Remove a Power Distribution Board

1. Power off the system.

   Refer to Completely Power Off the System.

2. Attach an antistatic wrist strap.

   Refer to Perform Static Discharge Procedures.

3. Remove the system from the rack.

   This task involves removing all cables, moving the rack into maintenance position, and then removing the chassis from the rack. Refer to Remove the Chassis From the Rack.

4. Remove the top chassis cover.

   Refer to Access Internal Components.

5. Remove the motherboard assembly.

   Refer to Remove the Motherboard Assembly.

6. Remove both power supplies.

   Refer to Remove a Power Supply.

7. Disconnect the top cover interlock cable from the PDB as shown in panel 1 of Removing the PDB From the Chassis.
8. With a No. 2 Phillips screwdriver, remove the screw that secures the PDB to the chassis as shown in panel 2 of Removing the PDB From the Chassis.
9. Grasp the bus bar and pull the PDB/bus bar assembly away from the connector board as shown in panel 3 of Removing the PDB From the Chassis.

   ---

   Caution - If you are removing the PDB/bus bar assembly to access other components and will return the PDB or bus bar to the system, place them on an antistatic mat when you remove them.

   ---

   
   

   Figure 38 Removing the PDB From the Chassis

   
10. If you are replacing a faulty PDB with a new PDB, remove the bus bar assembly from the PDB by removing the four screws that connect them to each other.