Apple Mac mini Late 2009 (Technician Guide) - Manual (Page 63)

Mac mini (Late 2009) Symptom Charts — Input/Output Devices 63 2009-11-03
Open the Apple System Profiler. 4.
Selecting USB, do you see “IR
Receiver” listed?
Yes IR Receiver reporting on USB
bus. Check for lens block. Go
to step 5
No Inspect and reseat IR cable to
IR board. Replace a damaged
IR cable. Go step 6
After clearing lens, does the 5.
computer now respond to the
Apple Remote?
Yes Lens blocked. Issue resolved.
No Lens damaged or inoperable.
Replace the IR Receiver or top
housing.
X13
After reseating or replacing the 6.
IR cable, does the computer
now respond to the Apple
Remote?
Yes IR cable issue. Issue resolved X03
No IR board failure. Replace the IR
Receiver.