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Those pictures are both from the range I have. It is not a false smooth bottom. There is the eight pass calrod like the second picture shows sealed under it. I just looked where the drawer is and you cannot access the element there either. I think you have to take the whole oven apart or there may be some access from the back. I do not want to scratch my new floor or I would slide it out and look. There is nothing in the manual.
There is a warning message in the manual stating not to cook anything by sitting it directly on the bottom.
Yes it does do a nice job at browning food. on conventional, convection(uses the fan and the hidden element only), true-convection( uses the fan and the fan element only), and convection roast ( uses the fan and the broiler element only). With true convection I can bake three cookie sheets at a time and don't have to rotate them.
I have preheated with the convection only, then switched to the conventional. My convection has the element in it.
A smoothtop unit is very easy to replace. The whole cooktop tilts up and the units are held in place with brackets and plugged into a wire harness that feeds down from the backsplash. I had a small 1 inch scratch on my cooktop after a few months and GE replaced the whole thing as a defect and I helped the guy replace it. It would be a very easy DIY job. I have the old cooktop in the garage if anyone needs one.