Ricoh MP171
- Code: 542
- Description: Fusing temperature warm-up error
The fusing temperature rises 7 degrees or less in two seconds; and this continues 5 times consecutively. Or, the fusing temperature is not detected within 25 or 35 seconds. - Causes: • Defective thermistor
• Incorrect installation of the thermistor
• Defective fusing lamp
• Defective power supply unit
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