I have a Sharp Carousel. I have a Sharp Carousel (R980A) microwave oven. The turntable

Question

I have a Sharp Carousel (R980A) microwave oven. The turntable intermittently doesn't turn. Everything else appears to be fine. I was looking to see if there is a schematic of the motor circuit anywhere. Or if you know where to look/and or replace any items in the circuit that may get it going properly.