Powering On A Dc-Powered Mx240 Router - Juniper mx240 Hardware Manual

MX240 3D Universal Edge Router Hardware Guide

Powering On a DC-Powered MX240 Router

200
To power on a DC-powered router:
Verify that an external management device is connected to one of the Routing Engine
1.
ports ( , , or
AUX CONSOLE
Turn on the power to the external management device.
2.
Verify that the power supplies are fully inserted in the chassis.
3.
Verify that the source power cables are connected to the appropriate terminal: the
4.
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
5.
power cables.
Check that the
INPUT OK
6.
If power is not present:
7.
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.
Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
8.
ESD points on the chassis.
On each of the DC power supplies, switch the DC circuit breaker to the center position
10.
before moving it to the on (
NOTE: The circuit breaker may bounce back to the off (
move the breaker too quickly.
Observe the status LEDs on each power supply faceplate. If a DC power supply is
correctly installed and functioning normally, the
LEDs light green steadily.
If any of the status LEDs indicates that the power supply is not functioning normally,
repeat the installation and cabling procedures .
).
ETHERNET
–48V ).
LED is lit steadily green to verify that power is present.
) position.
—
PWR OK
Copyright © 2016, Juniper Networks, Inc.
) and the negative (–)
RTN
O ) position if you
, , and
BRKR ON INPUT OK