Dell Latitude XT2 XFR Service Manual - Page 82

Power Problems, Sound and Speaker Problems

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Dell™ Latitude™ XT2 XFR Service Manual Save and close any open files and exit any open programs you are not using to see if that resolves the problem. • See the software documentation for minimum memory requirements. If necessary, install additional memory (see Replacing a Memory Module). • Reseat the memory modules (see Memory) to ensure that your computer is successfully communicating with the memory. • Run the Dell Diagnostics (see Dell Diagnostics). IF YOU EXPERIENCE OTHER MEMORY PROBLEMS - • Reseat the memory modules (see Memory) to ensure that your computer is successfully communicating with the memory. • Ensure that you are following the memory installation guidelines (see Replacing a Memory Module). • Ensure that the memory you are using is supported by your computer. For more information about the type of memory supported by your computer, see the Setup and Features Information Guide for your computer at support.dell.com. • Run the Dell Diagnostics (see Dell Diagnostics). 6.2.6 Power Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. IF THE POWER LIGHT IS BLUE AND THE COMPUTER IS NOT RESPONDING - See Diagnostic Lights. IF THE POWER LIGHT IS OFF - The computer is either turned off or is not receiving power. • Reseat the power cable in the power connector on the back of the computer and the electrical outlet. • Bypass power strips, power extension cables, and other power protection devices to verify that the computer turns on properly. • Ensure that any power strips being used are plugged into an electrical outlet and are turned on. • Ensure that the electrical outlet is working by testing it with another device, such as a lamp. ELIMINATE INTERFERENCE - Some possible causes of interference are: • Power, keyboard, and mouse extension cables • Too many devices connected to the same power strip • Multiple power strips connected to the same electrical outlet 6.2.7 Sound and Speaker Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. 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. ADJUST THE WINDOWS VOLUME CONTROL - Click or double-click the speaker icon in the lowerright corner of your screen. Ensure that the volume is turned up and that the sound is not muted. DISCONNECT HEADPHONES FROM THE HEADPHONE CONNECTOR - Sound from the speakers is automatically disabled when headphones are connected to the computer's front-panel headphone connector. ELIMINATE POSSIBLE INTERFERENCE - Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference. Page 82 of 94 Version A00-01

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Dell
™
Latitude™ XT2 XFR Service Manual
Page 82 of 94
Version A00-01
Save and close any open files and exit any open programs you are not using to see if that resolves the
problem.
•
See the software documentation for minimum memory requirements. If necessary, install
additional memory (see
Replacing a Memory Module
).
•
Reseat the memory modules (see
Memory
) to ensure that your computer is successfully
communicating with the memory.
•
Run the Dell Diagnostics (see
Dell Diagnostics
).
IF YOU EXPERIENCE OTHER MEMORY PROBLEMS —
•
Reseat the memory modules (see
Memory
) to ensure that your computer is successfully
communicating with the memory.
•
Ensure that you are following the memory installation guidelines (see
Replacing a Memory
Module
).
•
Ensure that the memory you are using is supported by your computer. For more information
about the type of memory supported by your computer, see the
Setup and
Features
Information Guide
for your computer at
support.dell.com
.
•
Run the Dell Diagnostics (see
Dell Diagnostics
).
6.2.6
Power Problems
CAUTION:
Before you begin any of the procedures in this section, follow the safety
instructions that shipped with your computer.
IF THE POWER LIGHT IS BLUE AND THE COMPUTER IS NOT RESPONDING —
See
Diagnostic
Lights
.
IF THE POWER LIGHT IS OFF —
The computer is either turned off or is not receiving power.
•
Reseat the power cable in the power connector on the back of the computer and the electrical
outlet.
•
Bypass power strips, power extension cables, and other power protection devices to verify that
the computer turns on properly.
•
Ensure that any power strips being used are plugged into an electrical outlet and are turned
on.
•
Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
ELIMINATE INTERFERENCE —
Some possible causes of interference are:
•
Power, keyboard, and mouse extension cables
•
Too many devices connected to the same power strip
•
Multiple power strips connected to the same electrical outlet
6.2.7
Sound and Speaker Problems
CAUTION:
Before you begin any of the procedures in this section, follow the safety
instructions that shipped with your computer.
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.
ADJUST THE WINDOWS 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.
DISCONNECT HEADPHONES FROM THE HEADPHONE CONNECTOR —
Sound from the speakers is
automatically disabled when headphones are connected to the computer’s front-panel headphone
connector.
ELIMINATE POSSIBLE INTERFERENCE —
Turn off nearby fans, fluorescent lights, or halogen lamps
to check for interference.