Using the Phillips head screwdriver, remove the vertical-facing 2.1mm Phillips #00 screw that holds the metal bracket in place and set it aside.

With the 2.5mm flathead screwdriver, loosen the horizontal-facing 2.1mm flathead screw that holds the metal bracket in place and set it aside.

When reassembling the device, DO NOT tighten the 2.1mm flathead screw all the way. Tighten the screw until the beamsplitter is held in its proper position and then stop.