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Figure 29: DC Power Supply Faceplate on an EX4550 Switch
g050211
1
6
7
8
5
2
3
4
5—
1—
ESD grounding point
V+ input terminals
6—
2—
! (Fault) LED
V– input terminals
7—
3—
OUT (Output) LED
Terminal block
8—
4—
IN (Input) LED
Ejector lever
Table 23 on page 47
describes the LEDs on the DC power supplies.
Table 23: DC Power Supply LEDs on an EX4550 Switch
Description
State
Color
Name
Indicates one of the following:
•
Power supply is disconnected from DC power feed.
•
DC power input voltage is not within normal operating range.
•
No DC power input.
Off
Unlit
IN
The power supply is receiving power.
On steadily
Green
Indicates one of the following:
•
The power supply is disconnected from the power feed.
•
The power supply is not delivering power correctly.
Off
Unlit
OUT
The power supply is functioning correctly.
On steadily
Green
The power supply has failed and must be replaced.
On steadily
Yellow
!
(Fault)
Related
Documentation
•
DC Power Supply in EX4550 Switches on page 44
•
DC Power Supply Specifications for EX4550 Switches on page 88
47
Copyright © 2015, Juniper Networks, Inc.
Chapter 4: Power Supplies
Summary of Contents for EX4550
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