Brother DCP-8070D Service Manual page 63

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
Switch back sensor
Paper feed roller 2
Document rear
sensor actuator
Paper feed roller 3
Document rear sensor
Flap C
Flap B
Switch back
Paper feed roller 4
sensor actuator
Fig. 2-9
2-10
3.6 Sensors position.
Paper feed roller 1
Switch back
Separation roller
roller ASSY
Document front sensor 2
Flap A
Pick-up roller
Document front
sensor actuator 1
Document front
sensor 1
Document front
sensor actuator 2
Eject roller
Confidential