Oce 3121 Technical & Service Manual page 493

d) Detection of 'cassette is empty'
When the last sheet leaves the cassette, the detect lever drops through the slot
in the cassette. The vane on the detect lever interrupts the sensor (Q1604 for
the upper cassette, and Q1605 for the lower cassette). The ' no paper ' message
is displayed.
Cassette in the stand-by situation
The following occurs when the cassette is removed or replaced.
With the ramp up, and the shaft of the pick-up roller down
1
a) Shaft of the pick-up roller is down
When the cassette is inserted, and the machine is ON, the shaft of the pick-up
roller will be lowered until it reaches the paper.
The rear of the cassette pushes lever 1 upwards.
I
The motor M1, and the pick-up solenoid SL2 are switched on, following the
I
signal from the size sensor. The trigger turns.
The position of the shaft of the pick-up roller is controlled by the lever 1 and
I
the trigger.
512 TSM Océ 3121
The upper cassette
The lower cassette
detect lever
Functional description