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Replacing an MX960 MIC

 

Removing an MX960 MIC

MICs are hot-insertable and hot-removable. When you remove a MIC, the router continues to function, although the MIC interfaces being removed no longer function.

The MICs are located in the MPCs installed in the front of the router. A MIC weighs less than 2 lb (0.9 kg).

To remove a MIC (see Figure 1 and Figure 2):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the MIC. If the MIC connects to fiber-optic cable, have ready a rubber safety cap for each transceiver and cable.
  2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  3. Use one of the following methods to take the MIC offline:
    • Press its online/offline button. Use a narrow-ended tool that fits inside the opening that leads to the button. Press the button until the MIC OK/FAIL LED goes off.

    • Issue the following CLI command:

      user@host> request chassis mic fpc-slot mpc-slot mic-slot mic-slot offline

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

  4. Label the cables connected to the MIC so that you can later reconnect each cable to the correct MIC.
  5. Disconnect the cables from the MIC. If the MIC uses fiber-optic cable, immediately cover each transceiver and the end of each cable with a rubber safety cap.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 you are inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

  6. Arrange the cable 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. 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.

  7. On the MPC, pull the ejector lever that is adjacent to the MIC you are removing away from the MPC faceplate. This disconnects the MIC from the MPC.Note

    To remove a dual-wide MIC that takes up both MIC slots, you must pull both ejector levers away from the MPC faceplate.

  8. Grasp the handles on the MIC faceplate, and slide the MIC out of the MPC card carrier. Place it in the electrostatic bag or on the antistatic mat.
  9. If you are not reinstalling a MIC into the emptied MIC slot within a short time, install a blank MIC panel over the slot to maintain proper airflow in the MPC card cage.
Figure 1: Removing a MIC
Removing a MIC
Figure 2: Removing a Dual-Wide MIC
Removing a Dual-Wide
MIC

Installing an MX960 MIC

To install a MIC (see Figure 4):

  1. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  2. If you have used a dual-wide MIC and are now replacing it with two “single” MICs, install the septum (see Figure 3):
    1. Place the MPC on a flat surface (if necessary, remove the MPC from the router as described in Removing an MX960 MPC).
    2. Position the septum in the center of the MPC so that it lines up with holes labeled S on the top of the MPC.
    3. Insert a screw into each of the two holes labeled S, and then tighten completely.
    4. On the bottom of the MPC, insert a screw into each of the four holes labeled S, and then tighten completely.
    5. Install the MPC as described in Installing an MX960 MPC.
    Figure 3: Installing the Septum
    Installing the Septum
  3. If the MIC uses fiber-optic cable, verify that a rubber safety cap is over each transceiver on the faceplate. Install a cap if necessary.
  4. On the MPC, pull the ejector lever that is adjacent to the MIC you are installing away from the MPC faceplate.
  5. Align the rear of the MIC with the guides located at the corners of the MIC slot.
  6. Slide the MIC into the MPC until it is firmly seated in the MPC.Caution

    Slide the MIC straight into the slot to avoid damaging the components on the MIC.

  7. Verify that the ejector lever is engaged by pushing it towards the MPC faceplate.
  8. If the MIC uses fiber-optic cable, remove the rubber safety cap from each transceiver and the end of each 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 cables connected to a transceiver emit laser light that can damage your eyes.

    Caution

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

  9. Insert the appropriate cables into the cable connectors on the MIC.
  10. Arrange each cable to prevent the cable 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. Caution

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

    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.

  11. Use one of the following methods to bring the MIC online:
    • Press its online/offline button. Use a narrow-ended tool that fits inside the opening that leads to the button. Press the button until the MIC OK/FAIL LED lights green.

    • Issue the following CLI command:

      user@host> request chassis mic fpc-slot mpc-slot mic-slot mic-slot online

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

    The normal functioning status LED confirms that the MIC is online. You can also verify correct MIC functioning by issuing the show chassis fpc pic-status command described in Maintaining MX960 MICs.

Figure 4: Installing a MIC
Installing a MIC

Installing an MX960 Dual-Wide MIC

To install a dual-wide MIC (see Figure 6):

  1. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  2. Remove the septum, if necessary (see Figure 5):
    1. Place the MPC on a flat surface (if necessary, remove the MPC from the router as described in Removing an MX960 MPC).
    2. Remove the four screws labeled S on the bottom of the MPC.
    3. Remove the two screws labeled S on the top of the MPC.
    4. Slide the septum towards you and out of the MPC.
    5. Store the septum and screws for later use.
    6. Install the MPC as described in Installing an MX960 MPC.
    Figure 5: Removing the Septum
    Removing the Septum
  3. If the MIC uses fiber-optic cable, verify that a rubber safety cap is over each transceiver on the faceplate. Install a cap if necessary.
  4. Pull the ejector lever above both MIC slots away from the router.
  5. Align the rear of the MIC with the guides located at the corners of the MIC slot.
  6. Slide the MIC into the MIC slot until it is firmly seated in the chassis.Caution

    Slide the MIC straight into the slot to avoid damaging the components on the MIC.

  7. Verify that the ejector levers are engaged by pushing them toward the router.
  8. If the MIC uses fiber-optic cable, remove the rubber safety cap from each transceiver and the end of each 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 cables connected to a transceiver emit laser light that can damage your eyes.

    Caution

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

  9. Insert the appropriate cables into the cable connectors on the MIC.
  10. Arrange each cable to prevent the cable 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. Caution

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

    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.

  11. Use one of the following methods to bring the MIC online:
    • Press its online/offline button. Use a narrow-ended tool that fits inside the opening that leads to the button. Press the button until the MIC OK/FAIL LED lights green.

    • Issue the following CLI command:

      user@host> request chassis mic fpc-slot mpc-slot mic-slot mic-slot online

    The normal functioning status LED confirms that the MIC is online. You can also verify correct MIC functioning by issuing the show chassis fpc pic-status command described in Maintaining MX960 MICs.

Figure 6: Installing a Dual-Wide MIC
Installing a
Dual-Wide MIC