Brother MFC5490CN Service Manual page 220

(20) At the left end of the engine unit, remove the screw that secures the PF encoder PCB and its
support to the engine unit, taking care not to touch the PF encoder disk (if it has not been
removed in Section
(21) If the PF encoder disk needs to be replaced, peel it off from the PF roller gear L.
Note: Once removed, the PF encoder disk will become unusable and a new disk will have
to be put back in.
Note: Remove any adhesive remaining left on the PF roller gear L.
Assembling Note: When attaching the PF encoder disk to the PF roller gear L, using a
spatular tool makes the job easier. Put on clean gloves to protect the disk surface from dust
or fingerprints.
Paper feed
motor harness
Encoder PCB support
PF encoder PCB
Screw, bind
M2x12
6.1.12).
Paper feed roller
CR guide rail
PF roller
gear L
PF encoder
wires
PF encoder disk
6-70
Engine unit
Ejection idle gear
(6_83)
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