Brother DCP-9010CN Service Manual page 64

(4) Internal structure
The automatic document feeder (ADF) consists of the separation roller shaft ASSY, paper
feed roller, ejection roller, ADF motor, document rear sensor, document front sensor and
ADF cover open sensor.
For further details on the sensors, refer to
Separation pad
Pressure roller
Paper feed roller
Pressure roller
Document rear actuator
Document rear sensor
In this reading system, "copyboard glass scanning" and "ADF scanning" are available.
These scanning types are switched based on whether or not the document front sensor
detects any document at the time when the scanning operation starts.
(5) ADF scanning (The document moves over the immovable CIS unit.)
1) Set the document face up into the document chute. When the machine starts simplex
scanning, the ADF motor is rotated clockwise, the suction roller draws the document,
and the separation roller and separation pad send a sheet of the document to the ADF
one by one from the top page of the stacked documents.
2) The document is passed through the paper feed roller, and is passed over the CIS
unit so that the document is scanned. Then, the document is ejected to the document
cover by the ejection roller.
Separation roller shaft ASSY
Separation roller
Pressure roller
Paper feed roller
Pressure roller
Separation roller shaft ASSY
Separation roller
ADF cover open sensor
Fig. 2-7
Ejection roller
Suction roller
Separation pad
CIS unit
Fig. 2-8
2-9
"3.7 Location of Sensors" in this
Suction roller
Document front sensor
Document front actuator
Paper feed chute ASSY
Pressure roller
chapter.
Ejection roller
Pressure roller
Document cover
Confidential