Estimated abnormal parts:
- FNS control board (FNSCB)
- Main tray up down motor (M11)
- Main tray upper limit sensor (PS14)
Correction:
Turn OFF/ON the sub power switch (SW2) of the main body for releasing an abnormal condition.
- Check the tray up/down section and clean/repair it if any abnormality.
- Check the connector connection and the wiring between FNSCB and motor/sensor, and repair it if any abnormality.
- Check the sensor operation, LED emission and light receiving path, and repair/replace it if any abnormality. (Wiring diagram: FS-532: 7-B)
- Check the I/O drive of the motor and the coupling of the gear, and repair/replace it if any abnormality. (Wiring diagram: FS-532: 7-B)
- Replace LED1 and PS14.
- Replace M11.
- Replace FNSCB.
