for Bambu Lab AMS Mainboard(V2)

Works with specific 3D printer AMS systems matches the AMS center circuit interface V2 version main board improves signal transmission stability compared to earlier versions reduces filament feeding errors or AMS system disconnections Acts as the AMS system’s core circuit board manages key functions ,ensures smooth multi filament printing Delivers reliable data between the AMS system and printer main board avoids signal interference that causes filament jams or printing interruptions Resist wear from long term AMS operation maintains consistent performance for extended multi filament prints.

[Core Control Unit] Serves as the central circuit board to coordinate all internal components for smooth and orderly system operation.

[Precise Signal Transmission] Features multiple dedicated connectors to ensure stable signal transfer between motors sensors and other modules.

[Easy Installation] Comes with reserved interfaces and standard mounting design for quick replacement without complex steps.

[Reliable Operation] Built with durable electronic components to support long hours of multimaterial printing and reduce system failures.

[System Compatibility] Matches AMS system structure perfectly to support normal automatic filament switching and material management.

The AMS Mainboard is the center circuit board of the AMS. It includes a series of connectors through which various functional components are connected by cables.

In the Box

-AMS Mainboard (V2)*1

Compatibility

Works for Bambu Lab AMS

Installation

Replacing the AMS Mainboard

Guide showing the steps for replacing the AMS main board

What is the AMS main board

The AMS main board is the center circuit board of the AMS. It provides a series of connectors through which the various functional components are connected by cables.

When to use

Abnormal voltage, components abnormally hot or burnt out, the communication of a module is abnormal, broken connectors, unrecoverable FW upgrade failed.

Tools and materials needed

H2.0 & H1.5  allen key

Safety warning and Machine state before starting operation

Turn the power OFF to the printer and disconnect the connection of the AMS with the printer.

Operation guide
Step 1 - (Disassembly) Remove the PTFE tube

Open the AMS cover, press the button on the filaments hub and pull out the PTFE tube.

Step 2 - Remove 2 screws

Remove 2 screws.

3.Step 3 - Remove the middle frame module

Flip the middle frame upward, disconnect the bambu bus cable and the power cable, and remove the middle frame module.

4.Step 4 - Disconnect 11 cables

Disconnect all the cables from the connectors on the main board. Make some marks if needed or take pictures of the connections.

Step 5 - Remove the main board

Remove 2 screws, unlock the main board from 4 buckles and then remove the main board.

Step 6 - (Assembly) Install the main board

Install the main board to the middle frame, prefix with the 4 buckles, and then lock in 2 screws.

Step  7 - Connect 11 cables

Connect 11 cables, according to the marks or pictures taken before disconnected.

Step  8 - Install the middle frame module

Pleace the middle frame into the AMS shell, connect the bambu bus cable and the power cable.

Step 9 - Lock in 2 screws

Install the middle frame in place, lock in 2 screws.

Step 10 - Connect the PTFE tube

How to verify completion/success

1. Connect the AMS to printer and power on, confirm that the AMS menu is on.

2. Check the tube bracket, and insert the PTFE tube. Try to pull it out to make sure that

 the tube is well connected.

3. Load filaments to the 4 slots, and confirm that every slot works fine. If you load Bambu Lab official filaments, the filaments' information will be recognized.

If your AMS is not like this, please check the connections. If it still malfunctions, contact the Bambu Lab service team for further assistance.