How to Solve Dolphin XP-005L Error Code 80 & 84?

Xhorse Dolphin XP-005L get the error like following pics:

1. Error code 84, Z axis step motor initialize exception


2. Error code 80, device initialize error


Hi does anyone know what these mean ? Machine stopped working

Engineer suggestion:

please update firmware again,then check.

But after 5 times update,still the same error.

Then please send us the order number, it needs to change the main PCB. If in warranty, the seller you bought from will send you new PCB free. Please note: all exchange or resend or repair need to get from the seller you bought from. Thanks.