Remove the eddy current coil
Step 1: Loosen the Part Cooling Fan
Remove the 3 screws holding the part cooling fan: one on the left, one on the right, and one on the back that is shared with the tool head rear cover.

Step 2: Remove the rear cover of the toolhead
Remove the two screws above the rear cover of the toolhead, then lift open the module interface cover.

Step 3: Disconnect the eddy current coil connector from the tool head board
Carefully tear off the acetate tape on the eddy current coil plug.
Pinch the base of the plug and apply force in a direction perpendicular to the PBC board to disconnect the eddy current coil plug.
The following video shows the process of removing the connector.

Step 5: Remove the hotend fan and eddy current coil
After removing the hotend, unscrew the two hotend fan screws and take out the fan. This step is required only to create more room to work.
Remove the two screws holding the eddy current coil, and carefully bypass the wiring as shown by the red arrow.
The wires run under the tool head through wire management clips. Remove the hot-end fan and eddy current coil wires from the cable trough in order, then take out the old eddy current coil, as shown in the video below.

Install the new eddy current coil
Step 1: Install the new eddy current coil and hot end fan
Insert the wires for the eddy current coil and hot-end fan into the cable management slot, following the sequence shown in the video.

Step 2: Calibrate the eddy current coil position (important)
After reinstalling the hot end, fold a piece of paper in half and slide it into the gap between the hot end and the eddy current coil. You should feel slight friction, but the paper should still move freely. This indicates the gap is roughly 0.2–0.3 mm, which is the correct spacing.

Step 3: Install the hotend fan
Position the fan so that the labeled side faces the hot end and align it with the screw holes (see the red and yellow circles in the figure).
Fold the fan cable into the groove shown in the illustration, then install the fan.
Secure the fan with the two screws shown below.

Step 4: Install the hot end
he next step requires the installation of the hotend. Please refer to this H2S Hotend Installation tutorial:https://wiki.bambulab.com/en/h2s/maintenance/replace-silicone-sock-and-hotend to install it, then move to the next step.

Step 5: Connect the eddy current coil connector on the TH board
Align the plug with the socket on the tool head board, making sure the metal contacts face the back of the chassis. Press the plug in fully, and tuck any extra cable neatly under the tool head board.