Main power supply PCB, DC controller PCB Press the Start key. Is it W (open)? YES: The heater has an open circuit, or the thermal switch is open. Fixing film unit (thermistor) Check the interval between pin 1 and pin 2 and between pin 3 and pin 4 of the connectosr (4-pin) of the thermistor for electrical continuity. DC controller PCB (J320) relay connector thermistor NO: Connect the connector. main power supply PCB (J8) relay connector heater b. ![]() Connector Is the connector of the fixing assembly connected? a. To reset the error, execute the following in service mode: COPIER>FUNCTION>CLEAR>ERR. ![]() Causes: The fixing film unit is faulty.Or, it does not reach 70C 2 sec thereafter Description: The reading of the main thermistor does not reach 30C 1 sec after the main power switch is turned on.
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