Apple MD094LL/A Manuale Utente

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

 2010-09-09

Cosmetic Defects to LCD
•  Cracked glass panel
•  Cracked LCD
•  Scratched LCD polarizer
•  Scorched or melted LCD
•  LCD impact damage
•  Foreign material on LCD or 

back side of glass panel.

1.  Replace glass panel. Refer to Take Apart/General 

Information/How to Remove a Broken Glass Panel

2.  Determine if damage was caused by user 

environment, accidental damage, or abuse. If 

applicable, inform user that Apple does not 

warrant damage caused by accident, abuse, 

misuse, flood, fire, earthquake, or other external 

causes. For more information refer to: 

3.  For dark and bright pixel anomalies see 

 symptom flow.

Uncategorized Symptoms
•  Unable to locate appropriate 

symptom code.

1.  Make sure brightness level is set above minimum.
2.  Clean glass panel to make sure external 

contaminants are removed prior to evaluating 

display performance.

3.  Allow LCD display to warm up approximately 

a minute before evaluating display color and 

brightness uniformity performance.

1.  Verify if existing symptom code 

applies to issue reported by 

user.

Yes

Jump to appropriate 

symptom code flow.

No

Document reported failure 

and send feedback to 

stating that a suitable 

symptom code wasn’t found. 

Provide as much detail as 

possible.