[USR-TC] Problem with Hiper ARC card

Dear All, I have problem in Hyper ARC in TC-1000 -70 amp chasis.when i try get access in it through console i can't get access in it and at that moment RN/FL LED becomes Red .But sometime I can & at that moment the RN/FL LED becomes Green. I do appreciate any suggestion help from this list. Thanking you Hafiz Ahmed