Juniper Networks M160 manual 173

Replacing Hardware Components

is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 226.

2.Verify that the ends of the ejector levers, which are located at each end of the FPC, are pushed outward, nearly perpendicular to the face of the FPC.

3.Grasp the front of the FPC with one hand and place the other hand under the FPC to support it.

CAUTION: When the FPC is out of the chassis, do not hold it by the ejector levers, bus bars, or edge connectors. They cannot support its weight.

4.Align the rear bottom corners of the FPC with the guides at the bottom of the FPC slot. Slide the FPC into the card cage until it contacts the midplane.

5.Push the ends of the ejector levers inward until they are nearly flush with the face of the FPC.

6.Tighten the thumbscrew at each end of the FPC to seat the FPC securely in the chassis.

7.If you are installing different PICs in the FPC, follow this procedure for each one:

a.If the PIC uses fiber-optic cable, verify that there is a rubber safety cap over each transceiver on the faceplate. Install a cap if necessary.

b.Slide the PIC into a slot in the FPC, aligning the notches in the connector at the rear of the PIC with the notches in the FPC slot and then firmly pushing the PIC into place.

CAUTION: Insert the PIC straight into the FPC slot to avoid damaging the components on the bottom of the PIC.

c.Tighten the thumbscrews at the ends of the PIC faceplate simultaneously and at about the same rate (tightening the two screws alternately or at very different rates can cause the PIC to become lodged in the FPC slot, making it difficult to turn the screws). Verify that the PIC is seated properly.

8.If any of the PICs on the FPC connect to fiber-optic cable, remove the rubber safety cap from each transceiver and cable.

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

Replacing Packet Forwarding Engine Components 173