Brother DCP-J552DW Service Manual page 194

(3) On the right side of the lower cover, remove the five harnesses connected to the engine unit
from the cable guide.
Lower cover
Speaker harness
Carriage motor
(Right)
Carriage motor harness
3-77
ASF motor
ASF motor/encoder PCB
ASF encoder disk
ASF motor harness
Pressure roller release
sensor harness
ASF encoder sensor
harness
Ferrite core of ASF
motor harness
Purge cam switch harness
(3_101)
Confidential