Juniper Networks M160 manual Installing a PCG

M160 Internet Router Hardware Guide

Installing a PCG

To install a PCG, follow this procedure (see Figure 91):

1.Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 226.

2.Place one hand under the PCG to support it and grasp the thumbscrew on the faceplate with the other hand.

3.Align the rear of the PCG with the guides inside the chassis and slide it in completely.

4.Tighten the thumbscrew on the faceplate to seat the PCG firmly in the chassis.

5.Verify that the green LED labeled OK lights steadily, which takes about 3 seconds.

You can also verify correct PCG functioning by issuing the

show chassis environment pcg command, as described in “Maintaining the PCGs” on page 135.

6.Reinstall the rear component cover and tighten the thumbscrew at each corner to secure it to the chassis. For complete instructions, see “Reinstalling the Rear Component Cover” on page 109.

CAUTION: To maintain proper airflow and provide electromagnetic shielding, do not operate the router without the rear component cover in place.

178 Replacing Packet Forwarding Engine Components