¶ TE2761：SYNC signal contact poor communication failure
¶ Applicable model:
K2 Plus
¶ Why does this prompt appear?
SYNC signal fails self-check; It has been found that poor contact of SYNC signal can cause the hot bed to hit the nozzle during auto-leveling, resulting in Z motor error code 2789. Possible causes include:
- Hotend cable connection issues, poor connection or damage.
- Communication bus (lower computer connecting to adapter board) wiring issues, poor connection or damage.
¶ How to solve:
¶ Wiring issues:
Check the wiring of the hotend cable and communication bus, ensure connections are secure and undamaged. If wiring issues are found, reconnect and confirm stable connection.
¶ Cable damage:
If wiring is normal but the machine still doesn't work properly, the hotend cable or communication bus may need to be replaced.
¶ General troubleshooting steps:
Check the wiring of the hotend cable, ensure there's no loose connection or damage.
If wiring issues are found, repair and confirm stable connection.
If wiring is normal but the machine doesn't work properly, the cable needs to be replaced.
Click Z-axis homing to confirm if normal operation is restored.