Toshiba 4560, Service Manual

Page: 194 / 369

Nov. 1997 © TOSHIBA 13 - 27 4560/4570 ADU
13.8 Description of Operation
13.8.1 General operation
(1) Initializing
When the power switch is turned ON or when the front cover is opened/closed or when the ADU is
pulled out/pushed in, this operation is performed.
(2) Stacking operation
This is an operation in which sheets of paper fed from the cassette and copied on their surface (first
side) are sent into the ADU stack section and stacked there.
(3) Duplex copying
Sheets of paper which have been copied on their first sides are automatically sent into the copier and
copied on their reverse surface (second side).
(4) ADU paper feeding
This operation causes sheets of paper to be fed from the ADU into the copier.
13.8.2 Description of each operation
[A] Initializing
[A-1] Initializing when the power switch is turned ON
(1) When the power switch is turned ON, the end motor (END-MOT) DM2 rotates to move the end
guide in the stack section to its home position.
(2) The side motor (SID-MOT) DM3 rotates to move the side guides to their home position.
[A-2] Initializing when the copier’s front cover is opened/closed
(1) The operation in step (1) above is performed.
[A-3] Initializing when the ADU is pulled out/pushed in
(1) The end motor (END-MOT) DM2 rotates to move the end guide to its home position once, then
moves it to the position corresponding to the selected size of paper.
(2) The side motor (SID-MOT) DM3 rotates to move the side guides to their home position once,
then moves them to the position corresponding to the selected size of paper.
[B] Stacking operation
(1) When the PRINT key is pressed, the SID-MOT DM3 and END-MOT DM2 are rotated to
move the side and end guides to the position corresponding to the specified size of paper, and
the ADU-MOT DM1 is rotated clockwise to transport the paper. STSOL ( ) is en-
ergized to position the EXIT/ADU selection gate in the direction of stacking, and STCLT CLT2
is energized to rotate the ADU transport rollers in the direction of stacking.
(2) Jam detection inside the ADU is performed as follows:
JAM-SW SA4 is checked if it is turned ON within a specified period of time after the copied
paper turned ON the copier’s exit switch. The switch is also checked if it is turned OFF within a
specified period of time after the exit switch was turned OFF by the paper.
SOL 1