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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-17
Chapter 4 Installing and Removing Line Cards, PLIMs, and Associated Components
How to Install or Remove an Impedance Carrier
Required Tools and Equipment
You need the following tools and part to perform this task:
• ESD-preventive wrist strap
• Large Phillips screwdriver
• Impedance carrier (MSC impedance carrier Cisco Product number CRS-MSC-IMPEDANCE=;
PLIM impedance carrier Cisco Product number CRS-INT-IMPEDANCE=)
Steps
To install an impedance carrier, follow these steps:
Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to an ESD connection socket
on the rear (MSC) side or a bare metal surface on the chassis.
Step 2 Use both hands while inserting an impedance carrier. Use one hand on the faceplate and the other hand
along the base of the impedance carrier to guide it into a slot.
Step 3 Slide the impedance carrier into the chassis until the captive screw plates are flush with the chassis.
Step 4 Partially tighten the two captive screws on the front panel of the impedance carrier (either by hand or
with the screwdriver) to make sure that they are both engaged.
Step 5 To seat the impedance carrier firmly in the slot, fully tighten the captive screws.
What to Do Next
After performing this task, replace any cosmetic covers.
Removing an Impedance Carrier
This section describes how to remove an impedance carrier from the Cisco CRS 8-slot line card chassis.
Both impedance carrier types are removed in the same manner. (For reference, Figure 4-14 shows an
MSC impedance carrier.) For more detailed information on impedance carriers, see the “Information
About Impedance Carriers and Slot Covers” section on page 4-6.
Prerequisites
Before performing this task, remove any cosmetic covers.
Required Tools and Equipment
You need the following tools to perform this task:
• ESD-preventive wrist strap
• Large Phillips screwdriver