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Note: If you replaced a power-supply fan as part of this procedure, note the state of the fan fault
LED (B) shown in Figure 21. If the LED is off, indicating that both fans are operating normally,
continue to the next step. If not, remove the power-supply assembly from the expansion unit and
repeat the procedure starting with step 5 on page 17. If, after repeating the procedure, the
power-supply fan is not operating normally, contact your service provider.
10. Verify the installed part, as described in Verifying the installed part.
11. Close the front rack door.
Continue with any other service actions you want to perform.
Figure 20. Expansion unit ac power and OCA power LEDs
Figure 21. Fan fault LED
20 Power Systems: Power supplies for the 9117-MMB or 9179-MHB