Estimated abnormal parts:
- Paper suction fan /6 (FM18: PF-703)
- PF drive board (PFUDB: PF-703)
- Check the connector connection and the wiring between PFUDB 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: PF-703: 19-L).
- Replace FM18.
- Replace PFUDB.
