Brother DCPJ525W Service Manual page 248

PF encoder disc, PF encoder sensor PCB ASSY and PF/registration sensor harness ASSY*
(13) If the PF encoder disc needs to be replaced, peel it off from the PF roller gear L.
Note: Once removed, the PF encoder disc will become unusable and a new disc will have
to be put back in.
Note: Remove any adhesive remaining left on the PF roller gear L.
(14) Remove the screw and take the PF encoder sensor PCB ASSY off the engine unit.
If the PF encoder sensor harness has not been disconnected from the PCB in step (10)
above, disconnect it to completely separate the ASSY from the engine unit.
Encoder PCB support
PF encoder sensor
PCB ASSY
Screw, bind
M2x12
(Left)
PF encoder disc
Assembling Note: When attaching the PF encoder disc to the PF roller gear L, using a spatular
tool makes the job easier. Put on clean gloves to protect the disc surface from dust or
fingerprints.
* The PF/registration sensor harness ASSY consists of a PF encoder
sensor harness and registration sensor harness.
Engine unit
Cutout
Paper feed motor harness
PF encoder sensor harness
(Part of PF/registration
sensor harness ASSY)
3-111
PF roller gear L
(3_106)
Confidential