Speakers - Dell Dimension XPS 50 Reference Manual

4-6 Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide
Verify the power source by plugging in an appliance that you know works.
Plug the monitor directly into an electrical outlet, bypassing any power protection
devices.
If the power indicator is not lit, check for a bad power cable by turning off the sys-
tem and swapping the monitor and computer power cables.
Perform the monitor self-test as described in the documentation that came with
the monitor.
Refer to "Video Cards" in Chapter 6 for further troubleshooting information.
If the picture quality is poor, perform these checks:
Rotate the monitor to face a different direction. If the picture changes, refer to
"Environmental Factors" found earlier in this chapter. Monitors are particularly
susceptible to EMI, which causes colors to fade and blend.
If the orientation of the computer affects the display geometry, check the docu-
mentation that came with the monitor for information on adjustments.
Degauss (demagnetize) the monitor as described in the documentation that
came with the monitor.
If you changed the resolution or refresh rate settings of the monitor, return the
monitor to its manufacturer's recommended settings (refer to the monitor
documentation).
Turn off the computer system, and examine the video-interface cable connector
for bent, pushed in, broken, or missing pins. Remove any video extension cables,
reseat the monitor's video-interface cable connector, and securely tighten the
captive screws. Then reboot the computer system.
NOTE: Some missing pins may be normal for your monitor; check the documen-
tation that came with the monitor.
Perform the monitor self-test as described in the documentation that came with
the monitor.
If another monitor or computer is available, try it.
Move the monitor to another room.
Reinstall the video drivers as described in the documentation that came with the
video card.
Refer to "Video Cards" in Chapter 6 for further troubleshooting information.
Perform the following checks for speaker problems:
Ensure the speakers are properly connected as shown on the Getting Started
sheet and as described in the documentation that came with the speakers.
Verify that the speakers and/or subwoofer are turned on if they have a power
control.
Turn up the volume knob on the speakers.