NOTE: The slot number corresponds to the lowest numbered slot for
which the FPC is installed.
5. Disconnect the cables from the PICs installed in the FPC.
6. Immediately cover each fiber-optic transceiver and the end of each fiber-optic cable
with a rubber safety cap.
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.
7. Arrange the cable in the cable management brackets to prevent it 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.
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 smallerthan a few inches in diameter can damage the cable
and cause problems that are difficult to diagnose.
8. Simultaneously turn both the ejector handles counterclockwise to unseat the FPC.
9. Grasp the handles, and slide the FPC straight out of the card cage halfway.
10. Place one hand around the front of the FPC (the PIC housing) and the other hand
under it to support it. Slide the FPC completely out of the chassis, and place it on the
antistatic mat or in the electrostatic bag.
CAUTION: The weight of the FPC is concentrated in the back end. Be
prepared to accept the full weight—up to 18 lb (8.2 kg)—as you slide the
FPC out of the chassis.
When the FPC is out of the chassis, do not hold it by the ejector handles,
bus bars, or edge connectors. They cannot support its weight.
333Copyright © 2017, Juniper Networks, Inc.
Chapter 25: Replacing Line Card Components
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