Toshiba e-STUDIO350, Service Manual, Page: 157 / 286

November 2003 © TOSHIBA TEC 9 - 7 e-STUDIO350/450 PAPER FEEDING SYSTEM
9
9.2.4 General operation
[A] From power-ON to ready status
(1) When the equipment is turned ON, the tray-up motor starts to rotate forward and the upper drawer
tray starts to rise. When the tray has risen and the tray-up sensor is turned ON (L
→
H), the tray-up
motor is turned OFF, then the tray stops to rising. At this time, if the empty sensor is OFF (L), it is
judged that there is no paper in the drawer. If the empty sensor is ON (H), there is paper in the
drawer. The tray stops at raised position regardless of the presence/absence of paper.
The tray-up motor then starts to rotate in reverse and the lower drawer tray starts to rise. The lower
drawer tray is stopped in the same manner as the upper drawer tray, and the empty sensor detects
if there is paper in the drawer.
(2) If the drawer is not completely inserted when the equipment is turned ON, the tray in that drawer
does not rise. When the drawer is inserted completely, the tray is raised and checks the presence/
absence of paper.
(3) If either of the feed sensors is ON (= there is paper on the transport path) at power-ON, it is deter-
mined that a paper jam has occurred and no operation is enabled until the jammed paper is re-
moved.
[B] Ready status
(1) After the tray is moved up to check the presence/absence of paper as described above, the equip-
ment enters the ready state. During the ready mode, the tray stays at the raised position.
(2) When a drawer is inserted or removed in the ready state, the tray is raised again and checks the
presence/absence of paper.
[C] Bypass feeding
• The bypass paper sensor detects paper in the bypass tray.
• The bypass pickup roller is lowered when the bypass pickup solenoid is turned ON.
• The bypass feed clutch is turned ON, and then the bypass pickup roller and bypass feed roller
are rotated.
• Paper feeding is started and the bypass feed sensor detects the passing of paper.
• The leading edge of paper turns the registration sensor ON and the paper is aligned by the
registration rollers.
• The bypass feed clutch is turned OFF, causing the bypass pickup roller and bypass feed roller to
stop rotating.
• The bypass pickup solenoid is turned OFF, and the bypass pickup roller moves up.
• The registration clutch is turned ON, and the paper is transported to the transfer unit.