AR-CF1 (serv.man4). Saddle stitch unit basic operation - Sharp Copying Equipment Service Manual (repair manual). Page 4

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3-3
CHAPTER 3   SADDLE STITCH UNIT BASIC OPERATION
C.
Inputs to and Outputs from the Saddle Stitch Controller PCB
1.
Inputs to the Saddle Stitch Controller PCB
Paper folding 
motor clock 
sensor
Alignment 
plate home 
position sensor
Paper 
positioning 
plate home 
position sensor
Tray paper 
sensor
PI7S
J402A
J402
J502
J106-3
-1
-2
PI6S
J100-3
-1
-2
J6-7
-9
-8
J6-4
-6
-5
-3
-1
-2
-1
-3
-2
J202A
J302
J202
-6
-4
-5
-1
-3
-2
-3
-1
-2
-4
-6
-5
PI5S
J101-3
-1
-2
J11-1
-3
-2
PI4S
J102-1
-2
-3
J11-6
-5
-4
PI3S
J103-3
-1
-2
J11-7
-9
-8
-3
J303-1
-2
-1
J203-3
-2
-3
J309-1
-2
-1
J209-3
-2
PI2S
J104-3
-1
-2
J11-10
-12
-11
PI1S
J107-1
-2
-3
J11-15
Saddle stitch controller PCB
When the paper pushing plate 
motor is rotating, alternately 
between “1” and “0”.
+5V
LUNGECLK
When the front door is open, 
“0”.
+5V
FDR
When the paper folding motor 
is rotating, alternately between 
“1” and “0”.
+5V
FLDCLK
When the alignment plate is 
at home position, “1”.
+5V
JOGHP
When paper is present on the 
tray, “1”.
+5V
TRYPAR
When the paper positioning 
plate is at the home position 
sensor, “1”.
+5V
PAPPOS
When the delivery cover is 
open, “0”.
+5V
EJCVR
-14
-13
Paper pushing 
plate motor 
clock sensor
Front door 
open/closed 
sensor
Delivery cover 
sensor
Figure 3-103
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