Juniper T640 Hardware Manual page 248

T640 Core Router Hardware Guide
218
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.
Place one hand under the bottom edge of the T640-SIB and one hand around the
2.
top of the T640-SIB faceplate.
If applicable, remove the protective tape covering each T640-SIB fiber-optic array
3.
adapter.
Remove the dust covers from the fiber-optic array cable connectors. To remove a
4.
dust cover, loosen the thumbscrew and captive screw on the connector. (Use the
supplied small slotted screwdriver to loosen the captive screw.) Store the dust covers
in a dust-free resealable plastic bag.
Install the cable connector to the fiber-optic array adapter. Align the connector with
5.
the fiber-optic array adapter, and carefully press it into the adapter until it stops. The
cable connector and adapter are keyed to ensure proper mating.
NOTE: The optics in a fiber-optic array adapter are spring loaded, so you
must continue to apply force to a fiber-optic array cable connector or
loopback connector while securing it to a TX-SIB or T640-SIB 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.
Partially tighten the thumbscrew and captive screw on the fiber-optic array cable
6.
connector. (Use the supplied small slotted screwdriver to tighten the captive screw.)
Alternate between the thumbscrew and captive screw until the cable connector is
secured to the adapter.
Use one of the following methods to bring the T640-SIB online:
7.
Press and hold the online/offline button on the faceplate until the green
next to the button blinks.
Issue the following CLI command:
user@host> request chassis sib lcc number slot slot-number online
Check the LEDs on the T640-SIB faceplate to verify that the SIB is functioning normally.
8.
The green LED should light steadily a few minutes after the T640-SIB is installed.
OK
If the FAIL LED is lit steadily, remove and install the T640-SIB again (see "Removing
a T640-SIB" on page 216 and this procedure). If the
T640-SIB is not functioning properly. Contact your customer support representative.
Check the status of the T640-SIBs. Issue the following CLI commands:
9.
user@host> show chassis environment sib lcc number
OK
LED still lights steadily, the
FAIL
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LED