SC551: Pressure roller thermistor open
- Definition - [A]
The output of the pressure roller thermistor goes to 5 V, corresponding to
0°C.
- Possible causes -
• Pressure roller thermistor open
• Main control board defective
• Fusing unit not installed
SC552: Pressure roller warm-up error
- Definition - [A]
Pressure roller temperature does not reach the ready temperature within
12 minutes after the main switch is turned on.
- Possible causes -
• Pressure roller thermistor not in position
• Pressure roller lamp open
• Pressure roller thermistor defective
• Main control board defective
SC553: Pressure roller overheat
- Definition - [A]
A pressure roller temperature of over 180°C is detected 5 times.
- Possible causes -
• Pressure roller thermistor defective
• AC drive board defective (triac)
•
Main control board defective
A172/A199 6-20 SM
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