At this step, you can double check that it is in fact your inverter that is bad. There may be an obvious sign, like a scorch mark on the PCB.

Once certain the inverter is the issue, there are four remaining harness points to unplug.

Once the harnesses are unplugged, remove the four screws keeping the board fixed in place.

There are two plastic pins that further secure the inverter. Take a pair of pliers to squeeze these down and gently lift the board off the housing.