Sony pcg-fx905p User Manual

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The built-in speakers may be turned off. Press <Fn>+<F3> to turn on the speakers.

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The speaker volume may be turned to the minimum. Press <Fn> and then press <F4> repeatedly to 
increase the volume.

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If your computer is powered by battery, check that the battery is inserted properly and that it is 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 Windows

®

.

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If you use 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 batteries power the speakers, 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 connector, disconnect the cable.

Check that the external microphone (optional) is plugged into the microphone connector.