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Flex the high temp insulated wire that is crimped onto the heater cartridge and insert it into the through hole on the HE280 Hotend PCB marked with a +

The high temp insulated wire should extend through the PCB board with the insulation resting against the bottom of the board.

Feed the thermistor wires through the two holes just to the right of "PART +" (or the holes marked "TEMP"). See image for reference.

The PTFE tubing on the legs of the themistor should rest against the bottom of the HE280 Hotend PCB board. It is ok if the thermistor leads have a slight bow to them between the heater block and the PCB, this is actually preferred, so do not trim the PTFE/legs down from the stock length.

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