Install an AC Power Supply

To install an AC power supply, follow this procedure (see Figure 35):

1. Verify that the switch on the power supply faceplate is in the OFF (O) position.
2. Locate the power cord shipped with the router, which should be appropriate for your geographical location (see AC Grounding and Power Cord Specifications).
3. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Prevent Electrostatic Discharge Damage.
4. Grasp the handle on the power supply faceplate with one hand and place the other hand under the supply to support it.
5. Align the rear of the supply with the slide guides inside the chassis and slide the supply into the chassis until it contacts the midplane.
6. Tighten (but do not overtighten) the thumbscrews on the power supply faceplate. Turn both thumbscrews simultaneously and at about the same rate (turning them alternately or at very different rates can cause the power supply to become lodged in the slot, making it difficult to turn the screws).
7. Insert the appliance coupler end of the power cord into the appliance inlet on the power supply faceplate and insert the plug into an AC power source receptacle. Verify that the power cord does not block access to router components or drape where people could trip on it.
8. Press the power switch on the faceplate to the ON ( | ) position.Verify that the blue OUTPUT OK LED eventually lights steadily.

   After powering off a power supply, wait at least 60 seconds before turning it back on. After powering on a power supply, wait at least 60 seconds before turning it off. If the router is completely powered down when you power on the power supply, the Routing Engine boots as the power supply completes its startup sequence. If the Routing Engine finishes booting and you need to power down the router again, first issue the CLI request system halt command. For more information, see Disconnect AC Power from the Router or Disconnect DC Power from the Router. After a power supply is powered on, it can take up to 60 seconds for status indicators—such as LEDs on the power supply and show chassis commands—to indicate that the power supply is functioning normally. Ignore error indicators that appear during the first 60 seconds.

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