Sharp AR-810 (serv.man20) Service Manual ▷ View online
AR-651/810 RADF (DOCUMENT FEEDER) 16 - 25
(9) Reversing and discharging of 1st original
Both the large original exit and read motors start to rotate foward. When the leading edge of the original
has reached the read sensor then been transported a specified distance by the read motor, the
disengagement solenoid turns ON. The large original exit motor stops when the disengagement solenoid
has turned ON.
When the leading edge of the original has been transported to the large original exit and reached the 3rd
roller, and the large original exit motor starts to rotate in reverse.
Feeding of 2nd original begins when the trailing edge of the original has passed the 4th roller.(Same
operation as 16.5.1(4))
When the trailing edge of the original has passed the 4th roller and proceeded a specified distance, the
large original exit motor starts to slow down. When the trailing edge of the original has been detected by
the large original exit sensor and proceeded a specified distance, it stops rotating. Then the original is
discharged.
Both the read and feed motors stop rotating when 2nd original has reached the scanning waiting posi-
tion.
AR-651/810 RADF (DOCUMENT FEEDER) 16 - 26
(10) Start of 2nd original top side scanning
Scanning begins after receiving the original transport signal from the copier. At the same time the
original stop signal is reset. When the read motor starts to rotate forward, the feed motor also starts to
rotate in reverse. (The large original exit solenoid has been ON from 1st original.)
The SCN-STR turns ON when the leading edge of the original has reached the scanning section.
The large original exit motor starts to rotate in reverse when the leading edge of the original has been
transported to the large original exit side and come to the 3rd roller.
When the registration sensor has detected the trailing edge of the original, the feed motor stops rotating
and the tray lift motor starts to rotate to lift the tray. The tray lift motor stops rotating when a specified
number of counts is counter after the upper limit sensor has detected the top side of the original.
The empty sensor detects whether or not there is a next original when a specified time passes after the
registration sensor has detected the trailing edge of the original. If not, the tray lift motor starts to rotate
to lower the tray and the original set signal is reset. The tray lift motor stops rotating when the lower limit
sensor has detected the tray.
When the trailing edge of the original has passed the scanning section, the SCN-STR turns OFF and
both the read and large original exit motors start to accelerate.
The large original exit motor slows down when the trailing edge of the original has passed the 4th roller
and proceeded a specified distance. After the large original exit sensor has detected the trailing edge of
the original, the read motor stops rotating soon and the large original exit motor stops rotating when the
original has proceeded a specified distance. Then the original is nipped by the large original exit roller.
AR-651/810 RADF (DOCUMENT FEEDER) 16 - 27
(11) Start of 2nd original back side registering
Same operation as 16.5.2.(6)
(12) Start of 2nd original back side feeding
Same operation as 16.5.2.(7)
(13) Start of 2nd original back side scanning
Same operation as 16.5.2.(8)
(14) Idle reversing and discharging of 2nd original
Both the large original exit and read motors start to rotate foward. When the leading edge of the original
has reached the read sensor then been transported a specified distance by the read motor, the
disengagement solenoid turns ON. The large original exit motor stops when the disengagement solenoid
has turned ON.
When the leading edge of the original has been transported to the large original exit side and reached
the 3rd roller and, the large original exit motor starts to rotate in reverse.
The large original exit motor starts to slow down when the trailing edge of the original has passed the
4th roller and proceeded a specified distance. The read motor stops rotating without a next original.
The large original exit motor stops rotating when the trailing edge of the original has been detected by
the large original exit sensor and proceeded a specified distance. The large original exit solenoid turns
OFF and the operation ends when the original has been discharged.
AR-651/810 RADF (DOCUMENT FEEDER) 16 - 28
16. 5. 5. Single-sided feeding at mixed-original mode
(Operational condition: A4-R and FOLIO originals/Reproduction rario: 100%)
(1) Original setting
Same operation as 16.5.1.(1)
(2) Lift of the lifting tray
Same operation as 16.5.1.(2)
(3) Start of separation
Same operation as 16.5.1.(3)
(4) Start of feeding
The feed motor starts to rotate in reverse. After the feed motor has finished accelerating, the read motor
starts to rotate forward.
Both the feed and read motors start to slow down when the leading edge of the original has come to a
specified distance before the read sensor.
The original is transported a specified distance by the read motor after the read sensor detects the
leading edge of the original. Then after the original size is detected and the idle reversing is judged to be
necessary, both the feed and read motors start to accelerate and the large original exit solenoid turns
ON.
The large original exit motor starts to rotate in reverse when the leading edge of the original has been
transported to the large original exit side and passed the 3rd roller.
When the registration sensor detects the trailing edge of the original, the feed motor stops rotating and
the tray lift motor starts to rotate to lift the tray. Then the tray lift motor stops lifting the tray when a
specified number of counts is counted after the upper limit sensor has detected the top side of the
original.
The empty sensor detects whether or not there is a next original when a specified time passes after the
the registration sensor has detected the trailing edge of the original. With a next original, separating
begins. Without it, the tray lift motor starts to rotate to lower the tray and the original set signal is reset.
The tray lift motor stops rotating when the lower limit sensor has detected the tray.
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