How to fix Homing Fail/Alarm 8/Alarm 9?
Please open LaserGRBL or LightBurn to and connect machine to confirm the controller bit as following figure: (or Type "$i" into the command box).
If it appears: MKS DLC32, it is 32-bit, otherwise it is 8-bit.
Connect LE400PRO to the computer and import the configuration file:
Steps in LaserGRBL:
*Please refer to the picture in next pages.
Please check belt to confirm whether the laser module is parallel to the X-axis bar. If not parallel, re-tighten the belt.
Please check whether the opening direction of the limit switch is correct, if not, it needs to be adjusted. You can refer to the following video:
If there is no opening direction error in the limit switch, you can try to install the limit switches of the X-axis and Y-axis in exchange.
Flash the firmware
Please refer to the attachment file “How to flashing firmware - LE400PRO” for the details.