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5.Turn on the power switch.
Note: In a chassis that requires more than one power supply (see “Operational Notes”), you must turn on both units within 2 seconds of each other. If you wait longer to turn on the second power supply, both power supplies will latch off. To correct this condition, turn off both power supplies, wait at least 30 seconds, and turn both power supplies on again within 2 seconds.
Replacing a Power Supply
Required tool: Phillips screwdriver
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1.Turn off the power switch on the supply you are replacing.
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2.Disconnect the power cord from the power outlet and from the power supply.
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