Brother DCP-J552DW Service Manual page 204

(8) Hook the lock arm of the inner chute ASSY from the rear using the spring hook, release the
boss part from the main chassis opening, and remove the inner chute ASSY by sliding it to the
left (to the right when you are looking from the rear) and releasing the seven locks.
Inner chute ASSY
Lock arm boss part
Registration sensor holder
Registration sensor PCB ASSY
Registration sensor
PF/
harness
registration
sensor harness
PF encoder sensor
ASSY
harness
Lock
(Rear)
Lock arm boss
part
Paper feed motor
harness ASSY
3-87
(3_111)
Confidential