Chapter 3 Installing the Cisco ASR 903 Router
Installing the Power Supply
Caution To avoid erroneous failure messages, note the current configuration of all interfaces before you remove or replace an interface module, and allow at least 2 minutes for the system to reinitialize after a module has been removed or replaced. This time is recommended in order to allow for synchronization between components within the interface module and for synchronization with the standby RSP.
Installing the Power Supply
The Cisco ASR 903 Router router provides the choice of two different power supplies:
•DC
The DC power supply uses 3 position terminal
•AC
The AC power supply has an IEC
Each power supply provides a single primary input power connection. You can install dual power supplies for redundancy.
Warning Read the installation instructions before connecting the system to the power source. Statement 10
Note Products that have an AC power connection are required to have an external surge protective device (SPD) provided as part of the building installation to comply with the Telcordia
Caution Do not use interface module and power supply ejector handles to lift the chassis; using the handles to lift the chassis can deform or damage the handles.
The following sections describe the Cisco ASR 903 Router power supplies:
•Preventing Power Loss, page
•Power Connection Guidelines, page
•Installing the DC Power Supply, page
•Removing and Replacing the DC Power Supply, page
•Installing the AC power Supply, page
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