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2.3 Using the CPU Fan Protection Function
The CPU must be kept cool by using a CPU fan with heatsink.
Without sufficient air circulation across the CPU and heatsink, the
CPU will overheat damaging both the CPU and system board.
The CPU Fan Protection function supported by the system board
has the capability of monitoring the CPU fan during system boot-up
and will automatically power-off the system once it has detected that
the CPU fan did not rotate. This preventive measure has been
added to protect the CPU from damage and insure a safe
computing environment.
To use the CPU Fan Protection function, please follow the steps
below.
1. Before you power-on the system, make sure the heatsink and
CPU fan are correctly installed onto the CPU. The system is
capable of monitoring the CPU fan, therefore you must use a fan
with sense pin to suppor t this function. Connect the CPU fan to
the 3-pin fan connector at location J16 on the system board.
2. Make sure the “CPU Fan Protection” field in the PC Health
Status submenu of the BIOS is set to “Enabled”.
3. You may now power-on the system.
Two circumstances may occur causing the system to power-off
automatically. A beeping alarm will sound before the system will
power-off.
1. The CPU fan did not rotate because the CPU fan is damaged.
When you boot-up the system and the CPU fan did not rotate,
it may indicate that the fan is damaged. Replace it with a new
fan.
2. The CPU fan did not rotate immediately upon system boot-up
or it took some time before the CPU fan rotated.
If the CPU fan did not rotate immediately upon system boot-up
or it took some time before the fan rotated, check whether the
heatsink and fan are mounted properly onto the CPU then
