Powering On A Dc-Powered Mx480 Router; Figure 66: Connecting Dc Power To The Router - Juniper MX480 Hardware Manual

Powering On a DC-Powered MX480 Router

Copyright © 2011, Juniper Networks, Inc.

Figure 66: Connecting DC Power to the Router

To power on a DC-powered router:
Verify that an external management device is connected to one of the Routing Engine
1.
ports ( AUX , CONSOLE , or
Turn on the power to the external management device.
2.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
3.
the strap to one of the ESD points on the chassis.
Verify that the power supplies are fully inserted in the chassis.
4.
Verify that the source power cables are connected to the appropriate terminal: the
5.
positive (+) source cable to the return terminal (labeled
(–) source cable to the input terminal (labeled
Switch on the dedicated customer site circuit breakers to provide power to the DC
6.
power cables.
Check the LED is lit steadily green to verify that power is present.
7. INPUT OK
If power is not present:
8.
Verify that the fuse is installed correctly and turn on the breaker at the battery
distribution fuse board or fuse bay.
Check the voltage with a meter at the terminals of the power supply for correct
voltage level and polarity.
On each of the DC power supplies, switch the DC circuit breaker to the center position
9.
before moving it to the on (
Chapter 10: Grounding and Providing Power to the MX480 Router
ETHERNET ).
–48V
) position.
—
) and the negative
RETURN
).
105