Replacing Hardware Components
Replace PIC Cables
Removing and installingPIC cables does not affect router function, except that a
PIC does not receive or transmitdata while its cable is disconnected. Toreplace a
PIC cable, perform the following procedures:
Removing a PIC Cable on page 185
Installing a PIC Cable on page 186
Removing a PIC Cable
To remove a PIC cable, follow this procedure:
1. If the PIC connects to fiber-optic cable,have ready a rubber safety cap for
each cable and transceiver.
2. If removing all cables connectedto the PIC, 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 M160 Internet Router PIC Guide.ForthePICs
that install on an FPC1, the offline button for each PIC is next to it on the
FPC card carrier.For the PICs that install on an FPC2, the offline button is
onthePICfaceplate. SeeFigure6.
Issue the following CLI command:
user@host>request chassis pic fpc-slot
fpc-slot
pic-slot
pic-slot
offline
For more informationabout the command, see the JUNOS Protocols, Class of
Service, and System Basics Command Reference.
3. Unplug the cable from the cable connector port. 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 the ends of fiber-optic cables or into the
transceiverson the interface faceplate. Single-mode fiber-optic cableand the
interfaces that use it (such as ATMand SONET/SDH interfaces) emit laser light
that can damage your eyes.
Replacing Packet ForwardingEngine Components 185