• Downloads
• Installing an M120 FPC    

• Related Topics
• M120 Flexible PIC Concentrators (FPCs) Overview
• Troubleshooting M120 FPCs and CFPCs

Installing an M120 FPC

To install an FPC (see Figure 1 and Figure 2):

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. Place the FPC on an antistatic mat.
3. Take each PIC to be installed in the replacement FPC out of its electrostatic bag and identify the slot on the FPC where it will be connected.
4. Verify that each fiber-optic PIC has a rubber safety cap covering the PIC transceiver. If it does not, cover the transceiver with a safety cap.
5. Install each PIC into the appropriate slot on the FPC. For information on installing a PIC, see Installing an M120 PIC.
6. Locate the slot in the FPC card cage in which you plan to install the FPC.
7. Ensure that the FPC is right-side up, with the text on the faceplate of the FPC facing upward.
8. Lift the FPC into place and carefully align first the bottom, then the top of the FPC with the guides inside the card cage.

   Caution: When the FPC is out of the chassis, do not hold it by the ejector handles, bus bars, or edge connectors. They cannot support its weight.

9. Slide the FPC all the way into the card cage until you feel resistance.
10. Grasp both ejector handles and rotate them simultaneously clockwise until the FPC is fully seated.
11. If any of the PICs on the FPC connect to fiber-optic cable, remove the rubber safety cap from each 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.

12. Insert the appropriate cable into the cable connector ports on each PIC on the FPC. Secure the cables so that they are not supporting their own weight. Place excess cable out of the way in a neatly coiled loop, using the cable management system. Placing fasteners on a 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.

13. Use one of the following methods to bring the FPC online:
    • Press and hold the FPC online/offline button until the green STATUS LED next to the button lights steadily, in about 5 seconds. The LEDs and online/offline button for each FPC are located directly above it on the craft interface.
    • Issue the CLI command:
      
      

      user@host>request chassis fpc slot slot-number online

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

    Caution: After the OK LED lights steadily, wait at least 30 seconds before removing the FPC again, removing an FPC from a different slot, or inserting an FPC in a different slot.

You can also verify correct FPC and PIC functioning by issuing the show chassis fpc and show chassis fpc pic-status commands described in Maintaining M120 FPCs and CFPCs and Maintaining M120 PICs and PIC Cables.