AccuFab-D1 Z Axis Can't Move Down

  • AccuFab-D1 Z-axis can't move down
  • Error message "Z-axis lowest limit is invalid!" shown after clicking the "Move to Bottom"

This phenomenon usually happens after replacing the mainboard. The ground cable of the z-axis is not connected properly or broke.


1. Follow the guide below to take out the projector module:

How to replace the projector

2. Reconnect the port shown in the below image

3. Check the z-axis movement. If the problem is solved, put back the projector. If it still can't move down, contact support to replace this ground cable. 


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