538
JAN 2006
Ver. 5.2
DP-3510/3520/3530/4510/4520/4530/6010/6020/6030
11.1.2.2.11. 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)
• Delivery 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 Copiers DC
controller of the presence of a jam. When all doors are closed after the paper jam is removed, the Buffer
Path Inlet Paper Sensor (PI17) checks whether or not paper is being detected in addition to the above four
sensors (Inlet Sensor, Delivery Sensor, Stapling Tray Sensor and Buffer Path Paper Sensor). If the sensors
detect paper, the Finisher Unit judges that paper jams have not completely been removed, and sends the
paper jam removal signal to the Copier again.
The Tray 1 Paper Sensor (PI11) and Tray 2 Paper Sensor (PI12) are not used to detect jams.
Fig. 2-065
Table. 2-005
No.
Sensor Names
PI1
Inlet Sensor
PI3
Delivery Sensor
PI4
Stapler Tray Sensor
PI14
Buffer Path Paper Sensor
PI3
PI1
PI4
PI14
Summary of Contents for DP-3530
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