Left Joy-Con 2 Midframe Installation

Make sure the locking flap is flipped up on the trigger cable's ZIF connector.

Position the trigger button board so its ribbon cable is aligned with its ZIF connector on the board.

Use tweezers or your fingers to gently slide the ribbon cable into its ZIF connector.

Flip the locking flap down to secure the cable.

Align the midframe with its screw holes on the outer edge of the controller.

Use tweezers or your fingers to set the bottom edge of the trigger button board underneath the tab on the midframe.

Press the board into place so the black peg on the midframe protrudes through the hole on the bottom corner of the board.

Use a JIS 00 driver to install the 3.9 mm‑long silver screw securing the trigger button board.

Align the two springs on the bumper with their two posts on the midframe, and press it into place.

Use a JIS 00 driver to install the three 3.9 mm‑long silver screws securing the midframe.

Align the release button bracket with its screw holes and set it in the frame so it snaps into place.

Use a JIS 00 driver to install the two screws securing the release button bracket:

One 3.9 mm‑long silver screw

One 6.2 mm‑long black screw

Align the trigger button with the top of the controller, with the ZL engraving facing out.

Set the trigger button onto its metal spring. Ensure the legs of the metal spring are seated properly in their channels on the midframe.

Press firmly on the trigger button to snap it into place.

Insert the release button into its bracket.