Before you remove a power supply from a QFX5120, ensure that you have taken the necessary precautions
to prevent electrostatic discharge (ESD) damage (see “Prevention of Electrostatic Discharge Damage” on
page 191).
Ensure that you have the following parts and tools available to remove a power supply from a QFX5120:
•
ESD grounding strap
•
Antistatic bag or an antistatic mat
•
Phillips (+) screwdriver, number 2 (not provided)
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 QFX5120:
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 QFX5120, you need to power off the switch
before removing the power supply.
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.
•
DC power supply—Switch the circuit breaker on the panel board that services the DC circuit to the
off position.
4. Remove the power source cable from the power supply faceplate:
•
AC power supply—Remove the power cord from the power supply faceplate by detaching the power
cord retainer and gently pulling out the female end of the power cord connected to the power supply
faceplate.
•
DC power supply—Remove the screws securing the ring lugs attached to the power source cables
to the power supply using the screwdriver, and remove the power source cables from the power
supply. Replace the screws on the terminals and tighten them.
125
To Next Page
Loading...
Need help?
General