Installing an MCS

To install an MCS, follow this procedure (see Figure 82):

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.
2. Place one hand under the MCS to support it and grasp one of the extractor clips on the faceplate with the other hand.
3. Align the rear of the MCS with the guides inside the chassis and slide it in completely.
4. Press the extractor clip at each end of the MCS inward.
5. Verify that the green LED labeled OK on the MCS faceplate is lit. Also check the host module LEDs on the craft interface to verify that the green LED labeled ONLINE is lit for the host module to which the MCS belongs (Figure 11 shows the LEDs).

   You can also verify correct MCS functioning by issuing the show chassis environment mcs command described in Maintaining Host Module Components.

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.

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