Juniper T640 Hardware Manual page 327

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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.

Unseat the PIC:

Type 1 or Type 2 PIC—Loosen the captive screws at the top and bottom of the PIC

Type 3 PIC—Loosen the captive screw at the bottom of the PIC faceplate, then twist

the ejector handle at the top of the faceplate and counterclockwise to unseat the

Type 4 PIC—Twist the ejector handle at the bottom of the PIC faceplate, then twist

the ejector handle at the top of the faceplate and counterclockwise to unseat the

Slide the PIC out of the FPC card carrier, and place it in the electrostatic bag or on the

antistatic mat.

If you are not reinstalling a PIC into the emptied PIC slot within a short time, install a

blank PIC panel over the slot to maintain proper airflow in the FPC card cage.

Chapter 17: Replacing T640 Router Hardware Components

Troubleshooting