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Maintaining Power Supplies

 

Removing a Power Supply from an Optical ILA

The power supplies in an optical ILA are hot-removable and hot-insertable field-replaceable units (FRUs)—you can remove and replace them without powering off the optical ILA or disrupting optical ILA functions.

Caution

Replace the power supply within 1 minute of removal to prevent chassis overheating. Before removing the power supply, ensure that you have a replacement power supply available or install a blank cover.

Before you remove a power supply from an optical ILA, 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:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

To remove a power supply from an optical ILA (see Figure 1 and Figure 2):

  1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  2. To prevent damage to the equipment caused by static discharge, attach an ESD grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.Note

    If you will be removing all the power supplies installed in your optical ILA, you need to power off the optical ILA before removing the power supplies. See Powering Off an Optical ILA.

  3. Disconnect power to the optical ILA:

    • 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—Gently pull out the socket end of the power plug connected to the power supply faceplate.

    • DC power supply—Loosen the screws for the power connector and remove it.

  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.
  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.
    Figure 1: Removing an AC Power Supply from an Optical ILA
    Removing an AC Power
Supply from an Optical ILA
    Figure 2: Removing a DC Power Supply from an Optical ILA
    Removing a DC Power
Supply from an Optical ILA
  8. Place the power supply in the antistatic bag or on the antistatic mat placed on a flat, stable surface.

Installing a Power Supply in an Optical ILA

The power supplies in an optical ILA are hot-removable and hot-insertable field-replaceable units (FRUs)—you can remove and replace them without powering off the optical ILA or disrupting the ILA functions.

Caution

Replace the power supply within 1 minute of removal to prevent chassis overheating. Before removing the power supply, ensure that you have a replacement power supply available.

Before you install a power supply in an optical ILA, 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:

  • ESD grounding strap

To install a power supply in an optical ILA (see Figure 3 and Figure 4):

  1. To prevent damage to the equipment caused by static discharge, attach an ESD grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Taking care not to touch power supply components, pins, leads, or solder connections, remove the power supply from its bag.
  3. Using both hands, place the power supply in the power supply slot on the FRU panel of the optical ILA and slide it in until it is fully seated and the locking lever slides into place.
Figure 3: Installing an AC Power Supply in an Optical ILA
Installing an AC
Power Supply in an Optical ILA
Figure 4: Installing a DC Power Supply in an Optical ILA
 Installing a DC
Power Supply in an Optical ILA

See Connecting AC Power to an Optical ILA to connect the AC power supply. See Connecting DC Power to an Optical ILA to connect the DC power supply.

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.