Dell XPS 420 (Late 2007) - Manual (Page 74)

74
Troubleshooting
C HECK THE MONITOR POWER LIGHT —
• If the power light is lit or blinking, the monitor has power.
• If the power light is off, firmly press the button to ensure that the monitor is
turned on.
• If the power light is blinking, press a key on the keyboard or move the mouse to
resume normal operation.
T EST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
C HECK THE DIAGNOSTIC LIGHTS — See "Diagnostic Lights" on page 76.
C HECK THE MONITOR SETTINGS — See the monitor documentation for instructions
on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor,
and running the monitor self-test.
M OVE THE SUBWOOFER AWAY FROM THE MONITOR — If your speaker system
includes a subwoofer, ensure that the subwoofer is positioned at least 60 centimeters
(2 feet) away from the monitor.
M OVE THE MONITOR AWAY FROM EXTERNAL POWER SOURCES — Fans, fluorescent
lights, halogen lamps, and other electrical devices can cause the screen image to
appear shaky. Turn off nearby devices to check for interference.
R OTATE THE MONITOR TO ELIMINATE SUNLIGHT GLARE AND POSSIBLE
INTERFERENCE
A DJUST THE W INDOWS DISPLAY SETTINGS —
1 Click Start → Control Panel→ Hardware and Sound→ Personalization→ Display
Settings.
2 Adjust Resolution and Colors settings, as needed.
3D image quality is poor
C HECK THE GRAPHICS CARD POWER CABLE CONNECTION — Ensure that the power
cable for the graphics card(s) is correctly attached to the card.
C HECK THE MONITOR SETTINGS — See the monitor documentation for instructions
on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor,
and running the monitor self-test.
book.book Page 74 Tuesday, November 27, 2007 10:29 AM