NEC EXPRESS5800/140He Service Manual page 110

The Server adapts the electronics bay structure. Accordingly, to remove the I/O Board, first
remove the electronics bay from the Server.
1. After making sure that the power of the server is off, remove the AC cables from all the
power units. Then remove the rear access, front access, and PCI access covers.
2. If one or more PCI boards are installed, remove all the PCI boards.
Before removing a PCI board, remove the cables connected to the board (if applicable).
NOTE: Always insert the PCI cards into the original slots
on the new I/O Board without changing the installation
positions.
Before removing the PCI board, note the installation
position and put a label indicating the installation position
on the PCI board.
3. Remove the fans, fan cage, and power cage.
4. Pull out the A-BMC cable connected to the I/O Board.
[Electronics bay]
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