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6. Power on the server.
The POWER lamp on the power supply units goes on.
7. Confirm, by the STATUS lamp or on the POST diagnostic screen, that there are no errors related to the power
supply units.
See Chapter 8 for details on the error messages.
If the POWER lamps are off, reinstall the power supply units. If the POWER lamps are still off, contact your
service representative.
Replacing a Failing Power Supply Unit
Replace only a failing power supply unit.
IMPORTANT: Do not remove a power supply unit operating normally.
NOTE: If two power supply units work normally while the server contains three or four
power supply units in a redundant configuration, the failing power supply unit can be
replaced with the system operating (power-on state). (Skip step 2.)
1. Check the POWER lamp on the power supply unit and determine which unit needs to be replaced.
The lamp of the failing power supply unit is off.
2. Shutdown the system, and turn off the server.
3. While pressing down on the locking tab, grasp the handle and carefully pull the power supply unit out of the
power supply bay.
IMPORTANT: To avoid damaging the power supply unit and/or connector, do not tilt or
twist the unit as you pull it from the power supply bay. Use even, steady force to remove
the unit.