Bambu Lab X1E AP/TH Board Troubleshooting


Issue:

  • Hotend temperature registering a non-normal value (0, 236c while ambient, +300c or any abnormal reading while idle when compared to the other temperature values)
  • Swapping out the hotend assembly does not resolve the temperature issue.
  • MicroLidar is offline HMS_0C00-0100-0001-0001
  • Toolhead is malfunctioning HMS_0500-0300-0001-0002

Cause:

  • AP and/or TH board is damaged and needs replacement
  • AP board was just replaced and the printer has not been registered with Bambu or flashed with new firmware.
    • If the printer is not flashed with new firmware, the AP and TH boards will not communicate to each other and maintain the same issues as before.
    • In order to get the printer to flash new firmware, it has to be connected to the internet and the new Serial Number and machine QR need to be sent to Bambu to register on their cloud system.

Solution:

If the AP board has not been replaced yet.

  • Check the AP board for the two LED's, one blinking, one solid on.

  • Check the back of the AP board for damage, the capacitors can burn up during a hotend Hot-swap or print head flood.

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