Figure 174: Disconnecting Power Cables From A Two-Input 160-A Dc Power; Supply - Juniper T640 Hardware Manual

Copyright © 2013, Juniper Networks, Inc.

Figure 174: Disconnecting Power Cables from a Two-Input 160-A DC Power

Supply

CAUTION: You must ensure that power connections maintain the proper
polarity. The power source cables might be labeled
their polarity. There is no standard color coding for DC power cables. The
color coding used by the external DC power source at your site determines
the color coding for the leads on the power cables that attach to the
terminal studs on each power supply.
Remove the cable lugs from the terminal studs.
7.
Loosen the captive screws on the cable restraints on the right edge of the power
8.
supply faceplate.
Carefully move the power cables out of the way.
9.
Loosen the captive screws on the lower corners of the power supply faceplate
10.
completely. Twist the ejector handles on the upper corners of the faceplate
counterclockwise to unseat the power supply.
Twist the ejector handles on the upper corners of the faceplate counterclockwise to
11.
unseat the power supply.
Grasp the handle on the power supply faceplate, and pull firmly to start removing the
12.
power supply. Slide it halfway out of the chassis (see
Chapter 17: Replacing T640 Router Hardware Components
Figure 175 on page
(+) and (–) to indicate
310).
309