Removing an MX480 MIC
MICs are hot-insertable and hot-removable. When you remove a MIC, the router continues
to function, although the MIC interfaces being removed no longer function.
The MICs are located in the MPCs installed in the front of the router. A MIC weighs less
than 2 lb (0.9 kg).
To remove a MIC (see Figure 143 on page 339 and Figure 144 on page 339):
1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the
MIC. If the MIC 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 MIC offline:
•
Press its online/offline button. Use a narrow-ended tool that fits inside the opening
that leads to the button. Press and hold the button until the MIC OK/FAIL LED goes
off (about 5 seconds).
•
Issue the following CLI command:
user@host> request chassis mic fpc-slot mpc-slot mic-slot mic-slot offline
For more information about the command, see the CLI Explorer.
4. Label the cables connected to the MIC so that you can later reconnect each cable to
the correct MIC.
5. Disconnect the cables from the MIC. If the MIC 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 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.
Copyright © 2017, Juniper Networks, Inc.338
MX480 3D Universal Edge Router Hardware Guide
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