Dell Precision T7400 (Late 2007) - Manual (Page 49)

Quick Reference Guide 49
Sound and Speaker Problems
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
No sound from speakers
NOTE: The volume control in MP3 and other media players may override the Windows
volume setting. Always check to ensure that the volume on the media player(s) has
not been turned down or off.
C H E C K T H E S P E A K E R C A B L E C O N N E C T I O N S — Ensure that the speakers are connected
as shown on the setup diagram supplied with the speakers. If you purchased a sound card,
ensure that the speakers are connected to the card.
E N S U R E T H A T T H E S U B W O O F E R A N D T H E S P E A K E R S A R E T U R N E D O N — See the
setup diagram supplied with the speakers. If your speakers have volume controls, adjust
the volume, bass, or treble to eliminate distortion.
A D J U S T T H E W I N D O W S V O L U M E C O N T R O L — Click or double-click the speaker icon
in the lower-right corner of your screen. Ensure that the volume is turned up and that
the sound is not muted.
D I S C O N N E C T H E A D P H O N E S F R O M T H E H E A D P H O N E C O N N E C T O R — Sound from the
speakers is automatically disabled when headphones are connected to the computer’s
front-panel headphone connector.
T E S T T H E E L E C T R I C A L O U T L E T — Ensure that the electrical outlet is working by testing
it with another device, such as a lamp.
E L I M I N A T E P O S S I B L E I N T E R F E R E N C E — Turn off nearby fans, fluorescent lights, or
halogen lamps to check for interference.
R U N T H E S P E A K E R D I A G N O S T I C S
R E I N S T A L L T H E S O U N D D R I V E R — See "Drivers" in your User’s Guide.
R U N T H E H A R D W A R E T R O U B L E S H O O T E R — See "Restoring Your Operating System"
in your User’s Guide.
No sound from headphones
C H E C K T H E H E A D P H O N E C A B L E C O N N E C T I O N — Ensure that the headphone cable is
securely inserted into the headphone connector (see "About Your Computer" in your
User’s Guide).
A D J U S T T H E W I N D O W S V O L U M E C O N T R O L — Click or double-click the speaker icon
in the lower-right corner of your screen. Ensure that the volume is turned up and that
the sound is not muted.