Note: When you remove a power supply with the system power turned on, an error is logged. No
action is required for this error.
If you want to replace the power supply you removed, see “Replacing the 9117-MMB, 9117-MMC,
9179-MHB, or 9179-MHC power supply with the power turned on” on page 6.
Replacing the 9117-MMB, 9117-MMC, 9179-MHB, or 9179-MHC power
supply with the power turned off
Learn how to replace a power supply with the system power turned off.
If your system is managed by the Hardware Management Console (HMC), use the HMC to replace a
power supply. For instructions, see Exchanging a part by using the Hardware Management Console.
If your system is managed by the IBM Systems Director Management Console (SDMC), use the SDMC to
replace a power supply in the server. For instructions, see Replacing a part by using the Systems Director
Management Console.
If your system is not managed by an HMC or SDMC, complete the following steps to replace a power
supply in a system while the system power is turned off:
1. To remove the power supply, see “Removing the 9117-MMB, 9117-MMC, 9179-MHB, or 9179-MHC
power supply with the power turned off” on page 1.
2. Align the power supply with the bay and slide the new power supply into the system until it locks in
place.
3. Connect the power cable A to the power supply.
Figure 2. Removing the power supply
4 Power Systems: Power supplies for the 9117-MMB, 9117-MMC, 9179-MHB, or 9179-MHC
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