Toshiba e-studio550 Service Manual page 131

(E-2) Standby status
(1) Trays detect the paper as described above, and the copier goes into the standby status.
(2) The tray goes down automatically when the tray unit is removed and is raised as soon as the tray unit
is reinstalled it then checks if there is paper in the tray.
(E-3) From the start to the end of copying
(1) The drum motor of the copier is turned ON when the [START] key is pressed. The transport motor is
turned ON to drive.
(2) When the copier judges that the tandem LCF is ready for feeding paper, it turns ON the tandem LCF
feed clutch of the selected tray. This clutch drives the pickup roller and feed roller to feed paper from
the tray.
(3) In a specified time after the feeding has started, the tandem LCF transport clutch is turned ON to drive
the transport roller.
(4) The leading edge of the paper turns the feed sensor ON. These are located right next to the exit side of
the selected tray. The tandem LCF feed clutch is turned OFF and feeding from the tray is completed.
(5) The paper is transported to the copier by the tandem LCF transport roller. If the trailing edge of the
previously sent sheet still remains at the feed sensor when the leading edge of the paper reaches the
feed sensor, the tandem LCF transport clutch is turned OFF to stop the transport of the paper.
(6) The trailing edge of the paper turns the feed sensor OFF. These are located right next to the exit side of
the selected tray. The tandem LCF then becomes ready for feeding the next sheet of paper, and the
procedures (2) to (5) are repeated.
(7) When the copying operation is completed, the drum motor, the tandem LCF transport motor and transport
clutch are turned OFF and the transport roller is stopped.
(E-4) Error detection
a) Jam detection
(1) A paper jam occurs in the following cases.
a. Feed sensor is not turned ON within a specified time after the feeding has started.
b. The leading edge of the paper does not pass the feed sensor in the transport path within a fixed
time.
(2) Open the feed side lower cover and remove all the paper remaining on the transport path and close the
cover to clear the jammed paper. If either of the feed sensors is still ON when the cover is closed, it is
determined that there is still paper on the transport path and the paper jam status is not canceled.
(3) When a paper jam occurs in the paper feeder during multiple copying, the sheet that was fed before the
jam is copied normally.
e-STUDIO550/650/810 PAPER FEEDING SYSTEM 9 - 8 JUNE 2002 © TOSHIBA TEC