Service manual

5-30

Confidential

1.3.17 Check fan operation (function code: 78)

This function is used to check that the fan is operating normally. Switch the setting between

rotation speed 100%, 50%, and OFF.

(1) Press the [▲] or [▼] key in the initial state of maintenance mode to display

"MAINTENANCE 78" on the LCD, and press the [OK] key. "F100" is displayed on the

LCD and the fan rotates at 100% speed.

(2) By pressing the [Go] key, "F50" is displayed on the LCD and the fan rotates at 50%

speed.

(3) By pressing the [Go] key again, "F 0" is displayed on the LCD and the fan stops.

Press and hold the [Go] key, and the machine returns to the initial state of maintenance

mode.

LCD Name Description

F Fan Emits the heat in the fuser unit.