Removing the Toolhead Cable
Step 1: Remove the PTFE Tube Bracket, Filament Buffer, and Rear Panel
Refer to the disassembly section of the guides below to remove the PTFE tube bracket, filament buffer, and rear panel in sequence:
Replace the PTFE tube bracket: https://wiki.bambulab.com/en/p2s/maintenance/replace-ptfe-tube-bracket
Replace the Filament Buffer : https://wiki.bambulab.com/en/p2s/maintenance/replace-filament-buffer
Replace the Rear Panel: https://wiki.bambulab.com/en/p2s/maintenance/replace-rear-panel

Step 2: Remove the TH board
Refer to the wiki page Replacing the Toolhead Circuit Board: https://wiki.bambulab.com/en/p2s/maintenance/replace-th-boards-and-fpc-cable to remove the TH board.
When removing the toolhead housing, only the toolhead rear cover should be removed.

Step 3: Remove the AP board cover
You can refer to this wiki to remove the AP board cover: Replacing the AP Board Cover: https://wiki.bambulab.com/en/p2s/maintenance/replace-ap-board-cover-and-led-light-left

Step 4: Remove the Toolhead Cable
Open the cable chain bracket and remove the buckle from the cable chain.
Rotate the cable chain bracket to release the toolhead cable from it.
Disconnect the toolhead cable from the MC board, release it from the two clips on the frame one by one, and then pull it upward to remove it.
Installing the Toolhead Cable
Step 1: Connect the Toolhead Cable to the MC Board
Pass the end of the toolhead cable that connects to the MC board through the through-holes on the top of the frame and the liner.
Connect the toolhead cable to the MC board and arrange the cables neatly.

Step 2: Install the Toolhead Cable Into the Cable Chain
Secure the toolhead cable into the cable chain.
Starting from the toolhead side, install the cable chain clip onto the 12th section of the cable chain.

Step 3: Install the TH board
Refer to the wiki page Replacing the Toolhead Circuit Board" to install the TH board and toolhead housing. https://wiki.bambulab.com/en/p2s/maintenance/replace-th-boards-and-fpc-cable

Step 4: Install the AP cover
You can refer to this wiki to remove the AP board cover: Replacing the AP Board Cover | Bambu Lab Wiki https://wiki.bambulab.com/en/p2s/maintenance/replace-ap-board-cover-and-led-light-left

Step 5: Install the Rear Panel, Filament Buffer, and PTFE tube bracket
You can refer to the installation section of the Wikis below to install the rear panel, filament buffer, and PTFE tube bracket in sequence.
Replace the Rear Panel https://wiki.bambulab.com/en/p2s/maintenance/replace-rear-panel
Replace the Filament Buffer https://wiki.bambulab.com/en/p2s/maintenance/replace-filament-buffer
Replace the PTFE Tube Bracket https://wiki.bambulab.com/en/p2s/maintenance/replace-ptfe-tube-bracket