Apple Mac mini Late 2009 (Technician Guide) - Manual (Page 77)

Mac mini (Late 2009) Symptom Charts — Mechanical 77 2009-11-03
Deep Dive
Check Result Action Code
Run Apple Hardware Test or 1.
Apple Server Diagnostics. Was
an error generated?
Yes Check fan connection to
interconnect board and retest.
No Go to step 2.
Does noise sound like fan is 2.
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.
Does the noise change when 3.
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 flow for
additional information.
No Go to step 4.
Mute the system volume. Verify 4.
whether the issue still occurs.
Yes Go to step 5.
No Suspect issue with speaker
or audio amplifier circuitry.
Go to ‘Distorted Sound
From Internal Speakers’
symptom flow for additional
information.
Open unit. Remove fan and 5.
rotate the blades. Verify that fan
blades spin smoothly without
interference from fan housing.
Yes Fan reseated, blades rotate,
noise gone.
No Replace affected fan. P04