How to Troubleshoot & Replace Whirlpool AP4301303 / W10120840A Charcoal Filter

Just replaced 

Replaced the part in about 2 minutes. 

Easily. 

Received part as ordered.promtly. Worked fine. 

Added a charcoal filter to microwave. 

Replaced filters 

I order my parts from appliance part pros extant service delivered parts over night I was impressed removed all the screws that held the base in place when base came down all the lights were exposed replaced the bulbs put it all back together now we have lights and new filters... 

Replaced filters 

Just needed new filters for microwave hood. Also needed new dishwasher basket. Easy repairss. I was really impressed at the speed of the delivery. 

What a deal! Genuine factory replacement filters at half the price noted on the manufacturer's website. Two minutes to order online. Three days to wait for receipt of shipment. Two minutes to install. Put savings back into pocket. Thank you, Appliance Parts Pros.