¶ What does it look like
Printhead anomaly error indicates an abnormal connection of the printhead adapter board (linking the printhead and the extruder).
¶ Troubleshooting steps
Check the connection status or wiring between the motherboard and the printhead adapter board.
¶ 1. Check if the CAN bus connection between the motherboard and the nozzle is normal.
NOTE: POWER OFF the printer when checking for abnormalities.
Step 1. Loosen the 2 screws at the nozzle part and re-insert the connection.
Step 2. Remove the bottom cover and re-plug the Type-C port of the machine.
Note: You can refer to the video to remove the bottom cover.
https://youtu.be/zC8LA6qXsZ8?si=mflg46uAwGhNVKHL
Step 3. Re-plug the wiring here. If there is solidified glue, you can remove it directly.
Step 4. Power on the machine to check if the error still occurs.
¶ 2. Check if there are any obvious scratches or damages on the wiring.
If so, replace the damaged wiring with a new one.
The picture shows a damaged wiring.
¶ 3. Power on the Printer and check if the indicator light on the motherboard is flashing.
Generally, about 20-30 seconds after powering on the printer, the indicator light will start to flash. If not, refer to how-to-replace-the-motherboard to replace the old motherboard with a new one.
¶ Measure whether the resistance of the extruder communication board is around 0.700Use using the buzzer-resistance range of a multimeter.
If you have a multimeter and are proficient in using it, you can try the following measurement methods. If not, you can ignore this option as it is relatively difficult.
NOTE: POWER OFF the printer when the test is carried out.
If the measurement of the extruder communication board shows no problem, use the buzzer resistance range of a multimeter to measure whether the resistance of the mainboard is around 0.750. If the measured data of these two parts varies significantly, the mainboard is faulty. Refer to how-to-replace-the-motherboard for the motherboard replacement.
If both the motherboard and the extruder communication board show no problems in the measurement, replace the CAN bus.