Attaching the T640 Router Installation Handle

To assist you with the installation of the T640 router, attach the installation handle over the power supply slots of the chassis. To remove the power supplies and attach the handle, starting with the upper power supply:

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
2. Switch the circuit breakers on the power supply faceplate to the off position (O). We recommend this even though the power supplies are not connected to power sources.
3. Loosen the captive screws on the lower corners of the power supply faceplate completely. Twist the ejector handles on the upper corners of the faceplate counterclockwise to unseat the power supply.
4. Twist the ejector handles on the upper corners of the faceplate counterclockwise to unseat the power supply.
5. Grasp the handle on the power supply faceplate and pull firmly to start removing the power supply. Slide it halfway out of the chassis (see Figure 1).

   Caution: Be prepared to support the full weight of the power supply as you remove it from the router.

6. Place one hand underneath the power supply to support it and slide it completely out of the chassis.
7. Repeat the procedure for the other power supply.
8. Attach the installation handle by tightening the captive screws of the handle into the holes previously occupied by the captive screws of the power supplies (see Figure 2).

Figure 1: Removing a Power Supply Before Installing the Installation Handle

Figure 2: Attaching the Installation Handle