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Maintaining the OCX1100 Power System

 

Removing an AC Power Supply from an OCX1100 Switch

The power supplies in OCX1100 switches are hot-removable and hot-insertable field-replaceable units (FRUs) installed in the rear panel of the switch: You can remove and replace them without powering off the switch or disrupting switch functions.

Before you remove a power supply from the switch, 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 the chassis:

  • ESD grounding strap

  • Phillips (+) screwdriver

  • Antistatic bag or an antistatic mat

  • Replacement power supply or a cover panel for the power supply slot

Caution

We recommend that you install either a replacement power supply or a cover panel in an empty power supply slot to prevent chassis overheating and dust accumulation.

To remove an AC power supply:

  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 OCX1100 switch, you need to power off the switch before removing the power supply.

  3. If the AC power source outlet has a power switch, set it to the off (O) position.
  4. Gently pull out the plug end of the power cord connected to the power source outlet.
  5. Remove the power cord from the power supply faceplate by gently pulling out the socket end of the power cord connected to the power supply faceplate.
  6. Press the clip to the left and 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.
  8. Place the power supply in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
  9. If you are not replacing the power supply, install the cover panel over the slot.

Figure 1 shows how to remove an AC power supply from an OCX1100 switch.

Figure 1: Removing an AC Power Supply from an OCX1100-48SX Switch
Removing
an AC Power Supply from an OCX1100-48SX Switch

Installing an AC Power Supply in an OCX1100 Switch

The AC power supply in OCX1100 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

Do not install:

  • AC and DC power supplies in the same chassis.

  • AC power supplies in DC switch models or DC power supplies in AC switch models.

  • Power supplies 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 an AC power supply in the switch:

Ensure that you have the following parts and tools available to install the power supply:

  • ESD grounding strap

  • Phillips (+) screwdriver

Note

Each power supply must be connected to a dedicated power source outlet.

To install an AC power supply in the switch:

  1. Ensure that you have the correct power supply. The label AIR IN (AFI) or AIR OUT (AFO) on the power supply must match the label AIR IN (AFI) or AIR OUT (AFO) on the installed fan module.
  2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  3. If the power supply slot has a cover panel on it, loosen the captive screws on the cover panel by using your fingers or a screwdriver. Hold the captive screw and gently pull it outward to remove the cover panel. Save the cover panel for later use.
  4. Taking care not to touch power supply pins, leads, or solder connections, remove the power supply from the bag.
  5. Using both hands, place the power supply in the power supply slot on the rear panel of the switch and slide it in until it is fully seated and the clip clicks into place. See Figure 2.
Figure 2: Installing an AC Power Supply in an OCX1100-48SX Switch
Installing
an AC Power Supply in an OCX1100-48SX Switch
Note

If you have a Juniper J-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 DC Power Supply from an OCX1100 Switch

The power supply in OCX1100 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.

Before you begin removing a power supply from the switch:

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

  • ESD grounding strap

  • Phillips (+) screwdriver

  • An antistatic bag or an antistatic mat

  • Replacement power supply or a cover panel for the power supply slot

Caution

We recommend that you install either a replacement power supply or a cover panel in an empty power supply slot to prevent chassis overheating and dust accumulation.

To remove a DC power supply:

  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.
  3. Make sure that the voltage across the DC power source cables leads is 0 V and that there is no chance that the cables might become active during the removal process.
  4. Gently pull out the plug end of the power cord connected to the power source outlet.
  5. Remove the power cord from the power supply faceplate by gently pulling out the socket end of the power cord connected to the power supply faceplate.
  6. Press the clip to the left and grasp the power supply handle and pull firmly to slide the power supply halfway out of the chassis.
  7. Taking care not to touch power supply pins, leads, or solder connections, place one hand under the power supply to support it. Grasp the power supply handle with your other hand and pull the power supply completely out of the chassis.
  8. Place the power supply in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
  9. If you are not replacing the power supply, install the cover panel over the slot.

Figure 3 shows how to remove a DC power supply from an OCX1100 switch.

Figure 3: Removing a DC Power Supply from an OCX1100-48SX Switch
Removing
a DC Power Supply from an OCX1100-48SX Switch

Installing a DC Power Supply in an OCX1100 Switch

The DC power supply in OCX1100 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

Do not install:

  • AC and DC power supplies in the same chassis.

  • AC power supplies in DC switch models or DC power supplies in AC switch models.

  • Power supplies 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 that you have the following parts and tools available to install a DC power supply in the switch chassis:

  • ESD grounding strap

  • Phillips (+) screwdriver

Note

Each power supply must be connected to a dedicated power source outlet.

To install a DC power supply in the switch:

  1. Ensure that you have the correct power supply. The label AIR IN (AFI) or AIR OUT (AFO) on the power supply must match the label AIR IN (AFI) or AIR OUT (AFO) on the installed fan module.
  2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  3. If the power supply slot has a cover panel on it, loosen the captive screws on the cover panel by using your fingers or the screwdriver. Hold the captive screw and gently pull it outward to remove the cover panel. Save the cover panel for later use.
  4. Taking care not to touch power supply pins, leads, or solder connections, remove the power supply from the bag.
  5. Using both hands, place the power supply in the power supply slot on the rear panel of the switch and slide it in until it is fully seated and the clip clicks into place. See Figure 4
Figure 4: Installing a DC Power Supply in an OCX1100-48SX Switch
Installing
a DC Power Supply in an OCX1100-48SX Switch
Note

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/csc/management/updateinstallbase.jsp . Failure to do so can result in significant delays if you need replacement parts. This note applies if you change the type of power supply or add a new type of uplink module. It does not apply if you replace these components with the same type of component.