Reinstalling the Power Supplies

The two power supplies (AC or DC) are located at the bottom rear of the chassis, as shown in Figure 2. To reinstall the power supplies, follow this procedure (see Figure 41, which shows the power switch in the OFF [O] position on a DC power supply, and Figure 42, which shows installation of an AC power supply):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Verify that the router is attached to a proper earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
2. Verify that the power switch for each power supply is in the OFF (O) position. On a DC power supply, the switch is located above the terminal studs on the power supply faceplate. On an AC power supply, the switch is just below the appliance inlet on the power supply faceplate.
3. Grasp the handle on the power supply faceplate with one hand and place the other hand under the supply to support it.
4. Slide the power supply into the chassis until it contacts the midplane.
5. Press the ejector handle toward the faceplate to seat the power supply firmly in the chassis.
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. Repeat the procedure to reinstall the second power supply.
8. To continue the installation, proceed to Connecting the Router .

Figure 41: Power Switch in the Off Position on a DC Power Supply

Figure 42: Reinstalling a Power Supply