Canon imageRUNNER iR2270 Service Manual page 136

Chapter 5 55
E531 0001
0002
E540 0001
0002
0003
0005
5-2
-The stapler unit is faulty.
-The stapler HP sensor is faulty.
-The finisher controller PCB is
faulty.
-The stack tray shift motor or
the finisher controller PCB is
faulty.
-The stack tray HP sensor is
faulty.
-The stack tray lock sensor is
faulty.
-The stack tray shift motor is
subjected to a faulty load.
-The stapler does not move past
the stapling home position 400
msec after the start of stapling.
-The stapler moves past the
stapling home position but does
not reach stapling home
position 400 msec after the start
of stapling operation. Moreover,
it does not reach stapling home
position within 400 msec after
the reverse operation is started.
The stack tray has been driven,
but the paper surface is not
detected.
The shift does not start within a
specific period of time (i.e., a
shift to the point of retrieval).
The stack tray has been moved,
but it does not reach the sensor
within 3000 msec.
The stack tray has been moved,
but the stack tray encoder clock
signal is not detected twice or
more within 300 msec.