Oce 3121 Technical & Service Manual page 409

2) Changing between copier mode and fax mode.
Motor M1 switches the document feed unit to suit the application mode. When
M1 rotates clockwise, the feed unit moves to copier mode. When M1 rotates
counter-clockwise, the feed unit moves to fax mode.
When M1 rotates clockwise, the arm on the pick-up roller actuates the switch-
ing arm. The original guide is raised. The outer groups of separation belts
move downwards. The feed unit is in copier mode.
When M1 rotates counter-clockwise, the arm on the pick-up roller actuates the
switching arm. The original guide is lowered. The outer groups of separation
belts move upwards. The feed unit is in fax mode.
Original guide
Original guide
Separation belt
Separation belts
(copier mode)
Separation belt
Separation belts
(fax mode)
3)Pick-up: copier mode
3a) Operation
The following occurs when the documents have been placed in the tray, and the
copy button is pressed:
528 TSM Océ 3121
RDF control PBA
RDF controller PCB
Switching Arm
Switching
Arm
Arm
arm
RDF control PBA
RDF controller PCB
Original guide
Original guide
Switching
Switching
Arm
Arm
Arm
arm
Pick-up motor (M1)
Pick-up motor
(M1)
M1
Pick-up motor (M1)
Pick-up motor
(M1)
M1
Functional description