OKIDATA OL400e Series, Service Manual

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Service Manual for OL400e/OL410e/OL410e-PS
Chapter 2 Principles of Operation
2.5.01 Paper Jam Detection
Paper jam detection monitors the location of paper when the printer is powered ON and during
printing. If any of the following jams are present, the printing process is interrupted and the
message PAPER JAM will be displayed on the LCD.
To return to the printing process, the paper jam condition MUST be cleared. This is accomplished
by opening the upper cover, clearing the jam, and closing the cover.
Paper Outlet Jam
This jam occurs if the paper does NOT pass over the outlet sensor within a pre-determined period
of time. However, the paper has already passed over the paper sensor.
Paper Size Error
The time interval between when the paper contacts the paper sensor and the outlet sensor
determines which size (length) paper is being used.
This error occurs if the paper size of the loaded paper differs by + 45 mm or more from the paper
size set by the menu.
Cover Open Switch
When the stacker cover is opened, the cover open microswitch on the power supply unit is
deactivated. This disables the + 38 vdc and the high voltage power supply circuit. As a result,
all high voltage outputs are interrupted. At the same time, the CVOPN signal is sent to the
main control board to notify it of the OFF state of the microswitch. The main control board
executes the cover open routine. The operation panel displays the message COVER OPEN.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
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