IBM 8685 Hardware Maintenance Manual - Page 134

8. To install the power backplane, reverse the previous steps. Note: When reinstalling the power backplane assembly, align the assembly with the tracks on the sides of the chassis and align the two holes at the top sides of the backplane over the pins. AC power box Complete the following steps to remove the ac power box . Note: v Read "Before you begin" on page 41. v Read the safety notices at "Safety information" on page 169. v Read "Handling electrostatic discharge-sensitive devices" on page 172. 1. Turn off the server. 2. Disconnect all power cords and external cables from the back of the server. 3. Remove the server cover (see "Removing the top cover (all models)" on page 51). 4. Remove the power supplies (see "Installing a hot-swap power supply" on page 98). 5. Remove the shuttle. Note: The illustrations in this document might differ slightly from your hardware. AC Power box 6. Remove the screw securing the power box to the chassis. 7. Slide the power box toward the front of the server until it comes away from the chassis. 8. Pull up on the four power plugs at the end of the power box cable until they are free of the chassis. 124 xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide