¶ Issue Description
During the extruder switching process, the extruder switching motor position hall sensor (used to detect the switching motor position) may malfunction, leading to switching failure.
As shown in the following diagram, the sensor is installed on the extruder switching motor position hall effect sensor located at the upper part of the quick change tool interface, and is connected to the extruder hall sensor board together with the left and right extruder idlers hall effect sensor through the position hall conncector, and then connected to the TH board.
Possible causes include:
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The extruder switching motor position hall sensor is defective.
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The TH board is defective.
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The extruder hall sensor board connector is damaged or short-circuited.
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Other hall sensors are defective.
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The left driven rod hall effect sensor is defective.
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The right driven rod hall effect sensor is defective.
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The lifting motor position hall effect sensor is abnormal.
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1 - Extruder Switching Hall Sensor
2 - Extruder Switching Hall Sensor Connector
3 - Extruder hall sensor board FPC
1 - Connection between the extruder hall sensor board and the right filament hall sensor
2 - Connection between the extruder hall sensor board and the left filament hall sensor
3 - Connection between the extruder hall sensor board and the extruder switching hall sensor
4 - Extruder hall sensor board connector
5 - Extruder hall sensor board connector socket
¶ Troubleshooting
Before disassembling the toolhead, ensure the printer is powered off.
If replacing the TH board, extruder hall sensor board, extruder switching hall sensor, or lifting motor hall sensor, perform toolhead switch calibration after toolhead assembly.
¶ Tools, Equipment and Materials
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H2.0 Allen key
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H1.5 Allen key
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Tweezers
¶ Fault Isolation Process
¶ Solutions
Users may adjust the order of these solutions as needed.
¶ Step 1. Disassemble the toolhead to expose the TH connection board
Refer to Steps 1~4 in the Wiki Disassemble the H2D toolhead to expose the TH connection board.
¶ Step 2. Check the status of the peripheral power indicator on the toolhead
The peripheral power supply powers all hall sensors. The peripheral power indicator (referred to as the indicator) is located at the lower part of the TH board and indicates the status of the peripheral power. Normally, the indicator remains lit.
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Power on the printer
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Check the status of the indicator
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If the indicator is lit, the peripheral power supply is normal, but the position hall sensor of the extruder lifting motor is malfunctioning and needs replacement. Proceed to Step 3.
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If the indicator is off, the peripheral power supply is abnormal. Any hall sensor or the TH board in the peripheral power supply chain may malfunction. Proceed to Step 4.
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¶ Step 3. Check for short circuit of the lifting motor position hall sensor
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Power off the printer.
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Disconnect the position hall sensor wires of the lifting motor.
In the exposed state of the TH connection board, use tweezers to disconnect the position hall sensor wires of the lifting motor.
7 - Lifting motor position hall sensor connector 3 - Extruder hall sensor board connector
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Power on the printer
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Check the status of the indicator
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If the indicator turns on, the hall sensor is abnormal. Refer to the Wiki Disassemble the H2D toolhead for replacing the lifting motor position hall sensor.
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If the indicator remains off, proceed to Step 4.
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¶ Step 4. Disconnect the extruder hall sensor board connector and check the peripheral power indicator
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If the indicator turns on, the extruder hall sensor board or its associated hall sensors are short-circuited. Proceed to Step 5 for further troubleshooting.
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If the indicator remains off, refer to Steps 1~8 in the Wiki Disassemble the H2D toolhead to replace the TH board.
¶ Step 5. Check for short circuits in the hall sensors at the front of the extruder
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Disassemble the extruder front cover
Refer to the Wiki Disassemble and install the H2D extruder -
Sequentially check for short circuits in the extruder switching motor position hall sensor, left filament hall and the right filament hall.
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During the check, disconnect the specified hall sensor connector (printer powered off)
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Observe if the indicator lights up (printer powered on)
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If it lights up, the hall effect sensor is abnormal and needs replacement.
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If it remains off, proceed to Step 5.
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¶ Step 6. Replace the extruder hall sensor board and connector
Refer to the Wiki Disassemble the H2D toolhead to disassemble the extruder assembly, remove the screws, and replace the extruder hall sensor board and connector.
If the above solutions do not resolve the issue, submit a ticket and upload the printer’s log files.
| HMS Code | Description |
|---|---|
| 07FE-8100-0001-0004 | The position hall sensor of the Extruder Switching Motor has a short circuit; please check if the Hall sensor is malfunctioning. |
| 07FF-8100-0001-0004 | The position hall sensor of the Extruder Switching Motor has a short circuit; please check if the Hall sensor is malfunctioning. |
| 18FE-8100-0001-0004 | The position hall sensor of the Extruder Switching Motor has a short circuit; please check if the Hall sensor is malfunctioning. |
| 18FF-8100-0001-0004 | The position hall sensor of the Extruder Switching Motor has a short circuit; please check if the Hall sensor is malfunctioning. |
¶ End Notes
We hope the detailed guide provided has been helpful and informative.
If this guide does not solve your problem, please submit a technical ticket, will answer your questions and provide assistance.
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