Juniper M10i Hardware Manual page 124

M10i Internet Router Hardware Guide
6.
WARNING: Do not look directly into the ends of fiber-optic cables or into the
transceivers on the interface faceplate. Single-mode fiber-optic cable and the interfaces
that use it (such as ATM and SONET/SDH interfaces) 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.
7.
8.
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.
CAUTION: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc
smaller than a few inches in diameter can damage the cable and cause problems
that are difficult to diagnose.
100
Replacing a PIC
If the PIC uses fiber-optic cable, remove the rubber safety cap from each
transceiver and the end of each cable.
Insert the appropriate cables into the cable connectors on the PIC.
Arrange each cable in the cable management system to prevent the cable 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 in the cable management system. Placing fasteners on the
loop helps to maintain its shape.