¶ Issue Description
The extruder motor, located in the center of the toolhead, is utilized to drive the extruder gears. When the printer is powered on, the extruder motor will run a self-check. When an abnormal motor resistance is detected, the issue must be resolved before printing can start.
Extruder motor control circuit diagram
Possible causes:
- Extruder Motor Failure
- Extruder motor cable is not properly connected
- Abnormality in the TH board driver
¶ Troubleshooting
¶ Tools, Equipment and Materials
- H2.0 hex screwdriver
- H1.5 hex screwdriver
- Tweezers
¶ Troubleshooting Workflow
¶ Troubleshooting Steps
Users may adjust the order of the following steps if necessary.
¶ Step 1. Disassemble the Toolhead to Expose the TH Board and Check the Motor Cable Connection
Refer to the Wiki guide: Replace the H2S Extruder Unit, Steps 1–3, to expose the TH board.
Once exposed, carefully inspect the connection between the extruder motor cable and the TH board. If the connector is loose, reseat it securely before powering on the printer to test functionality.
- If the error no longer appears, the issue is resolved.
- If the error persists, proceed to Step 2.
¶ Step 2. Replace the Extruder Motor
If the cable connection is confirmed to be secure but the issue persists, follow the Wiki guide: Replace the H2S extruder motor to replace the extruder motor.
After replacement, power on the printer again and run a self-test:
- If no error is reported, the issue is resolved.
- If the error persists, continue to Step 3.
¶ Step 3. Replace the TH Board
If the TH board is identified as faulty, replace it by following the official guide: Replace H2S TH Board.
After replacement, power on the printer and verify through self-test. If the error disappears, the problem is fixed.
If the above steps do not resolve your issue, please submit a ticket and upload your printer logs
¶ Conclusion
We hope this guide will provide you with useful information and help you solve problems.
To ensure that you operate safely and effectively, if you have any doubts or questions about any steps in the guide, please contact our Customer Support team before starting the operation.
We are always happy to answer your questions and provide support.
Click here to contact online technical support (service hours 9:00-21:00)
¶ Equivalent Codes
The following HMS codes represent the same type of issue.
| HMS Code | Description |
|---|---|
| 0300-0900-0001-0003 | The resistance of the extruder servo motor is abnormal; the motor may have failed. |