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How to Replace the Stepper Driver

[ Manual N2&N2 Plus - How to Replace the Stepper Driver-V1.0 ]


Note: It is recommended that you wear anti-static gloves when performing the steps in this tutorial to prevent static electricity from damaging the motion controller board.

 

Tools:

Spatula

Phillips screwdriver

Multimeter

Hex wrench


1. Power off the printer, and open the side door.


Figure 1 Power off the printer.

 

2. Remove the 4 set screws on the mainboard cover, and take off the mainboard cover. If the mainboard is not fixed by screws, use a spatula (or a screwdriver) to carefully pry the cover off.

Figure 2 Open the mainboard cover.

 

3. Unplug the two stepper driver boards on the lower side of the main board.

Note: If you find it difficult to unplug them, you can first unplug the extruder connection cable on the right side of the stepper drive board, then you will have enough space to unplug the stepper driver board.

Figure 3 Unplug the two stepper driver boards.

 

4. Re-insert the new stepper driver board back into its original position on the main board, taking care to align the pins, do not inset them in the wrong hole.

Note: The screws should be installed on the left. If you unplug the extruder connection cable before you unplug the old stepper driver board, don't forget to insert the cable back into place.

Figure 4 Re-insert the new stepper driver board.

 

5. Measure the voltage of two stepper driver boards with a multimeter. Contact one probe with the screw on the side of stepper driver board, and plug the other probe into the position marked in the following figure.

If the absolute value of the voltage is 0.7V, there is no need to adjust the voltage, please proceed to step 7. If the absolute value of the voltage is not 0.7V, proceed to step 6 to adjust the voltage of the stepper driver board.


Figure 5 Measure the voltage of two stepper driver boards.


6. Slowly turn the screw on one side of the stepper drive board to adjust the voltage until the absolute value of the voltage becomes 0.7V.

Note: Turning the screw clockwise will increase the voltage, and turning the screw counterclockwise will decrease the voltage.


Figure 6 Adjust the voltage.

 

7. Re-install the mainboard cover, then reinstall the four set screws.

Figure 7 Re-install the mainboard cover.

 

8. Turn on the printer, enter the settings and select "More Settings>Hardware Information>Steps Per Unit" in the “Machine” tab to enter the steps per unit setting.


Figure 8 Enter Steps Per Unit.

 

9. Modify the Y and X Steps Per Unit value from 80 to 40.


Figure 9 Modify the Y and X Steps Per Unit value.

 

10. Click “OK” and return to the setting interface, select “Restart” to restart the printer for the current settings to take effect.




[ Manual N2&N2 Plus - How to Replace the Stepper Driver-V1.0 ]


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