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PA-MC-8E1+ module AL LED stays on

I have upgraded a 4 port serial card on a flexwan module in a 7600 to a PA-MC-8E1 in the same bay. The module comes up, I can configure 4 of the channels and all data passes without controller or Serial errors. However the AL LED stays on on the module. I have shut down all controllers and removed all cables and the LED still stays on. I have also repeated the no power enable followed by a power enable on the flexwan module and still the LED stays on RED. How can I check if this is an actual error or not.