Cisco CRS-1 - Carrier Routing System Router Migration Manual page 144

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
Figure 2-11
Prerequisites
Before performing this task, you must first open the front cosmetic doors (if installed).
Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide
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Chapter 2 Downgrading Your Cisco CRS-3 Carrier Routing System Router Back to a Cisco CRS-1 Carrier Routing
CRS-3 Fabric Card
System Router
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