Kyocera Mita DF-75, Service Manual

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CHAPTER 2 OUTLINE OF OPERATION
a. 2-Hole, 4-Hole Type
The home position is identified when the punch home position is ON. The punching opera-
tion for the first sheet ends when the punch shaft has rotated 180° and the punch home posi-
tion sensor goes ON; the punching operation for the second sheet ends when the punch shaft
has rotated 180° in reverse and the punch home position sensor goes ON.
The punching operation takes place as follows when making a hole in two sheets of paper.
1) A hole is punched along the trailing edge of the 1st sheet.
(punch shaft at
rest/home position)
(punch shaft CW rotation
by 90˚/hole made)
(punch shaft CW rotation by 180˚/
punching operation ends)
Sensor flag
Punch home position
sensor (PI1P)
Punch shaft
Eccentric cam
Hole
puncher
Die
Die
Paper
Waste paper
F02-602-02
2) A hole is made along the trailing edge of the 2nd sheet.
F02-602-03
(punch shaft at rest/
home position)
(punch shaft CCW rotation
by 90˚/hole made)
(punch shaft CCW rotation by 180˚/
end of punching operation)