Juniper MX480 Hardware Manual page 346

CAUTION:
allow the fastened loops of a cable to dangle, which stresses the cable at the
fastening point.
CAUTION:
An arc smaller than a few inches in diameter can damage the cable and cause
problems that are difficult to diagnose.
14. 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 following CLI command:
user@host>request chassis fpc slot slot-number online
For more information about the command, see the
CAUTION:
removing the FPC again, removing an FPC from a different slot, or inserting an
FPC in a different slot.
You can also verify correct FPC and PIC functioning by issuing the show chassis fpc and show chassis fpc
pic-status commands described in
on page 368.
Do not let fiber-optic cables hang free from the connector. Do not
Avoid bending a fiber-optic cable beyond its minimum bend radius.
CLI
After the OK LED lights steadily, wait at least 30 seconds before
"Maintaining MX480 FPCs" on page 338
Explorer.
and "Maintaining MX480 PICs"
350