Figure 17: AC Power Supply LEDs on a QFX5110 Switch
Table 16 on page 49 describes the LEDs on the AC power supplies.
Table 16: AC Power Supply LEDs on a QFX5110 Switch
DescriptionStateColorLED
The power supply is disconnected from power, or power is not coming
into the power supply.
OffUnlitAC OK
Power is coming into the power supply.On steadilyGreen
The power supply is disconnected from power, or the power supply is
not sending out power correctly.
OffUnlitDC OK
The power supply is sending out power correctly.On steadilyGreen
An error has been detected in the power supply. Replace the power
supply as soon as possible. To maintain proper airflow through the
chassis, leave the power supply installed in the chassis until you are
ready to replace it.
On steadilyAmberFault
NOTE: If the AC OK LED and the DC OK LED are unlit, either the AC power
cord is not installed properly or the power supply fuse has failed. If the AC
OK LED is lit and the DC OK LED is unlit, the AC power supply is installed
properly, but the power supply has an internal failure.
QFX5110 DC Power Supply Description
Except for the QFX5110-32Q-CHAS, the QFX5110 switches are shipped from the factory
with two power supplies (see Figure 18 on page50). Each power supply is a hot-removable
and hot-insertable field-replaceable unit (FRU) when the second power supply is installed
and running. You can install replacement power supplies in the two slots next to the fan
modules without powering off the switch or disrupting the switching function.
The DC power supply in QFX5110 is 650 W with dual feeds for power resiliency.
49Copyright © 2019, Juniper Networks, Inc.
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