Dell Precision T3400 (Late 2007) - Manual (Page 126)

126
Troubleshooting
C HECK THE SPEAKER CABLE CONNECTIONS — 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 NSURE THAT THE SUBWOOFER AND THE SPEAKERS ARE TURNED ON — See the
setup diagram supplied with the speakers. If your speakers have volume controls,
adjust the volume, bass, or treble to eliminate distortion.
A DJUST THE W INDOWS VOLUME CONTROL — 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 ISCONNECT HEADPHONES FROM THE HEADPHONE CONNECTOR — Sound from the
speakers is automatically disabled when headphones are connected to the computer’s
front-panel headphone connector.
T EST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
E LIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights, or
halogen lamps to check for interference.
R UN THE SPEAKER DIAGNOSTICS
R EINSTALL THE SOUND DRIVER — See "Drivers" on page 131.
R UN THE H ARDWARE T ROUBLESHOOTER — See "Hardware Troubleshooter" on
page 107.
No sound from headphones
C HECK THE HEADPHONE CABLE CONNECTION — Ensure that the headphone cable is
securely inserted into the headphone connector (see "About Your Computer" on
page 21).
A DJUST THE W INDOWS VOLUME CONTROL — 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.
Video and Monitor Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.