How to remove the charcoal filter.

To remove the charcoal filter, first disconnect power at the main fuse or circuit breaker, or pull the plug.
Remove the top grille by removing only the two screws that hold it in place. You may need to open the cabinet doors to remove the screws.
Press back on the top of the filter with both hands until the filter lays down almost horizontal.
Lift the filter at the bottom until it comes free of the tabs. Slide the filter down and out.