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Replacing an MX2000 MPC

 
Note

The MX2K-MPC11E is supported only on MX2020 and MX2010 routers.

Removing an MPC

Before you remove an MPC from the router chassis, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

When you remove an MPC, the router continues to function but the MPC interfaces no longer function.

MPCs are installed vertically in the MX2020 and MX2010 routers. MPCs are hot-insertable and hot-removable. An MPC can weigh up to 19.75 lb (9.0 kg). Be prepared to accept the full weight of the MPC as you slide it out of the card cage.

Ensure that you have the following parts and tools available to remove an MPC:

  • ESD grounding strap

  • Electrostatic bag or an antistatic mat

  • A replacement MPC slot cover

    Note

    Placing a line card in an electrostatic bag might require a second person to assist with sliding the line card into the bag.

To remove an MPC:

  1. Attach an ESD grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Label the cables connected to each port on the MPC so that you can reconnect the cables to the correct ports later.
  3. Issue the following CLI command to take the MPC offline:
    user@host>request chassis fpc slot slot-number offline

    For more information about the CLI command, see the CLI Explorer.

    Warning

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to a transceiver emit laser light that can damage your eyes.

    Caution

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing a cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

    Caution

    Avoid bending a fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  4. Disconnect the cables from the ports that are installed in the MPC.
  5. Arrange the disconnected cables in the cable manager to prevent the cables from developing stress points.
  6. Simultaneously turn both the ejector handles of the MPC counterclockwise to unseat the MPC.
  7. Grasp the handles, and holding the MPC straight, slide it halfway out of the card cage.Caution

    The MPC and the handles may be hot. Allow a few minutes for the MPC and handles to cool by pulling out the MPC halfway out of the card cage. Wear proper protective, heat-resistant gloves while removing an MPC.

  8. Grasp both sides of the MPC at the midpoint, and remove the MPC from the card cage. See Figure 1 and Figure 2.
    Figure 1: Removing an MPC (MX2020)
    Removing an MPC (MX2020)
    Figure 2: Removing an MPC (MX2010)
    Removing an MPC (MX2010)
  9. Slide the MPC completely out of the card cage and place it on the antistatic mat or in the electrostatic bag.Caution

    The weight of the MPC is concentrated in the back end. Be prepared to accept the full weight of the MPC—up to 19.75 lb (9.0 kg)—as you slide the MPC out of the card cage.

    When the MPC is out of the card cage, do not hold it by the ejector handles, bus bars, or edge connectors. They cannot support the weight of the MPC.

    Do not stack MPCs on top of one another after removal. Place each MPC individually in an electrostatic bag or on its own antistatic mat on a flat, stable surface.

  10. If you are not installing another MPC into the empty card slot within a short time, install an MPC slot cover to maintain proper airflow in the card cage.Caution

    After removing an MPC from the card cage, wait at least 30 seconds before replacing it with another MPC, or inserting an MPC into a different slot.

Installing an MPC

An MPC weighs up to 19.75 lb (9.0 kg). Be prepared to accept its full weight.

To install an MPC:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Remove the MPC from its electrostatic bag.
  3. Identify the slot on the router where it will be installed.
  4. Verify that each fiber-optic MPC has a rubber safety cap covering the transceiver. If it does not, cover the transceiver with a safety cap.
  5. Ensure that the top of the MPC is facing upward. The text on the faceplate will be facing left.
  6. Lift the MPC into place, and carefully align first the bottom, then the top of the MPC inside the slot.
  7. Slide the MPC all the way into the slot until you feel resistance. See Figure 3 and Figure 4.
    Figure 3: Installing an MPC (MX2020)
    Installing an MPC (MX2020)
    Figure 4: Installing an MPC (MX2010)
    Installing an MPC (MX2010)
  8. Grasp both knobs, and rotate them clockwise simultaneously until the MPC is fully seated into the card cage.
  9. Remove the rubber safety cap from each fiber-optic transceiver and cable.Warning

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

  10. Insert the cables into the cable connector ports on each MPC (see Figure 5).
    Figure 5: Attaching a Cable to an MPC
    Attaching a Cable
to an MPC
  11. Arrange the cable in the cable manager to prevent it from dislodging or developing stress points. Secure the cable so that it is not supporting its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop. Placing fasteners on the loop helps to maintain its shape.Caution

    Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.

    Caution

    Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  12. Issue the following CLI command to bring the MPC online:
    user@host>request chassis fpc slot slot-number online

    For more information about the command, see the Junos OS System Basics and Services Command Reference  .

    Caution

    After the OK LED turns green, wait at least 30 seconds before removing the MPC again, removing an MPC from a different slot, or inserting a MPC in a different slot.

    Note

    When issuing the request chassis fpc online command, the MPC will get power, and the system total power will decrease.

You can also verify that the MPC is functioning correctly by issuing the show chassis fpc and show chassis fpc pic-status commands.