Detecting Jams - Sharp AR-FN8 Service Manual

K.

Detecting Jams

The following sensors are used to detect the presence/absence of paper and to make sure that
sheets are moved properly:
Inlet sensor (PI1)
elivery sensor (PI3)
Stapling tray sensor (PI4)
Buffer path paper sensor (PI14)
A jam is identified with reference to the presence/absence of paper at each specific sensor at
the times programmed in the memory of the microprocessor (CPU) on the finisher controller PCB.
When the CPU identifies a jam, it suspends the finisher's delivery operation and informs the
host machine C controller of the presence of the jam.
The tray 1 paper sensor (PI11) and tray 2 paper sensor (PI12) are not used to detect jams.
CHAPTER 2 FINISHER UNIT BASIC OPERATION
PI3
PI14
PI4
Figure 2-256
No. Sensor names
PI1
PI1 Inlet sensor
PI3 elivery sensor
PI4 Stapler tray sensor
PI14 Buffer path paper sensor
Table 2-202
2-51