¶ Fault Description
When the printer is unloading or changing filament during printing with AMS, the cutter is used to cut the filament before pulling it back. During cutting, the toolhead slowly moves towards the cutter plunger, presses the cutting handle, and drives the cutter to cut the filament. After the filament is cut, the cutter handle will automatically spring back. The cutter handle is shown in the following figure:
There is a magnet inside the cutter handle, and a Hall sensor at the corresponding position of the extruder filament sensor assembly. The printer uses the Hall sensor to detect the position of the cutter to determine whether it has successfully sprung back. When it is detected that the cutter handle has not sprung back to its original position within two minutes, a prompt will pop up on the screen.
¶ Troubleshooting
¶ Troubleshooting Measures
Users can adjust the order of each troubleshooting measure as appropriate.
¶ Step 1 Check the Cutter Status
When the screen shows that the cutter is stuck, first check whether the cutter handle is really stuck inside the toolhead.
If the cutter handle is found to be in the original position and not stuck, jump to Step 2;
If the cutter is indeed stuck and has not automatically sprung back, jump to Step 4.
¶ Step 2 Check the Magnet, Sensor, and Connection Cables
It is possible that the handle may spring back after being stuck for a while, depending on the material you are printing. This may occasionally happen when printing Support or silk filaments. Just click "Retry". If the prompt no longer appears, then you can continue printing.
If the problem still exists after retrying, check if there is any foreign matter on the Hall sensor. You can clean the positions of the magnet and the Hall sensor and retry; if the Hall sensor malfunctions or the cable is loose, it may also cause false detection. You can reconnect the Hall sensor cable and retry.
¶ Step 3 Replace the Extruder Filament Sensor Assembly/Extruder Filament Sensor Board
If clicking "Retry" multiple times still cannot solve the problem, the Hall sensor may be faulty. Please try replacing it with a spare extruder filament sensor assembly to see if the problem still exists.
¶ Step 4 Check for Hotend Clogging
When the hotend is clogged, the pressure of the filament between the extruder and the hotend is too high, which will cause the blade to be stuck and unable to spring back smoothly. In this case, you need to remove the hotend and clean it. Please refer to this wiki to learn how to clean the hotend: H2S Hotend Clog Cleaning
¶ Step 5 Replace the Cutter
If there is no clogging but the cutter is still stuck, it may be that the friction between the two sides of the cutter and the inner wall of the extruder is too large to spring back smoothly. Please try replacing the cutter.
¶ Equivalent Codes
The following HMS codes represent the same type of issue.
| HMS Code | Description |
|---|---|
| 0700-4500-0002-0003 | The filament cutter handle has not been released. The handle or blade may be jammed, or there could be an issue with the filament sensor connection. |
| 1800-4500-0002-0003 | The filament cutter handle has not been released. The handle or blade may be jammed, or there could be an issue with the filament sensor connection. |
¶ 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, we will answer your questions and provide assistance.
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