Toshiba 4560, Service Manual

Page: 105 / 369

4560/4570 FEEDER 8 - 6 Nov. 1997 © TOSHIBA
8.2 Cassette Feeding Operations
8.2.1 Operation explanation
[A] From power-on until standby status
(1) When the power is turned ON for the copier, the tray motor (M14) is set to ON and the lower tray
star ts to rise. When the tray is raised, the tray-up switche (S29) is turned ON (L H), and the tray
motor (M14) is turned OFF, which stops the upward motion of the tray. At this point, if the empty
switche (S14) is OFF (L), it is determined that there is no paper present. If the empty switche is ON (H),
it is determined that paper is present. The tray stops in its raised position regardless of whether there
is paper or not.
(2) If the power is turned ON when the cassette has been removed, the tray motor for that level does not
come ON. When the cassette is inserted in the slot, the tray is raised and the presence or absence of
paper is determined.
(3) If either of the paper stop switches (S7/16) or the aligning switch (S8) is ON (because there is paper
in the paper path) when the power is turned ON, it is determined that a paper jam has occurred and
operation is not possible until the paper is removed.
[B] Standby mode
(1) After the paper supply is checked by the raising of the trays as described above, the standby mode
is obtained. In the standby mode, the trays remain in their raised position.
(2) When the cassette is inserted or removed in the standby mode, the tray is raised again to check the
paper supply.
[C] Manual feeding
• The manual feed switch detects the presence of manual feeding paper.
• The manual solenoid is turned ON, and the pick-up roller and the manual feed roller are rotated.
• The pick-up roller is lowered and paper feeding is started.
• The leading edge of the paper turns ON the paper aligning switch and is aligned at the aligning
roller.
• The manual feed clutch is turned OFF and the pick-up roller and manual feed roller stopped
rotating, and then the pick-up roller is raised.
• The aligning motor is turned ON and the paper is transported to the transfer process.
[D] Cassette feeding (upper or lower)
• The transport motor, the feed clutch and the transport clutch are turned ON, and the feed roller
and the transport roller are rotated, and then paper feeding is started.
• The leading edge of the paper turns ON the paper stop switch and then the feed clutch is turned
OFF.
• The leading edge of the paper turns ON the aligning switch and is aligned at the aligning roller.
• The transport clutch is turned OFF and the transport roller is stopped.
• The aligning motor is turned ON and the paper is transported to the transfer process.