Cisco CRS-1 - Carrier Routing System Router Migration Manual page 146

Downgrading your Cisco CRS-3 Carrier Routing System 4-Slot Line Card Chassis Back to a Cisco CRS-1 Carrier Routing
System 4-Slot Line Card Chassis
Attach the ESD-preventive wrist strap to your wrist and connect its leash to an ESD connection socket
Step 1
on the front of the chassis or to a bare metal surface on the chassis.
Identify the card to be removed in the card cage. Use the screwdriver to turn the two captive screws on
Step 2
the front panel of the card counterclockwise to loosen the card from the slot.
Grasp the two card ejector levers and simultaneously pivot both ejector levers about 90 degrees away
Step 3
from the front edge of the card carrier to unseat the card from the backplane connector.
Caution
Grasp the slide-assistance arm and gently pull the CRS-3 fabric card halfway from the slot.
Step 4
Move one hand under the CRS-3 fabric card to guide it. Avoid touching the CRS-3 fabric card printed
Step 5
circuit board, components, and any connector pins. DO NOT LIFT CARDS BY THE
SLIDE-ASSISTANCE ARM; lift them from the bottom, using the slide-assistance arm only as an aid for
balance.
Step 6 Slide the card completely from the slot.
Caution
Replace the caps on the HBMT connectors on the back of the card.
Step 7
Place the card directly into an antistatic sack or other ESD-preventive container. If you plan to return a
Step 8
defective CRS-3 fabric card to the factory, repackage it in a Cisco CRS-3 fabric card shipping container.
What to Do Next
After performing this task, you may replace any front cosmetic cover plates (see the "Installing the Front
and Rear (SFC) Side Cosmetic Components" section in the Cisco CRS Carrier Routing System 4-Slot
Line Card Chassis Installation Guide).
For information on removing the front cosmetic cover plates, see the "Removing the Rear (OIM) Side
Cosmetic Components" section in the Cisco CRS Carrier Routing System 4-Slot Line Card Chassis
Installation Guide. For information on how to power down your chassis, see the "Powering an AC Power
Shelf Energized Chassis Up and Down" section in the Cisco CRS Carrier Routing System 4-Slot Line
Card Chassis Installation Guide or the "Powering a DC Power Shelf Energized Chassis Up and Down"
section in the Cisco CRS Carrier Routing System 4-Slot Line Card Chassis Installation Guide. For
information on installing an OIM, see the "Installing an OIM" section in the Cisco CRS Carrier Routing
System 4-Slot Line Card Chassis Installation Guide.
For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety
Information for the Cisco CRS Carrier Routing System. For information on installing a CRS-1 fabric
card, see the
Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide
2-48
Chapter 2 Downgrading Your Cisco CRS-3 Carrier Routing System Router Back to a Cisco CRS-1 Carrier Routing
To prevent ESD damage, handle a CRS-3 fabric card by its ejector levers, the CRS-3 fabric
card carrier edges, or the slide-assistance arm only. Do not touch any of the electrical
components, pins, and circuitry.
A CRS-3 fabric card weighs about 30 lb (14 kg). You should use two hands when handling the
CRS-3 fabric card.
"Installing a CRS-1 Fabric Card" section on page 2-49.
System Router
OL-13669-03