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What would cause a fault light on a 140CRA93100?

The fault light on the CRA module indicates that the card is not seeing one or more of the IO modules configured for the drop. It could be that a module is in the wrong slot/missing all together or that it has failed. If the IO module is in the backplane and is healthy and recognized, the word "Active" should appear at the top of the module. If none of the IO modules are "Active" it could be that the address switches at the back of the CRA are not properly set for that drop location.

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