R510 G7 How to locate the faulty fan?

Failure phenomenon:

R510g7 appear similar to the alarm sound of ambulances, and alarm lights red light alarm, the boot will appear fan 2-1failure prompts, the system runs normally, observe fan speed normal, door-to-door replacement motherboard failure can not be excluded, the final judgement for fan failure. How do I locate the faulty fan?

Reason Analysis:

Since the R510g7 fan has two fan groups consisting of two fans, if only one of the fans in the fan group fails to turn, a normal fan will cause the fan to rotate, and the eye will see that the fans are good and the R510g7 fan 2-1 is the most vulnerable. This is easily judged as a failure of the motherboard in the case of an ambulance-like alarm sound.

Solution:

This fault is more fan fault, we boot press del key into the BIOS, select Advanced-hareware Health Configuration, as shown in the following figure, this option can view fan speed, if the fan with a speed of 0, you can be judged as a fan problem, Then follow the knowledge number 052447 to determine which fan is faulted.