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.
NOTE: Figure 69 on page 182 shows the two-input 160-A DC power supply,
but the procedure also applies to the three-input 240-A DC power supply,
four-input 240-A DC power supply, or six-input DC power supply.
Figure 69: Removing a Power Supply Before Installing the Router
Removing the T640 SIBs
Five standard SIBs, SIB version B, or T640-SIBs are installed in the router. The SIBs are
located in the rear of the chassis in the slots marked SIB0 through SIB4. Each SIB weighs
approximately 6.8 lb (3.1 kg).
To remove a SIB (see Figure 70 on page 183):
1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
2. 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.
3. Loosen the captive screws (using a Phillips (+) screwdriver, number 2) on the ejector
handles on each side of the SIB faceplate.
4. Flip the ejector handles outward to unseat the SIB.
5. Grasp both ejector handles, pull firmly, and slide the SIB about three-quarters of the
way out of the chassis.
Copyright © 2017, Juniper Networks, Inc.182
T640 Core Router Hardware Guide
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