Removing an FPC

Each M320, T320, T640, or T1600 routing platform holds up to eight FPCs, which you install vertically into the front of the routing platform.

To remove an FPC, follow this procedure:

1. Have ready a replacement FPC or FPC blank panel and an antistatic mat for the FPC. Also have ready rubber safety caps for each PIC that uses an optical interface on the FPC that you are removing.
2. Attach an ESD wrist strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
3. Label the cables connected to each PIC on the FPC, so that you can reconnect each cable to the correct PIC later.
4. Use one of the following methods to take the FPC offline:
   • Press and hold the FPC offline button, which is directly above the FPC. The green OK LED next to the button begins to blink. Hold the button down until the LED goes out (about 5 seconds).
   • Issue the following CLI command:

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

5. Remove the cable connectors plugged into each PIC on the FPC. If a PIC uses fiber-optic cable, immediately cover each transceiver and the end of each cable with a rubber safety cap. Carefully arrange the disconnected cables in the cable management system to prevent the cables from developing stress points.

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

   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.

6. Carefully drape each disconnected cable over the bobbins on the cable management system below the FPC card cage to prevent the cables from developing stress points.

   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.

7. Simultaneously turn both ejector handles counterclockwise to unseat the FPC.

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

8. Grasp the handles, and slide the FPC straight out of the card cage halfway. Figure 30 shows how to pull an FPC out of a T320 router. The procedure is the same for the M320, T640, or T1600 routing platforms.

   Figure 30: Removing an FPC from a T320 Router

   

   Caution: The weight of the FPC is concentrated in the back end. Before you remove an FPC, be prepared to support its weight as you slide the FPC out of the chassis. An empty M320 FPC1 or FPC2 weighs 15 lb (6.8 kg), and an empty M320 FPC3 weighs 16 lb (7.3 kg). A fully configured M320 FPC can weigh up to 29 lb (13.2 kg). An empty T320 FPC1 or FPC2 weighs 14.3 lb (6.5 kg), and an empty T320 FPC3 weighs 14.8 lb (6.7 kg). A fully configured T320 FPC can weigh up to 19 lb (8.6 kg). An empty T640 FPC can weigh up to 25 lb (11.3 kg), and a fully configured T640 FPC can weigh up to 31.7 lb (14.4 kg). An empty T1600 FPC can weigh up to 25 lb (11.3 kg), and a fully configured T1600 FPC can weigh up to 37 lb (14.5 kg).

9. Place one hand around the front of the FPC (the PIC housing) and the other hand under it to support it. Slide the FPC completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.

   Caution: Do not stack FPCs on one another after removal. Place each one individually into an electrostatic bag or on its own antistatic mat on a flat, stable surface.

10. If necessary, remove each additional installed PIC from the FPC.
11. After you remove each PIC, immediately place it on an antistatic mat or in an electrostatic bag.
12. If you are not replacing the FPC now, install a blank panel over the slot to maintain proper airflow in the FPC card cage.

    Caution: Do not operate the routing platform with any of the FPC slots empty. When you remove an FPC, immediately install a replacement FPC or FPC blank panel to prevent overheating of routing platform components and to ensure compliance with electromagnetic radiation requirements (prevent radio interferrence).

    Caution: After removing an FPC from the chassis, wait at least 30 seconds before reinserting it, removing an FPC from a different slot, or inserting an FPC into a different slot.