IBM 8688 - page 142

8. Remove the PCI-X board assembly from the I/O board:
a. Remove any adapters and adapter separators that are installed (see
“Installing an adapter” on page 92), unplugging any necessary cables.
b. Release the PCI-X board assembly from the I/O board at the four notches
that secure them together, then lift the PCI-X board assembly off of the I/O
board and set it in a safe place.
PCI-X
Board
PCI-X Assembly
I/O Board
Notches
Tabs
9. Remove the VRM from the I/O board.
10. Remove all screws securing serial ports and video connectors to the back of
the I/O board assembly.
11. Remove the eight screws securing the I/O board to the I/O board assembly,
and slide the I/O board approximately 1 in. (2.54 cm) forward.
132 IBM xSeries 450 Type 8688: Hardware Maintenance Manual and Troubleshooting Guide