To get at the failed door interlock for our Dyson CR01 washing machine I had to go through the following
Take out the 2 screws at the back of the top lid, and slide if forward.
Take out the 2 screws on top of the front panel, and the 2 screwsw that hold the electronics panel in place.
Then the 2 screws that hold the interlock in place.
You can now pull up and forward the front panel (take out the soap box first)
The interlock assembly is the plastic box you can now pull out. Mind the cables.