Oce 3121 Technical & Service Manual page 518

Side guide Slide guide (rear)
Sequence of pick-up (2 size A4 documents, speciality feed)
Multifeeder relay
releasing solenoid (SL3)
Multifeeder pick-up
clutch (CL2)
Pre-registration roller
sensor (PS5)
Registration roller
clutch (CL1)
Main motor (M1)
502 TSM Océ 3121
Variable resistor
Variable resistor
Copy Start Key ON
INTR
Side guide
Slide guide (front)
SCFW SCRV
SCFW
Functional description
Speciality tray
Multifeeder tray