Replacing An M7I Dc Power Cable; Removing An M7I Dc Power Cable; Figure 54: Connecting Dc Power Cables - Juniper M7I Hardware Manual

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Replacing an M7i DC Power Cable

Copyright © 2010, Juniper Networks, Inc.

Figure 54: Connecting DC Power Cables

M7i Router DC Power Supply Specifications on page 170
M7i DC Power Electrical Safety Guidelines on page 149
DC Power Electrical Safety Warnings for M Series, MX Series, and T Series Routers on
page 150
On a DC-powered router, the power cables from the external DC power sources connect
to field-wiring terminals on each power supply.
Removing an M7I DC Power Cable on page 115
Installing an M7i DC Power Cable on page 116

Removing an M7I DC Power Cable

Before removing a DC power cable from an M7i router with only one power supply, you
must power off the router. To remove a DC power cable from the router:
Shut off the power flowing from the external power sources, so that the voltage across
1.
the leads of the power cables is 0 V. Ensure that there is no chance that the cable
leads might become active during the procedure.
Press the power switch on the power supply faceplate to the
2.
NOTE: If you are power cycling the power supply rather than shutting it
off for a time, wait at least 60 seconds after turning it off before turning
it back on. If you need to power it off again, wait for at least 60 seconds
after powering it on.
Chapter 15: Replacing M7i Hardware Components
( ) position.
OFF O
115