This is a fuser temperature control error code. Could be as easy as resetting the code and rebooting or it could require parts such as a thermistor, thermofuse, heat lamps. Typically though its the thermistors, the sensor that reads the temperature from the heat roller surface.
My Gestetner Dsc445 shows a continuous misfeed (J001) @ Z1 after removing ALL paper &...
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My Gestetner Dsc445 shows a continuous misfeed (J001) @ Z1 after removing ALL paper & rebooting machine. Can you help?