IBM 9117-MMB User Manual page 17

Note: This system is equipped with a second power supply. Before continuing with this procedure,
connect all power sources to the system.
Figure 3. Replacing a power supply
4. Start the system, as described in Starting the system or logical partition.
5. Note the state of the light-emitting diodes (LEDs) on the power supply. For more information, see
"Power supply LEDs" on page 8. If the LEDs indicate that the power supply is operating normally,
that is, the AC input LED and the DC output LED are on solid (not flashing) and the fault/identify
LED is flashing or off, continue to the next step. If not, remove the power supply from the system and
repeat the procedure starting with step 2 on page 4. If, after repeating the procedure, the power
supply is not operating normally, contact your service provider.
Figure 4. Power supply LEDs
5
Power supplies