Apple MA970LL User Manual - Page 74

If no colors appear on the screen or the colors don't look right

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 The flickering may be caused by interference from a nearby power line, a fluorescent light, or an electrical device-for example, a radio, a microwave oven, or another computer. Try relocating nearby electrical devices or moving your computer and display. If no colors appear on the screen or the colors don't look right  Make sure the display is connected firmly to the computer.  Open the Displays pane of System Preferences and make sure the display is set to display millions of colors. For more information about color and your display, see Mac Help.  Calibrate the display, as described on page 73. If after you change the screen resolution, desktop icons move Changing the screen resolution affects the display of information on your screen. The operating system may reposition icons when you change the screen resolution. If the screen freezes  Force the frozen application to quit. Choose Apple () > Force Quit and select the application.  If that doesn't work, force the computer to restart by pressing the power (®) button for 5 or 6 seconds until your Mac Pro shuts down. Press the power (®) button again to start up your Mac Pro. 74 Chapter 4 Problem, Meet Solution

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74
Chapter 4
Problem, Meet Solution
Â
The flickering may be caused by interference from a nearby power line, a fluorescent
light, or an electrical device—for example, a radio, a microwave oven, or another
computer. Try relocating nearby electrical devices or moving your computer and
display.
If no colors appear on the screen or the colors don’t look right
Â
Make sure the display is connected firmly to the computer.
Â
Open the Displays pane of System Preferences and make sure the display is set
to display millions of colors. For more information about color and your display, see
Mac Help.
Â
Calibrate the display, as described on page 73.
If after you change the screen resolution, desktop icons move
Changing the screen resolution affects the display of information on your screen.
The operating system may reposition icons when you change the screen resolution.
If the screen freezes
Â
Force the frozen application to quit. Choose Apple (
) > Force Quit and select the
application.
Â
If that doesn’t work, force the computer to restart by pressing the power (
®
) button
for 5 or 6 seconds until your Mac Pro shuts down. Press the power (
®
) button again
to start up your Mac Pro.