System information

Mac mini (Mid 2011) Symptom Charts — Startup and Power 38
2011-07-21
3. Can the source of the odor be
located using nose?
Yes Replace aected module(s)
and retest system.
P08
No Contact Apple for assistance
if you feel that there is a
possible safety issue with the
computer that has not been
resolved in the previous steps.
Noise, Hum, Vibration
Unlikely cause: enclosure, cables.
Quick Check
Symptoms Quick Check
Noise/Hum/Vibration
• Buzzing noise
• Rattling noise
• Ticking noise
• Squeaking
1. Disconnect all third party devices and conrm
whether the odor is being generated by the
device.
2. Verify that the vents on the bottom and
back of the system are free of dust and other
obstructions that might inhibit proper airow
through the system.
3. Launch Applications/Utilities/Activity Monitor.
Determine whether an application or process is
consuming a high percentage of CPU bandwidth.
CPU intensive applications can cause the fan
to run fast in order to maintain the proper
internal system temperatures. If needed, quit the
application or restart the system to resolve the
issue.
4. Play sound sample at loud and soft volume levels
to determine if the noise is caused by the speaker
or the amplier circuit. Jump to ‘Distorted sound
from built-in speaker symptom ow for additional
information.
5. Go to Deep Dive.