Dell E198WFP User Manual page 29

No Sound Soundbar has power -
power indicator is on.
Distorted Computer's sound card is
Sound used as the audio source.
Distorted Other audio source is
Sound used.
Unbalanced Sound from only one side
Sound of Soundbar
Output
Low Volume Volume is too low.
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Plug the audio line-in cable into the computer's audio out jack.
Set all Windows volume controls to their maximum.
Play some audio content on the computer (i.e. audio CD, or MP3).
Turn the Power/Volume knob on the Soundbar clockwise to a higher volume
setting.
Clean and reseat the audio line-in plug.
Test the Soundbar using another audio source (i.e. portable CD player).
Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the
sound card.
Set all Windows volume controls to their midpoints.
Decrease the volume of the audio application.
Turn the Power/Volume knob on the Soundbar counter-clockwise to a lower
volume setting.
Clean and reseat the audio line-in plug.
Troubleshoot the computer's sound card.
Test the Soundbar using another audio source (i.e. portable CD player).
Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the
audio source.
Decrease the volume of the audio source.
Turn the Power/Volume knob on the Soundbar counter-clockwise to a lower
volume setting.
Clean and reseat the audio line-in plug.
Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the
sound card or audio source.
Set all Windows audio balance controls (L-R) to their midpoints.
Clean and reseat the audio line-in plug.
Troubleshoot the computer's sound card.
Test the Soundbar using another audio source (i.e. portable CD player).
Clear any obstructions between the Soundbar and the user.
Turn the Power/Volume knob on the Soundbar clockwise to the maximum volume
setting.
Set all Windows volume controls to their maximum.
Increase the volume of the audio application.
Test the Soundbar using another audio source (i.e. portable CD player).