Z-Axis Lifting Malfunction Fix for Nano

If the Z-axis of the Nano machine fails to lift properly, it is often related to a malfunction in the column control board. Replacing this component can restore normal Z-axis movement. Follow the steps below carefully to ensure a safe and correct repair process.

1. Remove the L-shaped Support Bracket

Begin by removing the L-shaped support bracket from the machine.

• Turn the hand-tightened nut counterclockwise
• Carefully detach and remove the L-shaped support bracket

This step provides access to the internal structure of the column.

2. Remove the Column Housing

Next, remove the column housing to access the internal components.

• Use a hex wrench to remove the 12 screws located on both the inner and outer sides of the column
• Remove the positioning plate and the column cover
• Carefully take out the column housing

This exposes the internal control board assembly.

3. Disconnect and Remove the Column Control Board

Proceed to remove the faulty column control board.

• Disconnect the cables on both sides of the column control board
• Use a hex wrench to remove the 4 screws securing the board
• Carefully lift out the control board

Take care to note cable positions for reassembly.

4. Remove the Rear Screws

• Remove the 2 screws located at the back of the column control board
• Fully detach the control board from the structure

At this point, the faulty board can be completely removed.

5. Install the New Column Control Board

• Place the new column control board into the original position
• Secure it using the appropriate screws
• Reconnect all cables exactly as they were before

Ensure all connections are firm and correctly aligned.

6. Reassemble the Column Housing

• Reinstall the column housing
• Place back the positioning plate and column cover in order
• Use a hex wrench to tighten all screws securely

Proper reassembly ensures structural stability.

7. Reinstall the L-shaped Support Bracket

• Reattach the L-shaped support bracket
• Tighten the hand-tightened nut to secure it in place

Conclusion

A Z-axis lifting malfunction on the Nano is commonly caused by a faulty column control board. By carefully replacing this component and following the correct disassembly and reassembly steps, you can restore full Z-axis functionality.

Always ensure all screws are properly tightened and all cables are securely connected to prevent future issues and maintain stable machine performance.