Apple MD094LL/A Benutzerhandbuch
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iMac (27-inch, Mid 2010) Symptom Charts — Display
64
2010-09-09
Pixel Anomalies
Unlikely cause: logic btoard, power supply, hard drive, optical drive, fans, speakers, camera,
microphone
microphone
Quick Check
Symptoms
Quick Check
Pixel Anomalies
• Dark dot anomalies
• Bright dot anomalies
• Debris on inside surface of
• 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
2. See
Deep Dive
Check
Result
Action
Code
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
L08
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
L08
No
LCD panel meets dark pixel
defect specifications.
Go to step 4.