9-11
Replacing a Failing Power Supply Unit
R
er supply unit operating normally.
eplace only a failing power supply unit.
IMPORTANT: Do not remove a pow
NOT E: 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
syste
m operating (power-on state). (Skip step 2.)
1. Check th
The lamp
2.
3.
Wh refully pull the power supply unit out of the power
sup
it and/or connector, do not tilt or twist
e POWER lamp on the power supply unit and determine which unit needs to be replaced.
of the failing power supply unit is off.
Shutdown the system, and turn off the server.
ile pressing down on the locking tab, grasp the handle and ca
ply bay.
IMPORTANT: To avoid damaging the power supply un
the unit as you pull it from the power supply bay. Use even, steady force to remove the unit.
4. If you are not going to install a replacement power supply unit, you must
of installation procedure to vacant slot.
IMPORTANT: To maintain the cooling effect in the server, install
install a blank cover you removed in step 2
the blank cover in the vacant
slot of the power supply bay.
5. Install the new power supply unit taking steps 3 to 6 of "Installation", and con
installed normally.
firm that the power supply unit is
NOTE: If one of the three or four power supply units of the server is replaced while the power is
on, the POWER lamp of the new power supply unit goes on. (If it is replaced while the power is
off, th power is turned on.)
e lamp goes on after the
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