Apple 20Display manual After many hours of use, the screen image appears dim

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After many hours of use, the screen image appears dim.

mIncrease the brightness of the picture to your preference. See “Adjusting the Brightness of the Picture” in Chapter 3.

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. See “Adjusting the Contrast of the Picture” in Chapter 3. Also, be sure to take occasional breaks to focus your eyes on a distant object.

You don’t hear any sound from your computer.

mThe computer’s internal speaker is turned off whenever a cable is connected to the sound output port (marked by -) on the back panel of your computer. If the sound output port is in use, you can still hear sound

from the monitor’s speakers or from headphones connected to the monitor’s headphone port (marked by f)

You can’t find the Control Strip.

mYou may have hidden the Control Strip. Open the Control Strip control panel and click the button labeled “Show Control Strip.”

You can’t control the sound volume of a CD.

mThe volume control on the Control Strip affects the computer’s beep sound

only. To control the volume of a CD, use the AppleCD Audio Player, located in the Apple (K) menu.

You don’t see the monitor resolution you want.

You can see additional resolution choices in the Monitors control panel if you hold down the Option key on your keyboard while you click the Options button in the control panel. In the list that appears, click the resolution you want. (Some models use a different control panel. Consult the documentation that came with your computer or system software upgrade kit.)

Note: Some of the items in this list are not optimized for your monitor. If you choose a resolution that doesn’t work with your monitor, you may see a message, or your monitor may go blank or show static. After approximately 15 seconds, your monitor should revert to a usable resolution. If it does not, restart your computer.

38Chapter 4

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Contents Multiple Scan 20 Display Apple Computer, Inc Contents Adjusting the Picture Using the Display SoftwareTips and Troubleshooting Technical InformationFCC statement Radio and television interferenceDOC statement Vcci statementSetting Up Important safety instructionsWhat about electromagnetic emissions? Getting ready to set up Your Apple Multiple Scan 20 Display at a glance Choosing a good location for your monitor Lifting and positioning the monitorShoulders relaxed Using more than one monitor Do you need a video card?Connecting the monitor to your computer Connecting your keyboard to the monitor Tighten the thumbscrews on the connectionTurning the monitor on To turn on the monitor for the first timeInstalling the display software Disk’s icon appears on the desktopRead the Welcome screen and click OK Installer screen appearsClick the Install button Using the Display Software About the Control StripWorking with the Control Strip Changing screen resolution Window opens showing all the control panelsChoose Control Panels from the Apple K menu Make the following choices in the control panelOther things you can do with the Monitors control panel Close the control panel What happens after you turn on the energy saving featureConserving energy Using ColorSync Using Energy Saver with a screen saverClick a monitor name to select it ColorSync control panel appearsClick Set Profile Configuring the Control Strip Showing and hiding the Control StripTo show or hide the Control Strip, follow these steps Control Strip control panel appearsPress the keys you want to use, then click OK To change the keyboard command, click Define hot keyBox appears Changing the font in Control Strip menus Adjusting the Picture Reset buttonMaking adjustments to the picture Adjusting the brightness of the pictureAdjusting the contrast of the picture Use this control Follow this stepAdjusting the center of the picture Follow these stepsAdjusting the size of the picture Adjusting the rotation and color uniformity of the picture Adjusting the shape of the picture Adjusting the convergence of the picture Selecting the color temperature Adjust the color temperature of the pictureResetting controls to original levels Resetting brightness and contrastUse these controls Follow this step Resetting individual picture controlsResetting all picture controls Tips and Troubleshooting Care and cleaningProtecting your monitor from theft TroubleshootingTo clean the screen of the monitor Make sure that the power cord is plugged in properly Monitor’s power indicator light doesn’t come onScreen is dark or appears dim Screen flickersScreen image is too large or too small No colors appear on the screenScreen image is off center You can’t control the sound volume of a CD You don’t see the monitor resolution you wantAfter many hours of use, the screen image appears dim Over time, you experience eyestrainAfter you change the screen resolution, icons move Monitor does not go to sleep You see two resolution options labeled 640x870 75 HzWhen you change resolutions, the monitor goes blank Appendix a CompatibilityConnecting the monitor to your IBM PC-compatible computer Resolution Vertical refresh rate hertzTighten the thumbscrews on the monitor cable This adapter is shipped with your monitorConnect the PC adapter to the monitor cable Using the monitor Appendix B Technical Information Adjusted at the factory for the following standard modes Frequency 47-63 Hz Power MaximumVoltage Approximately 66 pounds 30 kilogramsTilt To + 15˚ Swivel range ± 45˚ minimum Operating 10% to 80% Storage To 90% Shipping To 95%Pin Output signal Pin miniature D-type connectorMonitor cable specifications Apple Computer, Inc