Справочник Пользователя для Apple MD094LL/A

iMac (27-inch, Mid 2010) Symptom Charts — Display 

 2010-09-09

Unlikely cause: logic btoard, power supply, hard drive, optical drive, fans, speakers, camera, 
microphone

Pixel Anomalies
•  Dark dot anomalies
•  Bright dot anomalies
•  Debris on inside surface of 

glass panel

•  Debris on surface of LCD panel

1.  Clean outside surface of glass panel.
2.  See 

1.  Determine if “defects” are dust/

debris on surface of glass panel 

or LCD.

Yes

Clean glass and/or LCD using 

procedures in Glass Panel 

take-apart chapter.

No

Go to step 2.

2.  Determine if bright pixel 

defects exceed acceptable 

number. See

Yes

Replace LCD panel.  

Run 

 to verify the resolution 

of issue.  

Enter the resulting verification 

code into the “Notes” field 

of GSX and return system to 

customer if repair is complete

No

LCD panel meets bright pixel 

defect specifications.  

Go to step 3.

3.  Determine if dark pixel defects 

exceed acceptable number. See

Yes

Replace LCD panel.  

Run 

 to verify the resolution 

of issue.  

Enter the resulting verification 

code into the “Notes” field 

of GSX and return system to 

customer if repair is complete

No

LCD panel meets dark pixel 

defect specifications.  

Go to step 4.