Replace the model 285 or 52x power supply

Learn how to correctly replace a power supply with the system power off. Use the procedure in this section to accomplish this task.

Notes:

Do not connect the power cables to the power source until you are instructed to do so.
During normal operation, the secondary power-supply bay must have either a power supply or filler panel installed for proper cooling.

To replace a power supply complete the following steps:

If your system is managed by the Hardware Management Console (HMC), use the HMC to complete the steps for replacing a power supply. For instructions, see Replace a part using the Hardware Management Console.

To replace a power supply, do the following procedure:

If you have not previously removed the power supply, do so now. See Remove the model 285 or 52x power supply.
Open the power supply handles A on the top of the new power supply as shown in Figure 1 or Figure 1. For a model 285, see Figure 3.
Grasp the power supply handles and carefully insert the new power supply A into the power supply bay. For a model 285, see Figure 3.
Slowly press the power supply into the system. The power supply handle tabs A will snap into place, which indicates that the power supply is seated correctly and locked into position B.
Figure 1. Replace a power supply in a rack-mounted system unit

Figure 2. Replace a power supply in a stand-alone system unit

Figure 3. Replace a power supply in a model 285 stand-alone system unit

Figure 4. Replace a double wide power supply in a stand-alone system unit
Reconnect the power cable at the back of the power supply. If you have just replaced a power supply, reconnect the power cable to the new power supply by routing it through the ring, if provided, before you plug it into the back of the server. For an example, see Figure 2 in Replace the model 9116-561 or 570 power supply with power on.
Note the state of the light-emitting diodes (LEDs) on the power supply. For information about the states of the power supply LEDs, read Power supply LEDs. If the LEDs indicate that the power supply is operating normally, continue to the next step. If not, remove the power supply from the system and repeat the procedure starting with step 2. If, after repeating the procedure, the power supply is not operating normally, contact your service provider.
Replace the service access cover. For instructions, see Install the service access cover on the model 285, 51x, 52x, 55x, 710, or OpenPower 720.
If you are working on a rack-mounted system unit, ensure that the system cables are routed correctly through the cable-management arm.
Figure 5. Cables routed through the cable-management arm
If you are servicing a rack-mounted model 520 system unit, place the rack-mounted system or expansion unit in the operating position. For instructions, see Place the rack-mounted system or expansion unit in the operating position.
Reconnect the cables at the back of the system.
On a rack-mounted system unit, close the back rack door.
If the system was stopped, Start the system or logical partition.