Toshiba e-STUDIO163, Service Manual

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© 2005 - 2008 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO163/203
PAPER FEEDING SYSTEM
10 - 9
10.4.3 General operation
[A] From power ON to standby status
• If the drawer is not completely inserted when the equipment is turned ON, it is judged by the drawer
detection switch (SW5) that the drawer has not been inserted. Paper detection in the drawer cannot
be performed unless the drawer is fully inserted.
• When the equipment is turned ON, if the paper empty sensor (S7) is turned OFF (L), it is judged that
there is no paper in the drawer. With the sensor (S7) being ON (H), it is judged that there is paper in
the drawer.
• If either of the sensors; registration sensor (S4) or exit sensor (S5) is ON (meaning there is paper on
the transport path) when the equipment is turned ON, it is determined that a paper jam has occurred
and no operation is enabled until the jammed paper is removed.
[B] Standby status
• After the availability of paper is checked as described above, the equipment enters the standby
state.
[C] Drawer feeding
• When the pickup solenoid (SOL1) is turned ON, the driving force of the main motor (M3) is transmit-
ted to the drawer pickup clutch to rotate the pickup roller one turn. Then, a sheet of paper is fed and
transported to the registration roller.
• The leading edge of the paper turns ON the registration sensor (S4), and then the paper stops at the
registration roller.
• The registration clutch (CLT1) is turned ON and the paper aligned by the registration roller is trans-
ported to the transfer unit.
[D] Bypass feeding
• The bypass sensor (S8) detects the availability of paper.
• When the bypass pickup solenoid (SOL2) is turned ON, the bypass pickup clutch arm and bypass
feed clutch arm are pulled away from each clutch.
• The driving force of the main motor (M3) is transmitted to the bypass pickup clutch and bypass feed
clutch to rotate the bypass pickup roller and bypass feed roller. At this time, the bypass pickup roller
rotates and goes down simultaneously.
• Feeding starts and a sheet of paper is transported to the registration roller. The leading edge of the
paper turns ON the registration sensor (S4), and then the paper stops at the registration roller.
• The bypass pickup solenoid (SOL2) is turned OFF, and the bypass pickup clutch arm and bypass
feed clutch arm come in contact with each clutch. The drive for the bypass pickup roller and bypass
feed roller is cut off, and the bypass pickup roller unit is lifted up.
• The registration clutch (CLT1) is turned ON and the paper aligned by the registration roller is trans-
ported to the transfer unit.