¶ Issue Description
When unloading or changing filament, the toolhead slowly moves toward the cutter push rod, compressing the cutting rod and driving the blade to cut the filament. After the cutting action is completed, the cutting rod will automatically rebound.
There is a magnet inside the cutter rod, and a Hall sensor is located in the corresponding position of the extruder. The printer uses the Hall sensor to detect the position of the cutter rod to determine whether the cutting action is completed.
If the toolhead moves a certain distance but the Hall sensor detects that the cutter rod has not moved to the target position, this error message will pop up:
- 07FE-4500-0002-0002 / 18FE-4500-0002-0002: Abnormal travel of the left cutter handle
- 07FF-4500-0002-0002 / 18FF-4500-0002-0002: Abnormal travel of the right cutter handle
Common fault phenomena include:
-
During homing or leveling, the motor may fail to drive the heatbed to make contact with the nozzle on the toolhead.
-
During homing or leveling, the motor continuously drives the heatbed to press against the nozzle, causing excessive Z motor load.
-
During the printing process, the heatbed encounters resistance while moving along the Z-axis.
Possible causes of this error:
- Filament cutter stopper gear misalignment.
- X/Y motor lost steps, or X/Y axis not being homed.
- Loose Hall sensor connection.
- Abnormal link between the Hall sensor and TH board.
¶ Troubleshooting
¶ Tools, Equipment and Materials
- Tweezers (flat-head)
- H2.0 hex screwdriver
- H1.5 hex screwdriver
¶ Fault Isolation Process
- Check if the filament cutter stopper gear is misaligned. If misaligned, repair the gear slip.
- Check if X/Y motor lost step.
- Check whether the filament cut Hall sensor cable is loose. If it is, reinstall it properly.
- If the above steps do not resolve the issue, there may be a fault in the link between the Hall sensor and the TH board. Please submit a work order and upload logs.
¶ Solutions
Users may adjust the order of these solutions as needed.
¶ Step 1: Check and repair gear misalignment
- Refer to this Wiki: Filament cutter stopper replacement and tooth jumping repair guide
- Resume printing. If the filament cut still fails, proceed to Step 2.
¶ Step 2: Check if X/Y motor lost step
If the printed model does not exhibit layer misalignment due to lost steps, you can temporarily restart the printer to activate the "resuming prints after power outage" function. This will recalibrate the printer and allow the printing process to continue.
If the issue persists, please go to Step 3.
¶ Step 3: Check and fix the loose Hall sensor connection
- Remove the cutter lever on the toolhead
- With the power off, use tweezers to reconnect the Hall sensor cable, ensuring it is securely latched
- Power the machine back on. (Note: As the toolhead might be moved while powered off, resuming the print may affect print quality. It is recommended to start a new print job.)
¶ Equivalent Codes
The following HMS codes represent the same type of issue.
| HMS Code | Description |
|---|---|
| 07FE-4500-0002-0002 | The filament cutter's cutting distance is too large. Possible causes include the filament cutter stopper skipping teeth, motor losing steps, or the XY axis not being homed. |
| 07FF-4500-0002-0002 | The filament cutter's cutting distance is too large. Possible causes include the filament cutter stopper skipping teeth, motor losing steps, or the XY axis not being homed. |
| 18FE-4500-0002-0002 | The filament cutter's cutting distance is too large. Possible causes include the filament cutter stopper skipping teeth, motor losing steps, or the XY axis not being homed. |
| 18FF-4500-0002-0002 | The filament cutter's cutting distance is too large. Possible causes include the filament cutter stopper skipping teeth, motor losing steps, or the XY axis not being homed. |
¶ 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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