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Maintaining QFX10002 Power Supplies

Use the following procedures to replace a power supply in a QFX10002:

Removing a Power Supply from a QFX10002

Before you remove a power supply from a QFX10002, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

Ensure that you have the following parts and tools available to remove a power supply from a QFX10002:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • Phillips (+) screwdriver, number 2 (DC power supply)

If you are removing a redundant power supply and do not plan to replace it with another immediately, have a power supply cover for the opening.

The power supplies in a QFX10002 are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the switch or disrupting switch functions after the power cord is disconnected.

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 QFX10002 (see Figure 1):

  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 QFX10002 device, you need to power off the switch before removing the power supply. See Powering Off a QFX10002.

  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 plug 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 socket end of the power plug connected to the power supply faceplate.

    • DC power supply—Loosen the thumb screws for the power cord. Gently pull out the socket end of the power plug connected to the power supply faceplate.

  5. Slide the locking lever toward the handle until it stops.
  6. Grasp the power supply handle and pull firmly to slide the power supply halfway out of the chassis.
    Figure 1: Removing a Power Supply from a QFX10002-72Q Removing a Power Supply from a QFX10002-72Q
  7. Place one hand under the power supply to support it and slide it completely out of the chassis. Take care not to touch power supply components, pins, leads, or solder connections.
  8. Place the power supply in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
  9. Either replace with another power supply or insert a PSU blank cover (QFX10002-PWR-BLNK).
    Figure 2: Inserting a Power Supply Blank CoverInserting a Power Supply Blank Cover

Installing a Power Supply in a QFX10002

  • Before you install a power supply in a QFX10002, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • Ensure that the airflow direction of the power supply is the same as the chassis. Labels on the power supply handle indicate the direction of airflow. See QFX10002 Cooling System.

The power supplies in a QFX10002 are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the switch or disrupting switch functions.

To install a power supply in a QFX10002 (see Figure 4):

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. If the power supply is being installed in an empty slot, remove the blank cover by squeezing the finger holds and pulling the cover straight out.
    Figure 3: Removing a Power Supply Blank CoverRemoving a Power Supply Blank Cover
  3. Taking care not to touch power supply components, pins, leads, or solder connections, remove the power supply from its bag.
  4. If the power supply has protective plastic wrap, peel and remove the plastic wrap from all four sides of the power supply.
  5. Using both hands, place the power supply in the power supply slot on the FRU panel of the switch and slide it in until it is fully seated and the locking lever slides into place.
Figure 4: Installing a Power Supply in a QFX10002-72Q Installing a Power Supply in a QFX10002-72Q
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.

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