Juniper M120 - Replacing an M120 PIC; Removing an M120 PIC

Replacing an M120 PIC
PICs are hot-insertable and hot-removable. When you remove a PIC, the router continues
to function, although the PIC interfaces being removed no longer function. To replace a
PIC, perform the following procedures:
•
Removing an M120 PIC on page 223
•
Installing an M120 PIC on page 225
Removing an M120 PIC
The PICs are located in the FPCs installed in the front of the router. A PIC weighs less
than 2 lb (0.9 kg).
To remove a PIC (see Figure 89 on page 225):
1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the
PIC. If the PIC connects to fiber-optic cable, have ready a rubber safety cap for each
transceiver and cable.
2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
ESD points on the chassis.
3. Use one of the following methods to take the PIC offline:
•
Press and hold the PIC offline button until its failure indicator LED lights, which
usually takes about 5 seconds. The failure LED is usually red; for more information,
see the M120 Multiservice Edge Router Interface Module Reference. For the PICs that
install on an Type 1 FPCs, the offline button for each PIC is next to it on the FPC card
carrier. For the PICs that install on an Type 2 FPCs, the offline button is on the PIC
faceplate.
•
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 CLI Explorer.
4. Label the cables connected to the PIC so that you can later reconnect each cable to
the correct PIC.
5. Disconnect the cables from the PIC. If the PIC uses fiber-optic cable, 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.
223Copyright © 2018, Juniper Networks, Inc.
Chapter 27: Replacing Line Card Components