Oce 3121 Technical & Service Manual page 361

Remove the spring (16).
10
Remove the screw (18), and remove the sensor cover (17).
11
Then, disconnect the sensor connector (19).
Remove the registration sensor (20): pulling it upwards.
426 TSM Océ 3121
(16)
!6
(20)
(19)
(18)
(17)
Dis-/assembly