Ricoh DD 5450, Руководство по обслуживанию на месте, Страница: 158 / 403

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Chapter 3 Paper Ejection Section
1. Paper Jam Detection Timing
Description
Paper jamming is divided into three types : "PAPER JAM ON EJECTION SIDE", "PAPER JAM IN
DRUM SECTION" and "PAPER JAM ON FEEDER SIDE". Paper jamming is detected under the
following conditions. When paper jamming is detected, "PAPER JAM" is displayed on the LCD
panel, and the machine stops printing operation. The display is cleared by removing the cause of
paper jam and pressing the STOP key or by restarting printing.
"PAPER JAM ON EJECTION SIDE" is displayed.
JAM1: Paper trailing edge is not ejected.
When the software detects a certain angle from the drum stop position and at that timing
the paper eject jam sensor does not detect the reflected light.
JAM2: Paper lead edge is not ejected.
When the paper eject jam sensor never detects the reflected light while the drum rotates
by a certain angle from the drum stop position.
JAM (during stop): When the paper eject jam sensor detects the reflected light during machine
stop. If the sensor does not detect the reflected light, the display is cancelled.
"PAPER JAM IN DRUM SECTION" is displayed.
JAM: The paper at the signal sensor section is not ejected.
When the "paper top detect sensor" and the "paper eject jam sensor" do not detect the
reflected light, and only the "signal sensor" detects the reflected light, JAM is detected.
"PAPER JAM ON FEEDER SIDE" is displayed.
JAM3: During paper feed operation, the paper does not pass through the signal sensor.
If the paper does not pass through the paper top detect sensor during two rotations of
the drum after the paper feed command is given during printing, JAM is detected.
Paper eject jam sensor
Press roller sensor
Drum position-1 sensor
Master pre-detach
position edge
Drum position-2 sensor
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