1. Restore factory settings>>
2. Check if the limit switch sensor of the noise axis is working. The limit switch indicator glows red when the axis reaches its limit of motion.

• If the limit switch indicator doesn’t light up when the axis is reaching its limit,

         a.  Press a piece of metal against the switch.

         b.  If the indicator of the switch lights up upon contacting the metal, adjust the switch’s position to where it can easily detect the presence of the axis.

        c. If the indicator is not lighting up, the limit switch sensor is faulty; replace it with a new, identical one.

• If the indicator does light up when the axis has moved past the limit, but with the noise,

         a.  Swap the limit switch plugs of the X and Y axes. (as shown)

         b.  Attach one piece of metal to each limit switch sensor.

         c.  Reboot the engraver and return the axes to the origin.

         Normally, both axes will not move under such circumstances.

• If the once-noisy axis is not moving but the other one is, then the limit switch of the once-noisy axis is faulty; replace it with a new, identical one.
• If the once-noisy axis is still noisy and moving, then the mainboard is faulty; replace it with a new, identical one.