Remove the Power Supply Backplane
Caution - The system supplies power to the power board even when the server is
powered off. To avoid personal injury or damage to the server, you must
disconnect power cords before servicing the power distribution board.
This is a cold service procedure that must be performed by qualified service
personnel. The system must be completely powered down before performing this procedure. See
Cold Service, Replaceable by Authorized Service Personnel for more information about this category of service procedures.
- Prepare for servicing:
- Attach an antistatic wrist strap.
- Power off the server and unplug power cords from the power supplies.
See Removing Power From the Server.
- Extend the server to the maintenance position.
See Extend the Server to the Maintenance Position.
- Remove the top cover.
See Remove the Top Cover.
- Pull both power supplies at least part way out of the chassis, to
disconnect them from the power supply backplane.
See Remove a Power Supply.
- Remove all memory risers or filler panels.
See Remove a Memory Riser.
- Remove the air divider by pulling it up and out of the chassis.
- Remove the ribbon cable connecting the power supply backplane to the motherboard.
- Remove the power supply backplane by completing the following tasks.
- Remove the screw that holds the power supply backplane cover in place and
remove the power supply cover.
- Remove the four bus bar screws securing the motherboard to the power supply
backplane and remove the motherboard to gain access to the bus bars.
This will also involve disconnecting all cables that connect the power supply backplane,
drive backplane, and fan board to the motherboard.
See Remove the Motherboard.
- Disconnect the AC cables from power supply backplane and lift the backplane out
of the chassis.