Bambu Lab HMS error code 0700-0100-0002-0007 is an AMS detection failure in the 0700-0100 AMS communication subgroup. Suffix 0002-0007 indicates the printer found no AMS unit on the connection bus — a complete absence of detection, as opposed to a partial communication error. The printer expected an AMS to be present (based on its configuration) but none responded.

What the Error Means

Complete AMS detection failure means no communication at all is reaching the printer from the AMS side. This is typically caused by a fully disconnected cable, a powered-off AMS, a blown fuse or failed power supply in the AMS unit, or a printer port that has been damaged. If the AMS was previously working and stopped being detected, a cable fault or power issue in the AMS is the most likely cause.

Step-by-Step Fix

1. Confirm the AMS unit is powered on — check that its status LEDs are lit and it is not in a powered-off or sleep state.
2. Inspect the AMS cable connection at both ends. Disconnect and reconnect firmly to ensure the cable is fully seated.
3. Confirm the AMS cable is plugged into the correct port on the printer rear (some models have multiple ports and specific ports are required).
4. Power cycle the AMS first, then power cycle the printer. Allow both to fully boot before checking the connection status in the printer menu.
5. Test with a different AMS cable if one is available — a completely broken internal conductor will prevent all detection.
6. If you have a second AMS unit, test whether it is detected on the same port to determine whether the fault is in the AMS or the printer port.
7. Look for any sign of the AMS status lights not illuminating, which would indicate a power supply fault within the AMS.

Parts Required

• AMS hub connection cable if cable fault is confirmed
• AMS unit power supply if the AMS has no power (internal fault)

Contact Bambu Lab support if the AMS is confirmed powered and cabled correctly but still is not detected — the AMS hub board may require replacement.