Apple MD094LL/A Manual Do Utilizador

iMac (27-inch, Mid 2010) Symptom Charts — Input/Output Devices 

 2010-09-09

4.  After clicking “Unpair”, verify if 

the computer now responds to 

the Apple Remote.

Yes

Pairing issue. Issue resolved.

No

Possible IR board issue. 

Go to step 5.

5.  Open Apple System Profiler. 

Verify if “IR Receiver” is listed in 

USB list of devices.

Yes

IR board reporting on USB 

bus. Check for lens block. 

Go to step 6.

No

Inspect and reseat IR cable 

connection to logic board. 

Go to step 7.

6.  Check that IR board is correctly 

fitted and aligned with Apple 

window and that lens is not 

blocked by any foreign material 

and re-test. Verify if computer 

responds to Apple Remote.

Yes

Lens blocked or sensor not 

aligned with window. Issue 

resolved.

No

Lens damaged or inoperable. 

Replace IR board. Go to step 7.

7.  After reseating or replacing 

IR board, verify if “IR Receiver” 

is listed under USB in Apple 

System Profiler, and that 

computer now responds to 

Apple Remote.

Yes

IR module reseated/replaced. 

Issue resolved.

No

If IR board was only reseated, 

replace IR cable. Go to step 8.

8.  After replacing IR cable, verify if 

“IR Receiver” is listed under USB 

in Apple System Profiler, and 

that computer now responds to 

Apple Remote.

Yes

IR cable replaced. Issue 

resolved.

No

Replace IR board. Go to step 9.

9.  After replacing IR board, verify 

if “IR Receiver” is listed under 

USB in Apple System Profiler, 

and that computer now 

responds to Apple Remote.

Yes

IR board replaced. Issue 

resolved.

No

Replace logic board.