Removing an MX480 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.
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 151 on page 352):
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 its online/offline button. For a PIC installed in 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 off (about 5 seconds).
•
Issue the following 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.
CAUTION: Do not leave a fiber-optic transceiver uncovered except when
you are inserting or removing cable. The safety cap keeps the port clean
and prevents accidental exposure to laser light.
6. Arrange the cable in the cable management brackets to prevent it from dislodging or
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.
Placing fasteners on the loop helps to maintain its shape.
351Copyright © 2017, Juniper Networks, Inc.
Chapter 25: Replacing Line Card Components
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