Ricoh SAVIN D0AP Service Manual page 626

Paper Feed
Tray Paper Detection
Paper End/ Paper Near End Detection
When the tray runs out of paper, one end of the paper end feeler [A] drops through the cut out
on the bottom plate into the gap while the other end of the feeler pops up into the paper end
sensor (S6) [B] and turns it off. When paper end is detected, the paper out message is
displayed on the operation panel.
This machine is provided with a new paper near-end sensor (S4).
A paper near-end feeler [C], installed on the corner of the bottom plate, detects the bottom plate
as it rises. As sheets of paper feed out, the bottom plate rises. This also raises the feeler of the
paper near-end sensor (S4) [D] until it blocks the gap of the sensor and switches it off. Paper
near-end is detected when there are about 75±50 sheets of paper (0.1 mm thick) remaining in
the tray. When paper near-end is detected, the operation panel displays the paper near-end
message.
If paper end is detected before paper near-end, paper end takes precedence.
Paper Size Detection
When the paper tray is set in the machine, the paper size dial [A] installed on the right corner of
the of the tray pushes onto the three grooves of the paper size switch (SW4) [B]. This sets the
reading for the dial paper size setting. When more than one of these switches are set to "L"
(ON") the machine knows the paper tray is installed.
D0AP/D0C4/D0C5/D0C6/M0BQ/M0D1 7-64 SM