HomeBrandsElegooResin (SLA/MSLA) 3D Printersz_axis_home_fail
E
z_axis_home_fail
Moderate
Elegoo · Resin (SLA/MSLA) 3D Printers
Z-Axis Cannot Find Home Position
Quick Answer
Error code Z_AXIS_HOME_FAIL on your Elegoo Resin (SLA/MSLA) 3D Printers means: Z-Axis Cannot Find Home Position. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Jupiter SEMars 4Mars 4 UltraSaturn 3Saturn 3 UltraSaturn 4 Ultra
Likely Causes
  1. Z-axis endstop or limit switch is not triggering when the build plate reaches the bottom
  2. Resin overflow has gummed up the Z-axis limit switch mechanism
  3. Z-axis lead screw is binding and the motor cannot drive the platform down to the home position
  4. Endstop wiring disconnected or corroded from resin exposure
How to Fix It
1
Manually lower the build plate by hand (with the printer off) to check for binding in the Z lead screw
2
Clean the Z-axis limit switch area with isopropyl alcohol to remove any cured resin
3
Check the limit switch wiring connection on the mainboard
4
Test the limit switch by pressing it manually and listening for the click
5
If the switch does not click or feels sticky, replace it
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Replacement Z-axis limit switch
Isopropyl alcohol for cleaning
PTFE lubricant for Z lead screw
Related Error Codes
UV_LED_FAILURESCREEN_DEAD_PIXELZ_MOTOR_ERRORUSB_READ_ERRORFILE_CORRUPT
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