Juniper QFabric QFX3000-G Hardware Documentation page 747

Installing a Power Supply in an EX4200 Switch
Copyright © 2018, Juniper Networks, Inc.
The power supply in EX4200 switches is a hot-removable and hot-insertable
field-replaceable unit (FRU): You can remove and replace it without powering off the
switch or disrupting switch functions.
All the EX4200 AC powered or DC powered switches, except the EX4200-24F-S and
EX4200-48T-S switches are shipped with one AC or DC power supply pre-installed in
the rear panel of the switches. EX4200-24F-S and EX4200-48T-S switches are not
shipped with pre-installed power supplies; you must order them separately.
Ensure that you have the following parts and tools available:
A Phillips (+) screwdriver, number 2
To install a power supply in the switch (see
Taking care not to touch power supply components, pins, leads, or solder connections,
1.
remove the power supply from its bag.
Loosen the locking lever screw on the left front of the power supply by using the
2.
screwdriver.
Push down on the locking lever until it is in its lowest position.
3.
Using both hands, place the power supply in the power supply slot on the rear panel
4.
of the switch and slide it in until it is fully seated.
NOTE: The handle on the 320 W AC power supply is at the bottom of the
power supply faceplate, while the handle on the 600 W and the 930 W
AC power supplies is at the top of the faceplate. The handle on the 190 W
DC power supply runs across the faceplate.
Push the locking lever up to its highest position (this action might pull the power supply
5.
in).
Tighten the locking lever screw by using the screwdriver.
6.
Chapter 46: Replacing EX4200 Components
Figure 302 on page 698):
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