Sony VGNSZ640N02 Laptop User Manual


 
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Troubleshooting
What should I do if I do not hear sound from the built-in speakers?
If you are using a program that has its own volume control, make sure the volume control is properly set. See the
program's help file for more information.
Make sure the speaker volume is turned up loud enough and the audio option is enabled.
The volume may have been turned off by the Fn+F2 keys. Press them once again.
The volume may have been minimized by the Fn+F3 keys. Press the Fn+F4 keys to turn up the volume loud enough to
hear sound.
Check the Windows volume controls by clicking the volume icon on the taskbar.
If Audio/Modem is disabled on VAIO Power Management power scheme settings, enable the option. See Activating
VAIO Power Management Power Schemes (page 139) for the procedure.