34
Installing and Upgrading Internal Modules in Cisco 2800 Series Routers
OL-5792-04
Replacing the Power Supply
Removing the Existing Power Supply
To remove a power supply from a Cisco 2811 router, perform the following steps.
Caution Do not disconnect the flat ribbon cable (shown in Figure 33). The cable is of adequate length to perform
the power supply replacement procedure. Removing the flat ribbon cable without the proper tools may
cause damage to components in the router.
Step 1 Disconnect the power output cable connector (or connectors—see note below) from the power supply.
Power supply connectors have a locking feature on the power supply end that you must release. Do not
disconnect any power cables from the system board.
Note The AC-input power supply in a Cisco 2811 router uses only one power output cable. The
DC-input power supply and the ILP supply each use two power output cables that must be
disconnected. On the ILP supply, the ILP cable is also hooked to cable guides on the power
supply and the chassis, so it must be both disconnected and unhooked from the power supply.
See Figure 40.
Step 2 Remove the air duct by squeezing it gently at the bottom and lifting it straight up. See Figure 33. Note
that there are four snaps on the air duct, two on each side. By squeezing the air duct, the snaps are
released from the sheet metal retainers in the chassis that capture them.
Figure 33 Flat Ribbon Cable and Air Duct
1 Ribbon Cable 2 Air Duct
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