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Back panel (Cooling fan)
First, unplug the Power cord plug from the wall outlet.
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Back panel (Cooling fan)
The main unit is equipped with a cooling fan on the back side. To remove dust
or other foreign materials adhering to the fan, vacuum it attaching lightly the
opening of the suction nozzle of a vacuum cleaner to the vent holes.
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Be extremely careful not to damage the display panel or other parts.