Apple Mac mini Manual De Usuario

Mac mini (Late 2009) Symptom Charts — Mechanical 

2010-08-03

System Runs Hot
•  System feels very hot
•  Fan not operating
•  Fan running fast
•  System is noisy

1.  Verify that the vents on the bottom are free of 

dust and other obstructions that might inhibit 

proper airflow through the system. 

2.  Verify that the computer is not exposed to 

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. 

1.  Run latest available service 

utilities for thermal sensor or 

fan functional state. Was an 

error generated?

Yes

Suspect possible fan or 

sensor error. Check fan 

cable connection to the 

interconnect board.

No

Go to step 2.

2.  Does noise sound like fan is 

running faster than expected?

Yes

Fan running fast. Reset SMC 

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, 

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.

Yes

Fan reseated, blades rotate.

No

Replace affected fan. Go to 

step 4.