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Replacing the power distribution board
To replace the power distribution board:
1 Follow the instructions in “Preventing static electricity discharge” on page 41. Make
sure that you turn off the server, then unplug the power cord(s) and all other cables
connected to the server.
2 Follow the instructions in “Opening the server case” on page 42.
3 Follow the instructions in “Removing the power supply air duct” on page 49.
4 Remove the power supply modules by following the instructions in “Replacing a
power supply module” on page 88.
5 Disconnect the main power, CPU power, and power signal cables from the system
board. See “System board” on page 6 for the location of the connectors on the system
board.
6 Disconnect the PCI fan from the power distribution board.
7 Disconnect the power cables from the power distribution board and the hot-swap
backplane.
8 Disconnect the drive cables and drive power cables from the backplane.
8510522.book Page 90 Wednesday, March 16, 2005 11:19 AM