Apple MD094LL/A 用户手册

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

 2010-09-09

1.  Open System Profiler. AirPort 

is listed under Network, while 

Bluetooth is listed under USB. 

Verify if both AirPort and 

Bluetooth cards are recognized.

Yes

Install all available software 

updates for AirPort/Bluetooth 

and re-test. If issue persists 

after software update, go to 

step 4 for AirPort, or go to 

step 6 for Bluetooth.

No

Go to step 2 for AirPort.  

Go to step 6 for Bluetooth.

2.  (Airport) Reseat AirPort cable 

connection on logic board and 

on AirPort card. Verify if AirPort 

card is now listed in Apple 

System Profiler.

Yes

Issue resolved by reaseating 

AirPort cable.

No

Replace AirPort cable 

(between logic board and 

AirPort card carrier) and re-

test. Go to step 3.

3.  (Airport) After cable has been 

replaced, verify if AirPort card 

is now listed in Apple System 

Profiler.

Yes

Issue resolved by replacing 

AirPort cable.

No

Replace AirPort card carrier 

board and re-test. If issue 

persists (card not seen on 

bus), replace AirPort card.

4.  (Airport) Enable AirPort and 

verify if known local AirPort 

networks are available, 

or create a computer-to-

computer network with 

another Macintosh computer 

using AirPort. See 

. Verify if you 

connect successfully.

Yes

Issue resolved.

No

Go to step 5.

5.  (Airport) Check and reseat the 

two antennas to the AirPort 

card. Verify if you can connect 

to known AirPort network.

Yes

Issue resolved.

No

Replace AirPort card. If issue 

persists, replace AirPort 

antenna(s). If the damaged 

antenna is the one embedded 

in rear housing behind Apple 

logo, replace rear housing.