Name: Brother MFC-8480DN - B/W Laser - All-in-One
Brand: Brother
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Confidential

4.20 Operational Check of Fans (Function code 78)

This function is to check whether each of fans is operating correctly or not. The following fans

are checked.

(1) Press the [7] and [8] keys 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. 7-18

(2) Press the [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.

Fig. 7-19

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.

FAN: 100%

FAN: 50%

FAN: OFF

Machine Error 2B

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