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Table 12: Power Supply LED on EX4500 Switches
Description
LED State
Indicates one of the following:
•
Power supply is disconnected from AC power feed.
•
AC power input voltage is not within normal operating range.
•
No AC power input.
Unlit
•
On steadily—Power supply is functioning normally.
•
Blinking—Power supply has failed.
Green
•
On steadily—Power supply has failed.
•
Blinking—Power supply has failed.
Amber
Related
Documentation
AC Power Supply Specifications for EX4500 Switches on page 95
•
•
AC Power Cord Specifications for an EX4500 Switch on page 96
•
Connecting AC Power to an EX4500 Switch on page 143
DC Power Supply in EX4500 Switches
The DC power supply in EX4500 switches is a hot-insertable and hot-removable
field-replaceable unit (FRU).
EX4500 switches are shipped with one power supply. A cover panel is installed in the
second power supply slot. You can add a second power supply to the switch.
Power supplies are installed at the rear of the chassis in slots labeled 1 and 0. Both power
supplies are accessible from the rear of the chassis.
WARNING:
The switch is pluggable type A equipment installed in a
restricted-access location. It has a separate protective earthing terminal
provided on the chassis in addition to the grounding pin of the power supply
cord. This separate protective earthing terminal must be permanently
connected to earth ground. See
“Connecting Earth Ground to an EX Series
.
Each DC power supply weighs approximately 3 lb (1.3 kg) and has a pair of DC input lugs
(–48 VDC and RTN) on the front of the power supply. Each DC power supply also has a
fan, a bicolor LED on the faceplate that indicates the status of the power supply, and a
colored ejector lever. See
Copyright © 2015, Juniper Networks, Inc.
30
Complete Hardware Guide for EX4500 Ethernet Switches
Summary of Contents for EX4500-40F-BF
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