The system management software on the host will alert you when the power distribution board (PDB) fails and needs to be replaced.
It is easier to service the power distribution board (PDB) with the bus bar assembly attached. If you are replacing a faulty PDB, you must remove the bus bar assembly from the old PDB and attach the assembly to the new PDB. In addition, you must reprogram the new PDB with the chassis serial number. Contact Sun Service to reprogram a new PDB.You must remove the PDB to access the connector board.
Caution - The system supplies power to the PDB even when the array is powered off. To avoid personal injury or damage to the array, disconnect power cords before servicing the PDB.