Cisco Systems 4900M manual Installing a Power Supply

Chapter 3 Installing the Switch

Removing and Replacing the Power Supply

Installing a Power Supply

Warning The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device. Statement 1019

Follow these steps to install a power supply:

Step 1 Make sure that the power supply you are installing is not connected to a power source and that a power cord is not connected to the power supply.

Step 2 Loosen the two Phillips-head screws from the power supply filler plate (if a filler plate is present).

Step 3 Remove the power supply filler plate (if one is present) and set it aside.

Caution Use both hands to grasp a power supply.

Step 4 Grasp a power supply handle with one hand. Place your other hand underneath to support the bottom of the power supply.

Step 5 Slide the power supply almost all the way into the power supply bay. Press with both thumbs evenly to correctly seat the power supply into the connections inside.

Step 6 Using a screwdriver, tighten the two captive installation screws on the front panel of the power supply.

Step 7 Make sure the power supply power switch is in the off position (O).

Step 8 Before you connect the power supply to a power source, ensure that all site power and grounding requirements have been met.

Step 9 Plug the power cord or cords into the power supply.

Step 10 Connect the other end of the power cord to a power input source.

Caution In a system with multiple power supplies, connect each power supply to a separate power source. In the event of a power source failure, if the second source is still available, it can maintain maximum overcurrent protection for each power connection.

	Cisco Catalyst 4900M Switch Installation Guide
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