8 1200-Watt DC-Input Power Supply Replacement Instructions
Removing and Replacing a Power Supply
Removing and Replacing a Power Supply
The power supplies rest on the floor of the chassis under the card cage.
The following sections describe the procedures for removing an existing power supply and installing
a new one. The power supplies rest on the floor of the chassis under the card cage. The DC-input
cable must be routed through conduit from your power source to the power supply.
Note
You provide conduit through which you must route the DC-input power cable. If cables from
other equipment are in front of the bay, move them aside and temporarily secure them with cable
ties. You must disconnect the conduit from the conduit bracket before you can remove a power
supply from the chassis. Router and attach the conduit to make each power supply accessible for
replacement and maintenance.
In systems with redundant power, you can install, remove, or replace one of the power supplies
without affecting system operation. When power is removed from one supply, the redundant power
feature causes the second supply to ramp up to full power and maintain uninterrupted system
operation.
Note
This procedure is not for new system installation; perform this procedure only if you have
already connected the system to network interfaces and performed the first-time startup procedures
described in the Cisco 7513 Hardware Installation and Maintenance publication.
Warning
Although it is not necessary to turn OFF both power supplies to remove one of two power
supplies, you must turn OFF the power to the power supply you plan to remove. When the power is
on with one of two power supplies removed, high current is exposed on the power connector inside
the chassis. If you have only one power supply, you must turn OFF the power to this power supply.
