14. If you are installing a Type 2 FPC or Type 3 FPC, tighten the screws inside the ejector
handles to secure the FPC. Do not overtighten them.
15. Remove the rubber safety cap from each fiber-optic transceiver and cable.
WARNING: Do not look directly into the ends of fiber-optic cables or into
the transceivers on the PIC faceplate. Fiber-optic transceivers and cable
connected to transceivers emit laser light that can damage your eyes.
16. 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 damagethe cable
and cause problems that are difficult to diagnose.
17. Use one of the following methods to bring the FPC online:
•
Press and hold the FPC online/offline button until the green OK 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 request chassis fpc.
CAUTION: After the OK LED lights steadily, wait atleast 30 seconds before
removing the FPC again, removing an FPC from a different slot, or inserting
an FPC in a different slot.
You can verify correct FPC and PIC functioning by issuing the show chassis fpc and
show chassis fpc pic-status commands, as described in “Maintaining T640 FPCs” on
page 450 and “Maintaining T640 PICs and PIC Cables” on page 454.
339Copyright © 2017, Juniper Networks, Inc.
Chapter 28: Replacing Line Card Components
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