Apple Mac mini manual Symptoms Quick Check System Runs Hot

System Runs Hot

Quick Check

Symptoms		Quick Check
System Runs Hot		1.	Verify that the vents on the bottom are free of
• System feels very hot			dust and other obstructions that might inhibit
•	Fan not operating		proper airflow through the system.
•	Fan running fast	2.	Verify that the computer is not exposed to
•	System is noisy		direct sunlight which may heat up the enclosure
			making it feel hot to the touch.
		3.	Verify the computer is not running hotter than
			expected for normal operation.
		4.	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 fans
			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.
		5.	Reset SMC by unplugging power cord for ~15
			seconds.

Deep Dive

Check		Result	Action	Code
1.	Run latest available service	Yes	Suspect possible fan or
	utilities for thermal sensor or		sensor error. Check fan
	fan functional state. Was an		cable connection to the
	error generated?		interconnect board.
		No	Go to step 2.
2.	Does noise sound like fan is	Yes	Fan running fast. Reset SMC
	running faster than expected?		by disconnecting power cord
			for ~15 seconds then retest. If
			issue continues go to step 3.
		No	Go to step 3.
3.	Remove bottom cover,	Yes	Fan reseated, blades rotate.
	disconnect AirPort antenna
	and remove shield, disconnect
	and remove fan and rotate	No	Replace affected fan. Go to	X22
	its blades. Verify that fan		step 4.
	blades spin smoothly without
	interference from fan housing.

2010-08-03 Mac mini (Late 2009) Symptom Charts — Mechanical  85