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3. GENERAL OPERATION
3. 1 Description of Operation
[A] From power ON to standby
(1) When the copier is turned ON, power is also supplied to the feed unit from the copier to start the pre-
running operation. The tray motor (M2) starts to rotate forward to lift the tray.
The tray motor (M2) stopped rotating and lifting the tray when the tray has been lifted and the tray-up
sensor (S2) has been turned ON (H: Sensor light path blocked by the actuator sensor). Papers are
assessed to be present when the empty sensor (S1) is turned ON (L:Passing the sensor light path )
while they are assessed to be absent when the empty sensor (S1) is turned OFF (H: Sensor light path
blocked).
(2) When the LCF is not being installed to the copier (LCF set sensor (S7): OFF) or when the drawer is
being pulled out (Tray sensor (S5): OFF), the tray lifting operation is not carried out. In this case, the
tray starts to be lifted and the same operation which is until the detection of the paper presense or
absense is carried out when it is installed to the copier and the drawer is inserted.
(3) When the feed sensor (S3) is turned ON (L: Passing the sensor light path), that is, when the paper is
remaining at the transport path, the LCF detects it as a paper jam and cannot operate.
[B] Standby state
(1) When a paper is detected to be present by the above-described operation, the LCF gets into a standby
state.
(2) When the tray unit is pulled out, the tray is automatically lowered because of its structure, and when it
is inserted once again, it is lifted.
[C] Feeding/Transporting operation from the start to the finish of the printing
(1) The [START] key is pressed when the copier decides that the feeding from the the LCF. Then, the
transport motor (M1) starts to drive after the feed motor of the copier has been turned ON.
(2) The feed clutch (CL2) is turned ON and pickup and feed rollers start to drive to feed a paper from the
tray.
(3) After the feeding starts, the transport clutch (CL1) is turned ON and the transport roller starts to drive
to transport the paper.
(4) When the leading edge of the paper has turned ON the feed sensor (S3), the feed clutch (CL2) is turned
OFF and stops the feeding operation. The paper transported by the transport roller is sent to the copier
side, where it is transported by the feed unit.
(5) When a specified time has passed after the trailing edge of the paper turned OFF the feed sensor (S3),
next paper can be fed.
(6) When carrying out a continuous printing, the above steps from (2) to (5) are repeated as many papers
as printed.
(7) When the printing has been finished, the feed motor of the copier stops rotating and the transport motor
(M1) is turned OFF to finish the feeding/transporting operation.
JUNE 2002 © TOSHIBA TEC
3 - 1
MP-4003 GENERAL OPERATION
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