A refrigerator that has stopped cooling can still have a working interior lamp, so the light alone says little about the condition of the appliance. Before removing a panel, copy the model and serial information from the rating plate, usually inside the cabinet or near the door frame.
Note any display code, recent outage, unusual noise, or change in operating pattern.
The exact model matters because connectors, sensors, control boards, and access panels can vary between similar-looking units. For a model-specific reference, a frigidaire refrigerator service manual is more useful than generic instructions when its model designation matches the appliance.