Справочник Пользователя для Apple MD094LL/A

iMac (27-inch, Mid 2010) Symptom Charts — Startup and Power 

 2010-09-09

7.  Disconnect DisplayPort cable 

between LCD display and logic 

board, and verify if there is 

damage to cable or connectors. 

Repeat with vertical sync cable 

connected between LCD panel 

and LED backlight board.

Yes

Replace DisplayPort cable 

or any other damaged part/

module.

No

Reinstall DisplayPort cable 

and vertical sync cable. 

Go to step 8.

8.  Verify if issue is still visible 

after reinstalling/replacing 

DisplayPort cable and vertical 

sync cable.

Yes

If video corruption symptom 

appears to be like a rolling 

image (bad location of the 

top of image), replace VSync 

cable and go to step 9.

Else replace DisplayPort cable 

and go to step 9

No

Issue resolved with reseating/

replacing damaged cable(s).

9.  Verify if issue is still visible after 

replacing DisplayPort cable or/

and vertical sync cable.

Yes

Replace LCD panel.

No

Issue resolved with replacing 

the cable(s).

10. Verify if issue is still present 

with replacement LCD panel 

installed.

Yes

Contact Apple Technical 

Support.

No

Run Apple Service Display 

Utility Diagnostic and enter 

the receipt code in the “Repair 

Notes” section of GSX. Issue 

resolved with replacement of 

LCD panel.