2F3/2F4
2-1-3
Paper gauge sensing circuit
The actuator which has a light reflector at one end keeps tracking of the height of the paper stack in the paper cassette.
The angle of the reflector varies according to the actuator angle which means the amount of paper remaining. As the
reflector moves across the detecting surface of paper gauge sensor (photo interrupter) 1 and 2, the on and off states of
these sensors vary in combination as shown in the table below, allowing to determine the amount of remaining paper in
the cassette.
Figure 2-1-4
Paper feed unit
Sensor PWB
Acutuator
(Reflecting mirror)
Paper gauge
sensor 2 (PH703)
Paper gauge
sensor 1 (PH702)
PH702
PH703
Empty
1 to 1/3
1/3 to 2/3
2/3 to full
PH702
PH703
L
L
L
H
L
H
H
H
Actuator
position
Paper
gauge
Sensing input
Содержание C5020N - FS Color LED Printer
Страница 1: ...SERVICE MANUAL Published in September 2006 842F3115 2F3SM065 Rev 5 FS C5020N FS C5030N ...
Страница 6: ...2F3 2F4 This page is intentionally left blank ...
Страница 12: ...This page is intentionally left blank ...
Страница 20: ...2F3 2F4 1 1 8 This page is intentionally left blank ...
Страница 22: ...2F3 2F4 1 2 2 This page is intentionally left blank ...
Страница 86: ...2F3 2F4 1 5 34 This page is intentionally left blank ...
Страница 172: ...2F3 2F4 2 1 30 This page is intentionally left blank ...
Страница 176: ...2F3 2F4 2 2 4 This page is intentionally left blank ...
Страница 214: ...2F3 2F4 2 4 26 This page is intentionally left blank ...
Страница 215: ......
Страница 216: ......