Brother MFC620CN Service Manual page 203

Removing the paper pressure holder and registration sensor actuator
(7) Release the latch provided on the paper pressure holder from the engine unit and remove the
holder to the left and rear. The four paper pressure springs also come off.
Paper pressure holder
Registration
sensor actuator
PF sensor PCB
PF encoder sensor
PF encoder disk
Paper pressure holder
Engine unit
Registration sensor actuator
5-65
Latch
Paper pressure springs
PF sensor PCB
Engine unit
Registration sensor
PF encoder sensor
PF encoder
disk
Registration sensor
and its actuator
Confidential