Installing A Dc Power Supply In An Ex4300 Switch - Juniper QFX5110 Series Hardware Documentation

RELATED DOCUMENTATION
Removing an AC Power Supply from an EX4300 Switch
Connecting AC Power to an EX4300 Switch
AC Power Supply in EX4300 Switches | 170
AC Power Cord Specifications for an EX4300 Switch | 180
EX4300 Switches Hardware Overview | 58

Installing a DC Power Supply in an EX4300 Switch

The DC power supply in EX4300 switches is a hot-removable and hot-insertable field-replaceable unit
(FRU) installed in the rear panel of the switch: You can remove and replace it without powering off the
switch or disrupting switch functions.
CAUTION:
AC and DC power supplies in the same chassis
Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the
same chassis.
Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the
same chassis.
Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR
OUT (AFO)) in the same chassis.
Before you install a DC power supply in the switch:
Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
Electrostatic Discharge Damage" on page
Ensure that you have the following parts and tools available to install a DC power supply in the switch
chassis:
ESD grounding strap
Phillips (+) screwdriver, number 2
Do not mix:
242.
"Prevention of
467