5. For the power supply that you want to remove, slide the cable retention bracket to the open position
(A), and then disconnect the power cable (B) as shown in Figure 8. By moving the bracket to the
open position, you turn the power supply off.
6. Attach the wrist strap.
Figure 7. FRU fault and identify LED
Figure 8. Disconnecting the power cable from the front of an expansion unit
10 Power Systems: Power supplies for the 9117-MMB, 9117-MMC, 9179-MHB, or 9179-MHC