Replacing An M120 Pic Cable; Removing An M120 Pic Cable - Juniper M120 Hardware Manual

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Replacing an M120 PIC Cable

Copyright © 2010, Juniper Networks, Inc.
M120 PICs Description on page 15
Maintaining M120 PICs and PIC Cables on page 112
Troubleshooting M120 PICs on page 122
Removing and installing PIC cables does not affect router function, except that a PIC
does not receive or transmit data while its cable is disconnected. To replace a PIC cable,
perform the following procedures:
Removing an M120 PIC Cable on page 165
Installing an M120 PIC Cable on page 166

Removing an M120 PIC Cable

To remove a PIC cable:
If the PIC connects to fiber-optic cable, have ready a rubber safety cap for each cable
1.
and transceiver.
If removing all cables connected to the PIC, use one of the following methods to take
2.
the PIC offline:
Press its online/offline button. For a PIC installed in an FPC1, use a tool—such as a
flat-blade screwdriver—to press the button slightly beneath the faceplate of the
PIC. For a PIC installed in an FPC2 or FPC3, use a narrow-ended tool that fits inside
the opening that leads to the button. Press and hold the button until the PIC LED
goes out (about 5 seconds).
Issue the CLI command:
user@host> request chassis pic fpc-slot fpc-slot pic-slot pic-slot offline
For more information about the command, see the Junos OS System Basics and
Services Command Reference.
Unplug the cable from the cable connector port. If the PIC uses fiber-optic cable,
3.
immediately cover each transceiver and the end of each 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.
Chapter 14: Replacing M120 Hardware Components
165