Apple MB382LL/A User Guide - Page 17
Troubleshooting Your Display, If the screen doesn't have an image, If the screen is dim
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Troubleshooting Your Display Before performing any of these steps, make sure your computer is turned on, the display is plugged into an outlet, all the cables are connected properly to your computer and display, and your computer is not in sleep mode. If the screen doesn't have an image: Â Check the cables and connectors again to make sure they are connected properly to your computer and the display. Â Make sure your computer is turned on and is not in sleep mode. If your computer's display is closed, use the external keyboard or mouse to wake the computer from sleep. Â Reset the PRAM by restarting your computer while holding down the Command (x), Option, P, and R keys until you hear the startup sound a second time. If the screen is dim: Â Make sure the display brightness controls are set properly. Choose Apple () > System Preferences and click Displays. Drag the Brightness slider to adjust the brightness. Â If the colors on the display are too saturated or not correct, you may need to calibrate your display. Open Displays preferences, click Color, click Calibrate, and follow the instructions. If your portable computer isn't charging: Make sure the MagSafe connector from your display is seated properly in the MagSafe power port on your computer. English 17