Brother DCP-J552DW Service Manual page 173

(20) Remove the document scanning position sensor holder ASSY from document feed roller 1 and 2.
(21) Remove document feed roller 1 and 2 by pulling them away from bearings from then remove it
from the ADF unit.
(22) Remove the three pinch rollers from the ADF unit.
Document scanning position sensor
holder ASSY
Document feed roller 1
(Right)
(Rear)
(23) Turn the ADF unit upside down then press the ADF unit hook. Remove the LF1 support plate
by sliding it to the rear.
(24) Release the 2 tabs of the document separate roller ASSY and remove it from the ADF unit.
Document separate roller ASSY
ADF unit
Assembling Note Before installing the document separate roller ASSY to the ADF unit, refer to
Section 5 in this chapter and apply the specified lubricant to all roller shafts.
Tab
(Rear)
3-56
Bearing
Document feed roller 2
Pinch roller
ADF unit
LF1 support plate
Release the hook
Confidential
(3_077)
(3_121)