Apple 850AV manual Screen is dark or appears dim, Over time, you experience eyestrain

No image appears on the screen and the monitor’s power indicator light is on.

mMake sure the monitor cable is connected correctly to the computer.

mMake sure the thumbscrews on the monitor cable are tightened securely.

mMake sure the contrast (O) and brightness (¤) controls are set correctly. The contrast and brightness controls are on the front of your monitor.

mRestart your computer, holding down x-Option AV. This resets the monitor to factory default settings.

The screen is dark or appears dim.

mMake sure that your computer and monitor are turned on.

mMake sure that the power cord and the monitor cable are securely connected at both ends.

mIncrease the contrast and brightness of the screen image. The contrast (O) and brightness (¤) controls are on the front of your monitor.

mA screen saver that darkens your screen may be activated. Press any key on the keyboard to reactivate the monitor.

mOn 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.

mAdjust 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.

mAdjust 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.

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