Apple LATE 2009 manual P04

6. Reinstall fan while carefully	Yes	Noise issue resolved. Suspect	P04
ensuring that the cable is		issue cause by interference
routed properly and there’s		from wiring or possible
no interference with the fan		distortion or fan housing
blades. After reassembling		when installed in system.
system verify that the noise		Proper reassembly resolved
issue is resolved.		issue.
	No	Go to step 7.

7. Disconnect these major	Yes	Identify, inspect, and if	P04
modules/parts (e.g: hard drive,		necessary replace the part
optical drive, fan) one at a time		that caused the noise to
then power ON the system.		disappear when it was
Determine if noise issue goes		disconnected from the
away when one of the modules		system.
is disconnected.
	No	All parts verified. Verify that
		the correct symptom flow is
		being used.

2009-11-03 Mac mini (Late 2009) Symptom Charts — Startup and Power  33