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Cisco ASR 14000 Series Router 8-Slot Line Card Chassis Installation Guide
OL-16973-01
Chapter 4 Installing and Removing MSCs, PLIMs, and Associated Components
How to Install or Remove an MSC
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 a screwdriver to loosen the captive screw next to each MSC ejector lever.
Caution
To prevent ESD damage, handle an MSC by its ejector levers or the MSC carrier edges only.
Do not touch any of the electrical components, pins, or circuitry.
Step 3
Simultaneously pivot the ejector levers away from the faceplate to release the MSC from the midplane
connectors.
Step 4
Grasp the cable management bracket and gently pull the MSC halfway from the slot.
Step 5
Move one hand under the MSC to guide it.
Avoid touching the MSC printed circuit board, components, or any connector pins.
Do not lift cards by
the cable management bracket
—lift the cards from the bottom, using the cable management bracket only
as an aid for balance.
Step 6
Place the removed MSC on an antistatic mat, or immediately place it in an antistatic bag if you plan to
return it to the factory.
Step 7
If the MSC slot is to remain empty, install an MSC impedance carrier to keep dust from the chassis and
maintain proper airflow through the MSC compartment.
Step 8
Use a screwdriver to tighten the captive screws next to each impedance carrier ejector lever to ensure
proper EMI shielding and to maintain proper airflow throughout the chassis.
What to Do Next
If you did not place the MSC in an antistatic bag, do so now for storage and future use.
Verifying the Installation of an MSC
This section describes how to verify that an MSC has been properly installed.
shows the
ASR-MSC front panel.
Figure 4-27
ASR-MSC Front Panel
Note
The other version of the MSC, the ASR-MSC-B, is similar in appearance. The primary difference is the
ASR-MSC-B is a flat design, instead of modular.
Understanding the Alphanumeric LEDs
At one end of the faceplate, near an ejector lever, an MSC has two four-digit alphanumeric LED displays
that show a sequence of messages indicating the state of the card.
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