Juniper NSM4000, Hardware Manual

Page: 132 / 196

This topic contains the following sections:
•
Removing the DC Power Supply Module on page 118
•
Installing a DC Power Supply Module on page 119
Removing the DC Power Supply Module
To remove the DC power supply module from an NSM4000 appliance:
1.
Switch off the dedicated facility circuit breaker for the power supply module being
removed.
2.
(Optional) Attach an electrostatic discharge (ESD) grounding strap to your bare wrist,
and connect the strap to an external ESD point.
3.
Make sure that the voltage across the DC power source cable leads is 0 V and that
there is no chance that the cables might become active during the removal process.
4.
Remove the clear plastic cover protecting the terminal studs on the faceplate.
5.
Remove the screws from the terminals, using a Phillips screwdriver, number 2, to
loosen and remove the screws. Save the screws.
6.
Remove the cable lugs from the terminals.
7.
Remove the screw on the grounding terminal by using the screwdriver. Save the screw.
8.
Remove the grounding lug from the grounding terminal.
9.
Carefully move the power cables out of the way.
10.
Slide the ejector lever to the right, as shown in Figure 60 on page 118 , until it is in its
furthest position.
Figure 60: Removing a DC Power Supply Module
1— Power supply ejector lever
11.
Grasp the handle of the power supply module and pull firmly to slide the power supply
module halfway out of the chassis.
12.
Place one hand under the power supply module to support it and slide it completely
out of the appliance. Take care not to touch power supply components, pins, leads,
or solder connections.
13.
Place the power supply module in the antistatic bag or on the antistatic mat placed
on a flat, stable surface.
Copyright © 2016, Juniper Networks, Inc. 118
NSM4000 Appliance Hardware Guide