Dc Power Supply In Ex4300 Switches - Juniper EX4300 Hardware Manual

Table 35: AC Power Supply LEDs in EX4300 Switches (continued)
LED
OUT OK
Related
Documentation

DC Power Supply in EX4300 Switches

Copyright © 2015, Juniper Networks, Inc.
Color
Unlit
Green
Red
NOTE: If the IN OK
power cord is not installed properly or the power input voltage is not within
normal operating range.
If the LED is lit green and the
IN OK
supply is installed properly, but the power supply has an internal failure.
AC Power Supply in EX4300 Switches on page 47
AC Power Supply Specifications for EX4300 Switches on page 97
Connecting AC Power to an EX4300 Switch on page 173
The DC power supply in EX4300 switches is a hot-insertable and hot-removable
field-replaceable unit (FRU): You can install it without powering off the switch or
disrupting the switching function.
All the EX4300 switches that are powered by DC power supplies except EX4300-24T-S,
EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, and EX4300-48P-S switches are
shipped with one DC power supply pre-installed in the rear panel of the switches.
EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, and EX4300-48P-S
switches are not shipped with pre-installed power supplies; you must order them
separately.
This topic describes the DC power supplies.
CAUTION: Do not mix:
AC and DC power supplies in the same chassis
Power supplies with different airflow labels (
) in the same chassis.
(AFO)
Description
Indicates one of the following:
LED is unlit.
IN OK
The power supply is not delivering power correctly.
The power supply is delivering power and is functioning
correctly.
The power supply has failed and must be replaced.
LED and the OUT OK LED are not lit green, either the AC
LED is unlit or lit red, the AC power
OUT OK
Chapter 4: Power Supplies
AIR IN (AFI) and AIR OUT
55