■ Various Control
● Original Detection
There are two types of Original Detection in this Equipment.
1. Original Presence / Absence Detection
Setting the original onto the original tray pushes up the actuator, activating (light shielded =>light transmitted) the Document
Sensor (SR703), and resulting in detection of the presence of original.
2. Detection of the End of the Original
The leading edge of the original that is fed pushes up the actuator, activating the Document End Sensor (SR702) (light
shielded =>light transmitted) and resulting in detection of the reach of the leading edge of original. Furthermore, when the
trailing edge of the original passes the actuator position, the actuator returns to the original position, inactivating the Document
End Sensor (SR702) (light transmitted => light shielded). The trailing edge of the original is detected by this mechanism.
The original length that can be scanned with this equipment is less than 400 mm. Passing of the original longer than this
results in jam stop. The original length is calculated by the time it takes from detection of the leading edge of the original to
detection of the trailing edge of the original.
NOTE:
There is no function to detect the original size (original width, length) in this equipment.
PS703
PS702
J903
6
VCC
GND
DES
VCC
GND
DS
1 2 3 4 5
MCON
● Jam Detection
The following cases are judged as jam.
1. In case of delay in reaching DS/DES or stationary during scanning of original
2. In case DS/DES is detected as ON at power-on (residual paper jam)
3. In case of detecting original of which length is 400 mm or longer
Operation after Detection of Jam
The host machine stops scanning operation and displays "CHECK DOCUMENT" on the control panel. No jam code is displayed.
In case of the model equipped with fax function (with built-in speaker), the warning beep occurs at the detection of jam.
2. Technical Explanation
24
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