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Difference between revisions of "Apple Display Error Codes"

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Deprecated content: see https://support.apple.com for diagnostic assistance
http://support.apple.com/kb/HT2811
 
  
Apple Cinema Displays use their power LED (lower right corner) to tell you about problems. The LED will flash in a certain pattern (a bit like morse code). Here are some common error codes:
 
 
{| border="1" width="40%"
 
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! Pattern
 
! Meaning
 
 
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| short, short, short
 
| The display is detecting wrong video format or an unsupported resolution. Verify that your equipment is compatible and restart the computer. If the issue continues, [http://support.apple.com/kb/HT1379 reset the PRAM]. After resetting the PRAM, if you still see this error, shut down the computer, [[power cycle]] the Cinema Display, and turn on the computer.
 
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| short, long, short
 
| Make sure you are using the correct power adapter with the display. This alert will only appear on displays built in 2004 or later which require an external power adapter.
 
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| short, short, long
 
| The display is detecting a backlight error. Check your display's power connections and restart the computer. If the problem continues, contact Apple or an Apple Authorized Service Provider.
 
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[[Category:Diagnostics]]
 
[[Category:Diagnostics]]
 
[[Category:Mac]]
 
[[Category:Mac]]
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[[Category:TDXNO]]

Latest revision as of 20:59, 26 July 2022

Deprecated content: see https://support.apple.com for diagnostic assistance

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