Sony PCG-FXA36 Manual

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If the built-in speakers are turned off, press the key combination Fn+F3 to 
turn on the speakers. If the speaker volume is turned to the minimum, press 
Fn+F4.

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If your notebook is powered by batteries, check that the battery packs are 
inserted properly and that they are charged.

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If you are using an application that has its own volume control, check that 
the volume is turned up.

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Check the volume controls in the Windows® taskbar.

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If you connect external speakers, check that the speakers are properly 
connected and the volume is turned up. If the speakers have a mute button, 
make sure it is off. If the speakers are powered by batteries, check that the 
batteries are inserted properly and that they are charged.

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If you have connected an audio cable to the Headphone jack, disconnect the 
cable.

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If you are still experiencing problems, use the supplied Driver Recovery CD 
to reinstall the drivers. See “To use the Driver Recovery CD(s)” for more 
information.

If you are using an external microphone, check that the microphone is plugged 
into the Microphone jack. See “Connecting an External Microphone” for more 
information.