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1.4.22 Operational Check of Fans (Function code 78)
<Function>
This function is to check whether each of fans is operating correctly or not. The following fans
are checked.
LCD Parts Name Description
FU Fuser unit fan Evacuate hot air of the fuser unit.
OPC Drum unit fan Evacuate hot air of the drum unit drive motor.
PS LVPS fan Evacuate hot air of the LVPS unit.
AIR Air intake fan Intake air to prevent a dirt on the corona wire.
<Operating Procedure>
(1) Press the 7 and 8 buttons in this order in the initial stage of the maintenance mode. The
indication will appear on the LCD as shown in the figure below.
Fig. 5-17
(2) Press the Black Start button so that the LCD indication is changed in the order shown in
the figure above. The fan operation is also changed as indicated on the LCD.
(3) Press the Stop/Exit button so that the machine stops checking the fans, beeps for one
second and returns to the initial stage of the maintenance mode.
Note:
If the air intake fan (AIR) error occurs, the following error message appears on the LCD.
If you press the Stop/Exit button, the machine returns to the initial stage of the maintenance
mode without recovering from this error. To recover from this error, turn the power switch of the
machine off and then turn it on again.
Fig. 5-18