76
v Drum Driving Section
chap.2
440322
Drum position cam
(1) Drum Stop / JAM Detection Position
Sensor
2. Function of Parts
The drum stop / JAM detection position sensor detects the drum stop position and JAM detection position.
2The drum stop position is the position where the drum stops at the same time when a beep sounds after the
JOG switch (drum rotation switch) is kept pressing.
2The JAM detection position is the timing to check paper jamming in the paper ejection section.
2Paper jamming in the paper ejection section is checked in the above timing with the jam sensor (photo-
receiving) and P roll sensor.
Operation
The drum stop / JAM detection position sensor is positioned while the drum is rotating as follows:-
2The drum stop position is detected with the edge of photointerrupting / photopassing.
2The JAM detection position is detected with the edge of photopassing / photointerrupting.
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