Brother MFC-8480DN - 8 Dialing and Storing Numbers

2-10
Confidential
3. Function of each motor/solenoid
-ADF motor
Driving source of overall ADF.
- Paper feed solenoid
The paper feed solenoid disable pick-up roller and separation roller while the machine
is taking action scanning to prevent the next document from being drawn into the ADF.
- Switch back solenoid
Switches the direction of rotation of the switch back roller ASSY.
- Document eject sensor (CIS model)
When the duplex scanning, detects whether the document is ejected.
4. Internal structure
 CCD model
The automatic document feeder (ADF) of the CCD model consists of the pick-up roller,
separation roller, paper feed rollers 1/2/3/4, eject roller, ADF motor, switch back sensor,
document rear sensor and document front sensors 1/2.
For further details on the sensors, see 3.6 Sensors position.
Fig. 2-9
Switch back sensor
Paper feed roller 2
Document rear
sensor actuator
Paper feed roller 3
Document rear sensor
Switch back
sensor actuator
Paper feed roller 4
Flap A
Document front sensor 2
Eject roller
Document front
sensor actuator 2
Document front
sensor 1
Document front
sensor actuator 1
Pick-up roller
Separation roller
Paper feed roller 1
Switch back
roller ASSY
Flap C
Flap B