Installing An Mx2020 Dc Power Distribution Module; Figure 210: Removing A Dc Power Distribution Module From The Mx2020 - Juniper MX2020 Hardware Manual

Installing an MX2020 DC Power Distribution Module

Copyright © 2015, Juniper Networks, Inc.
CAUTION: Do not touch the power connectors on the back of the PDM. It
can get damaged.
Place the PDM onto an antistatic mat or into a ESD bag.
14.

Figure 210: Removing a DC Power Distribution Module from the MX2020

Router
NOTE: Each PDM slot not occupied by a DC PDM must be covered by a PDM
blank panel.
WARNING: Before performing DC power procedures, disconnect all power
sources. 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
position, and tape the switch handle of the circuit breaker in the
To install a DC PDM (see Figure 211 on page
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 electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Move the DC circuit breaker on the power input source to the
3.
Switch off ( ) the DC PSMs that are powered only from the DC PDMs being removed.
O
4.
Chapter 25: Replacing Components
460):
position.
OFF
OFF
position.
OFF
459