Konica Minolta DF-606 Service Manual page 166

4. PUNCH SECTION
C. Punch control (PK-505)
The FNS transfer motor (M1) is driven by the main body start signal.
In the punching mode, the motor M1 stops temporarily after the FNS entrance sensor (PS4) detects the rear edge of paper.
At the same time, the punch motor (M301) [3] rotates in the direction according to the number of punched holes
and the slide link [5] moves. The switching cam rotates according to the movement of the slide link and the
punching blade [7] lowers to punch a hole.
Moving distance of the slide link [5] is controlled by detecting the eccentric cam actuator [4] with the punch
home sensor (PS301) [1]. When the actuator rotates 180 degrees, first punching is completed. In the second
punching, M301 is reversed. When the actuator reverses 180 degrees, punching is completed. Forward and
reverse rotations are repeated alternately.
The rotating speed of M301 is controlled by detecting the rotation of the punch encoder plate [6] fixed to the
axis of M301 with the punch encoder sensor (PS306) [2].
Then, M301 reverses and the punch home sensor (PS301) [1] returns to ON and the M301 stops finally.
When a specified time elapsed after M1 stops temporarily, M1 resumes rotating and paper is transferred.
[1] Punch home sensor (PS301)
[2] Punch encoder sensor (PS306)
[3] Punch motor (M301)
[4] Actuator
[5] Slide link
[6] Punch encoder plate
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[7] [6]
[1]
[8]
[1]
[9]
[7] Punching blade
[8] Operation of 4-hole punching in the 2 to 3 hole
mode and 4-hole punching in the 2 to 4 hole mode
[9] Operation of 3-hole punching in the 2 to 3 hole
mode and 2-hole punching in the 2 to 4 hole mode
Theory of Operation Ver1.0 Jun.2005
[1]
[2]
[3]
[4]
[5]
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