Good Afternoon Friend,
I understand that you want to know how to remove the cover on your Frigidaire microwave, model# FGMV205K. There are two different covers that you are able to remove for access to two different light bulbs.
If you are trying to change the Microwave Oven Light for inside your microwave:
1)To replace light bulb, first disconnect power to your microwave oven at the circuit breaker panel or by unplugging it.
2)Remove the louver by removing the three Hood Louver Screws.
3)Push in the upper tabs and pull the louver away from your appliance.
4)Remove the light bulb and replace with a new 20 watt light bulb. DO NOT USE BULB LARGER THAN 20 WATTS.
5)Close the Oven Light Cover by carefully pushing into place. Push the louver back into place (engaging both the bottom and top tabs) and change to hood Louver Screws.
If you are trying to change the light bulbs underneath your Microwave:
1)To replace light bulbs, first disconnect power to your microwave oven at the circuit breaker panel or by unplugging it.
2)To open Light Cover, remove the screw on the light cover.
3)Replace the light bulbs with new 20 watt light bulbs. DO NOT USE BULBS LARGER THAN 20 WATTS.
4)Close the Light Cover and secure with screw removed at step 2.
If further troubleshooting is needed, I ask that you please let me know the error codes displayed on your appliance. Hope this is helpful.