Apple MD094LL/A Manuale Utente

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

 2010-09-09

Unlikely cause: LCD panel, power supply, fans, speakers, camera, microphone

Drive Not Recognized/Mount
•  Discs inject and eject, but do 

not appear in Finder

•  Verify that optical media is not 

physically damaged

1.  Use System Profiler Serial-ATA section to see if 

optical drive appears.

2.  System Profiler Serial-ATA section will show any 

media inserted.

3.  Check Finder Preferences and make sure “CD’s, 

DVD’s and iPods” is checked under “Show these 

items on the desktop” in the General section.

1.  Verify if optical drive is listed 

in Serial-ATA section of System 

Profiler.

Yes

Go to step 2.

No

Go to step 3.

2.  Test both CD and DVD media. 

Verify if optical drive can read 

both CD and DVD media.

Yes

No issue, or possible 

intermittent issue. Gather 

more information from user.

No

If both types of media fail, 

check that Finder Preferences 

are set to “show CD’s and 

DVD’s”, then go to step 3.

If only one type of media fails, 

drive has a laser pickup issue. 

Replace optical drive.

3.  Connect known-good optical 

drive to SATA cable. Verify if 

both CD and DVD media are 

read reliably.

Yes

SATA cable and port on logic 

board good. Go to step 5.

No

Go to step 4.

4.  Reseat SATA cable connections 

at optical drive and logic board 

(cable connects to back of logic 

board). Verify if both CD and 

DVD media are read reliably.

Yes

Go to step 6.

No

Replace SATA cable and test.

If issue persists, replace logic 

board.

Go to step 6.