Sharp AR-810 (serv.man20) Service Manual ▷ View online
AR-651/810 RADF (DOCUMENT FEEDER) 16 - 21
When the trailing edge of the original has passed the 4th roller then proceeded a specified distance, the
large original exit motor starts to slow down and the read motor stops rotating.
The large original exit motor stops rotating when the trailing edge of the original has been detected by
the large original exit sensor then 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 - 22
16. 5. 4. A3 two-sided feeding
(Operational condition: A3 original/Reproduction ratio: 100%)
(1) Original setting
Same operation as 16.5.1.(1)
(2) Lifting 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
Same operation as 16.5.1.(4)
(5) Start of 1st 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 and the large original exit solenoid turns ON. 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 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
registration sensor has detected the trailing edge of the original. With a next original, separating of the
next original begins.
AR-651/810 RADF (DOCUMENT FEEDER) 16 - 23
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.
(6) Start of 1st original back side registering
Same operation as 16.5.2.(6)
(7) Start of 1st original back side feeding
Same operation as 16.5.2.(7)
(8) Start of 1st original back side scanning
Scanning begins after receiving the original transport signal from the copier. At the same time, the
original transport signal is reset. When the read motor starts to rotate forward, the large original exit
motor also starts to rotate forward and the disengagement solenoid turns ON. (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 stops when the disengagement solenoid has turned ON.
AR-651/810 RADF (DOCUMENT FEEDER) 16 - 24
When the leading edge of the original has been transported to the large original exit side and come the
3rd roller, the large original exit motor starts to rotate in reverse .
The SCN-STR turns OFF when the trailing edge of the original has passed the scanning section. At the
same time, both the read and large original exit motors start to accelerate and the disengagement
solenoid turns OFF.
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.
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