¶ Fault Phenomenon:
Some POM wheels are loose and cannot be tightened by adjusting the eccentric nuts.
¶ Precautions before troubleshooting:
Among the six wheels on both sides of the X-axis, one will usually remain impossible to tighten. This is due to component tolerances / assembly errors. This condition has very little impact on the printer's operation and print quality. It is recommended to keep most of the wheels tightened.
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¶ Troubleshooting Video:
https://www.youtube.com/watch?v=tbnpeieAwWg
¶ Tools Required for Troubleshooting:
2.0mm hex screwdriver
2.5mm hex screwdriver
Wrench
¶ Troubleshooting Steps:
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Use the 2.5mm hex screwdriver to loosen the four screws securing the left and right sides of the X-axis.
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Use the 2.0mm hex screwdriver to loosen the screw securing the Z synchronous wheel.
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Ensure the Z synchronous wheel is loose and can be moved up and down.
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Use the 2.5mm hex screwdriver to loosen the four screws securing the Z synchronous wheel bracket.
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Place two columns of equal height under the X-axis.
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Turn the two Z couplings to lower the Z-axis. Ensure both sides of the X-axis are level with the columns.
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Tighten the four screws securing the X-axis.
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Tighten the screws securing the Z synchronous wheel bracket.
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Place the wrench under the Z synchronous wheel bracket and tighten the screw securing the Z synchronous wheel.
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Pull the Z synchronous belt to raise the Z-axis. Remove the columns.
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Manually turn the POM wheels to check tightness, and adjust the eccentric nuts.
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After confirming the POM wheels are properly tightened, go to the touch screen → Leveling → Tap Auto Leveling. Once auto leveling is complete, the printer is ready for use.