Finisher/Pusher Motor Trouble; Finisher Tray Lift Motor Trouble; Finisher/Alignment Motor Trouble; Finisher Saddle Folding Sensor Trouble - Sharp MX-M550U Service Manual

F1-11

Finisher/pusher motor trouble

Details When learning the paper exit roller speed, the
process is not completed in 10sec.
When controlling the paper exit roller speed, an
encoder input is not detected in a specified time.
Section Finisher
Case 1 Cause Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB trouble
Check and Use SIM 3-3 to check the pusher motor operation
remedy and the paddle solenoid operation, or use SIM 3-2
to check the oomerang rotations sensor.
F1-15

Finisher tray lift motor trouble

Details When operating the tray lift unit, the process is not
completed in 12sec.
When the tray lift unit is lifting, the tray lift unit upper
limit sensor ON is detected.
When operating the tray lift unit, en encoder input is
not detected in 0.2sec.
Section Finisher
Case 1 Cause Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB trouble
Check and Use SIM 3-3 to check the elevator motor operation.
remedy
F1-19

Finisher/alignment motor trouble

Details When operating the alignment motor, it does not
move from the home position in 2sec.
When operating the alignment motor, it does not
return to the home position in 2sec.
Section Finisher
Case 1 Cause Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB trouble
Check and Use SIM 3-3 to check the motor operation.
remedy
F1-31

Finisher saddle folding sensor trouble

Details When the motor rotation speed (linear velocity) at
every 200msec falls below the specified level.
When moving to the home position, the home
position sensor does not turn on within the
specified time.
When shifting from the home position to the lead
edge, the home position sensor does not turn off
within the specified time.
Section Finisher
Case 1 Cause Sensor breakage
Harness disconnection
Console finisher control PWB trouble
Check and Use SIM 3-2 to check the sensor operation.
remedy
MX-M700N SELF DIAG AND TROUBLE CODE 8 – 11
F1-32 Finisher-saddle communication
trouble
Details Communication error between the finisher and the
saddle
When the motor rotation speed (linear velocity) at
every 200msec falls below the specified level.
When moving to the home position, the home
position sensor does not turn on within the
specified time.
When shifting from the home position to the lead
edge, the home position sensor does not turn off
within the specified time.
Section Finisher
Case 1 Cause Improper connection or disconnection of the
connector and the harness between the finisher
and the saddle unit.
Check and Check the connector and the harness in the
remedy communication line.
Case 2 Cause Finisher control PWB trouble
Control PWB (PCU) trouble
Check and Replace the finisher control PWB.
remedy
Case 3 Cause Malfunction caused by noises
Check and Canceled by turning ON/ OFF the power.
remedy
F1-33 Finisher/punch shift motor trouble
Details When operating the punch shift motor, it does not
move from the home position in 4sec.
When operating the punch shift motor, it does not
return to the home position in 4sec.
Section Finisher
Case 1 Cause Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB trouble
Check and Use SIM 3-3 to check the motor operation.
remedy
F1-34 Finisher/punch motor trouble
Details When learning the punch unit, it does not complete
normally and does not return to the home position.
When executing punching, it does not shift from the
home position in 0.2sec, or it overruns to go into
non-HP state.
When operating the punch unit, the encoder input
cannot be detected within 0.1sec.
Section Finisher
Case 1 Cause Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB trouble
Check and Use SIM 3-3 to check the motor operation.
remedy
F1-37 Finisher/ backup RAM trouble
Details When backup RAM data check sum is NG when
turning on the power.
Section Finisher
Case 1 Cause Finisher control PWB trouble
Malfunction caused by noises
Check and Replace the finisher control PWB.
remedy