CAUTION: Do not stack hardware components on one another after you
remove them. Place each component on an antistatic mat resting on a
stable, flat surface.
7. Repeat the procedure for the second control board.
Figure 71: Removing a T-CB
Figure 72: Removing an LCC-CB
Removing the T640 SCGs
The router can have one or two SCGs installed. The SCGs are located in the upper rear
of the chassis, above the control boards and Routing Engines. Each SCG weighs
approximately 1.9 lb (0.9 kg).
To remove the SCGs (see Figure 73 on page 185):
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.
Copyright © 2017, Juniper Networks, Inc.184
T640 Core Router Hardware Guide
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