2. Remove the top cover. See “Removing the Top Cover” (page 36).
3. Remove the power supply fan unit from the chassis. See “Removing a Hot-Swappable
Chassis Fan Unit” (page 53).
4. Remove the hot-swappable power supply from the chassis. See “Removing a Hot-Swappable
Power Supply” (page 84).
5. Unplug the power cable and the signal cable from the midplane riser board.
6. Using a torx #15 driver, loosen the one torx screw attaching the power distribution board
to the chassis.
7. Push the power distribution board towards the center of the chassis to release it from the
keyway slots. Pull it off the keyway slots and up and out of the chassis. Figure 4-41 shows
how to remove the power distribution board.
Figure 4-41 Removing and Replacing the Power Distribution Board
Replacing the Power Distribution Board
To replace the power distribution board, follow these steps:
1. Replace the power distribution board over the keyway slots and push it towards the side
of the chassis to lock it onto the studs.
2. Reattach the power distribution board to the chassis bulkhead by replacing the one torx #15
screw. Hand tighten the screw.
3. Plug the power and signal cables back into the midplane riser board.
4. Replace the hot-swappable power supply into the chassis. See “Replacing a Hot-Swappable
Power Supply” (page 84).
5. Replace the power supply fan unit into the chassis. See “Replacing a Hot-Swappable Chassis
Fan Unit” (page 55).
6. Replace the top cover. See “Replacing the Top Cover” (page 36).
86 Removing and Replacing Components
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