Brother DCP-9055CDN Service Manual page 265

(4) Lift the film, and then push and open the Rib to remove the Document second side rear
sensor from the Lower document chute.
Lower document chute
Document first side rear sensor
(5) Disconnect the Connector from the Document second side rear sensor.
Document second side rear sensor
(6) Disconnect the Connector from the Document first side rear sensor in the same way.
Rib
Document second
side rear sensor
Film
Fig. 3-102
Fig. 3-103
3-84
4a
4a
4b
Document second side
rear sensor
Connector
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