Removing the Power Supplies

The router has two power supplies (either AC or DC) located at the bottom rear of the chassis, as shown in Figure 2. A power supply weighs approximately 12 lb (5.5 kg).

To remove the power supplies, follow this procedure (see Figure 28, which shows the power switch in the OFF [O] position on a DC power supply, and Figure 29, which shows removal 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. Loosen the thumbscrew at each end of the power supply faceplate, using a Phillips screwdriver if necessary. Unscrew both thumbscrews simultaneously and at about the same rate (unscrewing the two screws alternately or at very different rates can cause the power supply to become lodged in the slot, making it difficult to turn the screws).
4. Pull the ejector handle away from the faceplate.
5. Grasp the handle on the power supply faceplate and pull firmly to slide the unit about halfway out of the chassis.
6. Place one hand under the power supply to support it, then slide it completely out of the chassis.
7. Repeat the procedure to remove the second power supply.

Figure 28: Power Switch in the Off Position on a DC Power Supply

Figure 29: Removing a Power Supply