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Maintaining the PHY Modules in the Cisco cBR
Chassis
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•
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Removing the Downstream PHY Module in the Interface Line
Card
The Downstream PHY module is removed for replacement or upgrade.
Caution
Do not touch the cLGA connector.
Before you begin
• Attach an ESD-preventive wrist strap to your wrist and connect the other end to the grounding lug
• Be aware of the weight and size of the equipment. Handle it with care.
•
Restrictions
• Ensure that a working Downstream PHY module is available for replacement.
• Ensure that the interface line card removed for the Downstream PHY module replacement, is re-installed
Removing the Downstream PHY Module in the Interface Line Card, on page 229
Installing the Downstream PHY Module in the Interface Line Card, on page 231
Removing the Upstream PHY Module in the Interface Line Card , on page 232
Installing the Upstream PHY Module in the Interface Line Card , on page 234
connected to the chassis.
Remove the interface line
card.
or replaced by another interface line card or a line card blank, within three minutes of removal.
Caution
The line card slot must not remain empty for more than three minutes, to avoid
critical thermal alarms relating to overheating of individual components.
C H A P T E R
Cisco Converged Broadband Routers Hardware Installation Guide
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Troubleshooting
