Fujitsu PRIMERGY RX4770 M5 Upgrade And Maintenance Manual page 133

▶ Remove the power distribution board together with the power rails (3).
Figure 48: Removing the power rails
▶ Loosen the four screws on the other side of the power distribution board (1)
and put the power rails away.
▶ Remove the power rails (2).
Only the power distribution board must be replaced. Keep the power
rails for the new power distribution board.
Installing the new power distribution board
Figure 49: Installing the power rails
RX4770 M5 Upgrade and Maintenance Manual
Power supply unit (PSU)
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