Samsung NQ50C7935ES oven

Ive recently looked at an oven which was sold from display, complaint no heat – went to look and found the wiring was taken off all the elements taped up together guess to show it on demo in showroom but not noted. the oven and base element were obvious as they were limited on length and location. The issue i have is grill double grill 4 connections across the the terminals two are straight insulated tags two are angled – I’ve tested mains supply but the not sure if the inner or the outer ring is conventional oven position or the grill and if both come on with the grill, anyone know the positions or have wiring diagram to confirm.