Sony VPCS12A7E, Руководство пользователя

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Troubleshooting >
Speakers
What should I do if my external speakers do not work?
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Check the suggestions in What should I do if I do not hear sound from the built-in speakers? (page 184) .
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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.
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Make sure your speakers are properly connected and the volume is turned up loud enough to hear sound.
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Make sure your speakers are designed for computer use.
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If your speakers have a muting button, set the button to off.
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If your speakers require external power, make sure the speakers are connected to a power source. See the manual that
came with your speakers for more information.
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Check the Windows volume controls by clicking the volume icon on the taskbar.
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Your sound output device may have been incorrectly configured. To change the sound output device, see How do I
change the sound output device? (page 189) .