Measures to take when alert occurs:
- Paper cooling fan motor /Fr (FM1)
- LS control board (LSCB)
- The message "Please call service" is displayed on the panel.
Solution:
- Check the connector connection and the wiring between LSCB and the fan, and repair it if any abnormality.
- Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: LS-505: 4-A).
- Replace FM1.
- Replace LSCB.
