- FNS control board (FNSCB)
- PI drive board (PIDB)
- Tray up down motor /Up (M201)
- Tray upper limit sensor /Up (PS205)
- Tray lower limit sensor /Up (PS204)
- Check the PI lower tray section, and clean/repair it if any abnormality.
- Check the connector connection and the wiring between PIDB and motor/sensor, and repair it if any abnormality.
- Check the connector connection and the wiring between FNSCB and PIDB, and repair it if any abnormality.
- Check the I/O drive of the motor of the coupling of the gear, and repair/replace it if any abnormality. (Wiring diagram: PI: 4-B)
- Check I/O and the operation of the sensor, and repair/replace it if any abnormality. (Wiring diagram: PI: 4-B)
- Replace M201.
- Replace PS204.
- Replace PS205
- Replace PIDB.
- Replace FNSCB.
