Oracle X7-8 Service Manual page 229

Replace the Midplane Assembly
8. Loosen the four captive screws that secure the left side (from the front) access
panel and remove the panel.
The opening behind the access panel provides access to five cables (four 20-pin PS cables
and one 8-pin cable for the AC power indicator LEDs) that are routed through the server and
are connected to the backside of the midplane assembly. To remove the midplane assembly,
disconnect these connectors. As an aid, a label on the side of the chassis shows the arrangement
and labeling of the five connectors.
Servicing Components 229