Open the "Micro Cooling Fan" Power to the shell, remove the fan, the fan blades to find the location of the dust gathering place, with a soft brush to clean up the place clean. After the cleanup is complete, the cooling fan in the middle usually appear positively label, the label opened see "Micro Cooling Fan" to bearing point with a toothpick dipped in the lubricant in the bearing, the oil should be appropriate attention. After completion of the label stick back, prevent dust from entering, and then cooling fans and power supply can be restored. For "Micro Cooling Fan" not free to use oil when oiling, the poor land lubricating oil will not help, but will make bearing accelerated wear, Men should select specific products may be able to use high-quality sewing machine oil instead.