Figure 77: Connecting an AC Power Cord to an AC Power Supply in a
QFX3500 Device
AC
DC
!
g050009
Cord retainer
6. If the AC power source outlet has a power switch, set it to the OFF (O) position.
NOTE: The device powers on as soon as power is provided to the power
supply. There is no power switch on a QFX3500 device.
7. Insert the power cord plug into an AC power source outlet.
8. If the AC power source outlet has a power switch, set it to the ON (|) position.
9. Repeat these steps for the second AC power supply, if one is installed.
10. Verify that the AC and DC LEDs on each power supply are lit green.
If the amber fault LED is lit, remove power from the power supply, and replace the
power supply (see “Removing a Power Supply from a QFX3500 Device” on page 364).
Do not remove the power supply until you have a replacement power supply ready:
the power supplies or a blank cover panel must be installed in the device to ensure
proper airflow.
CAUTION: Replace a failed power supply with a blank panel or new power
supply within 1 minute of removal to prevent chassis overheating.
Related
Documentation
AC Power Supply for a QFX3500 Device on page 73•
• AC Power Supply LEDs on a QFX3500 Device on page 402
Connecting DC Power to a QFX3500 Device
The power supply in a QFX3500 device is a hot-removable and hot-insertable
field-replaceable unit (FRU). You can remove and replace it without powering off the
device or disrupting device functions.
WARNING: DC-powered QFX3500 devices are intended for installation only
in a restricted access location.
267Copyright © 2012, Juniper Networks, Inc.
Chapter 21: Installing a QFX3500 Node Device
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