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No image appears on the screen and the monitor’s power indicator light is on.
m Make sure the monitor cable is connected correctly to the computer.
m Make sure the thumbscrews on the monitor cable are tightened securely.
m Make sure the contrast (
O
) and brightness (
¤
) controls are set correctly.
The contrast and brightness controls are on the front of your monitor.
m Restart your computer, holding down x-Option AV. This resets the monitor
to factory default settings.
The screen is dark or appears dim.
m Make sure that your computer and monitor are turned on.
m Make sure that the power cord and the monitor cable are securely
connected at both ends.
m Increase the contrast and brightness of the screen image. The contrast (
O
)
and brightness (
¤
) controls are on the front of your monitor.
m A screen saver that darkens your screen may be activated. Press any key on
the keyboard to reactivate the monitor.
m On Mac OS–based computers, the Energy Saver option may be activated.
Press any key on the keyboard to reactivate the monitor. In approximately
10 seconds, the monitor is reactivated.
Over time, you experience eyestrain.
m Adjust the screen contrast. In a bright room, contrast is usually best set at
maximum; in a dim room, lower contrast is usually more comfortable. The
contrast (
O
) controls are on the front of your monitor. Also, be sure to take
occasional breaks to focus your eyes on a distant object.
m Adjust the color temperature or white point of the screen image. For most
application programs, a white point of 9300 K is best. For Mac OS–based
computers, click the Color button in the Monitors & Sound control panel
and set a new white point. For Windows-based computers, open the Tools
menu, select Color Temperature, and set a new white point.
68
Chapter 5