74 Troubleshooting
CHECK 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
turnedon.
• If the power light is blinking, press a key on the keyboard or move the mouse to
resume normal operation.
TEST THE ELECTRICAL OUTLET —Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
CHECK THE DIAGNOSTIC LIGHTS —See "Diagnostic Lights" on page76.
CHECK 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.
MOVE 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.
MOVE 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.
ROTATE THE MONITOR TO ELIMINATE SUNLIGHT GLARE AND POSSIBLE
INTERFERENCE
ADJUST THE WINDOWS 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
CHECK THE GRAPHICS CARD POWER CABLE CONNECTION —Ensure that the power
cable for the graphics card(s) is correctly attached to the card.
CHECK 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