¶ 1. Turn off the machine and unplug the power cord.
¶ 2. To disconnect the transfer cable terminal on the left side of the nozzle sub-board, use an Wrench to remove the two securing screws located above the AI Lidar and the two securing screws on the sides of the fan cover.
¶ 3. Remove the fan cover and disconnect the model fan connector.
¶ 5. Firstly, remove the stick glue, and disconnect all the wires on the Sub-board.
¶ 6. Remove the fan connector from the old nozzle sub-board, insert the connector into the slot of the new nozzle sub-board with the fan label facing away from the sub-board, aligning it with the fan mounting holes. Insert three screws into the nozzle sub-board and fan mounting holes to secure the nozzle sub-board.
¶ 7. Insert the terminals of the motor wire, ceramic heater ring wire, thermistor wire, Lidar module data transmission cable, and sub-board data transmission cable into their respective slots on the sub-board. Once inserted, use an Wrench to tighten the three nozzle sub-board securing screws.
¶ 8. Ensure that the terminal positions, orientations, and engagement in the slots on the nozzle sub-board are correct.
¶ 9. Take the fan cover and insert the model cooling fan connector into the corresponding terminal port on the front of the nozzle sub-board. Tighten the two screws on the left and right sides of the fan cover to secure it.