Sony PCG-GRX550 VAIO User Guide - Page 143
Troubleshooting Audio, My speakers make no sound. - power button panel
UPC - 027242604711
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Troubleshooting Audio Troubleshooting Audio My speakers make no sound. ❑ If the built-in speakers are turned off, press the Fn+F3 keys simultaneously to turn on the speakers. You can also turn on the speakers using the center Jog Dial™ control. ❑ If the speaker volume is turned to the minimum, press the Fn+F4 keys simultaneously, and then press or to increase the volume or you can use the center Jog Dial™ control to adjust the volume. ❑ If nothing is displayed when you press the Fn+F3 or Fn+F4 keys simultaneously, then do the following: 1 Click Start on the Windows® taskbar, then Control Panel, and then Sounds, Speech, and Audio Devices. 2 Click Sounds and Audio Devices. The Sounds and Audio Devices Properties dialog box appears. 3 Make sure the Volume tab is open and the Mute check box is not selected. ❑ If your notebook is powered by batteries, check that the battery packs are inserted properly and that they are charged. ❑ If you are using an application that has its own volume control, check that the volume is turned up. ❑ Check the volume controls in the Windows® taskbar. ❑ 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. ❑ If you have connected an audio cable to the Headphone jack, disconnect the cable. ❑ 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. 143