CHAPTER 19
Maintaining the PHY Modules in the Cisco cBR
Chassis
• 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
Removing the Downstream PHY Module in the Interface Line
Card
The Downstream PHY module is removed for replacement or upgrade.
Do not touch the cLGA connector.
Caution
Before you begin
• Attach an ESD-preventive wrist strap to your wrist and connect the other end to the grounding lug
connected to the chassis.
• Be aware of the weight and size of the equipment. Handle it with care.
• Remove the interface line card.
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
or replaced by another interface line card or a line card blank, within three minutes of removal.
The line card slot must not remain empty for more than three minutes, to avoid
critical thermal alarms relating to overheating of individual components.
Caution
Cisco Converged Broadband Routers Hardware Installation Guide
229
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