Read Sharp AR-810 (serv.man24) Service Manual online
AR-651/810 PAPER FEEDING SECTION 9 - 6
9. 3. 4. General operation
[A] From power ON to standby status
(1) When the copier is turned ON, the tray-up motor is activated and the 1st cassette tray starts to rise.
When the tray-up sensor is turned ON (H
촞
L), the tray-up motor is turned OFF and the tray is stopped.
At this time, if the empty sensor is OFF (L), it is judged that there is no paper in the cassette. With the
empty sensor being ON (H), there is paper in the cassette. The tray stops at the raised position
regardless of availabilty of paper.
Then the tray-up motor starts to rotate in the reverse direction and 2nd cassette starts to be lifted. The
2nd cassette tray is stopped in the same manner as the 1st cassette tray and the empty sensor
detects if there is paper in the cassette.
(2) If the cassette is not completely inserted when the copier is turned ON, the tray for that cassette is not
raised. When the cassette is inserted completely, the tray is raised and checked for the availability of
paper.
(3) If either of the sensors at the transport path are ON (meaning there is paper on the transport path) when
the copier is turned ON, it is determined that a paper jam has occurred and paper lift operation is
disabled until after the jamed paper is removed.
[B] Standby status
(1) After the tray is moved up and availability of paper is checked as described above, the copier enters
the standby state. In the standby mode, the tray remains at the raised position.
(2) When a cassette is inserted or removed in the standby state, the tray is raised again to check the
availability of paper.
[C] Bypass feeding
•
The bypass sensor detects the availability of paper.
•
The bypass feed clutch is turned ON and the bypass pickup roller and bypass feed roller rotate.
•
The bypass pickup solenoid is turned ON and the bypass pickup roller is lowered to start feeding.
•
The leading edge of the paper turns ON the registration sensor and the paper is aligned with the
registration roller.
•
The bypass feed clutch is turned OFF and the bypass pickup roller and the bypass feed roller are
stopped, and then the bypass pickup roller is raised.
•
The registration motor is turned ON and paper is transported to the transfer unit.
[D] Cassette feeding
•
The feed clutch is turned ON and the pickup roller and feed roller rotate to start feeding.
•
The leading edge of paper turns ON the transport sensor, then the feed clutch is turned OFF and
the transport clutch is turned ON.
•
The leading edge of paper turns ON the registration sensor and paper is aligned with the registration
roller.
•
The transport clutch is turned OFF and the transport roller is stopped.
•
The registration motor and transport clutch are turned ON and paper is transported to the transfer unit.
Click on the first or last page to see other AR-810 (serv.man24) service manuals if exist.