AR-CF1 (serv.man4). Saddle stitch unit basic operation - Sharp Copying Equipment Service Manual (repair manual). Page 40

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CHAPTER 3   SADDLE STITCH UNIT BASIC OPERATION
2.
Inlet Delay Jam
The No.1 paper sensor (PI18S) on the paper sensor PCB does not turn ON for a specific period
of time after the inlet sensor (PI1) of the finisher turned ON.
Inlet sensor (PI1)
Inlet sensor (PI1)
(PI18S)
(PI18S)
No.1 paper 
sensor
No.1 paper 
sensor
Feed motor
Feed motor
Delivery speed  (mm/sec)
Delivery speed  (mm/sec)
Jam
Load stops
Figure 3-602
3.
Inlet Stationary Jam
The No.1 paper sensor (PI18S), No.2 paper sensor (PI19S), and No.3 paper sensor (PI20S) on
the paper sensor PCB do not turn OFF when the stack has been fed for a specific period after the
No.1 paper sensor (PI18S) turns ON. The paper sensor used varies according to the paper size.
a.
A3/LD Stack
(PI18S)
(PI18S)
No.1 paper sensor
No.1 paper sensor
Feed motor
Feed motor
Normal
Jam
Load stops
T: feeding of (paper length x 1.5) mm
T: feeding of (paper length x 1.5) mm
Figure 3-603
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