Reinstalling the MCSs

The router can have an MCS in each of the slots labeled MCS 0 and MCS 1 at the rear of the chassis, as shown in Figure 3. To reinstall an MCS, follow this procedure (see Figure 53):

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.

If there is a second MCS, repeat the procedure to reinstall it.