Installing a T640 PIC

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. If the PIC uses fiber-optic cable, verify that there is a rubber safety cap over each transceiver on the faceplate. Install a cap if necessary.
3. Align the notches in the connector at the rear of the PIC with the notches in the PIC slot in the FPC and then slide the PIC in until it lodges firmly in the FPC.

   Caution: Slide the PIC straight into the slot to avoid damaging the components on the bottom of the PIC.

4. Secure the PIC to the FPC faceplate:
   • Type 1 or Type 2 PICs—Tighten the captive screws at the top and bottom of the faceplate.
   • Type 3 PICs—Turn the ejector handle at the top of the PIC faceplate clockwise, then tighten the captive screw at the bottom of the faceplate.
   • Type 4 PIC—Twist the ejector handle at the bottom of the PIC faceplate, then twist the ejector handle at the top of the faceplate and counterclockwise to unseat the PIC.
5. If the PIC 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 cable 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 cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

6. Insert the appropriate cables into the cable connectors on the PIC.
7. Arrange each cable in the cable management system 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 in the cable management system. 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.

8. Use one of the following methods to bring the PIC online:
   • Press the PIC offline/online button until the PIC LED lights green. For a PIC installed in a Type 1 FPC, use a tool—such as a flat-blade screwdriver—to press the button slightly beneath the faceplate of the PIC. For a PIC installed in a Type 2 FPC or Type 3 FPC, use a narrow-ended tool that fits inside the opening that leads to the button.
   • Issue the following CLI command:
     user@host> request chassis pic fpc-slot fpc-slot pic-slot pic-slot online

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

   The normal functioning status LED confirms that the PIC is online. You can also verify correct PIC functioning by issuing the show chassis fpc pic-status command.

Figure 1: Installing a PIC