Juniper TX MATRIX Hardware Manual page 289

Copyright © 2010, Juniper Networks, Inc.
To remove a TX-SIB (see Figure 115 on page 258):
Have ready a replacement TX-SIB or TX-SIB blank panel, an antistatic mat for the
1.
TX-SIB, and one dust cover for each fiber-optic array cable connector you remove
from the TX-SIB.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Ensure that the fiber-optic array cable connectors plugged into the TX-SIB are labeled
3.
so you can reconnect them correctly.
Use one of the following methods to take the TX-SIB offline:
4.
Issue the following CLI command:
user@host> request chassis sib slot slot-number offline scc
For more information about the command, see the Junos OS System Basics and
Services Command Reference.
Press and hold the online/offline button on the craft interface that corresponds to
the TX-SIB. Hold the button down until all of the LEDs surrounding the button are
not lit.
Remove each fiber-optic array cable connector (up to four) from the TX-SIB. Partially
5.
loosen the thumbscrew and captive screw on the fiber-optic array cable connector.
(Use the supplied small slotted screwdriver to loosen the captive screw.) Alternate
between the thumbscrew and captive screw until the cable connector is removed
from the adapter.
WARNING: Do not look directly into a fiber-optic array adapter or a
connector at the end of a fiber-optic array cable attached to an adapter.
The fiber optics emit laser light that can damage your eyes.
Install a dust cover on each cable connector you removed from the TX-SIB. Align the
6.
dust cover with the cable connector and carefully press them together until they stop.
The cover and the cable connector are keyed to ensure proper mating. Secure the
dust cover by tightening the thumbscrew and captive screw on the connector. (Use
the supplied small slotted screwdriver to tighten the captive screw.)
Move the fiber-optic array cables to the side of the TX-SIB so they do not interfere
7.
with the removal of the TX-SIB. You might need to remove the cables from the comb
panel assembly.
Simultaneously turn both ejector handles on the top and bottom of the faceplate
8.
counterclockwise to unseat the TX-SIB.
Grasp both ejector handles, pull firmly, and slide the TX-SIB about three-quarters of
9.
the way out of the chassis.
CAUTION: Be prepared to support the weight of the TX-SIB (approximately
35 lb [15.9 kg]) before you slide it completely out of the chassis.
Chapter 24: Replacing TX Matrix Hardware Components
257