Geeetech

On I3B Z axis don'go down.

Manual move to home make printer ready and the job is done well.

Inverting logic of dip switch of Z home make the Z go home, press the switch but don't stop.

Giacomo

Hi,
1. There may be a problem with the z-axis drive. You can exchange drives with other axes to see if it is normal.
2. Whether the firmware is normal, please check for updates.
3. If you have installed 3d touch, remove it to see if it works normally.
4. You can also refer to the following solutions.
http://geeetech.com/forum/viewtopic.php?f=82&t=60931