S6900 fan speed abnormality

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There are multiple switches at the customer site. 

The customer has feedback that the fan speed of one switch is abnormal and the fan speed of the rest of the switches are normal.

We checked the fanstatus, the results are as follows：

Abnormal one：

[-probe]fancontrol fanstatus

Now soft control fanspeed

Fan 1 Speed is 4f

Fan 2 Speed is 4f

Fan 3 Speed is 4f

Normal one:

[-probe]fancontrol fanstatus

Now soft control fanspeed

Fan 1 Speed is 61

Fan 2 Speed is 61

Fan 3 Speed is 61

Fan has 10 speed types 

Their Logic values are as follows：

UCHAR g_ucFanPwm[10]={0x13, 0x27, 0x3a, 0x4e, 0x61, 0x74, 0x88, 0x9b, 0xae, 0xc2}; 

Which correspond to fan speeds of 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, respectively. 

The abnormal one is 0x4f，which means the fan speed is more than 40% 

The fan speed will be adjusted according to the device temperature and optical module temperature.

It is normal they have different temperature