21
(3) Paper Level Sensor
Description
The paper level sensor controls the elevator motor to
determine the position of the feed tray by detecting the
position of the topmost sheet of paper on the feed tray.
Status Output
Light not transmitted 5V
Light transmitted 0V
To reduce the force of the suction, move the adjustment
lever towards q to increase the gap between the suction
belt and the paper.
To increase the force of the suction, move the
adjustment lever towards w to decrease the gap
between the suction belt and the paper.
Turn the lever towards q if the paper is double feed.
Turn the lever towards w if the paper is not being
sucked on to the suction unit.
Circuit diagram
Chap.2
z Paper Feed Unit
Level
Sensor
q
w
Level Sensor
Adjustment Lever
RED
BLUE
YELLOW
1
3
2
CN4-11
-12
5V
GND
Level Sensor
GND
CN1-11CN1-11
-12
-14
CN11-10
-12
-14
-17
-13
Level Sensor
CA021
Feed P.W.B. unit N4-V303*
Main P.W.B. unit N4-V300*
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