Couldn't one just claim ignorance? "My *what* isn't 0/0? I don't know what that is, I bought this phone from a friend" etc.
Or would they just use the fact that the que is not 0/0 to deny a FRU? My earpiece speaker died recently and, needless to say, my phone has been rooted many times... I went to the VZW store and was informed that because the D4 is an older model, they can't guarantee another one (even with my TEP insurance) because there simply might not be any left in the warehouse. I'm gonna try fixing the speaker myself, replacement part is on the way...