Measures to take when alert occurs:
- Entrance conveyance motor (M1)
- PI drive board (PIDB)
- The message "Please call service" is displayed on the panel.
- Check the entrance conveyance section, and clean or repair it when there is any abnormality.
- Check the connector connection and the wiring between PIDB and the motor, and repair it when there is any abnormality.
- Check the I/O drive of the M1 and the coupling of the gear, and repair or replace it when there is any abnormality. (Wiring diagram: FD-503: 3-D)
- Replace M1.
- Replace PIDB.
