8. Remove the screws that secure the power backplane to the chassis and lift the
power backplane out of the server.
To install a power backplane, complete the following steps:
1. Align the power backplane in the server and secure the power backplane with
screws.
2. Install the power-supply structure and the power supplies.
3. Slide the microprocessor tray in the server and close the microprocessor-tray
levers.
4. Install the memory cards.
5. Install the fans.
6. Replace the top cover.
7. Reconnect the external cables and power cords.
62 IBM System x3850 Type 8864: Problem Determination and Service Guide