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Confidential
1.3.26 Check main fan operation (function code: 78)
<Function>
This function is used to check that the main fan is operating normally. Switch the setting
among rotation speed 100%, 50%, and OFF.
<Operating Procedure>
(1) Press the [7], and then the [8] key in the initial state of maintenance mode. "F100" is
displayed on the LCD and the main fan rotates at 100% speed.
(2) By pressing the [Mono Start] key, "F50" is displayed on the LCD and the main fan rotates
at 50% speed.
(3) By pressing the [Mono Start] key, "F 0" is displayed on the LCD and the main fan stops.
(4) When you press the [X] key, this operation is finished and the machine returns to the
initial state of maintenance mode.
LCD Name Description
F Main fan Emits the heat in the fuser unit.
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