Read Sharp AR-CF1 (serv.man4) Service Manual online
3-5
CHAPTER 3 SADDLE STITCH UNIT BASIC OPERATION
3.
Inputs to the Saddle Stitch Controller PCB
Saddle stitch controller PCB
When paper is present at
the No.1 paper sensor, “1”.
When paper is present at
the No.2 paper sensor, “1”.
When paper is present at
the No.3 paper sensor, “1”.
the No.1 paper sensor, “1”.
When paper is present at
the No.2 paper sensor, “1”.
When paper is present at
the No.3 paper sensor, “1”.
When the stitch unit is at
the home position for
stitching, “0”.
the home position for
stitching, “0”.
When no staple is present,
“0”.
“0”.
When the stitcher unit is
at the home position for
stitching, “0”.
at the home position for
stitching, “0”.
When no staple is present,
“0”.
“0”.
PI18S
Paper sensor PCB
Stitch unit (front)
PI19S
PI20S
MS6S
MS7S
-2
-3
-4
J123-5
-2
J109-3
-2
J110-3
-3
J111-2
+5V
1STPA
1STPA
STCHHP1*
HKEMP1
2NDPA
3RDPA
3RDPA
-1
-4
-3
-2
J10-1
-5
-4
-3
-2
-1
-5
-2
-3
-4
-5
-1
J304A
J304
J204
-7
J315-5
-6
-1
J8-3
-2
-1
-3
-2
-7
-5
-6
No.1 paper sensor
No.2 paper sensor
No.3 paper sensor
Stitch home
position
sensor (front)
position
sensor (front)
Staple
sensor (front)
sensor (front)
Stitch home
position
sensor (rear)
position
sensor (rear)
Staple
sensor (rear)
sensor (rear)
When the inlet door is
closed, “1”.
closed, “1”.
When the front door is
closed, “1”.
closed, “1”.
When the delivery door
is closed, “1”.
is closed, “1”.
Stitch unit (rear)
MS4S
MS5S
Inlet door switch
MS1S
N.O.
+24V
+24U
STCHHP2*
HKEMP2
INLTCVRMS
FDROPN
-7
J316-5
-6
-8
-2
J8-10
J4-1
Front door switch
MS2S
N.O.
-4
J4-3
-9
-1
-3
-2
-7
-5
-6
DELVMS
Delivery door switch
MS3S
N.O.
-6
J4-5
J305
J205
JD2
JD1
J306
J121
J305
J120
-1
-2
-1
-2
Figure 3-105
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