Juniper EX Series Instruction Manual

Installing a Power Supply in an EX-series Switch
The power supply in EX 3200 and EX 4200 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.
Ensure you have the following parts and tools available to install a power supply in
an EX 3200 or EX 4200 switch chassis:
■Electrostatic discharge (ESD) grounding strap
■Phillips (+) screwdriver, number 2
Before you begin installing a power supply in an EX 3200 or EX 4200 switch, ensure
that you have taken the necessary precautions to prevent ESD damage (see Preventing
Electrostatic Discharge Damage).
To install a power supply in an EX 3200 or EX 4200 switch (see Figure 1 on page 2):
1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and
connect the strap to the ESD point on the chassis.
2. Taking care not to touch power supply components, pins, leads, or solder
connections, remove the power supply from its bag.
3. Loosen the locking lever screw on the left front of the power supply by using the
Phillips (+) screwdriver, number 2.
4. Push down on the locking lever until it is in its lowest position.
5. Using both hands, place the power supply in the power supply slot on the rear
panel 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.
6. Push the locking lever up to its highest position (this action might pull the power
supply in).
7. Tighten the locking lever screw by using the Phillips (+) screwdriver, number 2.
Installing a Power Supply in an EX-series Switch ■1

Figure 1: Installing a Power Supply in an EX 3200 or EX 4200 Switch
NOTE: Each power supply must be connected to a dedicated power source outlet.
NOTE: If you have a Juniper J-Care service contract, register any addition, change,
or upgrade of hardware components at
https://www.juniper.net/customers/csc/management/updateinstallbase.jsp. Failure to do so
can result in significant delays if you need replacement parts. This note applies if
you change the type of power supply or add a new type of uplink module. It does
not apply if you replace these components with the same type of component.
Related Topics ■Removing a Power Supply from an EX-series Switch
■Installing and Removing EX-series Switch Hardware Components
■Power Supply in EX-series Switches
■Field-Replaceable Units in EX-series Switches
■AC Power, Connection, and Power Cord Specifications
■EX 3200 Switch—Rear-Panel Description
■EX 4200 Switch—Rear-Panel Description
2■Installing a Power Supply in an EX-series Switch