Juniper M120 Hardware Manual page 191

Copyright © 2010, Juniper Networks, Inc.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
If the PIC uses fiber-optic cable, verify that there is a rubber safety cap over each
2.
transceiver on the faceplate. Install a cap if necessary.
Align the notches in the connector at the rear of the PIC with the notches in the PIC
3.
slot in the FPC and then slide the PIC in until it lodges firmly in the FPC.
CAUTION: Slide the PIC straight into the slot to avoid damaging the
components on the bottom of the PIC.
For an FPC3 PIC, turn the ejector handle at the top of the PIC faceplate clockwise,
4.
and then tighten the captive screw at the bottom of the faceplate to secure the PIC
in the FPC. For an FPC 1 or FPC2 PIC, tighten the captive screws at the top and bottom
of the faceplate.
If the PIC uses fiber-optic cable, remove the rubber safety cap from each transceiver
5.
and the end of each cable.
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
inserting or removing cable. The safety cap keeps the port clean and
prevents accidental exposure to laser light.
Insert the appropriate cables into the cable connectors on the PIC.
6.
Arrange each cable in the cable management system to prevent the cable from
7.
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 in the cable management system. Placing fasteners on the loop helps to maintain
its shape.
CAUTION: Do not let fiber-optic cable hang free from the connector. Do
not allow fastened loops of cable to dangle, which stresses the cable at
the fastening point.
Chapter 14: Replacing M120 Hardware Components
163