Gestetner A193 Service Manual page 504

SC CODE DESCRIPTIONS
SC543: Fusing overheat error (A193/A224)
-Definition- [A]
A fusing temperature of over 231°C is detected for 1 second by the fusing
thermistor.
- Possible causes -
•
Fusing thermistor defective
•
Power supply board defective
SC544: Fusing low temperature error (A193/A224)
-Definition- [A]
A fusing temperature of below 100°C is detected for 1 second by the fusing
thermistor.
- Possible causes -
•
Fusing thermistor defective
•
Power supply board defective
SC546: Fusing ready temperature malfunction (A193/A224)
-Definition- [A]
The fusing temperature goes 10 °C below or 10 °C over the stand-by
temperature after warm-up is completed.
- Possible causes -
•
Thermistor defective
•
Poor connection of the fusing unit
•
Power supply board defective
SC547: Zero cross signal malfunction (A193/A224)
-Definition- [A]
Zero cross signals are not detected within a certain period.
- Possible causes -
•
Power supply board defective
•
IOCSS defective
•
BICU defective
A224 13-70 SM