the built-in speaker volume. 

To increase volume, press the Fn+F4 keys, plus the Up Arrow key 

or the Right Arrow 

key. 

To decrease volume, press the Fn+F4 keys, plus the Down Arrow 

key or the Left Arrow 

key. 

Fn+F5  Adjusts the brightness of the computer screen (LCD). 

To increase the brightness, press the Fn+F5 keys, plus the Up Arrow 

key or the Right Arrow 

key. 

To decrease the brightness, press the Fn+F5 keys, plus the Down Arrow 

key or the Left Arrow 

key. 

Fn+F7  Toggles the display between the computer screen (LCD), a connected TV, and a connected external display, such as
a monitor or projector. 

Select one display at a time when playing a DVD. Connect the cable before you turn on the computer; otherwise, Fn+F7 will
not work. You cannot use the Fn+F7 function to switch between the LCD and TV once a DVD is inserted into the optical
drive. 

Fn+F12 

Puts the system into Hibernate mode, a power management state. To return the system to normal

operating mode, press the power button. Hibernate mode consumes the lowest level of power.