Gestetner A265 Service Manual page 335

SC543: Fusing overheat error
-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
-Definition- [A]
A fusing temperature of lower than 100°C is detected for 1 second by the fusing
thermistor.
- Possible causes -
• Fusing thermistor defective
• Power supply board defective
• Poor connection of the fusing unit
SC546: Unstable fusing temperature
Definition: [A]
Fusing temperature more than 60 °C: The fusing temperature does not rise 2°C
or more within 6 seconds after the fusing lamp has been on.
Fusing temperature 60 °C or less: The fusing temperature does not rise 2°C or
more during a 6 second interval (the 6 s timer starts 14 s after the fusing lamp
turned on).
Possible Causes:
• Thermistor defective
• Poor connection of the fusing unit
• Power supply unit defective
SC547: Zero cross signal malfunction
-Definition- [A]
Zero cross signals are not detected within a certain period.
- Possible causes -
• Power supply board defective
• IOB defective
• BICU defective
SM
CÓPIA NÃO CONTROLADA
7-9
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
A265/A267