Brother DCP-8070D Service Manual page 64

CIS model
The automatic document feeder (ADF) of the CIS model consists of the pick-up roller,
separation roller, paper feed rollers 1/2/3, eject roller, ADF motor, switch back sensor,
document rear sensor, document front sensors 1/2 and document eject sensor.
For further details on the sensors, see
Exit roller
Feed roller 3
Switch back flap A
Feed roller 2
Document hold
CIS unit
Document rear actuator
The duplex scanning mechanism allows you to use the following two types of scanning,
"ADF scanning" and "document glass scanning". These two scanning methods are
switched depending on whether the document front sensor 1 detects the document or not
when starting scanning.
However, in the case of the CCD model, there is the case that the "document glass
scanning" is given priority to over by a state of the document cover sensor (described
later).
ADF cover open actuator
Switch back actuator
Front flap
Feed roller 1
Switch back flap B
Fig. 2-10
2-11
3.6 Sensors position.
ADF cover
Separation flap cam
Separation pad
Document front actuator 1
Feed roller
Document front actuator 2
Separation roller
Nip piece
Switch back roller
Ejection flap
Document eject actuator
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