Juniper QFX3500, Hardware Documentation

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NOTE: Each power supply must be connected to a dedicated power source outlet.
NOTE: If you have a Juniper Care service contract, register any addition, change, or upgrade of
hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ .
Failure to do so can result in significant delays if you need replacement parts. This note does
not apply if you replace existing components with the same type of component.
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 242 ).
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 supply with a new power supply within 1 minute of
removal to prevent chassis overheating.
To remove a power supply from a QFX5110 (see Figure 140 on page 428 ):
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.
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