"Micro Cooling Fan" air convection occurs when the job to the notebook cooling together, but also the dust in the air to remain in personal appearance and vents near, not only affects the cooling effect and increases the cooling fan of the load together, but also changed air convection environment, leading to the occurrence of noise. This representation if timely dust, the impact will not occur on the part; if not timely removal, over time will lead to "Micro Cooling Fan" axis wear occur overnight will incur a fan blade shaft wear occur overnight will incur a fan blade fan shaft wear occurs overnight will lead to the occurrence of a fan blade shaft wear "eccentric", this noise this noise this noise this noise, just replace the "Micro Cooling Fan" talent deal with the problem.