AGP issues, but only have one AGP card and system

[ZBLongladder]

I recently picked up a Intellistation M Pro type 6889, and it arrived horribly packed and literally sticking out the side of the ripped box. It mostly seems OK (other than some of the plastic clips on the side panel), but the AGP video card didn't work. A PCI video card does work, but that leaves me unsure of whether it's the card, the slot, or both that are bad. Is there any way to test without buying another card or system? I have a multimeter, and I wouldn't be opposed to picking up an oscilloscope if that would be helpful.