====== Z homing failed ======

{{  :tina2:071.png?direct&400  }}
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====== Confirm the issue in the Z direction ======

Please enter endstop troubleshooting.\\
1. Check the “endstop"\\
{{  :tina2:图片51.png?direct&800  }}
2.Press the Z endstop manually and observe if the "Off-On" status is displayed correctly. 
If it does not display normally, it indicates an issue with the Z direction.\\
{{  :tina2:072.png?direct&800  }}
· If it continuously displays "off," the problem is with the Z endstop.\\
· If it continuously displays "on," the issue is with the wire of the Z endstop.
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====== Replace both the Z endstop and the wire ======

1. Confirm that the shaft coupling shell has been removed, re-insert the plug to see if it works normally.\\
{{  :tina2:图片62.png?nolink&800  }}\\
2. Unplug the Z endstop wire on the motherboard.\\
{{  :tina2:图片63.png?nolink&800  }}\\
3. Cut off the black ties.\\
{{  :tina2:图片64.png?nolink&800  }}\\
4. Use a screwdriver to loosen the screws on the Z endstop and replace it.\\
{{  :tina2:图片65.png?nolink&800  }}
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====== If the nozzle does not move, check the Z motor and the mainboard ======

**Move the nozzle to the center, click on "Level bed",** and if the nozzle does not move,this indicates a fault with either the Z motor or the mainboard. 
{{ :tina2:图片84.png?direct&400 |}}
**To diagnose the issue:** \\
**1. Re-seat the motor wire to see if the issue is resolved.** \\
{{ :tina2:086.png?direct&800 |}}
**2. Swap the Y and Z motor wires.** \\
{{  :tina2:087.png?direct&800  }}**
3. Click “Move axis” and jog the Y axis:** 
{{  :tina2:088.png?direct&800  }}
①If the nozzle does not rise or fall, but you move the Z-axis and find that the platform moves normally, then you need to replace the Z motor.\\
②If the nozzle rises or falls, but you move the Z-axis and find that the platform does not move, then you need to replace the mainboard.