Servicing The Power Supply Backplane - Sun Microsystems Sun Fire X4450 Service Manual

5. Connect the power distribution board ribbon cable to the Power Supply Unit
backplane. [4]
6. Install the power supplies.
Slide each power supply into its bay until it locks into place.
7. Install the motherboard assembly.
See
Installing the Power Distribution Board
FIGURE 5-9
5.6

Servicing the Power Supply Backplane

In the Sun Fire X4450 server, the power supply backplane carries 12V power to the
power distribution board.
5-14 Sun Fire X4450 Server Service Manual • November 2009
Section 4.8.2, "Installing the Motherboard Assembly" on page 4-32.