MX-5500N, MX-6200N, MX-7000N (serv.man17). MX-FNX3 4 MX-RBX2 MXPNX2A-D SERVICE MANUAL-Operational Description - Sharp Copying Equipment Peripheral (repair manual). Page 9

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MX-FNX4  OPERATIONAL DESCRIPTION  5 – 9
G. Controlling the inlet flappers (MX-FNX4)
Outline
The two flappers mounted at the paper inlet are operated to config-
ure 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 below shows the relationship between sensors and paper
sizes.
Each flapper is driven by its solenoid.
Table below shows the relationship between solenoids and paper
sizes.
Delivery Path of A3/297mmx432mm (11x17) size paper
In the case that three sheets are delivered.
Delivery Path of B4/LGL size paper
In the case that three sheets are delivered.
Sensor
A3/279mmx432mm 
(11x17)
B4/LGL
A4R/LTRR
No.1paper sensor 
(FS1PD)
Used
Used
Used
No.2 paper sensor 
(FS2PD)
Not used
Used
Used
No.2 paper sensor 
(FS3PD)
Not used
Not used
Used
Solenoid
A3/279mmx432mm 
(11x17)
B4/LGL
A4R/LTRR
No. 1 paper deflecting 
plate solenoid 
(FS1DFS)
OFF
ON
ON
No. 2 paper deflecting 
plate solenoid 
(FS2DFS)
OFF
OFF
ON
No.1 paper sensor FS1PD
No.1 paper deflecting
plate solenoid
No.2 paper sensor FS2PD
No.2 paper deflecting
plate solenoid
No.3 paper sensor FS3PD
Paper passed
OFF
Paper unpassed
OFF
Paper unpassed
Leading edge
FS1PD
FS2PD
FS3PD
FS1PD
FS2PD
FS3PD
FS1
DFS
FS2
DFS
No.1 paper sensor
FS1PD
No.2 paper sensor
FS2PD
No.3 paper sensor
FS3PD
Paper passed
Paper passed
ON
OFF
Paper unpassed
Leading edge
FS1PD
FS2PD
FS3PD
FS1PD
FS2PD
FS3PD
FS1
DFS
FS2
DFS

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