Chapter 5 Maintaining the Router
Removing and Replacing a DC PEM
Step 14 Set the power switch on both power supplies to the on (1) position.
The AC Input Power and DC Output Power indicators on the power supplies should be on. If the indicators do are not on, see the “Troubleshooting the AC Power Entry Module Installation” section on page
Removing and Replacing a DC PEM
Although a DC PEM supports OIR, in order to maintain operational redundancy, proper cooling, and meet EMI compliance standards, you must have both working power supplies installed. When you remove a failed power supply with the router in operation, perform the replacement as quickly as possible. Make sure you have the tools and the replacement power supply ready before beginning the removal and installation procedure.
Use the following procedure to remove and replace a DC PEM.
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