Figure 20. Expansion unit ac power and OCA power LEDs

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.

Figure 21. Fan fault LED

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.

20Power Systems: Power supplies for the 9117-MMB or 9179-MHB

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IBM 9179-MHB, 9117-MMB manual Expansion unit ac power and OCA power LEDs