Juniper T640 Hardware Manual page 373

Copyright © 2017, Juniper Networks, Inc.
If you are installing a Type 2 FPC or Type 3 FPC, tighten the screws inside the ejector
14.
handles to secure the FPC. Do not overtighten them.
Remove the rubber safety cap from each fiber-optic transceiver and cable.
15.
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.
Insert the appropriate cable into the cable connector ports on each PIC on the FPC.
16.
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.
Use one of the following methods to bring the FPC online:
17.
Press and hold the FPC online/offline button until the green
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
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 pic-status
page 450 and "Maintaining T640 PICs and PIC Cables" on page
Chapter 28: Replacing Line Card Components
LED lights steadily, wait at least 30 seconds before
OK
commands, as described in
LED next to the
OK
show chassis fpc and
"Maintaining T640 FPCs" on
454.
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