5 printer faults – causes and solutions – Muratec DIGITAL LASER F-114 User Manual
Page 123

Adjustment and Troubleshooting
Service Manual
4-63
4.2.5 Printer Faults – Causes and Solutions
1) Fuser Error
Description: A message "Open Heat Error/Over heat/Heating Error' is displayed in the LCD panel.
1. Thermostat, fuser power
cable or heat lamp is open circuit.
Replace the whole fuser assembly
if the thermostat is open circuit.
Replace the whole fuser assembly
if the thermistor sensor is faulty.
Replace the fuser.
2. Thermistor is open circuit.
3. Heat lamp ON/OFF test
4. Drive gear melted
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