Gestetner A193 Service Manual page 523

DETAILED SECTION DESCRIPTIONS
3.3 PAPER NEAR-END/END DETECTION
[G]
[F]
[E]
[A]
[B]
[C]
[D]
[H]
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This LCT can detect four paper near-end condition levels (75%, 50%, 25%
and Near End) and the paper end condition.
NOTE: The number of paper near-end detection levels actually used
depends on the main machine.
The paper near-end condition is detected by three near-end sensors [A, B,
and C] and the actuator [D] attached to the bottom plate. The elevation of the
bottom plate varies with the amount of the paper remaining in the LCT. The
actuator enters and leaves the sensors as the bottom plate moves up and
down.
When the LCT runs out of paper, the paper end feeler [E] drops into the
cutout [F] in the tray bottom plate and the paper end sensor [G] is activated.
When a paper end condition occurs, the tray lift motor will lower the bottom
plate. When the lower limit sensor [H] is activated by the bottom plate, the
tray lift motor will stop.
A224 14-8 SM