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Mac mini (Late 2009) Symptom Charts — Mechanical 84
2010-08-03
Deep Dive
Check Result Action Code
1. Run latest available service
utilities to check the thermal
sensors and fan functional
states. Was an error generated?
Yes Check fan connection to logic
board and retest.
No Go to step 2.
2. Does noise sound like fan is
running faster than expected?
Yes Reset SMC by disconnecting
power cord for ~15 seconds
then retest. If issue continues
go to step 3.
No Go to step 5.
3. If an optical drive is present,
does the noise change when
the optical drive is being
accessed or media is inserted
or ejected?
Yes Suspect issue with optical
drive or the media being
used. Jump to ‘Optical Drive
Noisy symptom ow for
additional information.
No Go to step 4.
4. Mute the system volume. Verify
whether the issue still occurs.
Yes Go to step 5.
No Suspect issue with speaker
or audio amplier circuitry.
Go to ‘Distorted Sound
From Internal Speaker’
symptom ow for additional
information.
5. Remove bottom cover,
disconnect AirPort antenna
and remove shield, disconnect
and remove fan and rotate
its blades. Verify that fan
blades spin smoothly without
interference from fan housing
and does not produce
abnormal noise.
Yes Fan reseated, blades rotate,
noise gone.
No Reinstall fan , making sure
that the blades do not
interfere with other elements
or cable routings when
installed and retest. If fan
does not correctly spin or has
broken blade, replace aected
fan.
X23