The fn key in combination with other keys – Sony PCG-SR27 User Manual
Page 12
VAIO® Notebook User Guide
12
The Fn Key in Combination with Other Keys
Combinations/
Feature
Functions
Fn+
(ESC)
Standby
Puts the system in Standby mode, which is a power 
management state. To return the system to the active 
state, press any key or press the power switch on your 
notebook.
Fn+
(F3)
Mute on/off
Toggles the built-in speaker off and on.
Fn+
(F4)
Speaker volume
Adjusts the built-in speaker volume as follows: 
To increase volume, press Fn+F4, then 
or
.
To decrease volume, press Fn+F4, then
or
.
Fn+
(F5)
Brightness control
Adjusts the brightness of the LCD. 
To increase light intensity, press Fn+F5 then 
or
.
To decrease light intensity, press Fn+F5 then or
.
Fn+
/
(F7)
Switch to the 
external display
Toggles through the LCD, external display, and both 
LCD and external display.
Fn+
(F12)
Hibernate
Puts the system in Hibernate mode, which is the 
lowest level of power consumption. When you 
execute this command, the states of the system and 
the peripheral devices are written to the hard disk and 
the system power is turned off. To turn the power 
back on and return the system to the original state, 
press the power switch on your notebook. 
Fn+B
Mega-Bass switch
Toggles the mega-bass function off and on. This 
feature is available with headphone only.
✍
You can also carry out these functions using the Jog Dial control. Some functions are 
not available until Windows launches.
➜
➜
➜
➜
➜
➜
➜
➜
Only LCD
LCD and external display
Only external display