Disconnecting The Dc Power Cables - Juniper MX204 Hardware Manual

Installing an MX204 DC Power Supply
Copyright © 2018, Juniper Networks, Inc.
Figure 48: Disconnecting the DC Power Cables
Figure 49: Removing a DC Power Supply
WARNING: Before performing DC power procedures, ensure that power is
removed from the DC circuit. To ensure that all power is off, locate the circuit
breaker on the panel board that services the DC circuit, switch the circuit
breaker to the off position, and tape the switch handle of the circuit breaker
in the off position.
To install a DC power supply (see
Ensure that the voltage across the DC power source cable leads is 0 V and that there
1.
is no chance that the cable leads might become active during installation.
Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
2.
ESD points on the chassis.
Using both hands, slide the DC power supply straight into the chassis until the power
3.
supply is fully seated in the chassis slot. The power supply faceplate must alligned
with any adjacent power supply faceplate or blank installed in the power supply slot.
Remove the clear plastic cover protecting the terminal on the faceplate.
4.
Remove the screws from the terminals.
5.
Chapter 17: Replacing Power System Components
Figure 50 on page 103):
101