Apple MD094LL/A Manuale Utente

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

 2010-09-09

AirPort Card Kernel Panic
•  Kernel Panic on startup
•  Kernel Panic or freezing while 

attempting to connect to WiFi 
networks

•  Kernel Panic while transferring 

data on WiFi networks

1.  Isolate OS by starting up from original Install 

media for this computer, a same-model computer 

in Target Disk Mode, or compatible known-good 

OS on an external drive. AirPort and Bluetooth 

services are available when booted from the 

Install disk.

2.  Ensure that all software and firmware updates for 

the computer and AirPort have been installed.

1.  Disconnect AirPort card cable 

end from logic board. Verify if 

computer now starts without  

kernel panic.

Yes

Reseat AirPort card cable and 

retest. If problem continues 

replace cable. Go to step 2.

No

Kernel panic not related 

to AirPort. Restart from 

Install DVD or known-good 

bootable external drive and 

check Panic.Log file on user’s 

hard drive to find out which 

is the crashing I/O interface. 

Also troubleshoot installed 

Mac OS X software..

2.  With replacement AirPort 

card cable installed, verify if 

computer starts now without 

kernel panic.

Yes

AirPort cable issue. Issue 

resolved.

No

Replace AirPort card carrier 

board and re-test.  If issue 

remains, replace AirPort card. 

Go to step 3.

3.  With replacement AirPort 

carrier or card installed, verify 

if computer starts now without 

kernel panic.

Yes

AirPort carrier or card issue. 

Issue resolved.

No

Replace logic board.