I have an AP00-A card that was installed with the 2000IVS system 6 years ago. I tried to go into CMD000 and I get "HARD WARE ERROR". In CM08 the card is set properly. The sense wheel is correct and not conflicting. It's still in original slot, 2nd PIM AP6/FPC slot. Lights are on, dip switches are all to the right (Changed switch 2 and 3 to left like SMDR manual says for initializing). I'm wondering if the card is bad, is there any way to find out if the card is bad, or if the card is good and I simply need to make changes in certain commands?