Juniper QFX3500, Hardware Documentation

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Table 78: Fan Tray LED in a QFX5110 Switch
Description State Color Name
The fan module is operating normally. The system
has verified that the module is engaged, that the
airflow is in the correct direction, and that the
fan is operating correctly.
On steadily Green Fan
An error has been detected in the fan module.
Replace the fan module as soon as possible.
Either the fan has failed or it is seated incorrectly.
To maintain proper airflow through the chassis,
leave the fan module installed in the chassis until
you are ready to replace it.
Blinking Amber
Under normal operating conditions, the fan modules operate at a moderate speed. Temperature sensors
in the chassis monitor the temperature within the chassis.
The system raises an alarm if a fan module fails or if the ambient temperature inside the chassis rises above
the acceptable range. If the temperature inside the chassis rises above the threshold temperature, the
system shuts down automatically.
QFX5110 AC Power Supply LEDs
Figure 184 on page 501 shows the location of the LEDs on the power supply.
Figure 184: AC Power Supply LEDs on a QFX5110 Switch
g050008
AC OK
DC OK
Fault
Table 79 on page 502 describes the LEDs on the AC power supplies.
501