Installing a Power Supply in an EX4200 Switch

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.

Ensure that you have the following parts and tools available:

• A Phillips (+) screwdriver, number 2

To install a power supply in the switch (see Figure 1):

1. Taking care not to touch power supply components, pins, leads, or solder connections, remove the power supply from its bag.
2. Loosen the locking lever screw on the left front of the power supply by using the screwdriver.
3. Push down on the locking lever until it is in its lowest position.
4. 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.

5. Push the locking lever up to its highest position (this action might pull the power supply in).
6. Tighten the locking lever screw by using the screwdriver.

Figure 1: Installing a Power Supply in an EX4200 Switch

Note: Each power supply must be connected to a dedicated power source outlet.

Note: EX4200-24PX and EX4200-48PX switches do not support the 930 W (EX-PWR-930-AC) or the 600 W (EX-PWR-600-AC) AC power supplies that are used in the EX4200-48P and the EX4200-24P switch models. EX4200-24PX and EX4200-48PX switches work only with the power supply labeled EX-PWR2-930-AC. You can find the label on the top of the power supply (see Removing a Power Supply from an EX4200 Switch). The EX-PWR2-930-AC power supply is supported across the EX4200 product line.

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.