Apple LATE 2009 manual Fan reseated, blades rotate

Deep Dive

Check		Result	Action	Code
1.	Run Apple Hardware Test or	Yes	Check fan connection to
	Apple Server Diagnostics. Was		interconnect board and retest.
	an error generated?
		No	Go to step 2.
2.	Does noise sound like fan is	Yes	Reset SMC by disconnecting
	running faster than expected?		power cord for ~15 seconds
			then retest. If issue continues
			go to step 3.
		No	Go to step 5.
3.	Does the noise change when	Yes	Suspect issue with optical
	the optical drive is being		drive or the media being
	accessed or media is inserted		used. Jump to ‘Optical Drive
	or ejected?		Noisy symptom flow for
			additional information.
		No	Go to step 4.
4.	Mute the system volume. Verify	Yes	Go to step 5.
	whether the issue still occurs.
		No	Suspect issue with speaker
			or audio amplifier circuitry.
			Go to ‘Distorted Sound
			From Internal Speakers’
			symptom flow for additional
			information.
5.	Open unit. Remove fan and	Yes	Fan reseated, blades rotate,
	rotate the blades. Verify that fan		noise gone.
	blades spin smoothly without
		No	Replace affected fan.	P04
	interference from fan housing.

2009-11-03 Mac mini (Late 2009) Symptom Charts — Mechanical  77