Upgrading Your Server 9-19
Replacement of Defected Power Supply Unit
The power supply unit should be replaced only when it is defected.
IMPORTANT: Do not remove any power supply unit if it operates
normally.
NOTE: When the server is equipped with two power supply units and
one of them operates normally, the other defected power supply unit
can be replaced under the system operation (or in the power-on status).
In this case, skip step 2 in the procedure below.
1. Check the POWER FAIL lamps (amber) of the power supply units on the rear face and
determine which module needs to be replaced.
2. Shutdown the system and power off the server.
3. Disconnect the power cord from the failed power supply unit.
4. While pressing down on the lever, grasp the handle and carefully pull the power supply
unit out of the bay.
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5. If you are not going to install a replacement power supply unit, you must install a blank
cover you removed in step 2 of installation procedure to vacant slot.
IMPORTANT: To maintain the cooling effect in the server, install the
blank cover in the vacant slot of the power supply unit bay.
6. Install the power supply unit referring to steps 3 to 9 of the installation and make sure that
the power supply unit is installed securely.
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