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Mac mini (Mid 2010) Symptom Charts — Input/Output Devices 67
2010-08-03
4. Open the Apple System Proler.
Selecting USB, do you see “IR
Receiver” listed?
Yes IR Receiver reporting on USB
bus. Check for IR cable. Go to
step 5
No Remove bottom cover, and
fan, and reseat the IR sensor
connection to logic board.
Replace any damaged IR
sensor cable assembly. Go to
step 5.
X03
5. Remove bottom cover,
disconnect AirPort antenna
and remove shield, disconnect
and remove fan and cowling,
then disconnect IR/LED sensor
cable and connect a known-
good sensor assembly to logic
board to verify that IR sensor
functionality is restored.
Yes Take apart system to access
the IR lens and sensor ,and
verify that they are correctly
installed and not blocked
by any foreign element. If
correctly installed, replace IR
sensor cable assembly.
X13
No Replace logic board (IR
controller is located on logic
board).
M99
Audio: Built-in Speaker Has Distorted Sound
Quick Check
Symptoms Quick Check
Audio: Built-in Speakers Have
Distorted Sound
• No audio from built-in speaker.
• Audio from speaker is distorted
1. Launch System Preferences and select Sound/
Output options. Verify that the sound output
option is set to system’s internal speaker and that
the balance control is set to the center position.
2. Obtain known good high quality sound le
or use iTunes music store sound samples to
evaluate sound quality. Verify suspect sound les
on another system to determine whether the
distortion is caused by the system or the sound
le.
3. Set volume control to mid-range. Overdriving the
built-in speaker can cause distortion.