To install an AC power supply in the switch (see Figure 57 on page 204):
1. Ensure that you have the correct power supply. The label AFI or AFO on the power
supply must match the label AIR IN (AFI) or AIR OUT (AFO) on the installed fan module.
2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
point on the chassis.
3. If the power supply slot has a cover panel on it, with one hand slide the ejector lever
toward the left until it stops and using the other hand pull the handle of the cover
panel outward to remove it. Save the cover panel for later use.
4. Taking care not to touch power supply pins, leads, or solder connections, remove the
power supply from the bag.
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 and the ejector lever fits into place.
You will hear a distinct click when the power supply is fully seated in the chassis.
Figure 57: Installing an AC Power Supply in an EX4550 Switch
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 expansion module. It does not apply if you replace these components with
the same type of component.
Related
Documentation
Removing an AC Power Supply from an EX4550 Switch on page 204•
• AC Power Supply in EX4550 Switches on page 41
• Connecting AC Power to an EX4550 Switch on page 163
• AC Power Cord Specifications for an EX4550 Switch on page 86
• EX4550 Switches Hardware Overview on page 3
Removing an AC Power Supply from an EX4550 Switch
The power supplies in EX4550 switches are hot-removable and hot-insertable
field-replaceable units (FRUs) installed in the rear panel of the switch: You can remove
and replace them without powering off the switch or disrupting switch functions.
Copyright © 2015, Juniper Networks, Inc.204
EX4550 Switch Hardware Guide
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