Juniper Networks manual M160 Internet Router Hardware Guide

M160 Internet Router Hardware Guide

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.Tighten the thumbscrews at the top and bottom of the PIC faceplate simultaneously and at about the same rate (tightening the two screws alternately or at very different rates can cause the PIC to become lodged in the FPC slot, making it difficult to turn the screws). Verify that the PIC is seated properly.

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 the ends of fiber-optic cables or into the transceivers on the interface faceplate. Single-mode fiber-optic cable and the interfaces that use it (such as ATM and SONET/SDH interfaces) 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.

182 Replacing Packet Forwarding Engine Components