Brother DCPJ525W Service Manual page 237

(3) On the left end of the lower cover, release the two harnesses (paper feed motor harness and
PF/registration sensor harness ASSY) from the cable guides.
(4) Remove the four screws from the engine unit.
(5) Hold the inner chute located beneath the CR guide rail, lift up the rear end of the engine
unit slightly, and then take it up and out of the lower cover.
Note: Do not hold the CR guide rail.
Note: Take care not to touch the PF encoder disc.
Note: If the ink absorber box does not need to be replaced, be sure to take it out of the
lower cover together with the engine unit. If the main drain tube and air vent tube are
disconnected from the ink absorber box, they are reusable only one time by trimming their
ends vertically 10 mm with scissors clear and free of oil. Check that their cut surfaces are
free of oil. If it is the second time for those tubes to be disconnected, they need to be
replaced.
Note: Do not place the engine unit directly on a flat surface; doing so may break the PF
encoder disc and gears. Be sure to place a support pad under the engine unit as shown
below.
(6) Take the flushing box and ink absorber felt (for maintenance unit) out of the lower cover.
Engine unit
PF encoder disc
Paper feed
motor harness
PF/registration sensor
harness ASSY
Flushing box
(on the disc guide)
Taptite, cup B
M3x10
Link
rod L
Boss
Lower cover
PF encoder disc
Link
rod R
ASF encoder harness
ASF motor harness
Pressure roller release sensor harness
Purge cam switch harness
Carriage motor harness
Ink absorber felt
3-100
Support pad
Engine unit
ASF motor/
encoder harness
ASSY
Boss
(on the disc guide)
Confidential
(3_091)