Paper Level Sensor - MyBinding DC-545HC Service Manual

(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
Light not transmitted
Light transmitted
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
Output
5V
0V
Level Sensor
CA021
1 RED
2 YELLOW
3 BLUE
Level
Sensor
Feed P.W.B. unit
N4-V303*
CN4-11
-12
-13
Main P.W.B. unit
N4-V300*
21
z Paper Feed Unit
Chap.2
q
w
Level Sensor
Adjustment Lever