¶ Compatibility
This article applies to the following models and modules. Please pay attention to the details when referring to it:
- Model: J1
- Module: Printing module
¶ Issue Description
- The screen shows an alert: "Hotend detection abnormal; the hotend may not be installed correctly." Reinstallation was attempted following the manual, but the same message still appears.
¶ Possible Causes
- The hotend is not properly installed
- The hotend or the hotend adapter board is faulty
- The FFC cable is bent or damaged
- Poor contact between the FFC cable and the FFC adapter board
- The printhead adapter board is faulty
- The FFC adapter board or the mainboard is faulty
¶ Troubleshooting Steps
¶ 1. Try reinstalling the hotend multiple times
Please try reinstalling the hotend a few more times. When doing so, make sure to insert it firmly all the way to the top. Also, ensure that the cable on the hotend is properly seated in the groove, as improper placement could lead to poor contact with the adapter board.
¶ 2. Try using a spare hotend
If you have a spare hotend available, try replacing it to see if the issue persists. If the problem disappears after the replacement, it's likely that the original hotend is faulty.
¶ 3. Check the FFC cable for bends or damage
Inspect for any bending or damage to the FFC cable (ribbon cable) and ensure that the connection between the FFC cable and the PCB is neither loose nor skewed.
- The images below shows a bent FFC cable:
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¶ 4. Check the connection between the FFC cable and the adapter board
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Make sure both ends of the FFC cable are securely connected to the adapter board, with no looseness or poor contact.
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Try gently pressing on the FFC adapter board to see if the error message disappears.
¶ 5. Swap the connections of the left and right FFC cables on the FFC adapter board.
Please be especially careful not to bend the FFC cable or damage the connector on the FFC adapter board during this step.
Assuming the original issue is that the left hotend shows a detection error while the right one works normally:
- If, after swapping the ports, the left hotend still shows a detection error, the issue is likely with the left printhead or the hotend itself.
- However, if the left hotend starts working after the swap, the problem is likely with the FFC adapter board or the main controller board.
¶ Reach out to Snapmaker Support
After following the troubleshooting steps, if you find it difficult to resolve your issue, kindly submit a support ticket through https://snapmaker.formcrafts.com/support-ticket and share your troubleshooting results with some pictures/videos.
Our dedicated support team will be more than willing to assist you in resolving the issue.