Cem+ error

Hi

On the display of the CEM+, I see this error message:

BACKPLANE COM ERR

AF CARD 1 ERROR

AF CARD 2 ERROR

AF CARD 3 ERROR

AF CARD 4 ERROR

The blu LED on top of the rack are off.

The fan turn

The Dmx are good ( the led DMX a are ON)

Please, same ideas?

Thank in advanced

Riccardo

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