- Jul 26, 2012
When i boot my iMac 27 2009 the cpu fan run full speed i get 0 rpm in stat after i run the hardware test i get this: 4MOT/4/40000002:CPU-0 anyone knows what is it?
Thanks for the info any chance that logic board cpu sensor or fan circuit damaged?4MOT/4/40000002 :CPU-xxx
CPU fan/blower, located next to left speaker (logic board has to be removed to replace CPU blower)
Verify that the CPUblower/ fan cable is securely connected to the left side of the logic board and that there are no obstructions that would prevent the blower/fan from rotating. Replace fan if the error continues.
Normal fan operation, except the CPU blower
Note: Make sure black mylar tape along the bottom of LCD panel is not obstructing fan blades, if so, cut tape and re-stick to LCD.