AR-CF1 (serv.man11). Complete service manual - Sharp Copying Equipment Service Manual (repair manual). Page 117

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CHAPTER 3   SADDLE STITCH UNIT BASIC OPERATION
B.
Controlling the Inlet Flappers
1.
Outline
The two flappers mounted at the paper inlet are operated to configure the feed path according to
the size of paper. The flappers are used to enable the following:
1. To detect the passage of the trailing edge of the paper being moved by an appropriate sensor.
2. To prevent the following sheet from butting against the top of the existing stack,
Table 3-301 shows the relationship between sensors and paper sizes.
Sensor
A3/LD
B4
A4-R/LT-R
No.1 paper sensor (PI18S)
Used
Used
Used
No.2 paper sensor (PI19S)
Not used
Used
Used
No.3 paper sensor (PI20S)
Not used
Not used
Used
Table 3-301
Each flapper is driven by its own solenoid.
Table 3-302 shows the relationship between solenoids and paper sizes.
Solenoid
A3/LD
B4
A4-R/LT-R
No.1 paper deflecting
OFF
ON
ON
solenoid (SL1S)
No.2 paper deflecting
OFF
OFF
ON
solenoid (SL2S)
Table 3-302
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