Apple MD772LL/A, MC561LL/A manual Problems with Your Display, If no image appears on the screen

ÂÂ Make sure the side panel is closed (follow the instructions starting on page 52) and the PCI port access covers are in place (see “Adding PCI Express Cards” on page 74). Antenna reception is reduced when your Mac Pro is not closed properly.

ÂÂ Check the Wi-Fi signal level. You may have up to four bars in the Wi-Fi status icon (Z) in the menu bar.

ÂÂ For more information about Wi-Fi, choose Help > Help Center and search for “Wi-Fi.” Also see the instructions that came with the wireless device for more information.

Problems with Your Display

NOTICE:  If you have a problem with your Apple display and nothing in this manual solves it, contact an Apple Authorized Service Provider or Apple for assistance. If you attempt to repair the display yourself, any damage you may cause to the display will not be covered by the limited warranty on your display. Contact an Apple Authorized Reseller or Apple Authorized Service Provider for additional information about this or any other warranty question.

If no image appears on the screen

ÂÂ Make sure the computer is turned on, and if the display has a power button, make sure it’s turned on.

ÂÂ Make sure the cables are connected properly to your computer and the display.

ÂÂ If your graphics card has an internal power cable, make sure it’s connected to the card and the logic board.

ÂÂ Make sure your computer is not in sleep. Press the power button or any key to see if the computer wakes.

Chapter 4   Problem, Meet Solution 93