Figure 83: Reinstalling an SCG
Reinstalling the T640 Control Boards
To reinstall the control boards (see Figure 84 on page 198 and Figure 85 on page 199):
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. Carefully align the sides of the control board with the guides inside the chassis.
3. Slide the control board into the chassis, carefully ensuring that it is correctly aligned.
4. Grasp both ejector handles and press them inward to seat the control board.
5. Tighten the captive screws on the ejector handles, using a Phillips (+) screwdriver,
number 2.
6. Repeat the procedure to reinstall the remaining control board.
Figure 84: Reinstalling a T-CB
Copyright © 2017, Juniper Networks, Inc.198
T640 Core Router Hardware Guide
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