If You Have A Problem With Integrated Speakers; If You Have A Problem With External Speakers - Dell Latitude C640 User Manual

Fill out the Diagnostics Checklist

If you have a problem with integrated speakers

Adjust the Windows volume control -
corner of your screen. Ensure that the volume is turned up and that the sound is not muted.
Adjust the volume, bass, or treble controls to eliminate distortion.
Adjust the volume using keyboard shortcuts -
Press to disable (mute) or reenable the integrated speakers.
Reinstall the sound (audio) driver -

If you have a problem with external speakers

NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have
been listening to MP3 songs, make sure that you did not turn the player volume down or off.
Check the speaker cable connections -
Test the electrical outlet -
another device, such as a lamp.
Ensure that the speakers are turned on -
speakers.
Adjust the Windows volume control -
corner of your screen. Ensure that the volume is turned up and that the sound is not muted.
Adjust the volume, bass, or treble controls to eliminate distortion.
Test the speakers - Plug the speaker audio cable into the line-out connector on the
computer. Ensure that the headphone volume control is turned up. Play a music CD.
Run the speaker self-test -
See the speaker documentation for self-test instructions.
Eliminate possible interference -
to check for interference.
Reinstall the sound (audio) driver -
as you complete these checks.
Double-click the speaker icon in the lower-right
See
See "Reinstalling
See the setup diagram supplied with the speakers.
Ensure that the electrical outlet is working by testing it with
See the setup diagram supplied with the
Double-click the speaker icon in the lower-right
Some speaker systems have a self-test button on the subwoofer.
Turn off nearby fans, fluorescent lights, or halogen lamps
See "Reinstalling
"Using the Keyboard and Touch
Software."
Software."
Pad."