for model 9815xub, the oven light consists of a light bulb cover(clear plastic, sometimes called lens) the light bulb receptacle( pressure mounted against the back wall of the oven ) and the light bulb, standard appliance bulb that screws into the receptacle, the same as the lens, it also screws into the receptacle, twist counter clockwise to remove both the lens and the bulb. as a reference try the following site:
www.partselect.com/ and type your model number in the window, then click on the oven cavity breakdown to view thwe assembly.
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