Konica Minolta bizhub c650 Service Manual page 275

4. Conveyance section
(2) Punch + Z-folding
1. Transmitting the paper pass signal from the horizontal transfer, the main motor
(M6) turns ON and rotates in high speed.
2. The main motor rotates in low speed and perform the 1st folding operation a speci-
fied period of time after the paper size detect board (PSDTB) detects the leading
edge of the paper.
3. The main motor turns OFF for the punching operation a specified period of time
after paper size detect board detects the trailing edge of the paper.
4. After the punching operation, The main motor turns ON and perform the 2nd fold-
ing operation.
5. The main motor rotates in high speed to perform the paper exit operation of the 1st
paper and to convey the 2nd paper in sync with the paper exit speed of the main
body when the conveyance sensor (PS1) detects the leading edge of the paper
and turns ON after the 2nd folding operation.
6. The main motor turns OFF when the exit sensor (PS9) detects the trailing edge of
the last paper.
Paper size detect board (PSDTB)
Conveyance sensor (PS1)
Exit sensor (PS9)
Main motor (M6)
[1] Paper pass signal from the horizontal
transfer
[2] Main motor (M6) driven in low speed
[3] Main motor stopped for the punching
operation
[4] 2nd folding operation
[5] Main motor driven in high speed
16
[7]
High speed
Low speed
[1] [2] [3]
Theory of operation Ver. 2.0 May 2008
[8]
[4] [5] [6]
[6] Paper exit operation
[7] 1st paper
[8] 2nd paper
[9] 3rd (last) paper
[10] Main motor turned OFF when the trailing
edge of the last paper is detected
[9]
[10]
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