Juniper QFX5200 Hardware Manual page 56

Table 20: AC Power Supply LEDs on QFX5200-32C and QFX5200-32C-L
LED Color State
DC OK Unlit Off
Green On steadily
Fault Amber On steadily
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.
Table 21: AC Power Supply LED on a QFX5200-48Y
Color State
Unlit Off
Green Blinking
On steadily
Alternating red/ Blinking
green
Red On steadily
Description
The power supply is disconnected from power, or the power supply is not
sending out power correctly.
The power supply is sending out power correctly.
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.
Description
The power supply is disconnected from power, or power is not coming into
the power supply.
The PSU is in standby mode. Power is coming into the power supply at +5V..
The power supply is sending out power correctly.
Power supply warning. Check the logs for related messages.
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.
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