Electrical Components
SM 57 D372
500-Sheet
Finisher
D372
No. Error Problem/Solution
1 Entrance sensor
Problem:
Lag errorOccurs during paper feed.
A paper exit signal (ON) was received from the main
machine, but the entrance sensor did not switch ON after
the finisher transport motor ran long enough to feed paper
500 mm.
Solution:
2 Entrance sensor
Problem:
Late errorOccurs during paper feed.
The entrance detected the paper, but the entrance sensor
did not go OFF after the finisher transport motor ran long
enough to feed 1.5 times the length of the paper size
signaled by the main machine.
Solution:
3 Paper in paper path
Problem:
Occurs at power on, or after the top cover or stapler door
has been closed.
After the top or stapler cover switch is closed, the stapler
cover switch goes OFF but the entrance sensor remains
ON for longer than 50 ms.
Solution:
4 No paper present
Problem:
Occurs during stapling, stapling mode WAIT.
The paper sensor on the stapling tray remains OFF for
more than 50 ms.
Solution: No action required.
5 Positioning roller
motor error
Problem:
Occurs during initialization or during operation of the
positioning roller motor.
During initialization or while the positioning roller arm
was being lowered, the HP sensor remained ON did
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