Maintaining QFX5110 Power Supplies
•
Removing a Power Supply from a QFX5110 on page 110
•
Installing a Power Supply in a QFX5110 on page 111
Removing a Power Supply from a QFX5110
All QFX5110 switches, except the QFX5110-32Q-CHAS are shipped from the factory with
two power supplies. 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.
Before you remove a power supply from a QFX5110, ensure that you have taken the
necessary precautions to prevent electrostatic discharge (ESD) damage (see “Prevention
of Electrostatic Discharge Damage” on page 158).
Ensure that you have the following parts and tools available to remove a power supply
from a QFX5110:
•
ESD grounding strap
•
Antistatic bag or an antistatic mat
•
Phillips (+) screwdriver, number 2 (DC power supply)
CAUTION: Replace the power supplywith a new power supply within 1 minute
of removal to prevent chassis overheating.
To remove a power supply from a QFX5110 (see Figure 37 on page 111):
1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
point on the chassis.
NOTE: If only one power supply is installed in your QFX5110, you need to
power off the switch before removing the power supply. See “Powering
Off a QFX5110” on page 120.
3. Disconnect power to the switch:
•
AC power supply—If the AC power source outlet has a power switch, set it to the
off (O) position. If the AC power source outlet does not have a power switch, gently
pull out the male end of the power cord connected to the power source outlet.
Copyright © 2019, Juniper Networks, Inc.110
QFX5110 Switch Hardware Guide
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