Ac Power Supply Leds In Ex4500 Switches; Figure 23: Ac Power Supply Leds In Ex4500 Switches; Table 16: Power Supply Led On Ex4500 Switches - Juniper EX4500 Hardware Manual

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AC Power Supply LEDs in EX4500 Switches

Table 16: Power Supply LED on EX4500 Switches

LED State
Unlit
Green
Copyright © 2017, Juniper Networks, Inc.
CAUTION: Verify that the direction of airflow through the power supply
matches the direction of airflow through the fan tray to prevent overheating
of the chassis.
Each AC power supply provides power to all components in the switch. The two power
supplies provide full power redundancy to the switch. If one power supply fails or is
removed, the second power supply balances the electrical load without interruption. The
switch reassesses the power required to support the switch configuration and issues
error messages if the available power is insufficient.
Installing an AC Power Supply in an EX4500 Switch on page 184
AC Power Supply Specifications for EX4500 Switches on page 79
AC Power Supply LEDs in EX4500 Switches on page 41
An AC power supply has one bicolor LED on its faceplate. This LED displays information
about the status of the power supply. See

Figure 23: AC Power Supply LEDs in EX4500 Switches

AC power
supply LEDs
Table 16 on page 41 describes the LED on an AC power supply in an EX4500 switch.
Description
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.
On steadily—Power supply is functioning normally.
Blinking—Power supply has failed.
Chapter 4: Power Supplies
Figure 23 on page 41.
41