SC No. Level Error Name/Error Condition/Major Cause/Solution
520-00 B Main motor error
"High" signal is detected continuously 20 times or more when
the main motor is turned on.
Detection cycle: 100 msec
Motor lock due to overload to the drive chain
Motor driver defective
Replace the main motor.
SC No. Level Error Name/Error Condition/Major Cause/Solution
522-00 B 2nd tray (option) transport motor error
Encoder defective
An error is detected when phase A/phase B signals of the
encoder are not input
Encoder phase pulse over
An error is detected when the phase difference between
phase A and phase B is shifted by more than the specified
number of pulses.
Rotor restrained time over (overload)
An error is detected when phase A/phase B signals of the
encoder are not input within the predetermined time.
Transport motor error
Harness damaged
Harness not connected correctly
Main board defective
Reconnect the harness.
Replace the harness.
Replace the main board.
Replace the transport motor.