Cisco Systems Cisco CRS-1 manual Installing a Plim, Troubleshooting the MSC

Chapter 4 Installing and Removing SFCs, RPs, MSCs, PLIMs, and Associated Components

How to Install or Remove a Physical Layer Interface Module

Troubleshooting the MSC

If the installed or replaced MSC fails to operate or to power up on installation:

•Make sure that the card is seated firmly in the Cisco CRS-1 4-slot line card chassis slot. One easy way to verify physical installation is to see whether the front faceplate of the MSC is even with the fronts of the other cards installed in the card cage.

•Check whether the ejector levers are latched and that the captive screws are fastened properly. If you are uncertain, unlatch the levers, loosen the screws, and attempt to reseat the MSC.

•Examine the Cisco CRS-1 4-slot line card chassis alarm LEDs on the RP to see if there are any active alarm conditions.

•Examine the Cisco CRS-1 4-slot line card chassis power shelves to see whether the chassis, as a whole, is receiving power.

How to Install or Remove a Physical Layer Interface Module

This section contains the following procedures:

•Installing a PLIM

•Removing a PLIM

•Verifying the Installation of a PLIM

Installing a PLIM

This section describes how to install a physical layer interface module (PLIM) in the Cisco CRS-1 4-slot line card chassis. For more detailed information on PLIMs, see the Cisco CRS-1 Series Carrier Routing System 4-Slot Line Card Chassis System Description.

A physical layer interface module (PLIM) is paired with an MSC through the midplane of the chassis.

APLIM provides the ability to choose several interfaces (for example, Packet-over-SONET/SDH [POS]). Figure 4-26shows a typical PLIM (in this case, a 16 x OC-48c/STM-16c Packet-over-SONET/ SDH [POS]).

For information about installing or removing SIPs and SPAs, refer to the Cisco CRS-1 SIP and SPA Hardware Installation Guide on www.cisco.com.

	Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis Installation Guide
OL-10971-07		4-41