Installing A T640 Sfp - Juniper T640 Hardware Manual

Installing a T640 SFP

Copyright © 2017, Juniper Networks, Inc.
Arrange the cable in the cable management system to prevent it from dislodging or
5.
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: 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.
Pull the ejector handle away from the SFP faceplate to unseat the SFP from the PIC.
6.
Pull the SFP out of the PIC, and place it on the antistatic mat or in the electrostatic
bag.
CAUTION: After removing a transceiver from the chassis, wait at least 30
seconds before reinserting it or inserting a transceiver into a different slot.
To install a replacement SFP:
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Verify that a rubber safety cap covers the SFP transceiver, installing one if necessary.
2.
Orient the SFP over the port in the PIC so that the connector end will enter the slot
3.
first and the SFP connector faces the appropriate direction:
If the PIC has ten SFP ports, the ports are arranged in two columns. The SFP
connector faces to the right for ports in the left column, and to the left for ports in
the right column.
If the PIC has one or two SFP ports, the SFP connector faces to the left.
Slide the SFP into the slot. If there is resistance, remove the SFP and flip it so that the
4.
connector faces the other direction.
Remove the rubber safety cap from the transceiver and the end of the cable, and
5.
insert the cable into the transceiver.
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.
Chapter 30: Replacing Switch Fabric Components
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