Remove the upper power distribution board

Use this information to remove the upper power distribution board.

1. Make preparations for this task.
   1. Turn off the solution and peripheral devices and disconnect the power cords and all external cables (see Power off the compute node).
   2. If the solution is installed in a rack, remove the solution from the rack (see Remove the server/solution from the rails).
      CAUTION

      To avoid a drop hazard, slide the enclosure out of the rack slowly and steadily. Make sure to grip the enclosure with both hands when pulling it forward on the slide rails and lifting it out of the rack. Use safe practices when lifting.
   3. Remove the components listed below from the enclosure in the following order:

      • Compute node(s) (see Remove a compute node from the enclosure).

      • System Management Module 2 (see Remove the hot-swap SMM2).

      • Power supplies (see Remove a hot-swap power supply).

      • Enclosure cover (see Remove the enclosure cover).

2. Disconnect the interconnect cables for power distribution boards and loosen the captive screws.
   1. Disconnect the two interconnect cables (bundled together as illustrated) from the upper power distribution board (see Power distribution boards and fan cables).
   2. Loosen the three captive screws on the upper power distribution board with a Phillips #1 screwdriver.
      Figure 1. Disconnecting interconnect cables for power distribution boards and loosening captive screws
      
      
3. Remove the upper power distribution board from the enclosure.
   1. Hold the two blue knobs to slightly lift up the upper power distribution board.
   2. Tilt the upper power distribution board at an angle as illustrated.
   3. Lift the upper power distribution board out of the enclosure.
      Figure 2. Upper power distribution board removal