Apple 20Display Monitor does not go to sleep, When you change resolutions, the monitor goes blank

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The monitor does not go to sleep.

Some monitors, computers, and video cards do not support the Energy Saver feature. See the documentation that came with your monitor and video card for more information.

If you have a Power Macintosh 9500, you can get an upgrade to your software that allows your monitor to work with Energy Saver. Call the Apple Service and Support number found in the service and support information that came with your computer.

When you use both Energy Saver and a screen saver program, the screen freezes.

The screen saver program may be conflicting with Energy Saver. Turn off either the screen saver program or the Energy Saver control panel.

You see two resolution options labeled 640x870 (75 Hz).

If you’re using the Macintosh 24AC video card, you may see two apparently identical resolution selections. The first option sets your monitor to display millions of colors, and the second option sets your monitor to display 256 colors.

When you change resolutions, the monitor goes blank.

If your monitor is connected to the Macintosh 24AC video card, the monitor may go blank for 15 seconds when you select a resolution that does not work with your monitor. Try selecting another resolution.

40Chapter 4

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Contents Multiple Scan 20 Display Apple Computer, Inc Contents Adjusting the Picture Using the Display SoftwareTips and Troubleshooting Technical InformationDOC statement FCC statementRadio and television interference 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 desktopClick the Install button Installer screen appearsRead the Welcome screen and click OK Using the Display Software About the Control StripWorking with the Control Strip Choose Control Panels from the Apple K menu Changing screen resolutionWindow opens showing all the control panels Make the following choices in the control panelOther things you can do with the Monitors control panel Conserving energy What happens after you turn on the energy saving featureClose the control panel Using ColorSync Using Energy Saver with a screen saverClick Set Profile ColorSync control panel appearsClick a monitor name to select it To show or hide the Control Strip, follow these steps Configuring the Control StripShowing and hiding the Control Strip Control Strip control panel appearsBox appears To change the keyboard command, click Define hot keyPress the keys you want to use, then click OK Changing the font in Control Strip menus Adjusting the Picture Reset buttonAdjusting the contrast of the picture Making adjustments to the pictureAdjusting the brightness 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 contrastResetting all picture controls Resetting individual picture controlsUse these controls Follow this step Tips and Troubleshooting Care and cleaningTo clean the screen of the monitor TroubleshootingProtecting your monitor from theft 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 off center No colors appear on the screenScreen image is too large or too small After many hours of use, the screen image appears dim You can’t control the sound volume of a CDYou don’t see the monitor resolution you want Over time, you experience eyestrainAfter you change the screen resolution, icons move When you change resolutions, the monitor goes blank You see two resolution options labeled 640x870 75 HzMonitor does not go to sleep Appendix a CompatibilityConnecting the monitor to your IBM PC-compatible computer Resolution Vertical refresh rate hertzConnect the PC adapter to the monitor cable This adapter is shipped with your monitorTighten the thumbscrews on the monitor cable Using the monitor Appendix B Technical Information Voltage Adjusted at the factory for the following standard modesFrequency 47-63 Hz Power Maximum Approximately 66 pounds 30 kilogramsTilt To + 15˚ Swivel range ± 45˚ minimum Operating 10% to 80% Storage To 90% Shipping To 95%Monitor cable specifications Pin miniature D-type connectorPin Output signal Apple Computer, Inc