¶ Fault Phenomena:
- Motor does not rotate – When controlling the motor movement via the touchscreen or initiating a print, the motor does not respond and remains stationary.
- Motor stuttering – During rotation, the motor experiences intermittent pauses or stuttering, failing to achieve smooth continuous operation.
- Abnormal noise – Unusual sounds such as "piercing screeching," "dull rumbling," or "metal grinding" occur during operation, clearly distinct from the slight, uniform noise of normal operation.
¶ Fault Causes:
- Poor power connection
- Driver board signal failure
- Resin leakage or curing inside the motor
- Motor burnout
- Anti-backlash nut too tight
¶ Tools Required for Troubleshooting:
- 2.0mm hex screwdriver
- Lint-free cloth
- Lithium-based white grease
¶ Troubleshooting Steps:
¶ 1. Check for cured resin around the motor
a. Turn off the power switch and unplug the adapter.
- If resin is present in the motor area, clean it and try again.
- If no resin is present in the motor area, proceed to Step 2 for further troubleshooting.
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¶ 2. Check the motor connector
a. Turn off the power switch and unplug the adapter.
b. Use a 2.0mm hex screwdriver to remove the screws securing the outer casing, then remove the casing.
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c. Check whether the motor connector is loose, and reconnect the motor connector.
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¶ 3. Lubricate the lead screw and guide rails
a. Turn off the printer power switch and unplug the adapter.
b. Remove the build plate.
c. Use a 2.0mm hex screwdriver to remove the two screws securing the cantilever arm, and support the cantilever arm with your hand while placing it temporarily at the bottom.
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d. Plug in the adapter and turn on the printer power switch.
e. Check whether the Z motor can rotate normally at this point.
- If the Z motor cannot rotate, then one of the following components may be damaged: Z motor / Z motor cable / motherboard. It is recommended to replace all three components simultaneously.
- If the Z motor can rotate normally, then use a lint-free cloth to clean oil and dust from the surfaces of the lead screw and guide rails. Apply lithium-based white grease to the surfaces of the lead screw and guide rails.
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- If the Z motor can rotate normally without the anti-backlash nut installed, and cleaning/lubricating the lead screw and guide rails has been completed, but the motor still cannot rotate normally after reinstalling the anti-backlash nut in its original position, then the anti-backlash nut is faulty and needs to be replaced.