The filament buffer is installed in the printer’s top cover and consists of two sliders, two springs, and a buffer connection board.
The spare parts for the filament buffer include the following:
Filament buffer * 1
BT3x8 screw * 4
The AMS is malfunctioning, and upon inspection, the filament buffer is visibly damaged.
After analysis by Bambu Lab technical support, it is confirmed that the filament buffer needs to be replaced.
IMPORTANT!
It's crucial to power off the printer before conducting any maintenance work, including work on the printer's electronics and tool head wires. Performing tasks with the printer on can result in a short circuit, leading to electronic damage and safety hazards.
During maintenance or troubleshooting, you may need to disassemble parts, including the hotend. This exposes wires and electrical components that could short circuit if they contact each other, other metal, or electronic components while the printer is still on. This can result in damage to the printer's electronics and additional issues.
Therefore, it's crucial to turn off the printer and disconnect it from the power source before conducting any maintenance. This prevents short circuits or damage to the printer's electronics, ensuring safe and effective maintenance. For any concerns or questions about following this guide, we recommend submitting a technical ticket regarding your issue and we will do our best to respond promptly and provide the assistance you need.
Use an H2.0 Allen key to loosen 1 fixing screw (BT2.6x8), and then remove the AP board cover from the side near the front door.
If the printer is connected to AMS, you will need to disconnect the 6-pin cable.
Note: If it is an H2DL printer, you also need to disconnect the tube. Press the pneumatic connector of the built-in air pump to pull out the tube.
Use an H2.0 Allen key to remove the 4 fixing screws (BT3x8) securing the filament buffer.
Note: When removing the fixing screws, hold the buffer with your hand to prevent it from falling.
Use an Allen key to pry the side of the cable;
Disconnect the cable by carefully prying out the connector.
Use an H2.0 Allen key to tighten the 4 fixing screws (BT3x8).
Note: Before installing the AP board cover, it is necessary to check whether the cables are obstructing the PTFE piping. Avoiding such obstruction will prevent any interference with the subsequent installation of the PTFE piping.
First, snap the AP board cover back from the side close to the back of the printer, press the two places indicated by the arrows into place, flush with the buffer on the right side and flush with the cable cover on the bottom, and then tighten a fixing screw (BT2.6x8) using an H2.0 Allen key.
You can refer to this Wiki to remove the H2D rear panel:
Use an H2.0 Allen key to remove one set screw (BT3x8), then pull the purge chute downward until the two latches of the purge chute are visible, then pull the purge chute outwards.
In addition to the screws on the top of the purge chute, there are also two buckles on the bottom lining for fixing.
Disconnect the Buffer cable from the MC board, then disconnect the Buffer cable from the buffer, and pull the cable out of the left inner lining.
Note: When installing the purge chute, it is necessary to pay attention to buckling the two sides of the purge chute to the outside of the lining. If the buckle on the inside may not be installed normally.
You can refer to this Wiki to install the H2D rear panel:
Power on the printer and initiate a print using the AMS to check if it prints normally. If the print completes successfully, the replacement is successful.
If unsuccessful, check if the buffer cable and PTFE tubes are correctly connected and try again.
If the issue persists, contact Bambu Lab technical support for further assistance.
New filament buffer
H2.0 Allen key
Specifications and quantities of screws involved in replacing the H2D filament buffer (it is recommended to keep the removed screws properly to avoid loss):
Specification | Image | Use | Position | Quantity | |
---|---|---|---|---|---|
BT3x8 | Fix the filament buffer | ![]() |
4 |
We hope the detailed guide provided has been helpful and informative.
If this guide does not solve your problem, please submit a technical ticket, we will answer your questions and provide assistance.
If you have any suggestions or feedback on this Wiki, please leave a message in the comment area. Thank you for your support and attention!